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Drive Sizes: GetDiskFreeSpaceEx() [Problem]

Posted on 2003-02-19
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Last Modified: 2010-04-04
I am having a problem using the WinAPI function:
GetDiskFreeSpaceEx()

Here is my code:
GetDiskFreeSpaceEx(PCHAR('C'), nil, nil, drvAvail);

It keeps giving me the error:
[Error] Types of actual and formal var parameters must be identical.
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Question by:Krakken
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2 Comments
 
LVL 34

Accepted Solution

by:
Slick812 earned 200 total points
ID: 7984776
hello krakken, You can not use a nil for a LongLong (Int64). you might try something like this -


type
TdriveSize = record
    FreeS:Int64;
    TotalS:Int64;
end;


function DiskSpace(Drive: String): TdriveSize;
var
  TSpace,TotalS: Int64;
  Sizes:TdriveSize;
  ErrorMode: Word;
begin
Delete(Drive, 4, 600);
ErrorMode := SetErrorMode(SEM_FailCriticalErrors);
if GetDiskFreeSpaceEx(@Drive[1], TSpace, TotalS, nil) then
begin
Sizes.FreeS :=  TSpace;
Sizes.TotalS := TotalS;
Result := Sizes;
end else
begin
Sizes.FreeS := -1;
Sizes.TotalS := -1;
Result := Sizes;
end;
SetErrorMode(ErrorMode);
end;
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Author Comment

by:Krakken
ID: 7984812
Thanks very much :)
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