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Use WS_EX_NOACTIVATE to prevent window from getting focused

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On top of handling ActivateWindowEvent,MouseActivateWindowEvent and
PointerActivateWindowEvent events and returning MA_NOACTIVATE we can
also set the window extended style to prevent windows from stealing
focus in special cases.
Also on top all those mentioned events, when the window is requested
to get keyboard focus, it should check if the window accepts focus
or not. If it does not, then it should inform the underlying system
that the window does not accept the focusIn event.
[ChangeLog][Windows] Windows with flag Qt::WindowDoesNotAcceptFocus
no longer have a taskbar entry.

Fixes: QTBUG-131714
Change-Id: I79f767b1622449ba05b41f8b80bf390d8cecfff8
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Zhao Yuhang <2546789017@qq.com>
(cherry picked from commit c2bdf7636eb46e56760f3e2f6d457c8f14627576)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Morteza Jamshidi 2025-01-30 16:41:35 +01:00 committed by Qt Cherry-pick Bot
parent 2a613662a3
commit c3e0c0099f
3 changed files with 7 additions and 0 deletions
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2
src/corelib/global/qnamespace.qdoc
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@ -2345,6 +2345,8 @@
\value WindowDoesNotAcceptFocus Informs the window system that this window should
not receive the input focus.
\note On Windows, this prevents the window from appearing in the taskbar.
\value MaximizeUsingFullscreenGeometryHint Deprecated alias for Qt::ExpandedClientAreaHint
\value [since 6.9] ExpandedClientAreaHint Requests that the window's client area is

2
src/plugins/platforms/windows/qwindowscontext.cpp
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@ -1217,6 +1217,8 @@ bool QWindowsContext::windowsProc(HWND hwnd, UINT message,
case QtWindows::PointerEvent:
return sessionManagerInteractionBlocked() || d->m_pointerHandler.translatePointerEvent(platformWindow->window(), hwnd, et, msg, result);
case QtWindows::FocusInEvent: // see QWindowsWindow::requestActivateWindow().
if (platformWindow->window()->flags() & Qt::WindowDoesNotAcceptFocus)
return false;
case QtWindows::FocusOutEvent:
handleFocusEvent(et, platformWindow);
return true;

3
src/plugins/platforms/windows/qwindowswindow.cpp
View File

@ -819,6 +819,9 @@ void WindowCreationData::fromWindow(const QWindow *w, const Qt::WindowFlags flag
style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN ;
if (flags & Qt::WindowDoesNotAcceptFocus)
exStyle |= WS_EX_NOACTIVATE;
if (topLevel) {
if ((type == Qt::Window || dialog || tool)) {
if (!(flags & Qt::FramelessWindowHint)) {