void InitGfxScrollbufferInfo(int, int);
void InitGfxClipRegion(boolean, int, int, int, int);
void InitGfxDrawBusyAnimFunction(void (*draw_busy_anim_function)(void));
void InitGfxScrollbufferInfo(int, int);
void InitGfxClipRegion(boolean, int, int, int, int);
void InitGfxDrawBusyAnimFunction(void (*draw_busy_anim_function)(void));