Delphi檢測系統安裝的打印機

編寫一個Delphi打印程序，檢測系統中安裝的所有打印機，枚舉出這些打印機，代碼非常簡單，下面發給大家：

vIEw source print? 01 unit Unit1; 02 interface 03   04 uses 05   Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, 06   Dialogs, StdCtrls,Printers, XPMan; 07   08 type 09   TForm1 = class(TForm) 10     Button1: TButton; 11     GroupBox1: TGroupBox; 12     Memo1: TMemo; 13     Button2: TButton; 14     procedure Button1Click(Sender: TObject); 15     procedure Button2Click(Sender: TObject); 16   private 17     { Private declarations } 18   public 19     { Public declarations } 20   end; 21   22 var 23   Form1: TForm1; 24   25 implementation 26   27 {$R *.dfm} 28   29 procedure TForm1.Button1Click(Sender: TObject); 30 begin 31   Memo1.Clear; 32   memo1.Lines.Assign(Printer.Printers); 33   if trim(memo1.Text) = '' then 34   begin 35     showmessage('沒有安裝打印機！'); 36   end; 37 end; 38   39 procedure TForm1.Button2Click(Sender: TObject); 40 begin 41   Close; 42 end; 43   44 end.