Unicode const char*转化为LPCTSTR

const char* strEn="中国";
//将const char*转化为LPCTSTR
int length = sizeof(TCHAR)*(strlen(strEn) + 1);
LPTSTR tcBuffer = new TCHAR[length];
memset(tcBuffer, 0, length);
MultiByteToWideChar(CP_ACP, 0, strEn, strlen(strEn), tcBuffer, length);
LPCTSTR  pDest = (LPCTSTR)tcBuffer;