Support undo for insert key frame/rm keyframe. We will refresh all layers and scenes since it is not feasible to collect these changes and update the layers and scenes. We may scan two level only in the future to improve the performance.

// -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
// vim: sw=4:ts=8:sts=4
#ifndef __X_SUPP_H_
#define __X_SUPP_H_

#include <X11/Xlib.h>

typedef Window MB_WINDOW;
typedef Display *MB_DISPLAY;

#endif