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;
interfaceuses 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.
