GetLastErrorMessage
Delphi
function GetLastErrorMessage: string;
C++Builder
System::UnicodeString __fastcall GetLastErrorMessage();
C#
public string GetLastErrorMessage();
VB.NET
Public Function GetLastErrorMessage() As String
C++/Qt
wchar_t * GetLastErrorMessage ();
returns the last error message that eventually occurred during the URL connection of the Datastead RTSP/RTMP/HTTP/ONVIF Source filter, if any.