How to: Create a Shaped Windows Form

This example gives a form an elliptical shape that resizes with the form.

Example

Protected Overrides Sub OnPaint( _
ByVal e As System.Windows.Forms.PaintEventArgs)
     Dim shape As New System.Drawing.Drawing2D.GraphicsPath
     shape.AddEllipse(0, 0, Me.Width, Me.Height)
     Me.Region = New System.Drawing.Region(shape)
 End Sub

protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
    System.Drawing.Drawing2D.GraphicsPath shape = new System.Drawing.Drawing2D.GraphicsPath();
    shape.AddEllipse(0, 0, this.Width, this.Height);
    this.Region = new System.Drawing.Region(shape);
}

protected:
    virtual void OnPaint(
        System::Windows::Forms::PaintEventArgs^ e) override
    {
        System::Drawing::Drawing2D::GraphicsPath^ shape =
            gcnew System::Drawing::Drawing2D::GraphicsPath();
        shape->AddEllipse(0, 0, this->Width, this->Height);
        this->Region = gcnew System::Drawing::Region(shape);
    }

Compiling the Code

This example requires:

• References to the System.Windows.Forms and System.Drawing namespaces.

This example overrides the OnPaint method to change the shape of the form. To use this code, copy the method declaration as well as the drawing code inside the method.

See Also

Reference

OnPaint

Region

System.Drawing

AddEllipse

Region

Other Resources

Getting Started with Graphics Programming