63 lines
954 B
ObjectPascal
63 lines
954 B
ObjectPascal
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unit drawingdisplay;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, drawing;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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procedure FormCreate(Sender: TObject);
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procedure rgShapeClick(Sender: TObject);
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private
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rgShape: TRadioGroup;
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FDrawing: TDrawing;
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procedure CreateANewDrawing;
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public
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end;
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const extent = 50;
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var
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Form1: TForm1;
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implementation
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procedure TForm1.CreateANewDrawing;
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begin
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if (rgShape.ItemIndex < 0) then Exit;
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FDrawing.Free;
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case rgShape.ItemIndex of
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0: begin
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FDrawing := TSquare.Create(Self, extent);
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FDrawing.Left := 10;
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end;
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1: begin
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FDrawing := TCircle.Create(Self, extent);
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FDrawing.Left := 60;
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end;
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end;
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FDrawing.Top := 10;
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FDrawing.Parent := Self;
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end;
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procedure TForm1.FormCreate(Sender: TObject);
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begin
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CreateANewDrawing;
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end;
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procedure TForm1.rgShapeClick(Sender: TObject);
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begin
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CreateANewDrawing;
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end;
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{$R *.lfm}
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end.
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