'Declaration
Public Function TwainUserClosedSource() As Boolean
public bool TwainUserClosedSource()
public function TwainUserClosedSource(): Boolean;
public function TwainUserClosedSource() : boolean;
public: bool TwainUserClosedSource();
public: bool TwainUserClosedSource();
Return Value
True if during the last acquisition process the user asked to close the device, else False.