By using multiple programming tricks I've found on the internet, I've managed to get the more complex forms in my application to display crisply without any screen flicker. However I haven't been able to resolve an issue when restoring a minimized window. If I restore the window by clicking on the minimized item in the Windows task bar, it restores smoothly without any visible screen painting. However if I restore the same form in code by setting WindowState = FormWindowState.Normal I get some annoying rendering action. Parts of the form go black while it is being restored. Windows obviously knows something about restoring a minimized window that I don't. Is there another/better way besides setting WindowState?

I got the restore to work better by setting the WindowState in a different place in my code. There were likely some events firing that were taking some cpu cycles away from the restore. However I did notice that it works much better on Windows 7 than Windows 8.1. Windows 7 uses an animation when restoring that seems to hide any screen repainting. Windows 8.1 doesn't use the animation and some of the screen re-painting is visible.

Hi Larry,

Thanks for sharing this information.

What .net runtime are you using?  I am using 4.6 but keep in mind that this kind of issue will depend on the controls you have in your forms, in my case, all my forms have a SF Panel Manager and at least one PanelManagerPage.

Here is a quick video (mute) of my application just minimizing 2 forms, so you can see how is working on my end.
http://screencast.com/t/4uIzIObenguI

Edhy Rijo