检查磁盘空间？

[lesnme]

如果知道当前磁盘的空间呢？

[bear_c]

剩余空间 DiskFree(0);
磁盘空间 DiskSize(0);

[taidy]

GetDiskFreeSpace()

[dreamfan]

//获得C盘可用空间
GetDiskFreeSpace('C:', LPDWORD(@sector)^, LPDWORD(@byte)^, LPDWORD(@free)^, LPDWORD(@cluster)^); //获得返回参数
totalspace := cluster * byte * sector div 1024 div 1024; //计算总容量
freespace := free * byte * sector div 1024 div 1024; //计算可用空间
Memo1.Lines.Add('C盘总空间(' + inttostr(integer(totalspace)) + 'MB)。');
Memo1.Lines.Add('C盘可用空间(' + inttostr(integer(freespace)) + 'MB)。');

[mingyeh]

要得到驱动器的容量和剩余容量，用下面的程序
var
driver:pchar;
sec1, byt1, cl1, cl2:longword;
begin
driver:='c:\';//要显示的驱动器名
GetDiskFreeSpace(driver, sec1, byt1, cl1, cl2);
cl1 := cl1 * sec1 * byt1;
cl2 := cl2 * sec1 * byt1;
Label1.Caption := '该驱动器总共容量' + Formatfloat('###,##0',cl2) + '字节';
Label2.Caption := '该驱动器可用容量' + Formatfloat('###,##0',cl1) + '字节';
end;



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获取大于２Ｇ的硬盘容量

function GetDiskFreeSpaceEx(lpDirectoryName: PAnsiChar;
var lpFreeBytesAvailableToCaller : Integer;
var lpTotalNumberOfBytes: Integer;
var lpTotalNumberOfFreeBytes: Integer) : bool;
stdcall;
external kernel32
name 'GetDiskFreeSpaceExA';


procedure GetDiskSizeAvail(TheDrive : PChar;
var TotalBytes : double;
var TotalFree : double);
var
AvailToCall : integer;
TheSize : integer;
FreeAvail : integer;
begin
GetDiskFreeSpaceEx(TheDrive,
AvailToCall,
TheSize,
FreeAvail);
{$IFOPT Q+}
{$DEFINE TURNOVERFLOWON}
{$Q-}
{$ENDIF}
if TheSize >= 0 then
TotalBytes := TheSize else
if TheSize = -1 then begin
TotalBytes := $7FFFFFFF;
TotalBytes := TotalBytes * 2;
TotalBytes := TotalBytes + 1;
end else
begin
TotalBytes := $7FFFFFFF;
TotalBytes := TotalBytes + abs($7FFFFFFF - TheSize);
end;

if AvailToCall >= 0 then
TotalFree := AvailToCall else
if AvailToCall = -1 then begin
TotalFree := $7FFFFFFF;
TotalFree := TotalFree * 2;
TotalFree := TotalFree + 1;
end else
begin
TotalFree := $7FFFFFFF;
TotalFree := TotalFree + abs($7FFFFFFF - AvailToCall);
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
TotalBytes : double;
TotalFree : double;
begin
GetDiskSizeAvail('C:\',
TotalBytes,
TotalFree);
ShowMessage(FloatToStr(TotalBytes));
ShowMessage(FloatToStr(TotalFree));
end;