Save Method
Saves the user database to a file.
Syntax
int Save(const QString& qsFilename, const QString& qsPassword);
Remarks
Use this method to save the settings of all users to a file.
Use a non-empty Password to protect the database.
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.)