Review Request 128260: Verify that QWindow::fromWinId returned a QWindow before using it

[Martin Gräßlin]

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Review request for KDE Frameworks.


Repository: kwindowsystem


Description
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Foreign window support is not available on all platforms. E.g. on
Wayland this returns a nullptr. Thus we cannot use it.


Diffs
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  src/kwindowsystem.cpp 407a67dbf1cade5adf648de25eddf9ec45db30fa 

Diff: https://git.reviewboard.kde.org/r/128260/diff/


Testing
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Thanks,

Martin Gräßlin

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