calculate

XmSetColorCalculation(3X)												 XmSetColorCalculation(3X)

NAME

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

SYNOPSIS

       #include <Xm/Xm.h>

       XmColorProc XmSetColorCalculation (color_proc)
	       XmColorProc color_proc;

DESCRIPTION

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

       Specifies  the  procedure used to calculate default colors. The procedure is passed a pointer to an XColor structure representing the back-
       ground 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  cal-
       culated.  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.  Specifies the background color.  Specifies the foreground color  to  be  calculated.   Specifies  the
       select color to be calculated.  Specifies the top shadow color to be calculated.  Specifies the bottom shadow color to be calculated.

RETURN VALUE

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

SEE ALSO

       XmChangeColor(3X), XmGetColors(3X), XmGetColorCalculation(3X)

															 XmSetColorCalculation(3X)