C / C++ / MFC

bool DoEvents()
{
 MSG msg;
 while (::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
 {
  if (msg.message == WM_QUIT)
  {
   return false;
  }
  if (!AfxGetApp()->PreTranslateMessage(&msg))
  {
   ::TranslateMessage(&msg);
   ::DispatchMessage(&msg);
  }
 }
 return true;
}

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

 TCHAR lpVolumeNameBuffer[256];
 DWORD VolumeSerialNumber;
 DWORD MaximumComponentLength;
 DWORD FileSystemFlags;
 TCHAR lpFileSystemNameBuffer[256];

if ( GetVolumeInformation(
         _T("C:\\"),               // address of root directory of the file system
         lpVolumeNameBuffer,             // address of name of the volume
         255,                            // length of lpVolumeNameBuffer
         &VolumeSerialNumber,            // address of volume serial number
         &MaximumComponentLength,        // address of system's maximum filename length
         &FileSystemFlags,               // address of file system flags
         lpFileSystemNameBuffer,         // address of name of file system
         255                             // length of lpFileSystemNameBuffer
   ) )
     {
      return VolumeSerialNumber;
  }
 else
     return 0;