+
+ /* look for good enough visual */
+ vinfo_template.screen = screen;
+ vinfo_template.class = (depth == 8 ? PseudoColor : TrueColor);
+ vinfo_template.depth = depth;
+ if ((vinfo = XGetVisualInfo(display, VisualScreenMask | VisualClassMask |
+ VisualDepthMask, &vinfo_template, &num_visuals)))
+ {
+ visual = vinfo->visual;
+ XFree((void *)vinfo);
+ }
+
+ /* got appropriate visual? */
+ if (depth < 8)
+ {
+ printf("Sorry, displays with less than 8 bits per pixel not supported.\n");
+ exit(-1);
+ }
+ else if ((depth ==8 && visual->class != PseudoColor) ||
+ (depth > 8 && visual->class != TrueColor &&
+ visual->class != DirectColor))
+ {
+ printf("Sorry, cannot get appropriate visual.\n");
+ exit(-1);
+ }