Opens the source with the given name. If another source is open, closes it and attempts to open the specified source. First this method for each scanning process or to set the TWAIN state to 4 (TWAIN_SOURCE_OPEN) when the TWAIN state is 3 (TWAIN_SM_OPEN) or 2 (TWAIN_SM_LOADED) or 1 (TWAIN_PRESESSION).

public bool TwainOpenSource( 
   int HANDLE,
   string SourceName
)

public function TwainOpenSource( 
    HANDLE: Integer;
    SourceName: String
): Boolean; 

public function TwainOpenSource( 
   HANDLE : int,
   SourceName : String
) : boolean;

public: bool TwainOpenSource( 
   int HANDLE,
   string* SourceName
) 

public:
bool TwainOpenSource( 
   int HANDLE,
   String^ SourceName
) 

'Declaration
 
Public Overloads Function TwainOpenSource( _
   ByVal HANDLE As Integer, _
   ByVal SourceName As String _
) As Boolean