本文以实例说明Delphi打印程序的实现方法。该实例可以检测系统中安装的所有打印机，枚举出这些打印机，主要功能代码非常简单，便于大家阅读与理解。
主要功能代码如下：
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls,Printers, XPMan; type TForm1 = class(TForm) Button1: TButton; GroupBox1: TGroupBox; Memo1: TMemo; Button2: TButton; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin Memo1.Clear; memo1.Lines.Assign(Printer.Printers); if trim(memo1.Text) = '' then begin showmessage('没有安装打印机！'); end; end; procedure TForm1.Button2Click(Sender: TObject); begin Close; end; end.
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