FormatMessage VC函数

void DisplayError(DWORD dwError)
{
LPVOID pv;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|
FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
dwError,
MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
(LPTSTR)&pv,
0,
NULL);
MessageBox(NULL, (LPTSTR)pv, "Error", MB_ICONHAND);
LocalFree(pv);
}