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Windows QPA: Do not raise/lower windows with Qt::WindowStaysOnTop/BottomHint 

Prospectively helps to fix Qt::WindowStaysOnTopHint not working reliably
on Windows by preventing HWND_TOPMOST being cleared in raise().

Task-number: QTBUG-50271
Change-Id: I88f916a1cf8a2082236360b9eab874ad22b85762
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
This commit is contained in:
Friedemann Kleint 2017-05-15 09:12:37 +02:00
parent 791df9821d
commit 329a029c36
1 changed files with 4 additions and 2 deletions
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2
src/plugins/platforms/windows/qwindowswindow.cpp
View File

@ -870,12 +870,14 @@ void QWindowsBaseWindow::hide_sys() // Normal hide, do not activate other window
void QWindowsBaseWindow::raise_sys()
{
qCDebug(lcQpaWindows) << __FUNCTION__ << this << window();
if ((window()->flags() & (Qt::WindowStaysOnTopHint | Qt::WindowStaysOnBottomHint)) == 0)
SetWindowPos(handle(), HWND_TOP, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
}
void QWindowsBaseWindow::lower_sys()
{
qCDebug(lcQpaWindows) << __FUNCTION__ << this << window();
if ((window()->flags() & (Qt::WindowStaysOnTopHint | Qt::WindowStaysOnBottomHint)) == 0)
SetWindowPos(handle(), HWND_BOTTOM, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
}