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WPF Drag and drop - System.InvalidOperationException. Dispatcher processing has been suspended, but messages are still being processed
In your repro project you're using TextBox but you made them all read only. If you really don't need them to be able to be changed then use a TextBlock and the exception goes away.
I had a similar ...
1
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Accepted
Drag and Drop Widgets within QScrollArea in PyQt6 Not Working Correctly
Most UI toolkits and graphics related software are based on the concepts of relative coordinate systems and parent/child relations (which is common in OOP).
Your first attempt is invalid, because the ...
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