How can I change the Button shape?

Applies To: C++Builder 1 or higher
Category: Knowledge Base

Is it possible to change the shape of my Buttons? How?

 

 

1.

  Start a new application.

 

2.

  Add two (2) Buttons.

 

3.

  Edit the OnCreate event of your form and insert:

 

void __fastcall TForm1::FormCreate(TObject *Sender)

{

    Color = clWhite;

 

    HRGN ell_region = CreateEllipticRgn(2, 2,

        Button1->Width - 2, Button1->Height - 2);

    SetWindowRgn(Button1->Handle, ell_region, true);

 

    TRect r = Button2->ClientRect;

    HRGN round_region = CreateRoundRectRgn(r.Left,

        r.Top, r.Right, r.Bottom, 20, 20);

    SetWindowRgn(Button2->Handle, round_region, true);

}

 

You can use the CreateEllipticRgn, CreatePolygonRgn and CreateRoundRectRgn to specify a different shape for your Buttons. As you can see, the result is not always perfect. Therefore, it's recommended to create your own component instead of changing the window region.

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