• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 452
  • Last Modified:

Hard disk space

hi,
please advise if there's any Win32 API which allows the programmer to check the hard disk space utilised/free in the codes.

thanks,
andrea
0
tanmh
Asked:
tanmh
  • 7
  • 2
1 Solution
 
cyrilbdtCommented:
GetDiskFreeSpaceEx
0
 
tanmhAuthor Commented:
hi,
can u pls provide an example of how to call this func to get
the free disk space?

thanks.
0
 
tanmhAuthor Commented:
although the API is correct but after asking for an
example for so long, there was no answer.

other experts, would appreciate it if you can help. Basically, I don't know how to pass the parameters for the API, what's PULARGE_INTEGER?

BOOL GetDiskFreeSpaceEx(
  LPCTSTR lpDirectoryName,                
  PULARGE_INTEGER lpFreeBytesAvailableToCaller,                                                
  PULARGE_INTEGER lpTotalNumberOfBytes,    
  PULARGE_INTEGER lpTotalNumberOfFreeBytes );
0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 
AlexVirochovskyCommented:
That is example of GetDiskFreeSpace:

  DWORD  lpSectorsPerCluster;      // address of sectors per cluster
  DWORD  lpBytesPerSector;      // address of bytes per sector
  DWORD  lpNumberOfFreeClusters;      // address of number of free clusters
  DWORD  lpTotalNumberOfClusters;       // address of total number of clusters
  GetDiskFreeSpace("C:\\",

    &lpSectorsPerCluster,      // address of sectors per cluster
    &lpBytesPerSector,      // address of bytes per sector
    &lpNumberOfFreeClusters,      // address of number of free clusters
    &lpTotalNumberOfClusters       // address of total number of clusters
   );
  DWORD lFree = lpNumberOfFreeClusters * lpSectorsPerCluster *
   lpBytesPerSector;
Regrds, Alex
0
 
tanmhAuthor Commented:
hi Alex,
thanks for your example.
Do u have the sample for GetDiskFreeSpaceEx instead?
or do I have to use GetDiskFreeSpace and then calculate the free disk space myself?

thanks,
Andrea
0
 
tanmhAuthor Commented:
hi Alex,

I've tried out your sample code and I got the following error:

C:\ESPdev\bin\trydatetime\main.cpp(133) : error C2664: 'GetDiskFreeSpaceW' : cannot convert parameter 1 from 'char [4]' to 'const unsigned short *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

Please advise.

Thanks, Andrea
0
 
tanmhAuthor Commented:
again after so long, no response.

would appreciate if any expert can followup and provide me with a solution.

thanks,
andrea
0
 
AlexVirochovskyCommented:
tanmh! First reply to you  question is right(for NT)
My reply to you question is right (for Win95/31)
I post you more variant(but it makes same thing)!
If it is no work(or tanslate), you have problems
with translator!

//it is windows console apps.
#include <windows.h>
#include <iostream.h>
#include <dos.h>

void main(void)
{
  DWORD  lpSectorsPerCluster;      // address of sectors per cluster
  DWORD  lpBytesPerSector;      // address of bytes per sector
  DWORD  lpNumberOfFreeClusters;      // address of number of free clusters
  DWORD  lpTotalNumberOfClusters;       // address of total number of clusters
  GetDiskFreeSpace("C:\\",

    &lpSectorsPerCluster,      // address of sectors per cluster
    &lpBytesPerSector,      // address of bytes per sector
    &lpNumberOfFreeClusters,      // address of number of free clusters
    &lpTotalNumberOfClusters       // address of total number of clusters
   );
  long lFree = lpNumberOfFreeClusters * lpSectorsPerCluster *
                lpBytesPerSector;
  cout << lFree << endl;
//2-nd variant: _dos_getdiskfree function
   struct diskfree_t d;
   _dos_getdiskfree(3,&d);
   lFree = d.avail_clusters *     d.sectors_per_cluster*d.bytes_per_sector;
  cout << lFree << endl;
Best regards, Alex
}
0
 
tanmhAuthor Commented:
hi Alex,
Thanks for your help.
I've tried out on my VC++ v6.0 compiler.
For the 1st variant
-------------------
error C2664: 'GetDiskFreeSpaceW' : cannot convert parameter 1 from 'char [4]' to 'const unsigned short *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

For the 2nd variant
-------------------
the compiler complained that _dos_getdiskfree(3,&d) is undeclared identifier even though i included <dos.h>

Just to check with you, for variant 1, did u set your compiler options?

Regards,
Andrea
0
 
tanmhAuthor Commented:
I've solved my problem already.
thanks.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

  • 7
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now