Leadtools Namespace > RasterImage Class : SetPixel Method |
'Declaration Public Sub SetPixel( _ ByVal row As Integer, _ ByVal column As Integer, _ ByVal color As RasterColor _ )
'Usage Dim instance As RasterImage Dim row As Integer Dim column As Integer Dim color As RasterColor instance.SetPixel(row, column, color)
This method uses image coordinates to specify the pixel. Therefore, you must account for the view perspective of the image. If you specify a pixel that is outside the image or outside the region (if the image has one), this method throws an exception.
Use the GetPixel method to get the color value of a certain pixel.
For 32 and 64-bit images, an alpha value is also available in the image. This method will use the alpha value in color (A). For 32-bit images, this will be the exact byte value of the alpha for the pixel. For 64-bit images, the alpha is 16-bit and since RasterColor.A is an 8-bit value, the alpha is normalized from its 16-bit value to 8-bit. For other bits/pixel values, the method is identical to returned from SetPixelColor.
This method does not support signed images.
For more information, refer to Introduction to Image Processing With LEADTOOLS.
For more information refer to Accounting for View Perspective.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2