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MemoryManagement.cpp
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MemoryManagement.cpp
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#include "stdafx.h"
#include "MemoryManagement.h"
void SetLength(LPVOID* lppBuff, UINT nElementSize, UINT nCount)
{
HANDLE hHeap = ::GetProcessHeap();
LPVOID pBuff = *lppBuff;
if (nCount == 0)
{
::HeapFree(hHeap, 0, pBuff);
*lppBuff = NULL;
}
else
{
if (pBuff == NULL)
*lppBuff = ::HeapAlloc(hHeap, HEAP_ZERO_MEMORY, nElementSize * nCount);
else
*lppBuff = ::HeapReAlloc(hHeap, HEAP_ZERO_MEMORY, pBuff, nElementSize * nCount);
}
}
BOOL StrToWideStr(char *lpStr, wchar_t **lppWideStr)
{
int nBuffLen = strlen(lpStr);
if (nBuffLen)
{
nBuffLen += 1;
nBuffLen *= 2;
*lppWideStr = ::SysAllocStringByteLen(NULL, nBuffLen);
::MultiByteToWideChar(CP_ACP, 0, lpStr, -1, *lppWideStr, nBuffLen);
return TRUE;
}
else
return FALSE;
}
BOOL WideStrToStr(wchar_t *lpWideStr, char **lppStr)
{
*lppStr = NULL;
int nBuffLen = ::WideCharToMultiByte(CP_ACP, 0, lpWideStr, -1, *lppStr, 0, NULL, NULL);
if (nBuffLen > 0)
{
*lppStr = (char *)::GlobalAlloc(GPTR, nBuffLen);
::WideCharToMultiByte(CP_ACP, 0, lpWideStr, -1, *lppStr, 0, NULL, NULL);
return TRUE;
}
else
return FALSE;
}
void FreeWideStr(wchar_t **lppWideStr)
{
::SysFreeString(*lppWideStr);
*lppWideStr = NULL;
}