case XK_Num_Lock : special = GLUT_KEY_NUM_LOCK; break;
case XK_KP_Begin : special = GLUT_KEY_BEGIN; break;
case XK_KP_Delete: special = GLUT_KEY_DELETE; break;
+
+ case XK_Shift_L: special = GLUT_KEY_SHIFT_L; break;
+ case XK_Shift_R: special = GLUT_KEY_SHIFT_R; break;
+ case XK_Control_L: special = GLUT_KEY_CTRL_L; break;
+ case XK_Control_R: special = GLUT_KEY_CTRL_R; break;
+ case XK_Alt_L: special = GLUT_KEY_ALT_L; break;
+ case XK_Alt_R: special = GLUT_KEY_ALT_R; break;
}
/*