XmSetColorCalculation(library call) XmSetColorCalculation(library call)

NAME

XmSetColorCalculation -- A function to set the procedure used for
default color calculation

SYNOPSIS

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

DESCRIPTION

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.

RETURN

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

RELATED

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

XmSetColorCalculation(library call)