POP Class

Properties   Methods   Events   Config Settings   Errors  

The POP Class is used to easily retrieve electronic mail from internet post office servers (POP).

Syntax

POP

Remarks

The POP Class supports both plaintext and Secure Sockets Layer/Transport Layer Security (SSL/TLS) connections (RFC 2595). When connecting over SSL/TLS the SSLServerAuthentication event allows you to check the server identity and other security attributes. The SSLStatus event provides information about the SSL handshake. Additional SSL related settings are also supported via the Config method.

The POP Class implements a standard internet post office (POP3) client as specified in RFC 1725.

To connect to a MailServer, first set the appropriate User and Password and then connect by calling the Connect method. Upon successful connection to the MailServer, the number of waiting messages is shown by the MessageCount property. A message is selected by setting the MessageNumber property to a number between 1 and MessageCount (inclusive). Then, the message text and headers are received by calling the Retrieve method.

The message text is received through the Transfer event, whereas the message headers are received through the Header event. Additionally, up to MaxLines from the message body are provided in the MessageText property. The body of the message is also saved in the file specified by the LocalFile property. StartTransfer and EndTransfer events are fired at the beginning and end of message transmission. The PITrail event provides a trace of the interaction between the client and server (excluding message transfers).

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

Config Settings

The following is a list of config settings for the class with short descriptions. Click on the links for further details.

AuthMechanism Property (POP Class)

This property includes the authentication mechanism to be used when connecting to the mail server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetAuthMechanism();
int SetAuthMechanism(int iAuthMechanism);

Unicode (Windows)
INT GetAuthMechanism();
INT SetAuthMechanism(INT iAuthMechanism);

AM_USER_PASSWORD(0), 
AM_CRAMMD5(1), 
AM_NTLM(2), 
AM_APOP(3), 
AM_SASLPLAIN(4), 
AM_SASLDIGEST_MD5(5), 
AM_KERBEROS(6), 
AM_XOAUTH2(7)

int ipworks_pop_getauthmechanism(void* lpObj);
int ipworks_pop_setauthmechanism(void* lpObj, int iAuthMechanism);

int GetAuthMechanism();
int SetAuthMechanism(int iAuthMechanism);

Default Value

0

Remarks

This property is used as the authentication mechanism when connecting to the mail server. By default, this property is amUserPassword (0), and default plaintext authentication is used to log in to the server. Other, more secure, options include amCRAMMD5 (1) for CRAM-MD5, amNTLM (2) for NTLM authentication, amAPOP (3) for APOP authentication, and amSASLDigestMD5 (5) for SASL DIGEST-MD5 authentication.

amSASLPlain (4) is also available, but most servers require a Secure Sockets Layer (SSL) connection when utilizing this authentication mechanism.

amKerberos (6) is for Kerberos authentication. Note: This functionality is available only in Windows.

Data Type

Integer

Command Property (POP Class)

This property is used to send additional commands directly to the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int SetCommand(const char* lpszCommand);

Unicode (Windows)
INT SetCommand(LPCWSTR lpszCommand);

int ipworks_pop_setcommand(void* lpObj, const char* lpszCommand);

int SetCommand(QString qsCommand);

Default Value

""

Remarks

This property can be used to send additional commands directly to the server. Check the LastReply property or trap the PITrail events coming from the server to get the response.

This property is write-only and not available at design time.

Data Type

String

Connected Property (POP Class)

This shows whether the class is connected.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetConnected();
int SetConnected(int bConnected);

Unicode (Windows)
BOOL GetConnected();
INT SetConnected(BOOL bConnected);

int ipworks_pop_getconnected(void* lpObj);
int ipworks_pop_setconnected(void* lpObj, int bConnected);

bool GetConnected();
int SetConnected(bool bConnected);

Default Value

FALSE

Remarks

This property is used to determine whether or not the class is connected to the remote host.

Note: It is recommended to use the Connect or Disconnect method instead of setting this property.

This property is not available at design time.

Data Type

Boolean

FirewallAutoDetect Property (POP Class)

This property tells the class whether or not to automatically detect and use firewall system settings, if available.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetFirewallAutoDetect();
int SetFirewallAutoDetect(int bFirewallAutoDetect);

Unicode (Windows)
BOOL GetFirewallAutoDetect();
INT SetFirewallAutoDetect(BOOL bFirewallAutoDetect);

int ipworks_pop_getfirewallautodetect(void* lpObj);
int ipworks_pop_setfirewallautodetect(void* lpObj, int bFirewallAutoDetect);

bool GetFirewallAutoDetect();
int SetFirewallAutoDetect(bool bFirewallAutoDetect);

Default Value

FALSE

Remarks

This property tells the class whether or not to automatically detect and use firewall system settings, if available.

Data Type

Boolean

FirewallType Property (POP Class)

This property determines the type of firewall to connect through.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetFirewallType();
int SetFirewallType(int iFirewallType);

Unicode (Windows)
INT GetFirewallType();
INT SetFirewallType(INT iFirewallType);

FW_NONE(0), 
FW_TUNNEL(1), 
FW_SOCKS4(2), 
FW_SOCKS5(3), 
FW_SOCKS4A(10)

int ipworks_pop_getfirewalltype(void* lpObj);
int ipworks_pop_setfirewalltype(void* lpObj, int iFirewallType);

int GetFirewallType();
int SetFirewallType(int iFirewallType);

Default Value

0

Remarks

This property determines the type of firewall to connect through. The applicable values are as follows:

Data Type

Integer

FirewallHost Property (POP Class)

This property contains the name or IP address of firewall (optional).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetFirewallHost();
int SetFirewallHost(const char* lpszFirewallHost);

Unicode (Windows)
LPWSTR GetFirewallHost();
INT SetFirewallHost(LPCWSTR lpszFirewallHost);

char* ipworks_pop_getfirewallhost(void* lpObj);
int ipworks_pop_setfirewallhost(void* lpObj, const char* lpszFirewallHost);

QString GetFirewallHost();
int SetFirewallHost(QString qsFirewallHost);

Default Value

""

Remarks

This property contains the name or IP address of firewall (optional). If a FirewallHost is given, the requested connections will be authenticated through the specified firewall when connecting.

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the class fails with an error.

Data Type

String

FirewallPassword Property (POP Class)

This property contains a password if authentication is to be used when connecting through the firewall.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetFirewallPassword();
int SetFirewallPassword(const char* lpszFirewallPassword);

Unicode (Windows)
LPWSTR GetFirewallPassword();
INT SetFirewallPassword(LPCWSTR lpszFirewallPassword);

char* ipworks_pop_getfirewallpassword(void* lpObj);
int ipworks_pop_setfirewallpassword(void* lpObj, const char* lpszFirewallPassword);

QString GetFirewallPassword();
int SetFirewallPassword(QString qsFirewallPassword);

Default Value

""

Remarks

This property contains a password if authentication is to be used when connecting through the firewall. If FirewallHost is specified, the FirewallUser and FirewallPassword properties are used to connect and authenticate to the given firewall. If the authentication fails, the class fails with an error.

Data Type

String

FirewallPort Property (POP Class)

This property contains the transmission control protocol (TCP) port for the firewall Host .

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetFirewallPort();
int SetFirewallPort(int iFirewallPort);

Unicode (Windows)
INT GetFirewallPort();
INT SetFirewallPort(INT iFirewallPort);

int ipworks_pop_getfirewallport(void* lpObj);
int ipworks_pop_setfirewallport(void* lpObj, int iFirewallPort);

int GetFirewallPort();
int SetFirewallPort(int iFirewallPort);

Default Value

0

Remarks

This property contains the transmission control protocol (TCP) port for the firewall FirewallHost. See the description of the FirewallHost property for details.

Note: This property is set automatically when FirewallType is set to a valid value. See the description of the FirewallType property for details.

Data Type

Integer

FirewallUser Property (POP Class)

This property contains a user name if authentication is to be used connecting through a firewall.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetFirewallUser();
int SetFirewallUser(const char* lpszFirewallUser);

Unicode (Windows)
LPWSTR GetFirewallUser();
INT SetFirewallUser(LPCWSTR lpszFirewallUser);

char* ipworks_pop_getfirewalluser(void* lpObj);
int ipworks_pop_setfirewalluser(void* lpObj, const char* lpszFirewallUser);

QString GetFirewallUser();
int SetFirewallUser(QString qsFirewallUser);

Default Value

""

Remarks

This property contains a user name if authentication is to be used connecting through a firewall. If the FirewallHost is specified, this property and FirewallPassword properties are used to connect and authenticate to the given Firewall. If the authentication fails, the class fails with an error.

Data Type

String

Idle Property (POP Class)

The current status of the class.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetIdle();

Unicode (Windows)
BOOL GetIdle();

int ipworks_pop_getidle(void* lpObj);

bool GetIdle();

Default Value

TRUE

Remarks

Idle will be False if the component is currently busy (communicating and/or waiting for an answer), and True at all other times.

This property is read-only.

Data Type

Boolean

IncludeHeaders Property (POP Class)

This property instructs the class to include the headers in the MessageText and LocalFile.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetIncludeHeaders();
int SetIncludeHeaders(int bIncludeHeaders);

Unicode (Windows)
BOOL GetIncludeHeaders();
INT SetIncludeHeaders(BOOL bIncludeHeaders);

int ipworks_pop_getincludeheaders(void* lpObj);
int ipworks_pop_setincludeheaders(void* lpObj, int bIncludeHeaders);

bool GetIncludeHeaders();
int SetIncludeHeaders(bool bIncludeHeaders);

Default Value

FALSE

Remarks

This property instructs the component to include the headers in the MessageText and LocalFile. If set to True, the headers for the message being retrieved will be placed before the message body in the MessageText property;. If LocalFile is set, then the headers will be written to that file before the message body. In this manner, the whole content of a MIME-encoded message can be passed to the MIME class for further message processing.

Data Type

Boolean

LastReply Property (POP Class)

The last reply from the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetLastReply();

Unicode (Windows)
LPWSTR GetLastReply();

char* ipworks_pop_getlastreply(void* lpObj);

QString GetLastReply();

Default Value

""

Remarks

This property indicates the last reply received from the server. It can be used for informational purposes. The same information and more can also be retrieved through the PITrail event.

This property is read-only.

Data Type

String

LocalFile Property (POP Class)

This property includes the path to a local file to download the message body. If the file exists, it is overwritten (optional).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetLocalFile();
wchar_t* GetLocalFile_W(); // Windows only
int SetLocalFile(const char* lpszLocalFile);
int SetLocalFile(const wchar_t* lpszLocalFile); // Windows only

Unicode (Windows)
LPWSTR GetLocalFile();
INT SetLocalFile(LPCWSTR lpszLocalFile);

char* ipworks_pop_getlocalfile(void* lpObj);
wchar_t* ipworks_pop_getlocalfile_W(void* lpObj); // Windows only
int ipworks_pop_setlocalfile(void* lpObj, const char* lpszLocalFile);
int ipworks_pop_setlocalfile(void* lpObj, const wchar_t* lpszLocalFile); // Windows only

QString GetLocalFile();
int SetLocalFile(QString qsLocalFile);

Default Value

""

Remarks

This property is used when retrieving a message. If this property is empty, then the received data are provided through the parameters of the Transfer event. Note: If you are not retrieving the entire message (MaxLines is nonzero), no data will be written to LocalFile.

Data Type

String

LocalHost Property (POP Class)

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetLocalHost();
int SetLocalHost(const char* lpszLocalHost);

Unicode (Windows)
LPWSTR GetLocalHost();
INT SetLocalHost(LPCWSTR lpszLocalHost);

char* ipworks_pop_getlocalhost(void* lpObj);
int ipworks_pop_setlocalhost(void* lpObj, const char* lpszLocalHost);

QString GetLocalHost();
int SetLocalHost(QString qsLocalHost);

Default Value

""

Remarks

The LocalHost property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multi-homed hosts (machines with more than one IP interface).

NOTE: LocalHost is not persistent. You must always set it in code, and never in the property window.

Data Type

String

MailPort Property (POP Class)

This property includes the server port for POP (default 110).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMailPort();
int SetMailPort(int iMailPort);

Unicode (Windows)
INT GetMailPort();
INT SetMailPort(INT iMailPort);

int ipworks_pop_getmailport(void* lpObj);
int ipworks_pop_setmailport(void* lpObj, int iMailPort);

int GetMailPort();
int SetMailPort(int iMailPort);

Default Value

110

Remarks

This property contains the server port for POP (default 110). A valid port number (a value between 1 and 65535) is required for the connection to take place. The property must be set before a connection is attempted and cannot be changed once a connection is established. Any attempt to change this property while connected will fail with an error.

For implicit Secure Sockets Layer (SSL), use port 995 (please refer to the SSLStartMode property for more information).

This property is not available at design time.

Data Type

Integer

MailServer Property (POP Class)

This property includes the name or address of a mail server (internet post office server).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMailServer();
int SetMailServer(const char* lpszMailServer);

Unicode (Windows)
LPWSTR GetMailServer();
INT SetMailServer(LPCWSTR lpszMailServer);

char* ipworks_pop_getmailserver(void* lpObj);
int ipworks_pop_setmailserver(void* lpObj, const char* lpszMailServer);

QString GetMailServer();
int SetMailServer(QString qsMailServer);

Default Value

""

Remarks

This property specifies the IP address (IP number in dotted internet format) or the domain name of the mail server. It is set before a connection is attempted and cannot be changed once a connection is in progress.

If this property is set to a domain name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the class fails with an error.

If the class is configured to use a SOCKS firewall, the value assigned to this property may be preceded with an "*". If this is the case, the host name is passed to the firewall unresolved and the firewall performs the DNS resolution.

Data Type

String

MaxLines Property (POP Class)

This property includes the maximum number of message lines other than headers to retrieve.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMaxLines();
int SetMaxLines(int iMaxLines);

Unicode (Windows)
INT GetMaxLines();
INT SetMaxLines(INT iMaxLines);

int ipworks_pop_getmaxlines(void* lpObj);
int ipworks_pop_setmaxlines(void* lpObj, int iMaxLines);

int GetMaxLines();
int SetMaxLines(int iMaxLines);

Default Value

0

Remarks

This property is used to limit the number of text lines other than headers retrieved for messages. It can be used to preview message headers and a portion of their contents, without incurring the overhead of downloading the entire message.

The default value of the property is 0. In this case, the entire message will be retrieved, without interruptions. Note: If you are not retrieving the entire message (MaxLines is nonzero), no data will be written to LocalFile.

Data Type

Integer

Message Property (POP Class)

This property provides the raw message content.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessage(char* &lpMessage, int &lenMessage);

Unicode (Windows)
INT GetMessage(LPSTR &lpMessage, INT &lenMessage);

int ipworks_pop_getmessage(void* lpObj, char** lpMessage, int* lenMessage);

QByteArray GetMessage();

Default Value

""

Remarks

This property is populated after calling Retrieve and holds the raw message content. This can be used to access the data before any processing is done by the class.

This property is read-only and not available at design time.

Data Type

Binary String

MessageCc Property (POP Class)

This property includes the value of the CC header of the last retrieved message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageCc();

Unicode (Windows)
LPWSTR GetMessageCc();

char* ipworks_pop_getmessagecc(void* lpObj);

QString GetMessageCc();

Default Value

""

Remarks

This property contains the value of the CC header of the last retrieved message. The same information also may be retrieved through the Header event.

This property is read-only.

Data Type

String

MessageCount Property (POP Class)

This property includes the number of messages in the mailbox.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessageCount();

Unicode (Windows)
INT GetMessageCount();

int ipworks_pop_getmessagecount(void* lpObj);

int GetMessageCount();

Default Value

0

Remarks

This property contains the number of messages in the mailbox. When the class is not connected to the server, the value of this property is 0. When connected, it contains the number of messages in the mailbox as reported by the POP server.

This property is read-only.

Data Type

Integer

MessageDate Property (POP Class)

This property includes the value of the date header of the last retrieved message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageDate();

Unicode (Windows)
LPWSTR GetMessageDate();

char* ipworks_pop_getmessagedate(void* lpObj);

QString GetMessageDate();

Default Value

""

Remarks

This property contains the value of the date header of the last retrieved message. The same information also may be retrieved through the Header event.

This property is read-only.

Data Type

String

MessageFrom Property (POP Class)

This property includes the value of the from header of the last retrieved message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageFrom();

Unicode (Windows)
LPWSTR GetMessageFrom();

char* ipworks_pop_getmessagefrom(void* lpObj);

QString GetMessageFrom();

Default Value

""

Remarks

This property contains the value of the from header of the last retrieved message. The same information also may be retrieved through the Header event.

This property is read-only.

Data Type

String

MessageHeaderCount Property (POP Class)

The number of records in the MessageHeader arrays.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessageHeaderCount();

Unicode (Windows)
INT GetMessageHeaderCount();

int ipworks_pop_getmessageheadercount(void* lpObj);

int GetMessageHeaderCount();

Default Value

0

Remarks

This property controls the size of the following arrays:

• MessageHeaderField
• MessageHeaderValue

The array indices start at 0 and end at MessageHeaderCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

MessageHeaderField Property (POP Class)

This property contains the name of the HTTP header (this is the same case as it is delivered).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageHeaderField(int iMessageHeaderIndex);

Unicode (Windows)
LPWSTR GetMessageHeaderField(INT iMessageHeaderIndex);

char* ipworks_pop_getmessageheaderfield(void* lpObj, int messageheaderindex);

QString GetMessageHeaderField(int iMessageHeaderIndex);

Default Value

""

Remarks

This property contains the name of the HTTP Header (this is the same case as it is delivered).

The MessageHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageHeaderCount property.

This property is read-only and not available at design time.

Data Type

String

MessageHeaderValue Property (POP Class)

This property contains the header contents.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageHeaderValue(int iMessageHeaderIndex);

Unicode (Windows)
LPWSTR GetMessageHeaderValue(INT iMessageHeaderIndex);

char* ipworks_pop_getmessageheadervalue(void* lpObj, int messageheaderindex);

QString GetMessageHeaderValue(int iMessageHeaderIndex);

Default Value

""

Remarks

This property contains the Header contents.

The MessageHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageHeaderCount property.

This property is read-only and not available at design time.

Data Type

String

MessageHeadersString Property (POP Class)

This property includes a string representation of the full headers of the message as retrieved from the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageHeadersString();

Unicode (Windows)
LPWSTR GetMessageHeadersString();

char* ipworks_pop_getmessageheadersstring(void* lpObj);

QString GetMessageHeadersString();

Default Value

""

Remarks

This property contains a string representation of the full headers of the message as retrieved from the server. If the class is not connected, or MessageNumber does not contain a valid message number, the value of this property is an empty string. Otherwise, it contains the full headers of the mail message as reported by the server.

The MailServer is asked about the headers of the message only if the MessageNumber property has changed. If MessageNumber has not changed, the class returns a cached value.

Example. Connect and Retrieve Messages:

POPControl.MailServer = "MyPOPServer" POPControl.User = "username" POPControl.Password = "password" POPControl.Connect() POPControl.MessageNumber = 1 MessageText = POPControl.MessageText MessageHeadersString = POPControl.MessageHeadersString

This property is read-only.

Data Type

String

MessageNumber Property (POP Class)

This property includes the current (selected) message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessageNumber();
int SetMessageNumber(int iMessageNumber);

Unicode (Windows)
INT GetMessageNumber();
INT SetMessageNumber(INT iMessageNumber);

int ipworks_pop_getmessagenumber(void* lpObj);
int ipworks_pop_setmessagenumber(void* lpObj, int iMessageNumber);

int GetMessageNumber();
int SetMessageNumber(int iMessageNumber);

Default Value

1

Remarks

This property indicates the current (selected) message. This property specifies a message number in between 1 and MessageCount. The various class methods related to single messages use this property as a message pointer (see method descriptions and the MessageSize property).

Data Type

Integer

MessageRecipientCount Property (POP Class)

The number of records in the MessageRecipient arrays.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessageRecipientCount();

Unicode (Windows)
INT GetMessageRecipientCount();

int ipworks_pop_getmessagerecipientcount(void* lpObj);

int GetMessageRecipientCount();

Default Value

0

Remarks

This property controls the size of the following arrays:

• MessageRecipientAddress
• MessageRecipientName
• MessageRecipientOptions
• MessageRecipientType

The array indices start at 0 and end at MessageRecipientCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

MessageRecipientAddress Property (POP Class)

This property contains the email address of the recipient.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageRecipientAddress(int iRecipientIndex);

Unicode (Windows)
LPWSTR GetMessageRecipientAddress(INT iRecipientIndex);

char* ipworks_pop_getmessagerecipientaddress(void* lpObj, int recipientindex);

QString GetMessageRecipientAddress(int iRecipientIndex);

Default Value

""

Remarks

This property contains the email address of the recipient.

The RecipientIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageRecipientCount property.

This property is read-only and not available at design time.

Data Type

String

MessageRecipientName Property (POP Class)

This property contains the name of the recipient.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageRecipientName(int iRecipientIndex);

Unicode (Windows)
LPWSTR GetMessageRecipientName(INT iRecipientIndex);

char* ipworks_pop_getmessagerecipientname(void* lpObj, int recipientindex);

QString GetMessageRecipientName(int iRecipientIndex);

Default Value

""

Remarks

This property contains the name of the recipient.

The RecipientIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageRecipientCount property.

This property is read-only and not available at design time.

Data Type

String

MessageRecipientOptions Property (POP Class)

This property contains the recipient sending options (used only by SMTP).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageRecipientOptions(int iRecipientIndex);

Unicode (Windows)
LPWSTR GetMessageRecipientOptions(INT iRecipientIndex);

char* ipworks_pop_getmessagerecipientoptions(void* lpObj, int recipientindex);

QString GetMessageRecipientOptions(int iRecipientIndex);

Default Value

""

Remarks

This property contains the recipient sending options (used only by SMTP). This must be a string of RFC-compliant recipient options (used by SMTP).

One type of option is a delivery status notification sent per recipient, which is specified by RFC 1891.

component.MessageRecipientOptions(0) = "NOTIFY SUCCESS,FAILURE,DELAY";

The RecipientIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageRecipientCount property.

This property is read-only and not available at design time.

Data Type

String

MessageRecipientType Property (POP Class)

This property contains the recipient type: To, Cc, or Bcc.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessageRecipientType(int iRecipientIndex);

Unicode (Windows)
INT GetMessageRecipientType(INT iRecipientIndex);

RT_TO(0), 
RT_CC(1), 
RT_BCC(2)

int ipworks_pop_getmessagerecipienttype(void* lpObj, int recipientindex);

int GetMessageRecipientType(int iRecipientIndex);

Default Value

0

Remarks

This property contains the recipient type: To, Cc, or Bcc.

The RecipientIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageRecipientCount property.

This property is read-only and not available at design time.

Data Type

Integer

MessageReplyTo Property (POP Class)

This property includes the value of the Reply-To header of the last retrieved message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageReplyTo();

Unicode (Windows)
LPWSTR GetMessageReplyTo();

char* ipworks_pop_getmessagereplyto(void* lpObj);

QString GetMessageReplyTo();

Default Value

""

Remarks

This property contains the value of the Reply-To header of the last retrieved message. The same information also may be retrieved through the Header event.

This property is read-only.

Data Type

String

MessageSize Property (POP Class)

This property includes the size in bytes of the current message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetMessageSize();

Unicode (Windows)
INT GetMessageSize();

int ipworks_pop_getmessagesize(void* lpObj);

int GetMessageSize();

Default Value

0

Remarks

This property contains the size in bytes of the current message. If the class is not connected, or MessageNumber does not contain a valid message number, the value of this property is 0. Otherwise, it contains the size of the mail message (including headers) as reported by the server.

The MailServer is asked about the size of the message only if the MessageNumber property has changed. If MessageNumber has not changed, the class returns a cached value.

This property is read-only.

Data Type

Integer

MessageSubject Property (POP Class)

This property includes the value of the Subject header of the last retrieved message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageSubject();

Unicode (Windows)
LPWSTR GetMessageSubject();

char* ipworks_pop_getmessagesubject(void* lpObj);

QString GetMessageSubject();

Default Value

""

Remarks

This property contains the value of the Subject header of the last retrieved message. The same information also may be retrieved through the Header event.

This property is read-only.

Data Type

String

MessageText Property (POP Class)

This property includes the full text of the message as retrieved from the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageText();

Unicode (Windows)
LPWSTR GetMessageText();

char* ipworks_pop_getmessagetext(void* lpObj);

QString GetMessageText();

Default Value

""

Remarks

This property contains the full text of the message as retrieved from the server. If the class is not connected, or MessageNumber does not contain a valid message number, the value of this property is an empty string. Otherwise, it contains the text of the mail message as reported by the server (a maximum of MaxLines).

The MailServer is asked about the text of the message only if the MessageNumber property has changed. If MessageNumber has not changed, the class returns a cached value.

Example. Connect and Retrieve Messages:

POPControl.MailServer = "MyPOPServer" POPControl.User = "username" POPControl.Password = "password" POPControl.Connect() POPControl.MessageNumber = 1 MessageText = POPControl.MessageText MessageHeaders = POPControl.MessageHeaders

This property is read-only.

Data Type

String

MessageTo Property (POP Class)

This property includes the value of the To header of the last retrieved message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageTo();

Unicode (Windows)
LPWSTR GetMessageTo();

char* ipworks_pop_getmessageto(void* lpObj);

QString GetMessageTo();

Default Value

""

Remarks

This property contains the value of the To header of the last retrieved message. The same information also may be retrieved through the Header event.

This property is read-only.

Data Type

String

MessageUID Property (POP Class)

This property includes the unique identifier of the message as specified by the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetMessageUID();

Unicode (Windows)
LPWSTR GetMessageUID();

char* ipworks_pop_getmessageuid(void* lpObj);

QString GetMessageUID();

Default Value

""

Remarks

This property contains the unique identifier of the message as specified by the server. If the class is not connected, or MessageNumber does not contain a valid message number, the value of this property is an empty string. Otherwise, it contains the UID of the mail message as reported by the server.

The MailServer is asked about the UID of the message only if the MessageNumber property has changed. If MessageNumber has not changed, the class returns a cached value.

This property is read-only.

Data Type

String

Password Property (POP Class)

This property includes the password for the mailbox user.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetPassword();
int SetPassword(const char* lpszPassword);

Unicode (Windows)
LPWSTR GetPassword();
INT SetPassword(LPCWSTR lpszPassword);

char* ipworks_pop_getpassword(void* lpObj);
int ipworks_pop_setpassword(void* lpObj, const char* lpszPassword);

QString GetPassword();
int SetPassword(QString qsPassword);

Default Value

""

Remarks

This property contains the password for the mailbox user. This property must be set before the class connects to the MailServer.

Data Type

String

SSLAcceptServerCertEncoded Property (POP Class)

This is the certificate (PEM/Base64 encoded).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLAcceptServerCertEncoded(char* &lpSSLAcceptServerCertEncoded, int &lenSSLAcceptServerCertEncoded);
int SetSSLAcceptServerCertEncoded(const char* lpSSLAcceptServerCertEncoded, int lenSSLAcceptServerCertEncoded);

Unicode (Windows)
INT GetSSLAcceptServerCertEncoded(LPSTR &lpSSLAcceptServerCertEncoded, INT &lenSSLAcceptServerCertEncoded);
INT SetSSLAcceptServerCertEncoded(LPCSTR lpSSLAcceptServerCertEncoded, INT lenSSLAcceptServerCertEncoded);

int ipworks_pop_getsslacceptservercertencoded(void* lpObj, char** lpSSLAcceptServerCertEncoded, int* lenSSLAcceptServerCertEncoded);
int ipworks_pop_setsslacceptservercertencoded(void* lpObj, const char* lpSSLAcceptServerCertEncoded, int lenSSLAcceptServerCertEncoded);

QByteArray GetSSLAcceptServerCertEncoded();
int SetSSLAcceptServerCertEncoded(QByteArray qbaSSLAcceptServerCertEncoded);

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLAcceptServerCertStore and SSLAcceptServerCertSubject properties also may be used to specify a certificate.

When SSLAcceptServerCertEncoded is set, a search is initiated in the current SSLAcceptServerCertStore for the private key of the certificate. If the key is found, SSLAcceptServerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLAcceptServerCertSubject is set to an empty string.

This property is not available at design time.

Data Type

Binary String

SSLCertEncoded Property (POP Class)

This is the certificate (PEM/Base64 encoded).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLCertEncoded(char* &lpSSLCertEncoded, int &lenSSLCertEncoded);
int SetSSLCertEncoded(const char* lpSSLCertEncoded, int lenSSLCertEncoded);

Unicode (Windows)
INT GetSSLCertEncoded(LPSTR &lpSSLCertEncoded, INT &lenSSLCertEncoded);
INT SetSSLCertEncoded(LPCSTR lpSSLCertEncoded, INT lenSSLCertEncoded);

int ipworks_pop_getsslcertencoded(void* lpObj, char** lpSSLCertEncoded, int* lenSSLCertEncoded);
int ipworks_pop_setsslcertencoded(void* lpObj, const char* lpSSLCertEncoded, int lenSSLCertEncoded);

QByteArray GetSSLCertEncoded();
int SetSSLCertEncoded(QByteArray qbaSSLCertEncoded);

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLCertStore and SSLCertSubject properties also may be used to specify a certificate.

When SSLCertEncoded is set, a search is initiated in the current SSLCertStore for the private key of the certificate. If the key is found, SSLCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLCertSubject is set to an empty string.

This property is not available at design time.

Data Type

Binary String

SSLCertStore Property (POP Class)

This is the name of the certificate store for the client certificate.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLCertStore(char* &lpSSLCertStore, int &lenSSLCertStore);
int SetSSLCertStore(const char* lpSSLCertStore, int lenSSLCertStore);

Unicode (Windows)
INT GetSSLCertStore(LPSTR &lpSSLCertStore, INT &lenSSLCertStore);
INT SetSSLCertStore(LPCSTR lpSSLCertStore, INT lenSSLCertStore);

int ipworks_pop_getsslcertstore(void* lpObj, char** lpSSLCertStore, int* lenSSLCertStore);
int ipworks_pop_setsslcertstore(void* lpObj, const char* lpSSLCertStore, int lenSSLCertStore);

QByteArray GetSSLCertStore();
int SetSSLCertStore(QByteArray qbaSSLCertStore);

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The SSLCertStoreType property denotes the type of the certificate store specified by SSLCertStore. If the store is password protected, specify the password in SSLCertStorePassword.

SSLCertStore is used in conjunction with the SSLCertSubject property to specify client certificates. If SSLCertStore has a value, and SSLCertSubject or SSLCertEncoded is set, a search for a certificate is initiated. Please see the SSLCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

Data Type

Binary String

SSLCertStorePassword Property (POP Class)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetSSLCertStorePassword();
int SetSSLCertStorePassword(const char* lpszSSLCertStorePassword);

Unicode (Windows)
LPWSTR GetSSLCertStorePassword();
INT SetSSLCertStorePassword(LPCWSTR lpszSSLCertStorePassword);

char* ipworks_pop_getsslcertstorepassword(void* lpObj);
int ipworks_pop_setsslcertstorepassword(void* lpObj, const char* lpszSSLCertStorePassword);

QString GetSSLCertStorePassword();
int SetSSLCertStorePassword(QString qsSSLCertStorePassword);

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Data Type

String

SSLCertStoreType Property (POP Class)

This is the type of certificate store for this certificate.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLCertStoreType();
int SetSSLCertStoreType(int iSSLCertStoreType);

Unicode (Windows)
INT GetSSLCertStoreType();
INT SetSSLCertStoreType(INT iSSLCertStoreType);

CST_USER(0), 
CST_MACHINE(1), 
CST_PFXFILE(2), 
CST_PFXBLOB(3), 
CST_JKSFILE(4), 
CST_JKSBLOB(5), 
CST_PEMKEY_FILE(6), 
CST_PEMKEY_BLOB(7), 
CST_PUBLIC_KEY_FILE(8), 
CST_PUBLIC_KEY_BLOB(9), 
CST_SSHPUBLIC_KEY_BLOB(10), 
CST_P7BFILE(11), 
CST_P7BBLOB(12), 
CST_SSHPUBLIC_KEY_FILE(13), 
CST_PPKFILE(14), 
CST_PPKBLOB(15), 
CST_XMLFILE(16), 
CST_XMLBLOB(17), 
CST_JWKFILE(18), 
CST_JWKBLOB(19), 
CST_SECURITY_KEY(20), 
CST_BCFKSFILE(21), 
CST_BCFKSBLOB(22), 
CST_PKCS11(23), 
CST_AUTO(99)

int ipworks_pop_getsslcertstoretype(void* lpObj);
int ipworks_pop_setsslcertstoretype(void* lpObj, int iSSLCertStoreType);

int GetSSLCertStoreType();
int SetSSLCertStoreType(int iSSLCertStoreType);

Default Value

0

Remarks

This is the type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

Data Type

Integer

SSLCertSubject Property (POP Class)

This is the subject of the certificate used for client authentication.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetSSLCertSubject();
int SetSSLCertSubject(const char* lpszSSLCertSubject);

Unicode (Windows)
LPWSTR GetSSLCertSubject();
INT SetSSLCertSubject(LPCWSTR lpszSSLCertSubject);

char* ipworks_pop_getsslcertsubject(void* lpObj);
int ipworks_pop_setsslcertsubject(void* lpObj, const char* lpszSSLCertSubject);

QString GetSSLCertSubject();
int SetSSLCertSubject(QString qsSSLCertSubject);

Default Value

""

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

Data Type

String

SSLEnabled Property (POP Class)

Whether TLS/SSL is enabled.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLEnabled();
int SetSSLEnabled(int bSSLEnabled);

Unicode (Windows)
BOOL GetSSLEnabled();
INT SetSSLEnabled(BOOL bSSLEnabled);

int ipworks_pop_getsslenabled(void* lpObj);
int ipworks_pop_setsslenabled(void* lpObj, int bSSLEnabled);

bool GetSSLEnabled();
int SetSSLEnabled(bool bSSLEnabled);

Default Value

FALSE

Remarks

This setting specifies whether TLS/SSL is enabled in the class. When False (default) the class operates in plaintext mode. When True TLS/SSL is enabled.

TLS/SSL may also be enabled by setting SSLStartMode. Setting SSLStartMode will automatically update this property value.

This property is not available at design time.

Data Type

Boolean

SSLProvider Property (POP Class)

This specifies the SSL/TLS implementation to use.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLProvider();
int SetSSLProvider(int iSSLProvider);

Unicode (Windows)
INT GetSSLProvider();
INT SetSSLProvider(INT iSSLProvider);

SSLP_AUTOMATIC(0), 
SSLP_PLATFORM(1), 
SSLP_INTERNAL(2)

int ipworks_pop_getsslprovider(void* lpObj);
int ipworks_pop_setsslprovider(void* lpObj, int iSSLProvider);

int GetSSLProvider();
int SetSSLProvider(int iSSLProvider);

Default Value

0

Remarks

This property specifies the SSL/TLS implementation to use. In most cases the default value of 0 (Automatic) is recommended and should not be changed. When set to 0 (Automatic) the class will select whether to use the platform implementation or the internal implementation depending on the operating system as well as the TLS version being used.

Possible values are:

In most cases using the default value (Automatic) is recommended. The class will select a provider depending on the current platform.

When Automatic is selected, on Windows the class will use the platform implementation. On Linux/macOS the class will use the internal implementation. When TLS 1.3 is enabled via SSLEnabledProtocols the internal implementation is used on all platforms.

Data Type

Integer

SSLServerCertEncoded Property (POP Class)

This is the certificate (PEM/Base64 encoded).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLServerCertEncoded(char* &lpSSLServerCertEncoded, int &lenSSLServerCertEncoded);

Unicode (Windows)
INT GetSSLServerCertEncoded(LPSTR &lpSSLServerCertEncoded, INT &lenSSLServerCertEncoded);

int ipworks_pop_getsslservercertencoded(void* lpObj, char** lpSSLServerCertEncoded, int* lenSSLServerCertEncoded);

QByteArray GetSSLServerCertEncoded();

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLServerCertStore and SSLServerCertSubject properties also may be used to specify a certificate.

When SSLServerCertEncoded is set, a search is initiated in the current SSLServerCertStore for the private key of the certificate. If the key is found, SSLServerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLServerCertSubject is set to an empty string.

This property is read-only and not available at design time.

Data Type

Binary String

SSLStartMode Property (POP Class)

Determines how the class starts the SSL negotiation.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetSSLStartMode();
int SetSSLStartMode(int iSSLStartMode);

Unicode (Windows)
INT GetSSLStartMode();
INT SetSSLStartMode(INT iSSLStartMode);

SSL_AUTOMATIC(0), 
SSL_IMPLICIT(1), 
SSL_EXPLICIT(2), 
SSL_NONE(3)

int ipworks_pop_getsslstartmode(void* lpObj);
int ipworks_pop_setsslstartmode(void* lpObj, int iSSLStartMode);

int GetSSLStartMode();
int SetSSLStartMode(int iSSLStartMode);

Default Value

3

Remarks

The SSLStartMode property may have one of the following values:

Data Type

Integer

Timeout Property (POP Class)

A timeout for the class.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int GetTimeout();
int SetTimeout(int iTimeout);

Unicode (Windows)
INT GetTimeout();
INT SetTimeout(INT iTimeout);

int ipworks_pop_gettimeout(void* lpObj);
int ipworks_pop_settimeout(void* lpObj, int iTimeout);

int GetTimeout();
int SetTimeout(int iTimeout);

Default Value

60

Remarks

If the Timeout property is set to 0, all operations will run uninterrupted until successful completion or an error condition is encountered.

If Timeout is set to a positive value, the class will wait for the operation to complete before returning control.

The class will use DoEvents to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not "freeze" and remains responsive.

If Timeout expires, and the operation is not yet complete, the class fails with an error.

Please note that by default, all timeouts are inactivity timeouts, i.e. the timeout period is extended by Timeout seconds when any amount of data is successfully sent or received.

The default value for the Timeout property is 60 seconds.

Data Type

Integer

TotalSize Property (POP Class)

This property includes cumulative size in bytes of messages in the mailbox (including headers).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int64 GetTotalSize();

Unicode (Windows)
LONG64 GetTotalSize();

int64 ipworks_pop_gettotalsize(void* lpObj);

qint64 GetTotalSize();

Default Value

0

Remarks

This property contains the cumulative size in bytes of messages in the mailbox (including headers). When the class is not connected to the server, the value of this property is 0. When connected, it contains the cumulative size of all the messages in the mail box as reported by the POP server.

This property is read-only.

Data Type

Long64

User Property (POP Class)

This property includes the user identifier for the mailbox.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* GetUser();
int SetUser(const char* lpszUser);

Unicode (Windows)
LPWSTR GetUser();
INT SetUser(LPCWSTR lpszUser);

char* ipworks_pop_getuser(void* lpObj);
int ipworks_pop_setuser(void* lpObj, const char* lpszUser);

QString GetUser();
int SetUser(QString qsUser);

Default Value

""

Remarks

This property contains the user identifier for the mailbox. This property must be set before the class connects to the MailServer.

Data Type

String

Config Method (POP Class)

Sets or retrieves a configuration setting.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* Config(const char* lpszConfigurationString);

Unicode (Windows)
LPWSTR Config(LPCWSTR lpszConfigurationString);

char* ipworks_pop_config(void* lpObj, const char* lpszConfigurationString);

QString Config(const QString& qsConfigurationString);

Remarks

Config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

Connect Method (POP Class)

This method connects to the mail server and attempts to log in.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int Connect();

Unicode (Windows)
INT Connect();

int ipworks_pop_connect(void* lpObj);

int Connect();

Remarks

This method connects to the mail server and attempts to log in using the current User and Password. Then it retrieves the initial statistics about the mailbox contents (MessageCount and TotalSize).

Example. Connect to POP Mailbox:

POPControl.MailServer = "MyPOPServer" POPControl.User = "username" POPControl.Password = "password" POPControl.Connect() POPControl.MessageNumber = 1 POPControl.Retrieve() MessageText = POPControl.MessageText MessageHeaders = POPControl.MessageHeaders

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Delete Method (POP Class)

This method deletes a message specified by MessageNumber on the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int Delete();

Unicode (Windows)
INT Delete();

int ipworks_pop_delete(void* lpObj);

int Delete();

Remarks

This method asks the MailServer to delete the message specified by MessageNumber. The message will not actually be deleted from the server until the connection is closed. To cancel a previous Delete, use the Reset method.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Disconnect Method (POP Class)

This method disconnects from the mail server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int Disconnect();

Unicode (Windows)
INT Disconnect();

int ipworks_pop_disconnect(void* lpObj);

int Disconnect();

Remarks

This method makes the class disconnect from the MailServer by sending the QUIT command. If successful, all changes to the mailbox are committed by the server. Otherwise, changes are rolled back to the initial state that the server was in before the connection.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

DoEvents Method (POP Class)

Processes events from the internal message queue.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int DoEvents();

Unicode (Windows)
INT DoEvents();

int ipworks_pop_doevents(void* lpObj);

int DoEvents();

Remarks

When DoEvents is called, the class processes any available events. If no events are available, it waits for a preset period of time, and then returns.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Interrupt Method (POP Class)

Interrupt the current method.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int Interrupt();

Unicode (Windows)
INT Interrupt();

int ipworks_pop_interrupt(void* lpObj);

int Interrupt();

Remarks

If there is no method in progress, Interrupt simply returns, doing nothing.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListMessageSizes Method (POP Class)

This method retrieves a list of all message sizes from the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int ListMessageSizes();

Unicode (Windows)
INT ListMessageSizes();

int ipworks_pop_listmessagesizes(void* lpObj);

int ListMessageSizes();

Remarks

This message retrieves a list of all message sizes from the server. For each message listed, a MessageList event will fire containing the number and size of the message.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListMessageUIDs Method (POP Class)

This method retrieves a list of all message UIDs from the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int ListMessageUIDs();

Unicode (Windows)
INT ListMessageUIDs();

int ipworks_pop_listmessageuids(void* lpObj);

int ListMessageUIDs();

Remarks

This method retrieves a list of all message UIDs from the server. For each message listed, a MessageList event will fire containing the number and UID of the message.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

LocalizeDate Method (POP Class)

This method converts a valid RFC 822 message date to a local date and time.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* LocalizeDate(const char* lpszDateTime);

Unicode (Windows)
LPWSTR LocalizeDate(LPCWSTR lpszDateTime);

char* ipworks_pop_localizedate(void* lpObj, const char* lpszDateTime);

QString LocalizeDate(const QString& qsDateTime);

Remarks

This method can be used to convert an RFC 822 date and time string to the corresponding local date and time.

Note: Dates will be returned in the format: "MM/dd/yyyy hh:mm:ss".

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

QueryMessageSize Method (POP Class)

This method returns the size in bytes of the current message.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int64 QueryMessageSize();

Unicode (Windows)
LONG64 QueryMessageSize();

int64 ipworks_pop_querymessagesize(void* lpObj);

qint64 QueryMessageSize();

Remarks

This method queries the server for the size in bytes of the message specified by MessageNumber. The method returns the size (in bytes) of the message.

If the class is not connected, or MessageNumber does not contain a valid message number, the return value is 0. Otherwise, it returns the size of the mail message (including headers) as reported by the server.

The MailServer is asked about the size of the message only if the MessageNumber property has changed. If MessageNumber has not changed, the class returns a cached value.

Error Handling (C++)

This method returns a Long64 value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

QueryMessageUID Method (POP Class)

This method returns the unique identifier (UID) of the message as specified by the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
char* QueryMessageUID();

Unicode (Windows)
LPWSTR QueryMessageUID();

char* ipworks_pop_querymessageuid(void* lpObj);

QString QueryMessageUID();

Remarks

This method returns the unique identifier (UID) of the message specified by MessageNumber. If the class is not connected, or MessageNumber does not contain a valid message number, the return value of this method is an empty string. Otherwise, it returns the UID of the mail message as reported by the server.

The MailServer is asked about the UID of the message only if the MessageNumber property has changed. If MessageNumber has not changed, the class returns a cached value.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

QueryTotalSize Method (POP Class)

This method returns the cumulative size in bytes of messages in the mailbox (including headers).

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int64 QueryTotalSize();

Unicode (Windows)
LONG64 QueryTotalSize();

int64 ipworks_pop_querytotalsize(void* lpObj);

qint64 QueryTotalSize();

Remarks

This method returns the cumulative size in bytes of messages in the mailbox (including headers). When the class is not connected to the server, the return value of this method is 0. When connected, it returns the cumulative size of all the messages in the mail box as reported by the POP server.

Error Handling (C++)

This method returns a Long64 value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

Reset Method (POP Class)

This method resets all changes and revert back to the state when the user first connected.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int Reset();

Unicode (Windows)
INT Reset();

int ipworks_pop_reset(void* lpObj);

int Reset();

Remarks

This method is used to reset all changes and revert back to the state when the user first connected. Asks the MailServer to reset all changes and revert back to the state it was when connected.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Retrieve Method (POP Class)

This method retrieves a message specified by MessageNumber from the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int Retrieve();

Unicode (Windows)
INT Retrieve();

int ipworks_pop_retrieve(void* lpObj);

int Retrieve();

Remarks

This method is used to retrieve a message specified by MessageNumber from the server. It asks the MailServer to retrieve the message specified by MessageNumber. The message headers will arrive in the Header event, and the message text will arrive in the Transfer event.

The MaxLines property defines the number of lines retrieved.

Example. Connect and Retrieve Messages:

POPControl.MailServer = "MyPOPServer" POPControl.User = "username" POPControl.Password = "password" POPControl.Connect() POPControl.MessageNumber = 1 POPControl.Retrieve()

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

RetrieveHeaders Method (POP Class)

This method retrieves headers for a message specified by MessageNumber .

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int RetrieveHeaders();

Unicode (Windows)
INT RetrieveHeaders();

int ipworks_pop_retrieveheaders(void* lpObj);

int RetrieveHeaders();

Remarks

Calling this method will retrieve the headers for the message specified by the MessageNumber property. The message headers will be provided by the Header event and also stored in the MessageHeaders property.

Example. Connect and Retrieve Message Headers:

POPControl.MailServer = "MyPOPServer" POPControl.User = "username" POPControl.Password = "password" POPControl.Connect() POPControl.MessageNumber = 1 POPControl.RetrieveHeaders()

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

SendCommand Method (POP Class)

Sends the exact command directly to the server.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int SendCommand(const char* lpszCommand);

Unicode (Windows)
INT SendCommand(LPCWSTR lpszCommand);

int ipworks_pop_sendcommand(void* lpObj, const char* lpszCommand);

int SendCommand(const QString& qsCommand);

Remarks

This method sends the command specified by Command to the server exactly as it is provided. Use this method to send additional or custom commands directly to the server.

After calling this method check the LastReply property and/or monitor the PITrail event to obtain the server's response.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

SetMessageStream Method (POP Class)

This method sets the stream to which the message downloaded from the server will be written.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
int SetMessageStream(IPWorksStream* sMessageStream);

Unicode (Windows)
INT SetMessageStream(IPWorksStream* sMessageStream);

int ipworks_pop_setmessagestream(void* lpObj, IPWorksStream* sMessageStream);

int SetMessageStream(IPWorksStream* sMessageStream);

Remarks

This method sets the stream to which the message downloaded from the server will be written. If a download stream is set before the Retrieve method is called, the downloaded data will be written to the stream. The stream should be open and normally set to position 0. The class will automatically close this stream if CloseStreamAfterTransfer is set to True (default). If the stream is closed, you will need to call SetMessageStream again before calling Retrieve again. The downloaded content will be written starting at the current position in the stream.

Note: SetMessageStream and LocalFile will reset the other.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ConnectionStatus Event (POP Class)

This event is fired to indicate changes in the connection state.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireConnectionStatus(POPConnectionStatusEventParams *e);

typedef struct {
  const char *ConnectionEvent;
  int StatusCode;
  const char *Description;
  int reserved;
} POPConnectionStatusEventParams;


Unicode (Windows)
virtual INT FireConnectionStatus(POPConnectionStatusEventParams *e);

typedef struct {
  LPCWSTR ConnectionEvent;
  INT StatusCode;
  LPCWSTR Description;
  INT reserved;
} POPConnectionStatusEventParams;

#define EID_POP_CONNECTIONSTATUS 1

virtual INT IPWORKS_CALL FireConnectionStatus(LPSTR &lpszConnectionEvent, INT &iStatusCode, LPSTR &lpszDescription);

class POPConnectionStatusEventParams {
public:
  const QString &ConnectionEvent();

  int StatusCode();

  const QString &Description();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void ConnectionStatus(POPConnectionStatusEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireConnectionStatus(POPConnectionStatusEventParams *e) {...}

Remarks

The ConnectionStatus event is fired when the connection state changes: for example, completion of a firewall or proxy connection or completion of a security handshake.

The ConnectionEvent parameter indicates the type of connection event. Values may include the following:

EndTransfer Event (POP Class)

This event is fired when the message completes transferring.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireEndTransfer(POPEndTransferEventParams *e);

typedef struct {
  int Direction;
  int reserved;
} POPEndTransferEventParams;


Unicode (Windows)
virtual INT FireEndTransfer(POPEndTransferEventParams *e);

typedef struct {
  INT Direction;
  INT reserved;
} POPEndTransferEventParams;

#define EID_POP_ENDTRANSFER 2

virtual INT IPWORKS_CALL FireEndTransfer(INT &iDirection);

class POPEndTransferEventParams {
public:
  int Direction();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void EndTransfer(POPEndTransferEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireEndTransfer(POPEndTransferEventParams *e) {...}

Remarks

The EndTransfer event is fired when the message body completes transferring from the server to the local host.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

Error Event (POP Class)

Fired when information is available about errors during data delivery.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireError(POPErrorEventParams *e);

typedef struct {
  int ErrorCode;
  const char *Description;
  int reserved;
} POPErrorEventParams;


Unicode (Windows)
virtual INT FireError(POPErrorEventParams *e);

typedef struct {
  INT ErrorCode;
  LPCWSTR Description;
  INT reserved;
} POPErrorEventParams;

#define EID_POP_ERROR 3

virtual INT IPWORKS_CALL FireError(INT &iErrorCode, LPSTR &lpszDescription);

class POPErrorEventParams {
public:
  int ErrorCode();

  const QString &Description();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Error(POPErrorEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireError(POPErrorEventParams *e) {...}

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

Header Event (POP Class)

This event is fired for every message header being retrieved.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireHeader(POPHeaderEventParams *e);

typedef struct {
  const char *Field;
  const char *Value;
  int reserved;
} POPHeaderEventParams;


Unicode (Windows)
virtual INT FireHeader(POPHeaderEventParams *e);

typedef struct {
  LPCWSTR Field;
  LPCWSTR Value;
  INT reserved;
} POPHeaderEventParams;

#define EID_POP_HEADER 4

virtual INT IPWORKS_CALL FireHeader(LPSTR &lpszField, LPSTR &lpszValue);

class POPHeaderEventParams {
public:
  const QString &Field();

  const QString &Value();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Header(POPHeaderEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireHeader(POPHeaderEventParams *e) {...}

Remarks

The Field parameter contains the name of the header (in the same case as it is delivered). The Value parameter contains the header contents.

If the header line being retrieved is a continuation header line, then the Field parameter contains "" (empty string).

MessageList Event (POP Class)

This event is fired for every message listed by ListMessageSizes and/or ListMessageUIDs .

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireMessageList(POPMessageListEventParams *e);

typedef struct {
  int MessageNumber;
  const char *MessageUID;
  int MessageSize;
  int reserved;
} POPMessageListEventParams;


Unicode (Windows)
virtual INT FireMessageList(POPMessageListEventParams *e);

typedef struct {
  INT MessageNumber;
  LPCWSTR MessageUID;
  INT MessageSize;
  INT reserved;
} POPMessageListEventParams;

#define EID_POP_MESSAGELIST 5

virtual INT IPWORKS_CALL FireMessageList(INT &iMessageNumber, LPSTR &lpszMessageUID, INT &iMessageSize);

class POPMessageListEventParams {
public:
  int MessageNumber();

  const QString &MessageUID();

  int MessageSize();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void MessageList(POPMessageListEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireMessageList(POPMessageListEventParams *e) {...}

Remarks

When ListMessageSizes is called, MessageSize is valid, and MessageUID is always an empty string.

When ListMessageUIDs is called, MessageUID is valid, and MessageSize is 0.

PITrail Event (POP Class)

Traces the commands sent to the mail server, and the respective replies.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FirePITrail(POPPITrailEventParams *e);

typedef struct {
  int Direction;
  const char *Message;
  int reserved;
} POPPITrailEventParams;


Unicode (Windows)
virtual INT FirePITrail(POPPITrailEventParams *e);

typedef struct {
  INT Direction;
  LPCWSTR Message;
  INT reserved;
} POPPITrailEventParams;

#define EID_POP_PITRAIL 6

virtual INT IPWORKS_CALL FirePITrail(INT &iDirection, LPSTR &lpszMessage);

class POPPITrailEventParams {
public:
  int Direction();

  const QString &Message();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void PITrail(POPPITrailEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FirePITrail(POPPITrailEventParams *e) {...}

Remarks

The PITrail event is useful for debugging purposes. It shows all the interaction between the client and the server, line by line, except for message header and body transfers.

The Message parameter contains the full text of the message. The Direction parameter shows the originator of the message:

SSLServerAuthentication Event (POP Class)

Fired after the server presents its certificate to the client.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireSSLServerAuthentication(POPSSLServerAuthenticationEventParams *e);

typedef struct {
  const char *CertEncoded;
  int lenCertEncoded;
  const char *CertSubject;
  const char *CertIssuer;
  const char *Status;
  int Accept;
  int reserved;
} POPSSLServerAuthenticationEventParams;


Unicode (Windows)
virtual INT FireSSLServerAuthentication(POPSSLServerAuthenticationEventParams *e);

typedef struct {
  LPCSTR CertEncoded;
  INT lenCertEncoded;
  LPCWSTR CertSubject;
  LPCWSTR CertIssuer;
  LPCWSTR Status;
  BOOL Accept;
  INT reserved;
} POPSSLServerAuthenticationEventParams;

#define EID_POP_SSLSERVERAUTHENTICATION 7

virtual INT IPWORKS_CALL FireSSLServerAuthentication(LPSTR &lpCertEncoded, INT &lenCertEncoded, LPSTR &lpszCertSubject, LPSTR &lpszCertIssuer, LPSTR &lpszStatus, BOOL &bAccept);

class POPSSLServerAuthenticationEventParams {
public:
  const QByteArray &CertEncoded();

  const QString &CertSubject();

  const QString &CertIssuer();

  const QString &Status();

  bool Accept();
  void SetAccept(bool bAccept);

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void SSLServerAuthentication(POPSSLServerAuthenticationEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireSSLServerAuthentication(POPSSLServerAuthenticationEventParams *e) {...}

Remarks

During this event, the client can decide whether or not to continue with the connection process. The Accept parameter is a recommendation on whether to continue or close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When Accept is False, Status shows why the verification failed (otherwise, Status contains the string OK). If it is decided to continue, you can override and accept the certificate by setting the Accept parameter to True.

SSLStatus Event (POP Class)

Fired when secure connection progress messages are available.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireSSLStatus(POPSSLStatusEventParams *e);

typedef struct {
  const char *Message;
  int reserved;
} POPSSLStatusEventParams;


Unicode (Windows)
virtual INT FireSSLStatus(POPSSLStatusEventParams *e);

typedef struct {
  LPCWSTR Message;
  INT reserved;
} POPSSLStatusEventParams;

#define EID_POP_SSLSTATUS 8

virtual INT IPWORKS_CALL FireSSLStatus(LPSTR &lpszMessage);

class POPSSLStatusEventParams {
public:
  const QString &Message();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void SSLStatus(POPSSLStatusEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireSSLStatus(POPSSLStatusEventParams *e) {...}

Remarks

The event is fired for informational and logging purposes only. This event tracks the progress of the connection.

StartTransfer Event (POP Class)

This event is fired when the message starts transferring.

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireStartTransfer(POPStartTransferEventParams *e);

typedef struct {
  int Direction;
  int reserved;
} POPStartTransferEventParams;


Unicode (Windows)
virtual INT FireStartTransfer(POPStartTransferEventParams *e);

typedef struct {
  INT Direction;
  INT reserved;
} POPStartTransferEventParams;

#define EID_POP_STARTTRANSFER 9

virtual INT IPWORKS_CALL FireStartTransfer(INT &iDirection);

class POPStartTransferEventParams {
public:
  int Direction();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void StartTransfer(POPStartTransferEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireStartTransfer(POPStartTransferEventParams *e) {...}

Remarks

The StartTransfer event is fired when the message body starts transferring from the server to the local host.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

Transfer Event (POP Class)

This event is fired when the message is transferred from MailServer .

Syntax

• C++
• C
• Qt

ANSI (Cross Platform)
virtual int FireTransfer(POPTransferEventParams *e);

typedef struct {
  int Direction;
  int64 BytesTransferred;
  int PercentDone;
  const char *Text;
  int lenText;
  int EOL;
  int reserved;
} POPTransferEventParams;


Unicode (Windows)
virtual INT FireTransfer(POPTransferEventParams *e);

typedef struct {
  INT Direction;
  LONG64 BytesTransferred;
  INT PercentDone;
  LPCSTR Text;
  INT lenText;
  BOOL EOL;
  INT reserved;
} POPTransferEventParams;

#define EID_POP_TRANSFER 10

virtual INT IPWORKS_CALL FireTransfer(INT &iDirection, LONG64 &lBytesTransferred, INT &iPercentDone, LPSTR &lpText, INT &lenText, BOOL &bEOL);

class POPTransferEventParams {
public:
  int Direction();

  qint64 BytesTransferred();

  int PercentDone();

  const QByteArray &Text();

  bool EOL();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Transfer(POPTransferEventParams *e);

// Or, subclass POP and override this emitter function.
virtual int FireTransfer(POPTransferEventParams *e) {...}

Remarks

The Text parameter contains the portion of the message data to be retrieved.

The BytesTransferred parameter contains the number of bytes transferred since the beginning of the message, including header bytes. At the end of transmission (i.e., when the last Transfer event is fired), BytesTransferred equals the value of the MessageSize property.

The Transfer event is fired for every line of the message. For complete lines, there is no terminating newline at the end of the Text parameter, and EOL is True. The EOL parameter is False when a line is broken (usually for being too long).

A faster way to retrieve a message is to assign a value to the LocalFile property and use the Transfer event to check the progress rather than to get the actual data.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

The PercentDone parameter shows the progress of the transfer in the corresponding direction. If PercentDone can not be calculated the value will be -1.

Note: Events are not re-entrant. Performing time-consuming operations within this event will prevent it from firing again in a timely manner and may affect overall performance.

Note: For the PercentDone parameter value to be correct, the GetMessageSize configuration setting must be set to True.

IPWorksStream Type

Syntax

IPWorksStream (declared in ipworks.h)

Remarks

The POP class includes one or more API members that take a stream object as a parameter. To use such API members, create a concrete class that implements the IPWorksStream interface and pass the POP class an instance of that concrete class.

When implementing the IPWorksStream interface's properties and methods, they must behave as described below. If the concrete class's implementation does not behave as expected, undefined behavior may occur.

bool CanRead() { return true; }

bool CanSeek() { return true; }

bool CanWrite() { return true; }

int64 GetLength() = 0;

void Close() {}

int Flush() { return 0; }

int Read(void* buffer, int count) = 0;

int64 Seek(int64 offset, int seekOrigin) = 0;

int Write(const void* buffer, int count) = 0;

Config Settings (POP Class)

POP Config Settings

TCPClient Config Settings

SSL Config Settings

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

Socket Config Settings

Base Config Settings

Trappable Errors (POP Class)

Error Handling (C++)

Call the GetLastErrorCode() method to obtain the last called method's result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. Known error codes are listed below. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

POP Errors

The class may also return one of the following error codes, which are inherited from other classes.

TCPClient Errors

SSL Errors

TCP/IP Errors