gdk:visual-bits-per-rgb (visual)

visual -- a gdk:visual object

The integer with the number of significant bits per color value for visual.

Returns the number of significant bits per red, green and blue value. The gdk:visual-bits-per-rgb function has been deprecated since version 3.22 and should not be used in newly written code. Use the gdk:visual-red-pixel-details function and its variants to learn about the pixel layout of TrueColor and DirectColor visuals.