unit1.~pas

该程序为作者的第四个MEMO控件的程序它介绍了如何学习编简单的打字训练软件

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    Button2: TButton;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Memo1Change(Sender: TObject);
    procedure FormActivate(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    n:integer;
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

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

procedure TForm1.Memo1Change(Sender: TObject);
var n1,n2 :integer;
    //  s:real;
 begin
   n1:=length(memo1.Lines[n]);
   n2:=length(memo1.Lines[n+1]);
   if n2>=n1 then
      begin
       n:=n+3;
       //label1.caption:=inttostr(n1)+' '+inttostr(n2)+' '+inttostr(n);
//       memo1.Lines[n]:='';
       memo1.SetFocus;
       n:=n-1;
      end
      end;
procedure TForm1.FormActivate(Sender: TObject);
 begin
 memo1.Lines[1]:='';
 memo1.SetFocus;
// n:=0;
//label1.caption:=inttostr(n);
      end;
procedure TForm1.Button2Click(Sender: TObject);
begin
 memo1.Lines[1]:='';
 memo1.Lines[3]:='';
 memo1.Lines[5]:='';
 memo1.Lines[7]:='';
 memo1.Lines[1]:='';
 memo1.SetFocus;
end;

end.