Support querying of number of visuals without reporting an error or

crashing.

Support querying of number of visuals without reporting an error or
236893c6 · Lionel Ulmer · Alexandre Julliard · 9d9cf72a · 236893c6
Commit 236893c6 authored May 24, 2002 by Lionel Ulmer Committed by Alexandre Julliard May 24, 2002
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opengl.c graphics/x11drv/opengl.c +5 -0

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--- a/graphics/x11drv/opengl.c
+++ b/graphics/x11drv/opengl.c
@@ -176,6 +176,11 @@ int X11DRV_DescribePixelFormat(X11DRV_PDEVICE *physDev,
  int rb,gb,bb,ab;
  
  TRACE("(%p,%d,%d,%p)\n", physDev, iPixelFormat, nBytes, ppfd);
+
+  if (ppfd == NULL) {
+    /* The application is only querying the number of visuals */
+    return MAX_PIXELFORMATS;
+  }
  
  if (nBytes < sizeof(PIXELFORMATDESCRIPTOR)) {
    ERR("Wrong structure size !\n");