GLUTwindow
GLUTwindow *parent; /* parent window */
GLUTwindow *children; /* list of children */
GLUTwindow *siblings; /* list of siblings */
GLUTwindow *prevWorkWin; /* link list of windows to work on */
GLUTwindow *window;
extern GLUTwindow *__glutWindowWorkList;
extern void (*__glutUpdateInputDeviceMaskFunc) (GLUTwindow *);
GLUTwindow * window, int x, int y, int x_win, int y_win);
extern GLUTwindow **__glutWindowList;
extern GLUTwindow *__glutCurrentWindow;
extern GLUTwindow *__glutMenuWindow;
extern GLUTwindow *__glutGameModeWindow;
GLUTwindow * window);
extern GLUTwindow *__glutToplevelOf(GLUTwindow * window);
extern void __glutSetCursor(GLUTwindow *window);
extern void __glutPutOnWorkList(GLUTwindow * window,
extern void __glutPostRedisplay(GLUTwindow * window, int layerMask);
GLUTwindow * window, int x, int y, int x_win, int y_win);
extern GLUTwindow *__glutGetWindow(Window win);
extern void __glutSetWindow(GLUTwindow * window);
extern GLUTwindow *__glutCreateWindow(
GLUTwindow * parent,
GLUTwindow * window,
GLUTwindow * initialWindow);
extern void __glutUpdateInputDeviceMask(GLUTwindow * window);