Change Details

`topLevelWidget()` has been deprecated since Qt4.8, and returns `window()` Backport of Core PR14801

`topLevelWidget()` has been deprecated since Qt4.8, and returns `window()` Backport of Core [[https://github.com/bitcoin/bitcoin/pull/14801 | PR14801]]

`topLevelWidget()` has been deprecated since Qt4.8, and returns `window()` Backport of Core [[https://github.com/bitcoin/bitcoin/pull/14801 | PR14801]]