DOKK / manpages / debian 11 / libmotif-dev / XmChangeColor.3.en
XmChangeColor(3) Library Functions Manual XmChangeColor(3)

XmChangeColor — Recalculates all associated colors of a widget "XmChangeColor" "Color functions" "XmChangeColor"

#include <Xm/Xm.h>
void XmChangeColor(
Widget widget,
Pixel background);

XmChangeColor handles all color modifications for the specified widget when a new background pixel value is specified. This function recalculates the foreground, select, and shadow colors based on the new background color and sets the corresponding resources for the widget. If a color calculation procedure has been set by a call to XmSetColorCalculation, XmChangeColor uses that procedure to calculate the new colors. Otherwise, the routine uses a default procedure.

Specifies the widget ID whose colors will be updated
Specifies the background color pixel value

XmGetColorCalculation(3), XmGetColors(3), and XmSetColorCalculation(3).