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Browse - Programming Tips - How can I turn a Windows error number into a string?

Date: 2014sep26
Platform: Win32
OS: Windows
Language: C/C++

Q.  How can I turn a Windows error number into a string?

A.  Error numbers from GetLastError() can be converted into strings
with this function.

void ErrorToString(const DWORD dwError, LPSTR szOut, const size_t size)
{
	FormatMessageA(
		FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
		NULL,
		dwError,
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // The user default language
		szOut,
		(DWORD)size,
		NULL);
}

// Example use

DWORD		dwError = GetLastError();
char		buf[1024];

ErrorToString(dwError, buf, sizeof(buf));

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