region.h

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

#ifndef __WIN32K_REGION_H
#define __WIN32K_REGION_H

#include "gdiobj.h"

/* Internal region data. Can't use RGNDATA structure because buffer is allocated statically */
typedef struct _ROSRGNDATA {
  RGNDATAHEADER rdh;
  PRECT         Buffer;
} ROSRGNDATA, *PROSRGNDATA, *LPROSRGNDATA;


#define  RGNDATA_FreeRgn(hRgn)  GDIOBJ_FreeObj(GdiHandleTable, (HGDIOBJ)hRgn, GDI_OBJECT_TYPE_REGION)
#define  RGNDATA_LockRgn(hRgn) ((PROSRGNDATA)GDIOBJ_LockObj(GdiHandleTable, (HGDIOBJ)hRgn, GDI_OBJECT_TYPE_REGION))
#define  RGNDATA_UnlockRgn(pRgn) GDIOBJ_UnlockObjByPtr(GdiHandleTable, pRgn)
HRGN FASTCALL RGNDATA_AllocRgn(INT n);
BOOL INTERNAL_CALL RGNDATA_Cleanup(PVOID ObjectBody);

#endif