78 lines
1.9 KiB
Plaintext
78 lines
1.9 KiB
Plaintext
program HelloWorldAnimatedGUI;
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uses {$IFDEF UNIX} {$IFDEF UseCThreads}
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cthreads, {$ENDIF} {$ENDIF}
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Interfaces, // this includes the LCL widgetset
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Forms,
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Classes,
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Controls,
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StdCtrls,
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ExtCtrls;
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type
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{ TFrmHelloWorldAnim }
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TFrmHelloWorldAnim = class(TForm)
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constructor CreateNew(AOwner: TComponent; Num: integer = 0); override;
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procedure lblTextAnimateClick(Sender: TObject);
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procedure tmrAnimateTimer(Sender: TObject);
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private
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{ private declarations }
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lblTextAnimate: TLabel;
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tmrAnimate: TTimer;
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FDirection: boolean;
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public
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{ public declarations }
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end;
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var
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FrmHelloWorldAnim: TFrmHelloWorldAnim;
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{ TFrmHelloWorldAnim }
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constructor TFrmHelloWorldAnim.CreateNew(AOwner: TComponent; Num: integer);
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begin
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inherited CreateNew(AOwner, Num);
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Height := 50;
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lblTextAnimate := TLabel.Create(self);
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with lblTextAnimate do
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begin
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Caption := 'Hello World! ';
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Align := alClient;
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Alignment := taCenter;
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font.Name := 'Courier New';
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font.size := 20;
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OnClick := @lblTextAnimateClick;
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Parent := self;
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end;
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tmrAnimate := TTimer.Create(self);
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with tmrAnimate do
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begin
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Interval := 100;
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OnTimer := @tmrAnimateTimer;
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end;
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end;
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procedure TFrmHelloWorldAnim.lblTextAnimateClick(Sender: TObject);
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begin
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FDirection := not FDirection;
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end;
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procedure TFrmHelloWorldAnim.tmrAnimateTimer(Sender: TObject);
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begin
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if FDirection then
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lblTextAnimate.Caption :=
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copy(lblTextAnimate.Caption, length(lblTextAnimate.Caption), 1) +
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copy(lblTextAnimate.Caption, 1, length(lblTextAnimate.Caption) - 1)
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else
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lblTextAnimate.Caption :=
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copy(lblTextAnimate.Caption, 2, length(lblTextAnimate.Caption) - 1) +
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copy(lblTextAnimate.Caption, 1, 1);
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end;
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begin
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RequireDerivedFormResource := False;
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Application.Initialize;
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Application.CreateForm(TFrmHelloWorldAnim, FrmHelloWorldAnim);
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Application.Run;
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end.
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