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XSolarisCheckColormapEquivalenceXLIB1FUNXSolarisCheckColormapEquivalence(3X11)

NAME
       XSolarisCheckColormapEquivalence	 -  determines if two visuals are col‐
       ormap equivalent

SYNTAX
       #include <X11/Xmu/XmuSolaris.h>

       Bool XSolarisCheckColormapEquivalence(display,  screen,	visual1,  vis‐
       ual2)
	     Display *display;
	     int screen;
	     Visual *visual1;
	     Visual *visual2;

ARGUMENTS
       display	 Specifies the connection to the X server.

       screen	 An  integer specifying the screen on which the visuals are to
		 be searched.

       visual1	 Specifies the first visual type supported on the screen.   If
		 the  visual  type  is not one supported by the screen, a Bad‐
		 Match error results.

       visual2	 Specifies the second visual type supported on the screen.  If
		 the  visual  type  is not one supported by the screen, a Bad‐
		 Match error results.

DESCRIPTION
       This function returns True if the two Visuals are Colormap  Equivalent,
       otherwise it returns False.

       Colormap	 Equivalence is a minor relaxation of the X protocol supported
       by the Solaris X server Xsun(1).	 Two Visuals are  Colormap  Equivalent
       if  it is possible to use a Colormap created with one of the Visuals as
       the Colormap of a Window in the other Visual. This is useful on a  sys‐
       tem  that  supports  Visuals  that  differ  only	 in their OpenGL (GLX)
       Attributes.

       For example, to avoid colormap flashing, when creating a window with  a
       Visual  that  is	 in  the same depth as the RootWindow, use the Default
       Colormap. In standard X, this is only possible if  the  Visual  is  the
       DefaultVisual. With Colormap Equivalence the requirement is relaxed.

       To use this function, an application should link with libXmu.

EXAMPLES
       You may be able to avoid creating a new colormap by using the following
       code:

		      if (!XSolarisCheckColormapEquivalence(dpy, screen,
					 vi->visual, DefaultVisual(dpy, screen)) {
			  attributes.colormap = XCreateColormap(dpy, root,
					      vi->visual, AllocNone);
			  valuemask = CWColormap;
		      }
		      window = XCreateWindow(dpy, root, 0, 0, 500, 500, 0,
				      vi->depth, CopyFromParent, vi->visual,
				      valuemask, &attributes);

SEE ALSO
       XCreateWindow(3), glXGetConfig(3gl).

X Version 11			   ReleaXSolarisCheckColormapEquivalence(3X11)

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