WPF Knowing issues latest AddinExpress udoate

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WPF Knowing issues latest AddinExpress udoate
 
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Daniel Lutz




Posts: 31
 Joined: 2023-02-27
Hello AddinExpress team,

is there a list of what kind of knowing issues are depend on WPF usage? We struggle with a problem which is hard to reproduce o our test systems but a customer report this. We have a PowerPoint TaskPane which include a WPFHost object with an WPF UserControl.

In some cases the customer reports that some click events not raised in a right way so that selection inside side ComboBoxes and so on failed. The same with keyboard navigation. They cannot select an item. It seems to be that the navigavle area and the "visual visibel" area is not the same.

It seems to be only happen when they use an Laptop AND an external monitor and both have DIFFERENT dpi settings. When both displays use the same dpi settings it works.

Best regards
Daniel
Posted 24 Mar, 2026 07:51:36 Top
Andrei Smolin


Add-in Express team


Posts: 19211
 Joined: 2006-05-11
Hello Daniel,

There's no such a list.

Daniel Lutz writes:
It seems to be that the navigavle area and the "visual visibel" area is not the same.


I dimly remember Microsoft having problems with controls drawn outside of the WPFHost area. I believe this related to controls shown from a right-click menu.

Regards from Poland (GMT+1),

Andrei Smolin
Add-in Express Team Leader
Posted 24 Mar, 2026 11:27:05 Top