GetLastError获得错误信息

 

 

void ShowError(long nErrorCode)

{

LPVOID lpMsgBuf;

FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER | 

FORMAT_MESSAGE_FROM_SYSTEM | 

FORMAT_MESSAGE_IGNORE_INSERTS,

NULL,

nErrorCode,

MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language

(LPTSTR) &lpMsgBuf,

0,

NULL

);

wchar_t errorCode[20];

_itow_s(nErrorCode,errorCode,10);

 

MessageBox(NULL,(LPTSTR)lpMsgBuf,errorCode,0);

LocalFree(lpMsgBuf); // free the buffer.

}