DeleteCategory Method
Deletes a mail category.
Syntax
int DeleteCategory(const QString& qsid);
Remarks
This method deletes a mail category from the current mailbox. This method will not update the Categories* properties.
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.)