C# GDI+ problems please help.?

Question

On my form i use GDI+ to draw things, but if another windows goes over my form, my form is minimized, or a message box shows up what i drew on my form is erased how can i solve this?

Answer 1

You need to force a redraw of your form when it becomes the active window, or when it's window state changes. Handle those events and then call your form's Invalidate() method to force a redraw.

Answer 2

Stop using GDI and start using the new WPF. It's faster and way better.

http://en.wikipedia.org/wiki/Windows_Pre...