The drawing get erased on minimizing the form

Question

Hi friends I am drawing several circles/recatangles etc. with this code but whenever I use to minimize the form of other form come on its front the drawings get erased. System.Drawing.SolidBrush myBrush = new System.Drawing.SolidBrush(System.Drawing.Color.Red); System.Drawing.Graphics formGraphics = panelforImage.CreateGraphics(); formGraphics.FillRectangle(myBrush new Rectangle(0 0 200 150)); myBrush.Dispose(); formGraphics.Dispose(); Please help me out.

Jean Paul · Answer

Whenever the form is minimized/other form is set above the current form the default paint algorithm will be executed and your custom drawings will be lost. There are two solutions i could suggest you: 1) Do the drawing in the paint event of the panel (may be you have to derive a custom panel for it) or 2) Do the drawings in a Bitmap object that should retain the pixel values.

iinf · Answer

Thanks.