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DriveSpaceFree issue

 
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quatermass



Joined: 14 Dec 2005
Posts: 136
PostPosted: Fri Sep 19, 2008 10:39 am    Post subject: DriveSpaceFree issue Reply with quote
Some of us still have to use floppies and other storage devices that may have less than 1MB of free space on it.

The built-in function DriveSpaceFree rounds down to the nearest MB.

So a storage device like a floppy or a micro storage devices which my company uses may have 900K free on the device and therefore I can still use it.

Can DriveSpaceFree have an extra option added to it to make it not round down, but just return the exact amount?

Cheers. Smile
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Stuart Halliday
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Serenity



Joined: 07 Nov 2004
Posts: 1276
PostPosted: Fri Sep 19, 2008 11:57 am    Post subject: Reply with quote
You could use GetDiskFreeSpaceEx:

Code:
Msgbox % GetDiskFreeSpace("A:")
; DriveSpaceFree: 1, Explorer: 1.38 MB free, script: 1.389648 MB

GetDiskFreeSpace( lpDirectoryName )
{
   VarSetCapacity( lpFreeBytesAvailable,32 )
   
   DllCall("GetDiskFreeSpaceExA"
   , Str, lpDirectoryName, UInt, &lpFreeBytesAvailable, Uint,0, UInt,0 )
      
   Return % Numget( lpFreeBytesAvailable ) / ( 1024*1024 ) . " MB"
}

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quatermass



Joined: 14 Dec 2005
Posts: 136
PostPosted: Fri Sep 19, 2008 1:04 pm    Post subject: Reply with quote
Serenity wrote:
You could use GetDiskFreeSpaceEx:

Code:
Msgbox % GetDiskFreeSpace("A:")
; DriveSpaceFree: 1, Explorer: 1.38 MB free, script: 1.389648 MB

GetDiskFreeSpace( lpDirectoryName )
{
   VarSetCapacity( lpFreeBytesAvailable,32 )
   
   DllCall("GetDiskFreeSpaceExA"
   , Str, lpDirectoryName, UInt, &lpFreeBytesAvailable, Uint,0, UInt,0 )
      
   Return % Numget( lpFreeBytesAvailable ) / ( 1024*1024 ) . " MB"
}


Hmm nice solution Serenity.
I seem to be using 3rd party functions more and more these days instead of the built-in one. Very Happy

I wonder who and when decides if a function needs to be built-in or via a library? I guess in theory very few actually do?

Thanks again for this bit of code.


<added>
Actually I've tried this code now.

It returns the right value for my floppy drive A:
But using it on my D: hard drive which has 8.39GB free it says it has 405.464844 MB free.

I don't think that's right!
Laughing
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Stuart Halliday
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Serenity



Joined: 07 Nov 2004
Posts: 1276
PostPosted: Fri Sep 19, 2008 3:16 pm    Post subject: Reply with quote
This should work:

Code:
Msgbox % GetDiskFreeSpace("C:")

GetDiskFreeSpace( lpDirectoryName )
{
   VarSetCapacity( lpFreeBytesAvailable,32 )
   
   DllCall("GetDiskFreeSpaceExA"
   , Str, lpDirectoryName, UInt, &lpFreeBytesAvailable, Uint,0, UInt,0 )
         
   Size := Numget( lpFreeBytesAvailable, 0, "Int64" )
   Return Size < 1073741824 ? Size / 1048576 . " MB" : Size / 1073741824 . " GB"
}


quatermass wrote:
I wonder who and when decides if a function needs to be built-in or via a library? I guess in theory very few actually do?


You could ask for it in the Wish List forum.
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