Checking GetLastError() from C
Posted: Sun Feb 06, 2022 8:42 am
Sometimes we have the need to check the value that returns Windows GetLastError(), so this code is required:
I post it here so it is usefull for all and I can find it next time
Code: Select all | Expand
void ShowErrorTxt( DWORD dwError )
{
LPVOID lpMsgBuf;
char buffer[ 6 ];
FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
dwError,
MAKELANGID( LANG_NEUTRAL, SUBLANG_DEFAULT ), // Default language
( LPTSTR ) &lpMsgBuf,
0,
NULL );
sprintf_s( buffer, "%i", dwError );
MessageBox( 0, ( char * ) lpMsgBuf, buffer, 0 );
LocalFree( lpMsgBuf );
}I post it here so it is usefull for all and I can find it next time