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Type: Bug
Resolution: Fixed
Priority: P3: Somewhat important
Fix Version/s: None
Affects Version/s: 5.12.0
Component/s: GUI: High-DPI, GUI: Window management
Labels:
- Reported_by_support_standard
Environment:
Windows 10

Commits:
6272dddad (dev)

When a menubar spans across displays using different DPIs then opening menus on either display can show the menu in the wrong place. With the example attached, move the window so it cuts across different displays then open a menu on the one side and then one on the other side and observe that one of them is placed incorrectly.

This is only happening when HighDpi is enabled as it is not a problem without it.

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qtdeclarative-highdpi-spanning-windows.patch
2 kB
13 Mar '19 23:34
qtbug73231.zip
1 kB
23 Jan '19 13:00
qtbug73231.zip
5 kB
08 Apr '19 08:28
qtbug73231_screen_diag.diff
3 kB
29 Jan '19 10:46
qtbug73231_pos_diag.diff
4 kB
29 Jan '19 10:46
qtbug73231_nativemenu.zip
3 kB
19 Mar '19 08:50
qtbug73231_log.txt
3 kB
24 Jan '19 14:46
qscreen_stop_using_single_logicalDpi_for_all_screens.patch
0.9 kB
07 Mar '19 21:25
MenusExampleDraggedOnto200PercentAfterQScreenPatch.PNG
12 kB
07 Mar '19 21:28
MenusExampleDraggedOnto200Percent.PNG
12 kB
07 Mar '19 02:59
MenusExampleDraggedOnto100Percent.PNG
5 kB
07 Mar '19 03:06
MenusExampleCreatedOn200Percent.PNG
10 kB
07 Mar '19 03:05
MenusExampleCreatedOn100PercentAfterQScreenPatch.PNG
4 kB
07 Mar '19 21:36
MenusExampleCreatedOn100Percent.PNG
6 kB
07 Mar '19 02:59
menu-action-screen-spannig-issue.png
156 kB
12 Mar '24 12:47
DraggingFrom100To200PercentFromTopLeft.PNG
330 kB
13 Mar '19 23:42

duplicates

QTBUG-73001 [Win][HiDPI][Regression 5.12.0] global positions are incorrect

Closed

relates to

QTBUG-59794 REG 5.9.x->5.12: Windows: Menus have wrong size when AA_EnableHighDpiScaling is set

Closed

QTBUG-72504 Moving QML window between screens with different DPI breaks QML layout and size

Closed

QTBUG-76162 When using separate dual displays (no Xinerama), menus will popup on display 0 even if the parent is on display 1

Closed

QTBUG-53022 HighDPi: Update scale factor setting for devicePixelRatio scaling (AA_EnableHighDpiScaling)

Closed

QTBUG-78320 [HighDPI multi-monitor Mixed screen scale factors] QCursor::setPos setting incorrect positions on non-primary monitor

Closed

QTBUG-73014 When there is a mixture of windows with different DPIs then specifying a position for a window can end up being incorrectly placed

Closed

resulted in

QTBUG-77255 [Reg 5.12.4 -> 5.12.5] Mapping between local and global screen coordinates is broken when window on non-primary HighDPI display

Closed

QTBUG-78158 Opening a window on a secondary display that has different resolution/DPI behaves oddly with QT_USE_NATIVE_WINDOWS=1

Closed

(2 relates to, 2 resulted in)

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For Gerrit Dashboard: QTBUG-73231
#	Subject	Branch	Project	Status	CR	V
250953,3	WIP: Enable finding the correct screen when windows overlap screens	5.12	qt/qtbase	Status: ABANDONED	-2	0
250954,2	WIP: QMenu::popup Fix menu positions when overlapping screens	5.12	qt/qtbase	Status: ABANDONED	-2	0
251126,5	WIP: QMenuBar: Fix placement of menus when spanning screens	5.12	qt/qtbase	Status: ABANDONED	-2	0
251394,9	Fix QWindow::mapToGlobal()/mapFromGlobal() for multi-screen windows	5.12	qt/qtbase	Status: MERGED	-2	0
251797,9	QHighDpi::fromNativePixels: use correct screen	5.12	qt/qtbase	Status: MERGED	+2	0
254885,4	WIP: Make transient child windows inherit scale factor	5.12	qt/qtbase	Status: DEFERRED	-2	0
255973,2	WIP: Make transient child windows inherit the screen from the parent	5.12	qt/qtbase	Status: ABANDONED	-2	0
256532,2	QMenu/QComboBox: Extract helper for determining the pop up geometry	5.12	qt/qtbase	Status: MERGED	+2	0
258304,8	Add accessors for QWindow and QScreen to QWidgetPrivate	dev	qt/qtbase	Status: MERGED	+2	0
266892,4	QtWidgets: Fix wrong screen returned by newly added QWidgetPrivate::associatedScreen()	dev	qt/qtbase	Status: MERGED	+2	0
546800,4	Fix multiscreen menu popup positioning corner case	dev	qt/qtbase	Status: MERGED	+2	0