unit1.pas

《参透Delphi Kylix》通过131个事例

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    StatusBar1: TStatusBar;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    procedure FormDestroy(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
    FJuMemo: TJuMemo;
  public
    { Public declarations }
    procedure MemoCaretPosChange(Sender: TObject; const ARow, ACol: Longint);
    procedure MemoHScroll(Sender: TObject; ScrollCode: TScrollCode; var ScrollPos: Integer);
    procedure MemoVScroll(Sender: TObject; ScrollCode: TScrollCode; var ScrollPos: Integer);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormDestroy(Sender: TObject);
begin
  if Assigned(FJuMemo) then FreeAndNil(FJuMemo);
end;

procedure TForm1.MemoCaretPosChange(Sender: TObject; const ARow, ACol: Longint);
begin
  Edit1.Text := IntToStr(FJuMemo.Row);
  Edit2.Text := IntToStr(FJuMemo.Col);
  Edit3.Text := IntToStr(FJuMemo.Length[FJuMemo.Row]);
  StatusBar1.SimpleText := Format('Row: %d, Col: %d, Len: %d', [ARow, ACol, FJuMemo.Length[ARow]]);
end;

procedure TForm1.MemoHScroll(Sender: TObject; ScrollCode: TScrollCode;
  var ScrollPos: Integer);
begin
  StatusBar1.SimpleText := Format('ScrollCode: %d, ScrollPos: %d', [Ord(ScrollCode), ScrollPos]);
end;

procedure TForm1.MemoVScroll(Sender: TObject; ScrollCode: TScrollCode;
  var ScrollPos: Integer);
begin
  StatusBar1.SimpleText := Format('ScrollCode: %d, ScrollPos: %d', [Ord(ScrollCode), ScrollPos]);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  if not Assigned(FJuMemo) then
  begin
    FJuMemo := TJuMemo.Create(Self);
    FJuMemo.Parent := Self;
    FJuMemo.Name := 'FJuMemo';
    FJuMemo.Width := 360;
    FJuMemo.Align := alLeft;
    FJuMemo.Lines.LoadFromFile('Result.txt');
    FJUMemo.OnCaretPosChange := Self.MemoCaretPosChange;
    FJuMemo.OnHScroll := MemoHScroll;
    FJuMemo.OnVScroll := MemoVScroll;
  end;
end;

end.