PC SOFT

WINDEVWEBDEV AND WINDEV MOBILE
ONLINE HELP

Home | Sign in | English UK
  • Coordinates
  • How to retrieve the components of the color?
  • <Image>.PixelColor, Zoom and automatic scrollbars
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadApple WatchUniversal Windows 10 AppWindows Mobile
Others
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 the Image control 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)).
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).
Reports and QueriesWindows

<Image>.PixelColor, Zoom and automatic scrollbars

The option "Automatic scrollbars and zoom" available on an Image control is incompatible with <Image>.PixelColor. If this option is used on the Image control, <Image>.PixelColor freezes the image in the control. The zoom and the scrollbars are also frozen.
Component : wd250obj.dll
Minimum version required
  • Version 24
This page is also available for…
Comments
Click [Add] to post a comment