XmSetColorCalculation man page on Ultrix

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XmSetColorCalculation(3X)	   OSF/Motif	     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,	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.  Specifies the procedure to use for color calcula‐
       tion.

       Following is a description of the XmColorProc type used by  XmSetColor‐
       Calculation:

       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	proce‐
       dure  is passed a pointer to an XColor structure representing the back‐
       ground color.  The pixel, red, green, and blue members of  this	struc‐
       ture 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	calcu‐
       lated.	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.	Speci‐
       fies 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.

RELATED INFORMATION
       XmChangeColor(3X), XmGetColors(3X), and XmGetColorCalculation(3X).

						     XmSetColorCalculation(3X)
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