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New WINDEV, WEBDEV, WINDEV Mobile 24 feature!
  • Coordinates
  • How to retrieve the components of the color?
  • <Image>.PixelColor, Zoom and automatic scrollbars
  • Drawing in PHP
  • Drawing in Browser code
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Stored procedures
Identifies the color of a pixel in an Image control.
Example
// Identify the color of the pixel (15, 25)
// in the Image control named "IMG_Drawing"
ResColor = IMG_Drawing.PixelColor(15, 25)
Syntax
<Result> = <Image control>.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 control>: Control name
Name of Image control 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>.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).
WINDEVReports and QueriesWindowsUser code (UMC)

<Image>.PixelColor, Zoom and automatic scrollbars

The option "Zoom and automatic scrollbars" available for an Image control is not compatible with <Image>.PixelColor. If this option is used on the Image control, the display performed by <Image>.PixelColor is fixed in the control. The zoom and the scrollbars are also fixed.
Component : wd240obj.dll
Minimum version required
  • Version 24
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