ListGroups Method
Lists all groups on the server.
Syntax
int ListGroups();
Remarks
This method asks the server to list all its newsgroups. Use this method with caution as listing groups may take quite a long over slow links. The group names and other information are returned via the GroupList event.
If a connection to the NewsServer doesn't already exist, a new one is created.
Error Handling
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.)