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Type: Bug
Resolution: Done
Priority: P2: Important
Fix Version/s: 5.1.0
Affects Version/s: 5.0.0 RC 1
Component/s: GUI: Painting
Labels:
None
Environment:
Windows 7 64b

Commits:
Updating translucency: fd372f3866acecf31f69992d6d99fc7c965018bb Windows, Mac: c95b0982d5466069de3ac491ce3cbf9337060e3d , bc616641a1c3d2d79cf7c5ee9e80a59279edb756 b3bed2c8deb8c4f09ac7b5023cfc24a69a95ad46 (Format)

Widget with WA_TranslucentBackground + FramelessWindowHint (because in windows) does not repaint correctly anymore.
For reproduce just create a new QMainWindow project, place a QPushButton and then drag&drop the QToolBar.

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qtbug28531_diag121220.patch
20 Dec '12 16:36
2 kB
Friedemann Kleint
TestPainter.tar
18 Apr '13 09:59
53 kB
Jonathan Courtois
menuTest.zip
05 Sep '14 09:52
0.9 kB
Mihail Naydenov
qtbug28531_orig.zip
05 Mar '15 10:05
1 kB
Friedemann Kleint
qtbug28531.zip
15 Jan '16 08:53
57 kB
Friedemann Kleint

relates to

QTBUG-33114 Windows: QWidget with flag WA_TranslucentBackground | FramelessWindowHint makes QML not show.

Closed

QTBUG-37581 Qt 4.8, Windows: Custom Drawings Using PaintEvent & Setting widget attribute Qt::WA_Translucent, Not working On Windows if Qt::WindowTitleHint is set

Closed

QTBUG-30181 Calling winId() into my promoted QWidget's constructor (and not just in there), causes a lot weird problems in a QMainWindow.

Open

QTBUG-29010 A frameless Window with opacity animation turns black at the end of animation.

Closed

QTBUG-29401 Can’t set WA_TranslucentBackground to a QWidget

Closed

QTBUG-43854 Windows: Qt::WA_TranslucentBackground prevents frameless tool window to show up

Closed

QTBUG-29109 showMinimize() won't work with Frameless main window

Closed

QTBUG-33025 Windows: Animating window opacity does not work if FramelessWindowHint is set for non-translucent windows.

Closed

replaces

QTBUG-28802 QWidget::setAttribute(Qt::WA_BrushedMetal) results in an invisible window

Closed

QTBUG-29100 Alpha channel accumulating

Closed

(3 relates to, 2 replaces)

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For Gerrit Dashboard: QTBUG-28531
#	Subject	Branch	Project	Status	CR	V
44274,1	Update translucency correctly in QtWidgets.	stable	qt/qtbase	Status: MERGED	+2	0
44485,1	WIP: Fix Clear backingstore for windows with alpha channel on Mac.	stable	qt/qtbase	Status: ABANDONED	0	0
46961,1	Windows: Fix setting of layered windows.	stable	qt/qtbase	Status: MERGED	+2	0
47162,1	Fix broken fading of menus.	stable	qt/qtbase	Status: MERGED	+2	0
56931,2	Fix transparent toplevels on Mac OS X again..	stable	qt/qtbase	Status: MERGED	+2	0