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Airspace problems in ShellBrowser WPF

Question / Problem

I'm using the ShellBrowser WPF Components. I'm seeing problems concerning the z-order of controls, the ShellBrowser controls always appear on top, while they should be hidden by other controls.

Answer / Solution

Not all controls in the ShellBrowser WPF Edition are native WPF controls. Some - like ExplorerBrowser - host ActiveX controls, others like currently the ShellTreeView and ShellListView are Windows Form based.

Mixing those components in a WPF app is underlying some technological restrictions that turn up as "airspace problems" (see e.g. https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/technology-regions-overview).

In case of doubt, please don't hesitate to test the controls intensively using the demo version.