wchar_t和char之间的转换

wchar_t* CtestSettingDlg::CharToWchar(const char* pchSrc){wchar_t* pwchDest = NULL;if (pchSrc != NULL){int npchLen = strlen(pchSrc);int nwLen = MultiByteToWideChar(CP_ACP, 0, pchSrc, npchLen, NULL, 0);if (nwLen > 0){pwchDest = new wchar_t[nwLen + 1];if (NULL != pwchDest){MultiByteToWideChar(CP_ACP, 0, pchSrc, npchLen + 1, pwchDest, nwLen + 1);pwchDest[nwLen] = 0;}}}return pwchDest;}char* CtestSettingDlg::WcharToChar(const wchar_t* pwchSrc){char* pchDest = NULL;if (pwchSrc != NULL){int nLen = wcslen(pwchSrc);int nRealLen = ::WideCharToMultiByte(CP_ACP, 0, pwchSrc, nLen, 0, 0, 0, 0);if (nRealLen > 0){pchDest = new char[nRealLen + 1];if (NULL != pchDest){WideCharToMultiByte(CP_ACP, 0, pwchSrc, nLen, pchDest, nRealLen + 1 , NULL, NULL);pchDest[nRealLen] = '/0';}}}return pchDest;}

挺简单的，一看就能明白了。虽然违反了“谁申请谁释放”的内存管理原则，但是减少了一次内存copy操作，具体利弊，请自行权衡。