'Declaration
 
Public Function SetAlphaChannel( _
   ByVal ImageID As Integer, _
   ByVal Alpha() As Byte, _
   ByVal SrcLeft As Integer, _
   ByVal SrcTop As Integer, _
   ByVal Width As Integer, _
   ByVal Height As Integer _
) As GdPictureStatus

public GdPictureStatus SetAlphaChannel( 
   int ImageID,
   byte[] Alpha,
   int SrcLeft,
   int SrcTop,
   int Width,
   int Height
)

public function SetAlphaChannel( 
    ImageID: Integer;
    Alpha: Bytearray of;
    SrcLeft: Integer;
    SrcTop: Integer;
    Width: Integer;
    Height: Integer
): GdPictureStatus; 

public function SetAlphaChannel( 
   ImageID : int,
   Alpha : byte[],
   SrcLeft : int,
   SrcTop : int,
   Width : int,
   Height : int
) : GdPictureStatus;

public: GdPictureStatus SetAlphaChannel( 
   int ImageID,
   byte[]* Alpha,
   int SrcLeft,
   int SrcTop,
   int Width,
   int Height
) 

public:
GdPictureStatus SetAlphaChannel( 
   int ImageID,
   array<byte>^ Alpha,
   int SrcLeft,
   int SrcTop,
   int Width,
   int Height
) 

Parameters

ImageID

GdPicture image identifier.

Alpha

The Alpha channel data.

SrcLeft

The left source pixel of the area.

SrcTop

The top source pixel of the area.

Width

The width of the area in pixel.

Height

The height of the area in pixel.

Return Value

This method requires the Image Documents component to run.

Reference

GdPictureImaging Class
GdPictureImaging Members
GetAlphaChannel Method