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Windows QPA: Handle DPI induced geometry change for frameless windows

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Make a manual call to the geometry change handling function after a
WM_DPICHANGED event if the window is frameless, since WM_SIZE and
WM_MOVE will not be called.

Fixes: QTBUG-109429
Pick-to: 6.5
Change-Id: I79b9f386fe120ee3d06d6490d3f31a7a5d7121b0
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
This commit is contained in:
Timothée Keller 2023-02-07 16:54:59 +01:00
parent efd9e3a02b
commit e86fcae221
1 changed files with 5 additions and 0 deletions
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5
src/plugins/platforms/windows/qwindowswindow.cpp
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@ -2009,6 +2009,11 @@ void QWindowsWindow::handleDpiChanged(HWND hwnd, WPARAM wParam, LPARAM lParam)
SetWindowPos(hwnd, nullptr, prcNewWindow->left, prcNewWindow->top,
prcNewWindow->right - prcNewWindow->left,
prcNewWindow->bottom - prcNewWindow->top, SWP_NOZORDER | SWP_NOACTIVATE);
// If the window does not have a frame, WM_MOVE and WM_SIZE won't be
// called which prevents the content from being scaled appropriately
// after a DPI change.
if (m_data.flags & Qt::FramelessWindowHint)
handleGeometryChange();
}
// Re-apply mask now that we have a new DPI, which have resulted in