为什么无法使用GlobalFreePtr()/GlobalAllocPtr()函数?在线等

[kittledt]

照着书上例子写的程序,用到这两个函数,但是编译的时候显示

'GlobalFreePtr' : undeclared identifier

我查了msdn2001 oct版,也没有这两个函数的介绍.
我的visual studio 6.0没有打补丁,是不是要打补丁啊,或者是那个库文件没有include?

请高手指教,谢谢

[jerry]

没这个函数

[布学无数]

这应该是两个宏，原型大概是这样(我没见过这两个宏)：
#define GlobalAllocPtr(size) GlobalAlloc(GPTR,size)
#define GlobalFreePtr(ptr) GlobalFree((HGLOBAL)ptr)

[吹泡泡的小猫]

GlobalFreePtr不是windows的API，可能是书的作者封装的函数，仔细看看原书

[fanqing]

加上WINDOWSX.H 试试
GlobalAllocPtr is a macro defined in WINDOWSX.H that allocates the memory, locks the handle, and returns a pointer to the allocated memory. To free the memory, use GlobalFreePtr. There is no need to retain memory handles or lock and unlock memory blocks.

What makes this possible is the GlobalHandle function, which takes a pointer and returns the handle to it. GlobalHandle removes the need for saving and tracking handles, resulting in incredible savings in time, memory, and complexity.

Other convenient memory macros in WINDOWSX.H are:

GlobalPtrHandle
GlobalLockPtr
GlobalUnlockPtr
GlobalReAllocPtr
If these macros were C functions, they would be prototyped as follows:

void FAR * GlobalAllocPtr(UINT flags, DWORD size) ;
// Allocates and locks a block of size bytes with the
// flags set.

BOOL GlobalFreePtr(void FAR* lp) ;
// Unlocks and frees the block pointer by lp;
// returns a non-zero on success.

void FAR * GlobalReAllocPtr(void FAR* lp, DWORD size, UINT flags) ;
// Reallocates the block pointed to by lp to size bytes with
// the flags set.
// The return value is the pointer to the reallocated block.

HGLOBAL GlobalPtrHandle(void FAR* lp) ;
// Gets global handle pointed to by lp from FAR pointer.

BOOL GlobalLockPtr(void FAR* lp) ;
// Locks the block lp points to.
// If successful, returns a non-zero value.

BOOL GlobalUnlockPtr(void FAR* lp) ;
// Unlocks the block lp points to.
// If successful, returns a non-zero value.

For the curious, here are the definitions of GlobalAllocPtr and GlobalFreePtr:

#define GlobalAllocPtr(flags, cb) \
(GlobalLock(GlobalAlloc((flags), (cb))))

#define GlobalFreePtr(lp) \
(GlobalUnlockPtr(lp),(BOOL)GlobalFree(GlobalPtrHandle(lp)))

[kittledt]

感谢楼上各位仁兄的回复,特别是fanqing(火影忍者+28%(准备学习进程/线程))

按照你的方法,问题已经解决

[fanqing]

既然解决了怎么那么多天了,还不结帐啊?????

[xiaoyilong19]

楼上大哥没看清楚本来就是0分，结不结看不出来