🚀 go-pugleaf

erik.rasmussen@leo.dk wrote:
: How do I write a C++ (MSVC++ v.5)  program that retrieves the unique
: ID-number (i.e. the 'Volume Serial Number' as shown by a 'DIR A:' 
: command) on a floppy disk?
: I prefer an MFC solution.
:  
: Kind regards 
: Gustav Sporon-Fiedler,
: LEO Pharmaceutical Products, Denmark
: e-mail: gustav.sporon-fiedler@leo.dk

A hack:

#include <stdio.h>
int main (int argc, char ** argv)
	{
	FILE * infile;
	char buf[128];

	sprintf (buf, "dir %s > delete.me\n", argv[1]);
	system (buf);
	if ((infile = fopen ("delete.me", "r")) == NULL)
		{
		printf ("oops\n");
		exit (0);
		}
	while (1)
		{
		if (fgets (buf, sizeof (buf), infile) != buf)
			{
			break;
			}
		if (strstr (buf, "Volume in drive") != NULL)
			{
			printf ("%s\n", buf);
			break;
			}
		}
	fclose (infile);
	unlink ("delete.me");
	}
--
---- Fred Smith -- fredex@fcshome.stoneham.ma.us -----------------------------
                      The eyes of the Lord are everywhere, 
                    keeping watch on the wicked and the good.
----------------------------- Proverbs 15:3 (niv) -----------------------------

Erik,

   Here is a Win32 console app that accepts the drive
letter as a parameter, and prints the volume ID as a
DWORD.

/***************************************************************************
*
   File:    GETVOL32.C
   Type:    Win32 Console Application
   Purpose: Reads volume serial number ID of a drive.

   COMPILED WITH MSVC 5.0 (CL v11.00.7022):

         CL /W3 /Oxb2 /ML /GX GETVOL32.C

****************************************************************************
/

#include <stdio.h>
#include <windows.h>

int GetVolumeID(char *pstr,DWORD *lpID)
/***************************************************************************
*
   Functional description:

   Determine volume ID of drive specified.

   Returns:
            0 on sucess (lpID will contain volume ID #)
            non-zero for error.

****************************************************************************
/
{
   int status=0;
   char volbuff[256],namebuff[256];
   DWORD dwSer;
   DWORD dwMaxFileLen;
   DWORD dwFileFlags;

   if (GetVolumeInformation( pstr,volbuff,sizeof(volbuff),
                                 &dwSer,
                                 &dwMaxFileLen,
                                 &dwFileFlags,
                                 namebuff,
                                 sizeof(namebuff)))
   {

      *lpID=dwSer;
   }
   else
   {
      status=GetLastError();
   }


   return status;

}

int main(int argc,char *argv[])
{
   DWORD dwSer;
   int status;
   char *pdrvstr=" :\\";

   if (argc < 2)
   {
      printf("Usage: %s drive:\n",argv[0]);
      printf("       Returns volume ID of specified drive.\n");
      return 1;
   }

   *pdrvstr=*argv[1];

   status=GetVolumeID(pdrvstr,&dwSer);

   if (status)
   {
      printf("Error %d\n",status);
   }
   else
   {
      printf("Volume Serial Number for %s is %lX\n",argv[1],dwSer);
   }

   return status;
}


Joe
jdhagen@itis.com

erik.rasmussen@leo.dk wrote in message ...
>How do I write a C++ (MSVC++ v.5)  program that retrieves the unique
>ID-number (i.e. the 'Volume Serial Number' as shown by a 'DIR A:'
>command) on a floppy disk?
>I prefer an MFC solution.
>
>Kind regards
>Gustav Sporon-Fiedler,
>LEO Pharmaceutical Products, Denmark
>e-mail: gustav.sporon-fiedler@leo.dk