Colormaps and Colors

## Colormaps and Colors Colormaps and Colors — Manipulation of colors and colormaps |

## Includes

    #include <gdk/gdk.h>

## Description

These functions are used to modify colormaps. A colormap is an object that contains the mapping between the color values stored in memory and the RGB values that are used to display color values. In general, colormaps only contain significant information for pseudo-color visuals, but even for other visual types, a colormap object is required in some circumstances.

There are a couple of special colormaps that can be retrieved. The system colormap (retrieved with `gdk_colormap_get_system()`) is the default colormap of the system. If you are using GdkRGB, there is another colormap that is important - the colormap in which GdkRGB works, retrieved with `gdk_rgb_get_colormap()`. However, when using GdkRGB, it is not generally necessary to allocate colors directly.

In previous revisions of this interface, a number of functions that take a GdkColormap parameter were replaced with functions whose names began with "gdk_colormap_". This process will probably be extended somewhat in the future - `gdk_color_white()`, `gdk_color_black()`, and `gdk_color_change()` will probably become aliases.

## Functions

## Types and Values