学步园

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

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。