Bool ( *qglXQueryExtension )( Display *dpy, int *errorb, int *event );
void* ( *qglXGetProcAddressARB )( const GLubyte * procName );
typedef void* ( *glXGetProcAddressARBProc )( const GLubyte *procName );
Bool ( *qglXQueryExtension )( Display *dpy, int *errorb, int *event );
void* ( *qglXGetProcAddressARB )( const GLubyte * procName );
typedef void* ( *glXGetProcAddressARBProc )( const GLubyte *procName );