GLUT_TABLETBUTTON_CALLBACK 1254 php_opengl/glut/php_glut.c call_user_callback(call_backs,GLUT_TABLETBUTTON_CALLBACK,4,params); GLUT_TABLETBUTTON_CALLBACK 1263 php_opengl/glut/php_glut.c HASH_CALLBACK(callback, 1, GLUT_TABLETBUTTON_CALLBACK);