/*** GLX_SGIX_pbuffer ***/
GLXPbufferSGIX (*CreateGLXPbufferSGIX)(Display *, GLXFBConfigSGIX, unsigned int, unsigned int, int *);
void (*DestroyGLXPbufferSGIX)(Display *, GLXPbufferSGIX);
- int (*QueryGLXPbufferSGIX)(Display *, GLXPbufferSGIX, int, unsigned int *);
+ void (*QueryGLXPbufferSGIX)(Display *, GLXPbufferSGIX, int, unsigned int *);
void (*SelectEventSGIX)(Display *, GLXDrawable, unsigned long);
void (*GetSelectedEventSGIX)(Display *, GLXDrawable, unsigned long *);