48. FAQ o Win API

Q> How to check up, whether there is a diskette in the disk drive? 

A> 

BOOL IsDiskInDrive (LPTSTR lpszDrive) 
{ 
   UINT errmode; 
   TCHAR szVolName [256]; 
   DWORD dwMaxComSize; 
   DWORD dwFlags; 
   TCHAR szFS [256]; 
   BOOL bRes; 

   errmode = SetErrorMode (SEM_FAILCRITICALERRORS); 
//if not to make SetErrorMode - the standard window "Drive Not Ready" jumps out 

   bRes = GetVolumeInformation (lpszDrive, 
                                 szVolName, 
                                 sizeof (szVolName), 
                                 NULL, &dwMaxComSize, 
                                 &dwFlags, 
                                 szFS, sizeof (szFS)); 
   SetErrorMode (errmode); 
   return bRes; 
}

This technology also works with CDROM and other replaceable devices.