Thanks for your answer. I am using ElementFlow to "scroll" through the open UserControl of my App. Since there is no need to work directly on the UserControls in ElementFlow (you have to select them by doubleclick) I will try the
- Going through the Visual Tree and setting the visibility of the WindowsFormsHosts to Hidden. This works already but of course you get a "hole" in the UI.
- Adding an image to the VisualTree at the location of the WindowsFormsHost with the screen content of the WindowsFormsHost so that you still "see" the WindowsFormsHost (although its only an image now). That where I am currently working.
- When you select an UserControl to work with then go back this chain.
I will let you know whether this works.
Thanks and cheers