genus said: You mention that HostPanel is not intended to work with WindowsHostPanel - do you have a suggestion how we should host Delphi code within a WPF Plugin?Unfortunately there is no solution for this scenario exists at the moment, currently we support only WinForms, VCL and FMX as host platforms.
The problem with the HostPanel being hosted in the WindowsFormsHost is that host panel tries to access to the parent Form to perform some actions (like focus handling), so this may be the reason why you experience problems with focus.
However, please feel free to contact us, and i will try to help you with these problems.
genus said: We would like to see a solution with more "seamless" transport of focus and shortcut keys between the plugin levels as this would help in making the plugin framework appear as one integrated platform instead of the current feeling where a lot of effort has to be done to integrate the plugins.I've logged your suggestion from the previous topic regarding focus for review, so we will try to fix this problem. But what about shortcuts key? Currently we are not aware of any problems with them.
genus said: Would it be an idea to use the default WPF tab-key handling and look at the interfaces IKeyboardInputSite and IKeyboardInputSink when it comes to transition of focus between host/plugins?Thank you for the idea.