Graph program

Development Platform:

Delphi

CheckUn.pas：Code Content

							unit CheckUn;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, printers;
type
  TCheDelF = class(TForm)
    Memo1: TMemo;
    bvl1: TBevel;
    btnprn: TButton;
    btnsav: TButton;
    btnclo: TButton;
    dlgSave1: TSaveDialog;
    dlgPnt1: TPrintDialog;
    procedure btnprnClick(Sender: TObject);
    procedure btncloClick(Sender: TObject);
    procedure btnsavClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  CheDelF: TCheDelF;
implementation
uses UnitPcut;
{$R *.dfm}
procedure TCheDelF.btnprnClick(Sender: TObject);
var
  lines:integer;
  prntext:system.text;
  //将PRNTEXT声明为一个在SYSTEM程序单元当中定义的文本文件
begin
  if dlgPnt1.execute then
    begin
      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;
end;
procedure TCheDelF.btncloClick(Sender: TObject);
begin
   Close;
end;
procedure TCheDelF.btnsavClick(Sender: TObject);
begin
  dlgSave1.Filter:='文本文件(*.txt)|*.TXT';
  dlgSave1.DefaultExt:='txt';
  if dlgSave1.Execute then
    Memo1.Lines.SaveToFile(dlgSave1.FileName)
end;
end.

						