XmSetColorCalculation(3X) — DG/UX R4.11MU05



XmSetColorCalculation(3X)     SDK X11 R4.11MU05    XmSetColorCalculation(3X)


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

SYNOPSIS
       #include <Xm/Xm.h>

       XmColorProc XmSetColorCalculation (color_proc)
            XmColorProccolor_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;


       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 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).


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