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I have a custom Panel which upon resizing has its LayoutUpdated event and ArrangeOverride called twice.
So initially MeasureOverride and ArrangeOverride do their thing once upon open of the client window. Then, if I maximize the window each are called twice. The Available and Final Sizes respectively are not different between each iteration so I’m not sure what’s initiating this.
Is there a way to determine the cause of the Invalidation?
I think that it is called twice because the Height and Width changes. I think that both of those properties affect Measure and thus there is a layout pass for each one.