A set of values that describe the manner in which the pixel values for a visual are converted into RGB values for display.
|0||Gdk::VISUAL_STATIC_GRAY||Each pixel value indexes a grayscale value directly.|
|1||Gdk::VISUAL_GRAYSCALE||Each pixel is an index into a color map that maps pixel values into grayscale values. The color map can be changed by an application.|
|2||Gdk::VISUAL_STATIC_COLOR||Each pixel value is an index into a predefined, unmodifiable color map that maps pixel values into RGB values.|
|3||Gdk::VISUAL_PSEUDO_COLOR||Each pixel is an index into a color map that maps pixel values into rgb values. The color map can be changed by an application.|
|4||Gdk::VISUAL_TRUE_COLOR||Each pixel value directly contains red, green, and blue components. The red_mask, green_mask, and blue_mask fields of the visual structure describe how the components are assembled into a pixel value.|
|5||Gdk::VISUAL_DIRECT_COLOR||Each pixel value contains red, green, and blue components as for Gdk::TRUE_COLOR, but the components are mapped via a color table into the final output table instead of being converted directly.|