Open
Description
FormatMessageA
string get_sys_error_msg(unsigned long err)
{
char _inner_msg[10240] = { 0 };
memset(_inner_msg, 0, sizeof(_inner_msg));
if (err == 0)
err = GetLastError();
LPSTR buf = NULL;
if (::FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
(LPSTR)&buf,
0,
NULL))
{
sprintf_s(_inner_msg, sizeof(_inner_msg),"[%d]%s", err, buf);
::LocalFree(buf);
}
else
{
snprintf(_inner_msg, sizeof(_inner_msg), " [0x%x]Unknown error", err);
}
string str_error_msg(_inner_msg);
return str_error_msg;
}blog link FormatMessageA