diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowswindow.cpp')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowswindow.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp index 48ffd84f98..5768800947 100644 --- a/src/plugins/platforms/windows/qwindowswindow.cpp +++ b/src/plugins/platforms/windows/qwindowswindow.cpp @@ -1831,7 +1831,12 @@ QMargins QWindowsWindow::frameMarginsDp() const // event sequences, introduce a dirty flag mechanism to be able // to cache results. if (testFlag(FrameDirty)) { - m_data.frame = QWindowsGeometryHint::frame(style(), exStyle()); + // Always skip calculating style-dependent margins for windows claimed to be frameless. + // This allows users to remove the margins by handling WM_NCCALCSIZE with WS_THICKFRAME set + // to ensure Areo snap still works (QTBUG-40578). + m_data.frame = window()->flags() & Qt::FramelessWindowHint + ? QMargins(0, 0, 0, 0) + : QWindowsGeometryHint::frame(style(), exStyle()); clearFlag(FrameDirty); } return m_data.frame + m_data.customMargins; |