RGtk2 (version 2.12.17)

gdkColormapQueryColor: gdkColormapQueryColor

Description

Locates the RGB color in colormap corresponding to the given hardware pixel pixel. pixel must be a valid pixel in the colormap; it's a programmer error to call this function with a pixel which is not in the colormap. Hardware pixels are normally obtained from gdkColormapAllocColors, or from a GdkImage. (A GdkImage contains image data in hardware format, a GdkPixbuf contains image data in a canonical 24-bit RGB format.)

Usage

gdkColormapQueryColor(object, pixel)

Arguments

object

[GdkColormap] a GdkColormap

pixel

[numeric] pixel value in hardware display format

Value

• A list containing the following elements:
• result
  [GdkColor] GdkColor with red, green, blue fields initialized

Details

This function is rarely useful; it's used for example to implement the eyedropper feature in GtkColorSelection.