Propagate the hosting HWND to the new IFileDialogs #9789
Merged
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This is required to maintain the modality of the dialogs, which we lost
when we moved from Pickers to IFileDialog. The HWND hosting Window API
we dreamed up is incompatible with IModalDialog, because IModalDialog
requires the HWND immediately upon
Show
. We're smuggling it in auint64, as is tradition.
zadjii-msft noticed this in #9760.