unit2.pas

Delphi 源码,关于打印方面的一个小程序

unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    Button2: TButton;
    PrintDialog1: TPrintDialog;
    PrinterSetupDialog1: TPrinterSetupDialog;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
 uses printers;
{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
   printersetupdialog1.execute;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
lines:integer;
prntext:system.text;//将PRNTEXT声名为一个在SYSTEM程序单元当中定义的文本文件
begin
  if printdialog1.Execute then
  assignprn(prntext);//将PRNTEST分配给打印机
  rewrite(prntext);//调用REWRITE函数，为输出打开已分配的文件
  printer.canvas.Font:=memo1.Font;//把当前MEMO1的字体指定给打印对象的CANVAS的字体属性
  for lines:=0 to memo1.lines.count-1 do
  writeln(prntext,memo1.lines[lines]);//把MEMO的内容写到打印机对象
  system.Close(prntext);//关闭打印文件
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
 memo1.Lines.LoadFromFile('c:\zebra.txt'); //在FORM建立时读入C:\DOS\OS2.TXT文件
end;

end.