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Stored procedures
Identifies the opacity of a pixel of an image (present in an Variable of Image type) managing the Alpha layer.
Versions 16 and later
Linux This function is now available for WINDEV applications in Linux.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
New in version 16
Linux This function is now available for WINDEV applications in Linux.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
Linux This function is now available for WINDEV applications in Linux.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
Example
MyImage is Image = "Test.gif"
// Identify the opacity of the pixel (15, 25)
// on the Image variable
ResOpacity = MyImage.PixelOpacity(15, 25)
IMG_MyDrawing = MyImage
Syntax
<Result> = <Image variable>.PixelOpacity(<X coordinate> , <Y coordinate>)
<Result>: Integer
Opacity of specified pixel (included between 0 for transparent and 255 for opaque).
<Image variable>: Image variable
Name of Image variable to use.
<X coordinate>: Integer
Horizontal position of pixel to use.
<Y coordinate>: Integer
Vertical position of pixel to use.
Remarks

Coordinates

Coordinates are given in pixels with respect to the top left corner of the image (coordinates: (0.0)).

Drawing in an image with opacity

To specify that the drawing in the image supports opacity (Alpha layer), use <Image variable>.StartDrawing and the dWithOpacity constant.
Component: wd260obj.dll
Minimum version required
  • Version 24
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