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New WINDEV, WEBDEV 25 feature!
  • Coordinates
  • Drawing in an image with opacity
  • Drawing in PHP
  • Drawing in Browser code
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
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WINDEV Mobile
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Stored procedures
Identifies the opacity of a pixel in an image (in an picLayer variable) that manages the Alpha layer.
Versions 15 and later
WINDEV This function is now available for Java applications.
New in version 15
WINDEV This function is now available for Java applications.
WINDEV This function is now available for Java applications.
Versions 16 and later
WINDEV This function is now available for WINDEV applications in Linux.
New in version 16
WINDEV This function is now available for WINDEV applications in Linux.
WINDEV This function is now available for WINDEV applications in Linux.
Example
MyWDPicImage is WDPic = "Test.gif"
MyLayer is picLayer
// Identify the opacity of the pixel (15, 25)
// on the layer
ResOpacity = MyLayer.PixelOpacity(15, 25)
IMG_MyDrawing = MyWDPicImage
Syntax
<Result> = <picLayer image>.PixelOpacity(<X coordinate> , <Y coordinate>)
<Result>: Integer
Opacity of specified pixel (included between 0 for transparent and 255 for opaque).
<picLayer image>: picLayer variable
Name of picLayer 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 <picLayer variable>.StartDrawing and the dWithOpacity constant.
Component : wd250obj.dll
Minimum version required
  • Version 25
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