1Qt 5.9.3 is a bug-fix release. It maintains both forward and backward
2compatibility (source and binary) with Qt 5.9.0 through 5.9.2.
3
4For more details, refer to the online documentation included in this
5distribution. The documentation is also available online:
6
7http://doc.qt.io/qt-5/index.html
8
9The Qt version 5.9 series is binary compatible with the 5.8.x series.
10Applications compiled for 5.8 will continue to run with 5.9.
11
12Some of the changes listed in this file include issue tracking numbers
13corresponding to tasks in the Qt Bug Tracker:
14
15https://bugreports.qt.io/
16
17Each of these identifiers can be entered in the bug tracker to obtain more
18information about a particular change.
19
20****************************************************************************
21*                               Qt 5.9.3 Changes                           *
22****************************************************************************
23
24QtCore
25------
26
27 - QFileSystemWatcher:
28   * [QTBUG-64171] Fixed a bug that would cause the application to crash if
29     QFileSystemWatcher was created in an auxiliary thread on Windows.
30
31 - QStorageInfo:
32   * [QTBUG-61420] Fixed decoding of volume labels containing certain
33     uncommon characters on Linux.
34
35 - QThreadPool:
36   * Improved performance with large amount of QRunnable items.
37
38QtGui
39------
40
41 - [QTBUG-64239] Fixed memory corruption on scaled emojis.
42 - [QTBUG-63846] Fixed dragging inside a modal window when a
43   QShapedPixmapWindow is used.
44 - [QTBUG-61777] Fixed painting of zero-length lines with scaling.
45 - [QTBUG-61244] Fixed centering of some items in layouts.
46 - [QTBUG-63168] Fixed a crash when reparenting QWindowContainer.
47
48
49QtNetwork
50---------
51
52 - QHostAddress:
53   * [QTBUG-63764] Fixed a problem in QHostAddress not detaching in its
54     setters and thus spoiling shared data.
55
56 - QNetworkAccessManager:
57   * [QTBUG-63075] Added support for HTTP status 308.
58   * [QTBUG-61300] Fixed a problem with mixing headers from different
59     responses.
60   * [QTBUG-63471] Fixed redirects support in HTTP/2 protocol handler.
61   * [QTBUG-63313] Fixed cookies received during a redirect not being
62     applied in the redirect.
63   * [QTBUG-63142] Fixed HTTP method always being changed to GET when
64     redirected with 307 and 308.
65
66 - QNetworkCookieJar:
67   * Fixed cookies with a root path ("/") not matching an empty path ("").
68
69QtSql
70------
71
72 - PostgreSQL:
73   * Fixed handling of binary data for PostgreSQL 9.x and later
74   * Fixed detection of PostgreSQL 9.x and later
75
76 - OCI:
77   * [QTBUG-57765] Fixed a bug that would see some cached results returned
78     when issuing a forward only query
79
80QtWidgets
81---------
82
83 - QAction:
84  * [QTBUG-62006] Ensured setData() does not emit changed() if no change
85    happened.
86
87 - QDockWidget:
88  * [QTBUG-63526] Fixed an issue in QDockWidgets where the widget would
89    not resize despite showing a resize cursor.
90
91 - QHeaderView:
92   * [QTBUG-54601] Fixed resizing when hidden sections were involved.
93   * [QTBUG-64036] Ensured maximumSectionSize property is honored during
94     resizeSections().
95
96 - QListView:
97   * [QTBUG-45427] Fixed the laying out of a QListView in a grid layout
98     after the dataChanged() signal is emitted.
99
100 - QMenuBar
101   * [QTBUG-34160] Fixed a problem with adding the same QAction to more than
102     one menu.
103
104 - QWidget
105   * [QTBUG-56860] Fixed widget losing focus after showing menu second time.
106
107 - QWizard:
108   * [QTBUG-46894] Fixed the shortcut for the Next button on Windows.
109
110
111Platform-specific changes
112-------------------------
113
114 - Cocoa:
115   * optimize backingstore flush on 10-bit displays
116   * [QTBUG-57076] [QTBUG-63712] Attach menu items when updating the menubar
117   * [QTBUG-63444] Toggle titlebar transparency to support unified toolbar
118
119 - iOS:
120   * [QTBUG-57428][QTBUG-63660] add support for adding mimetypes other than text
121   on the clipboard
122
123 - Windows:
124   * [QTBUG-63654] Windows font database: Remove clamping of default font size
125
126 - X11:
127   * [QTBUG-48034] Don't misdetect certain trackballs as tablets
128   * [QTBUG-62840] Fix crash on X servers with BGR888 display
129
130Third-Party Code
131----------------
132
133 - Improved documentation about Freetype 2 licenses.
134 - Updated Sqlite to fix CVE-2017-10989.
135 - Updated bundled libpng to version 1.6.34.
136
137Tools
138-----
139
140 * qmake:
141   - [QTBUG-63409] Fixed a build error with MSVC when concrt.h was included
142     while exceptions are disabled.
143   - [QTBUG-62985] Fixed a bug that caused the accidental creation of files
144     called "NUL" when using MinGW.
145