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New WINDEV, WEBDEV, WINDEV Mobile 24 feature!
  • Coordinates
  • How to retrieve the components of the color?
  • Drawing in PHP
  • Drawing in Browser code
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Stored procedures
Identifies the color of a pixel contained in an Image variable.
Example
MyImage is Image = "Test.gif"
// Identify the color of the pixel (15, 25)
// in the Image control named "IMG_Drawing"
ResColor = MyImage.PixelColor(15, 25)
IMG_MyDrawing = MyImage
Syntax
<Result> = <Image variable>.PixelColor(<X coordinate> , <Y coordinate>)
<Result>: Integer
Color of the specified pixel in RGB format. Caution: the value returned may differ according to the display configuration (resolution, ...)
<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

The coordinates are specified in pixels in relation to the top left corner of Image control (coordinates set to (0, 0)).
To retrieve the position of a mouse click in an Image control, use MouseXPos and MouseYPos.

How to retrieve the components of the color?

To retrieve the components of the color returned by <Image variable>.PixelColor:
  • To get the red component, use RGBRed (or perform a division modulo 256 of <Result>),
  • To get the green component, use RGBGreen (or perform a division modulo 256 of <Result>/256),
  • To get the blue component, use RGBBlue (or perform a division modulo 256 of <Result>/256/256).
Component : wd240obj.dll
Minimum required version
  • Version 24
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