79be5fa986
Initially the function was used as a helper function for QWidget, implemented in da55a1b04121abd44d9c72e0c7cba7d72f16d4f2. But with e0bb9e81ab1a9d71f2893844ea82430467422e21 we started overriding it e.g. QDialog. This "worked" because QDialog itself would call the private helper, but left a footgun when called via a plain QWidget pointer, as we did in 5ba0982b2879a1a4c13bf97467b8e5ad296e57a2. That specific instance of the problem was solved by the change in fc4c6fb5f6bd6bd63b13f1f8b5b7a7289a5fd230, but the trap still exists. To ensure we can use the function in a polymorphic context in the future we make it virtual. Task-number: QTBUG-127806 Change-Id: Ic0810c5439b1e696cfbf199e701f41217acc5742 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io> (cherry picked from commit 1a0f056f318417ba5e54c8110257b75cf5537acb) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>