Drawing Graphics Disappear in VB.net

Question

I have a simple program that you can draw on the screen with FillEllipse and FillRectangle. My problem is that when you drag another window over even a small portion of the scre

Answer 1

@SLaks already told you to do all painting in the OnPaint method. Here's a little more information. If you're trying to draw on a form, you would override the OnPaint method and do all your painting using the Graphics instance that is passed into the method. Here is more information on the topic:

• How to use the CreateGraphics method
• CreateGraphics. A boon or a curse?

Protected Overrides Sub OnPaint(e As System.Windows.Forms.PaintEventArgs)
    MyBase.OnPaint(e)
    e.Graphics.FillEllipse(Brushes.Red, Me.ClientRectangle)

End Sub