Retrieving the Last-Error Code

When a function in the Win32 API fails, it sets the last-error code. If your application needs more details about an error, it can retrieve the last-error code.

The following example shows an error-handling function.

• oid error(LPSTR lpszFunction)

{

CHAR szBuf[80];

DWORD dw = GetLastError();

sprintf(szBuf, "%s failed: GetLastError returned %u\n",

lpszFunction, dw);

MessageBox(NULL, szBuf, "ERROR", MB_OK);

ExitProcess(dw);

}

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