Examples > CADPreview example

Place TImage and TOpenPictureDialog on the Delphi form. Include the reference to DWG to the Uses section of the form. When OpenPictureDialog1.Execute has called DWG files will be shown in the Dialog preview window automatically. When the button is pressed, the selected DWG file is loaded into the scrolling window. The next example is used with TImage.

 

unit Unit1;

 

interface

 

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

Dialogs, ExtDlgs, StdCtrls, ExtCtrls, DWG;

 

type

 

TForm1 = class(TForm)

  Image1: TImage; 

  Button1: TButton;

  OpenPictureDialog1: TOpenPictureDialog;

  procedure Button1Click(Sender: TObject);

  procedure OpenPictureDialog1Show(Sender: TObject);

  procedure OpenPictureDialog1Close(Sender: TObject);

private

{­ Private declarations }

public

{­ Public declarations }

end;

 

var

  Form1: TForm1;

 

implementation

{­$R *.dfm}

 

procedure TForm1.Button1Click(Sender: TObject);

begin

  if OpenPictureDialog1.Execute then

    Image1.LoadFromFile(OpenPictureDialog1.FileName);

end;

 

procedure TForm1.OpenPictureDialog1Show(Sender: TObject);

begin

  CADPreview := True;

end;

 

procedure TForm1.OpenPictureDialog1Close(Sender: TObject);

begin

  CADPreview := False;

end;

 

end.