XmSetColorCalculation - Man Page

#include <Xm/Xm​.h>
XmColorProc XmSetColorCalculation(
XmColorProc color_proc);

XmSetColorCalculation sets the procedure to calculate default colors​. This procedure is used to calculate the foreground, top shadow, bottom shadow, and select colors on the basis of a given background color​. If called with an argument of NULL, it restores the default procedure used to calculate colors​.

color_proc

Specifies the procedure to use for color calculation​.

Following is a description of the XmColorProc type used by XmSetColorCalculation:

void (*color_proc) (background_color, foreground_color, select_color, top_shadow_color,
bottom_shadow_color)
        XColor  *background_color;
        XColor  *foreground_color;
        XColor  *select_color;
        XColor  *top_shadow_color;
        XColor  *bottom_shadow_color;
(void)

Specifies the procedure used to calculate default colors​. The procedure is passed a pointer to an XColor structure representing the background color​. The pixel, red, green, and blue members of this structure are filled in with values that are valid for the current colormap​.

The procedure is passed pointers to XColor structures representing the foreground, select, top shadow, and bottom shadow colors to be calculated​. The procedure calculates and fills in the red, green, and blue members of these structures​. The procedure should not allocate color cells for any of these colors​.

background_color

Specifies the background color​.

foreground_color

Specifies the foreground color to be calculated​.

select_color

Specifies the select color to be calculated​.

top_shadow_color

Specifies the top shadow color to be calculated​.

bottom_shadow_color

Specifies the bottom shadow color to be calculated​.

Returns the color calculation procedure that was used at the time this routine was called​.

XmChangeColor(3), XmGetColors(3), and XmGetColorCalculation(3)​.

XmChangeColor(3), XmGetColorCalculation(3), XmGetColors(3).