Delphi实现获取磁盘空间大小的方法

unit Unit1;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm1 = class(TForm)  Edit1: TEdit;  Button1: TButton;  Label1: TLabel;  Label2: TLabel;  procedure Button1Click(Sender: TObject); private  { Private declarations } public  { Public declarations } end;var Form1: TForm1;implementation{$R *.DFM}procedure TForm1.Button1Click(Sender: TObject);var driver:pchar; sec1, byt1, cl1, cl2:longword;begin driver:=pchar(edit1.text);//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;end.