You only need to set the color map if the drawable-creating function did not have a way to determine the colormap, and you then use drawable operations that require a colormap. The colormap for all drawables and graphics contexts you intend to use together should match. i.e. when using a #GdkGC to draw to a drawable, or copying one drawable to another, the colormaps should match.
Requirements
Namespace: Gdk Assembly: gdk-sharp (in gdk-sharp.dll)