Source code of Windows XP (NT5)
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/*
gmem.h
This module supplies macros for fixed global memory allocation compatible with those used in the Multimedia extensions to Windows 3.x. It is included to simplify porting of the Windows 3.x 16 bit code.
Jul-16-91 NigelT
*/
#ifndef _GMEMMACROS_
#define _GMEMMACROS_
#define GAllocPtr(ul) GlobalAlloc(GPTR,(ul))
#define GAllocPtrF(f,ul) GlobalAlloc(GPTR,(ul))
#define GReAllocPtr(lp,ul) GlobalReAlloc((HANDLE)(lp),(ul),GPTR)
#define GFreePtr(lp) GlobalFree((HANDLE)(lp))
#define GlobalAllocPtrF(f,ul) GlobalAlloc(GPTR,(ul))
//#define GlobalReAllocPtr(lp,ul,f) GlobalReAlloc((HANDLE)(lp),(ul),GPTR)
#define GlobalPtrHandle(h) (GlobalHandle(h))
/* the following are extracts from 3.1 WindowsX.h */#define GlobalUnlockPtr(lp) \
GlobalUnlock(GlobalPtrHandle(lp))
#define GlobalAllocPtr(flags, cb) \
(GlobalLock(GlobalAlloc((flags), (cb))))
#define GlobalReAllocPtr(lp, cbNew, flags) \
(GlobalUnlockPtr(lp), GlobalLock(GlobalReAlloc(GlobalPtrHandle(lp) , (cbNew), (flags))))
#define GlobalFreePtr(lp) \
(GlobalUnlockPtr(lp), (BOOL)GlobalFree(GlobalPtrHandle(lp)))
#endif // _GMEMMACROS_
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