gdkColormapQueryColor {RGtk2} | R Documentation

## 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`` | a `GdkColormap`
``pixel`` | pixel value in hardware display format

### Details

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

### Value

A list containing the following elements:

``result`` | `GdkColor` with red, green, blue fields initialized

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.40 Index]