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GetLastErrorMessage

function

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.