Qt 3.1.2 is a bugfix release. It maintains both forward and backward

compatibility (source and binary) with Qt 3.1.1

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*                               General                                    *

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Some build fixes on different platforms. Many small documentation

fixes.

XFree86 only: Tablet support now also looks for devices called "pen",

not just "stylus" and "eraser".

Animations: Less CPU-consuming roll effects.

X11 only: Disable effects on displays with <16bpp (rather than

falling back to the scrolling).

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*                               Library                                    *

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- QAccel

	Allow localization of status bar messages. Try harder to

	distinguish between an accelerator and the identical

	accelerator with Shift in case on of them is currently

	disabled.

- QAccessible

	Send accessibility notification for selection changes in

	menubars and popup menus. Send accessibility

	notifications for QListBox currentItem/selection changes.

- QActionGroup

	Implement visibility for drop-down actiongroups.

- QApplication

	Return focus to the widget that had it before a popup opened

	even if the focus is passed on during the show event handling.

	When the programmer/user explicitly sets the style (either

	with QApplication::setStyle or the -style command line

	option), do not reset the style on settings changes. Creating

	a second QApplication reads the settings again.

	Windows only: Emit aboutToQuit() when the user logs off. Send

	a focusOut event to the focus widget when the user tries to

	switch applications using Alt+Tab. Fixed setting of

	desktop-wide fade and scroll effects.

	Windows95/98/Me: Fixed enter/leave handling. Among other

	benefits this makes tooltips work more reliably.

	X11 only: Various fixes for input methods, e.g. Korean

	'ami'. Some startup performance improvements with

	QSettings. Mark the internal wakeUpGuiThread() pipe with

	FD_CLOEXEC. Call XFilterEvent before the public X11 event

	filters to avoid applications filtering out events that are

	necessary for input methods to operate. Removed old en_US

	locale workaround for Solaris. Close all open popups when 

	clicking on a screen different from the popup's screen. Do not

	force 256 colors on 8-bit display (used to be a workaround for

	a vnc bug).

	Mac only: Popupmenus that are dismissed by clicking outside of their

	bounds will no longer send the event to the widget clicked on (to avoid

	selection changing when canceling a context menu). QContextMenuEvents

	will be sent in the same style as Windows/X11 to make the platforms

	more consistent, additionally mapping of Ctrl+Click to RightButton has

	been added to allow easy context menu handling. Added warnings when a

	Qt application is run outside of an application bundle (in GUI mode)

	this will prevent accidental starving from events. Correct state when a

	modal dialog is shown (to disable the menubar) is used now, and is

	emulated to feel like Carbon applications. Fixed bug so that

	QApplication::processEvents() can be called before

	QApplication::exec(). Window activation will not change when a popup

	menu is displayed. Toolbar toggle button will only toggle the top dock

	in a QMainWindow. European text composition is supported now to take

	advantage of TextInput modules available on Mac OS X. Window activation

	has been improved to allow interleaving windows of different classes

	correctly (to decrease differences between X11/Windows and Mac).

- QBuffer

	IO_Truncate no longer detaches the explicitly shared byte array.

- QButton

	In setPixmap(), avoid laying out again if the new pixmap does

	not change the size. Use QSharedDoubleBuffer only if it is

	enabled (this avoids repainting errors).

- QButtonGroup

	Improve hit testing for cursor navigation.

- QCanvas

	Do not try to double buffer invalid areas.

- QCanvasEllipse

	Windows only: Workaround a Windows limitation that does not

	support 2x2 ellipse rendering without a pen. Do not try to

	double buffer invalid areas.

- QColorDialog

	Allow the setting of all 48 standard colors.

- QComboBox

	Close any popup menus or listboxes when disabling the combobox.

	Fix text alignment when large pixmaps were inserted into the

	combobox.

- QComplexText

	Added correct positioning specs for all of Thai and Lao. Some

	reordering fixes.

- QCursor

	Mac only: Correct interpretation of mask/data of a QCursor so that the

	mask will can be used as documented.

- QDate

	Fixed addYears() for days missing in certain years.

- QDateTimeEdit

	Compute an improved layout for the QDateEdit and QTimeEdit

	components of the QDateTimeEdit (based on the size hints). Set

	the size policy of the QDateTimeEdit to (Minimum, Fixed).

	In time edit: If the display is AM/PM, do not accept 13-24 as

	valid input for the hours. Go to the min/max value when

	stepping down/up goes out of the valid range.

- QDesktopWidget

	Mac only: Fixes to availableGeometry().

- QDialog

	Fixed a visibility issue with setExtension().

	X11 only: Modal dialogs that have no parent set their

	WM_TRANSIENT_FOR hint to the main application widget (not

	root). Do not raise the active modal widget if another one

	gets focus. This used to be an incorrect workaround for a

	now-obsolete problem where CDE would not keep modal dialogs

	above their parents. 

	Do not reposition laid out dialogs that restore their geometry

	in a polish() reimplementation.

- QDict

	Handle zero sized hash tables.

- QDns

	Slightly more reliable now, fixed a memory leak.

- QDockArea

	Fixed resizing of a QDockWindow is no longer affected by

	another closed QDockWindow in the same QDockArea. If a QDockWindow

	has changed its sizeHint layout items use now the new size.

- QDockWindow

	When undocking a window, use the last undocked size if we have

	one.

	X11 only: Make sure the moving frame is drawn on the correct screen.

	Windows only: Fixed some focus issues.

- QDom

	Create entity references for unknown entities.

- QDragManager

	X11 only: Raise cursor decoration. Improved Motif drop support

	to support non-textual data.

	Windows only: Do not send any drag events if we don't have a receiver.

	Windows 2000 only: Ignore illegal requests for error-clipboard

	format when dropping files onto Explorer.

- QEventLoop

	Window only: Fixed mutex lock problem. Fixed processEvents()

	with ExcludeUserInput. Fixed QSocketNotifiers not being

	removed when the notifier gets deleted and the event

	loop is blocking.

	Unix only: Fixed a 64 bit problem.

	Mac only: Fixed hasPendingEvents() for non-gui apps.

- QFileDialog

	Fix drag'n'drop for the first click into the listbox. Do not

	auto-complete when saving a file. Enabled drag'n'drop of files

	for all modes. In Directory* mode, do not set the filter to a

	non-existent directory if one is specified.

	Windows only: Fixed icon lookup.

	Win 98/Me only: Make sure getExistingDirectory() doesn't

	modify the current directory.

	Mac only: Encoding fixes.

- QFont

	Win95 only: Make symbol fonts work.

	X11 only: Don't change the Xft enabled/disabled setting

	at runtime. Avoid some X server roundtrips when loading fonts.

- QFontDialog

	Fixed getFont() in case no default font is specified.

- QFrame

	Turn on focus and mouse-over style flags for frame painting.

- QFtp

	If the server does not expect a password (i.e. if you are

	already logged in after you sent the username), do not send

	the password since this might lead to errors.

- QGLWidget

	X11 only: Xft fonts won't work with glXUseXFont() - so do not

	try to use them.

	Win32 only: Fixed text rendering to pixmap issues.

	Mac only: Improved responsiveness when resizing opengl widgets.

	Mac only: Optimized swapping between accelerated and

	non-accelerated case.

	Mac 10.2 only: Improved performance in the case of overlapping

	opengl widgets.

- QHBoxLayout

	Handle direction changes in user code.

- QHeader

	Improved sizeHint() takes the arrows of sorted columns

	into account. Fix redrawing problems when moving header

	sections. Ignore grip-margin in mouse handling for

	non-resizable sections.

- QHttp

	Fixed a memory leak. (With thanks to valgrind's developer for

	this useful tool). Improved head() implementation to actually

	use HEAD requests. Accepts responses from web servers that

	return \n instead of \r\n as line separators. Fixed a rare

	infinite loop issue.

- QIconView:

	Clip item drawing to current container to fix drawing of

	pixmaps with alpha channels.

- QImageIO

	jpegio: Fixed potential buffer overrun.

	gif: Fixed a crash for invalid gif files.

- QInputContext

	X11 only: Try harder to provide the input method with an

	appropriate - and available - fontset.

- QInputDialog

	Fixed size hint when using height-for-width rich text.

- QKeySequence

	Fixed operator==() for some special cases.

- QLabel

	When the the label is disabled, use identical color roles for both

	rich text and plain text.

- QLibrary

	Mac only: Return failure response when a library cannot be opened

	due to missing symbols.

- QLineEdit

	Do not truncate the text when we validateAndSet a text which

	is longer than maxLength, but disallow the input. Respect

	maxLength() in setText(). Make displayText() and selectedText()

	not strip non-breaking spaces anymore. Fixed memory leak when

	adding and deleting line edits. Undo now clears the current

	selection. Undo/redo now works when overwriting the selection.

	Fixed memory leak on constructing/destructing line edits. Give

	line edit ownership of the popup menu returned by the default

	createPopupMenu() implementation.

- QListView 

	Fixed background brush origin when using double buffering. Do

	not resize a stretchable column in widthChanged(). Fixed

	selecting when auto-scrolling. Initialize multi-selection

	anchor. Accept drops outside items when acceptDrops() is true.

	Use anchor correctly in Extended selection mode (also for

	mouseMove). Make right clicking on a selected item not change

	the selection. The AlignHCenter flag of a QCheckListItem now

	behaves like for normal QListViewItems. Speed up opening and

	closing of invisible items. Fixed a memory leak in removeColumn()

	Single selection mode: If the selected item is taken out of the 

	listview, unselect it and emit selectionChanged(). Fixed

	deselecting in multi-selection modes. Right release outside an

	item in a listview no longer clears the selection if

	ControlButton is set.

- QListViewItem

	Invalidate column sorting in moveToJustAfter().

- QLocalFs

	The network protocol for local file systems sets sets the

	right permissions for the QUrlInfo objects if you do a

	QUrlOperator::listChildren().

- QMainWindow

	Fixed orientation handler calls.

- QMap

	Fixed conversion from std::map.

- QMenuBar

	Mac only: Fix for destruction of menu bars.

	Mac only: Use process name instead of argv.

- QObject

	Always emit the destroyed() signal, even when signals are

	blocked.

- QPaintDevice

	Mac only: Fixed raster op. for bitBlt.

- QPainter

	X11 only: Fix for rotated rectangles. Fixed drawPolygon() with

	winding being false.

	Mac only: drawText() fixes.

	Mac only: Fix for drawPie().

- QPicture

	Warn about and catch save operations on still active devices.

- QPixmap

	Made grabWidget() more robust. 

	X11 only: Fixed a bug in grabWindow(), fixes in 

	convertFromImage() for MonoOnly.

- QPointArray

	The makeArc() function is now inclusive in respect of the start and

	end points.

- QPopupMenu

	If there is a custom QWhatsThis installed for the whole menu

	but no whatsThis set for the item, use the custom QWhatsThis

	to get the help text. Improved size for multi-column popups.

	Mac only: Improved scrollable popups

	Mac only: Fix handling of popupmenu dismissing mouse presses.

- QPrintDialog

	Fix reentrancy issues when reading printer dialog settings.

	Windows only: Handle lack of default printers more

	gracefully.

- QPrinter

	Windows only: Fix reentrancy issues and make sure that all

	handles are updated correctly. Improved bottom and right

	margin calculation. Fixed some problems with image printing.

	Mac only: Support for high resolution printing. Support 1-bit

	masking for pixmaps.

- QProcess

	If the process's file descriptor is closed for stdout or

	stderr, but the line in the buffer does not end with a \n or

	\r\n, it is still possible to read this data using readLine().

	Windows only: Make it safe to call qApp->processEvents() in a

	slot connected to QProcess::readyReadStdout(). Fixed start()

	with no arguments. Use a non-blocking file descriptor for

	writes to stdin. Avoid leaking of handles.

- QPSPrinter

	Fixed codec for Korean PostScript fonts (ksc5601.1987-0, not

	the listbox. Do not auto-complete when saving a

	fileeucKR). Fixed memory leak.

- QRichText

	Improved Asian line breaking: Avoid breaking before

	punctuation and closing braces and after opening braces. Fixed

	a freed memory access problem with floating items on

	destruction. When copying rich application/x-qrichtext, include

	format information for the initial characters until the first

	complete span. Make text="color" attributes in qt and body

	tags work again.

- QScrollView

	Restored the Qt 3 default sizeHint() that depends on the

	scroll view's content, restricted within a 'sane' range (this

	has no impact on most child classes, which already reimplement

	sizeHint()).

- QSemaphore

	Fixed race condition in operator-=().

	Unix only: A bit more robust.

- QSettings

	Implement scoping for file-based settings (Unix and

	Ini-modes). Support storing and reading null strings. Other

	fixes.

	X11 only: Fixed rehash issues when using multiple screens.

	Windows and Mac: Completed Ini mode.

- QSocket

	If the read retruns 0, safely assume that the peer closed the

	connection. Fixed readyRead sometimes not being

	emitted. Fixed a select bug when the other end terminates

	the connection. Some 64 bit fixes.

- QSound

	Mac only: Implemented stop().

- QSplitter

	Make sizes() return 0 for collapsed widgets.

- QSqlDriver

	All drivers: Fixed crashes when accessing out of bound

	fields. Clear the openError() flag when opening a connection

	successfully.

	MySQL only: Make use of mysql_use_result() in forward-only mode.

	TDS only: Return NULL QVariants for NULL fields.

	ODBC only: Do not require the SERVER keyword to be in a

	connection string. Fix Unicode issues with MS Access. Allow 

	MS Access people to create a connection string without 

	creating a DSN entry first.

- QSqlQuery

	Real values in queries containing placeholders were in some

	cases incorrectly replaced in emulated prepared queries.

	Added support for forward only queries in MySQL.

- QStatusBar

	Make sure QStatusBar updates the minimum height when a child

	widget triggers a relayout (e.g. from size/font/etc. changes).

- QString

	Safer QString->std::string conversion (handles null-string

	case). Fixed 64-bit issue in toLong() and toULong(). Make

	prepend(), append() and operator+=() work with a QByteArray

	argument that is not 0-terminated. Since this

	fix is done in inline functions, you must recompile your

	application to benefit from it. Make QString(const

	QByteArray&) respect the array's size where a codec for

	C strings is defined. Performance improvements for lower() 

	and upper(). Fix toDouble() when string contains trailing

	whitespace.

- QSvgDevice

	No background for Bezier curves. Fixed omission of font-family

	attribute in SVG generator. Fixed bounding rect mapping.

- QStyle (and subclasses)

	Usable size for subcontrols for small scrollbars. Fixed MDI

	document window titlebar clipping.

	XP style: Support non-default group boxes. Corrected tab

	widget border drawing. More compliant dock window

	appearance. Fixed translations for QCheckTableItem and

	QComboTableItem.

	Windows style: Use the highlighted text color role for arrows

	in menus. Allow drawing of list view expand controls without

	branches.

	SGI style: Use correct background brush on pushbuttons with

	popdown arrows.

	Mac style (Mac only): Comboboxes will now be smaller (and closer to

	Aqua Style suggested sizes). Expansion widgets (in a listview) will

	now draw in the correct background color to allow non-white listviews.

- QSpinBox

	Stop spinning when users press a button other than the

	left one. Support Key_Enter in addition to Key_Return as the

	documentation always stated.

- QTabBar

	Let arrow buttons react correctly on style changes.

- QTabDialog

	Fix reverse layout for right to left languages.

- QTable

	Catch hideColumn() on tables with too few columns. Fixed an

	endless recursion when swapping header sections. Fixed SingleRow

	selection when using the vertical header. Emit the

	sizeChange() signal when resizing a table header section with

	a double click. Fixed set*MovingEnabled() when the selection

	mode is NoSelection. Fix selection drawing for focusStyle ==

	FollowFocus. Fixed a memory leak.

- QTableItem

	Use virtual text() method for calculations instead of accessing the

	data member directly. Do not crash when destroying a table item that

	is not in a table.

- QTextCodec:

	Fixed a bug in the Unicode -> jisx0208 conversion table.

- QTextEdit

	Made setFormat() much faster when undo/redo is

	disabled. Fixed double deletion crash when clearing a document

	with floating custom items. AccelOverride events with Shift

	pressed now work the same as for a normal key press.

	LogText mode: Allow spaces in the font color tag. Fixed

	background redraw issue. Stop scrollbar from disappearing

	due to laying out the document incorrectly.

- QThread

	Unix only: Do not rely on PTHREAD_MUTEX_INITIALIZER and

	PTHREAD_COND_INITIALIZER. Fixed timeout calculation in

	sleep().

- QTimeEdit

	Typing in input for the first time now overwrites the existing

	value.

- QToolButton

	Fixed width calculation for multiline text.

- QTooltip

	Try hard to avoid tooltips for widgets in inactive

	windows. Use screen geometry rather than available geometry

	for positioning. Avoid the mouse cursor covering part of the

	tooltip.

- QTranslator

	Notify main windows when installing an empty translator.

- QUrlOperator

	Make setNameFilter() work with FTP.

- QValueVector

	Fix operator==() to work as expected if the two vectors do not have

	the same size.

- QVariant

	Fixed canCast() for Bool -> String and ByteArray -> String conversion. 

	Fixed operator==() for maps. Fixed the asDouble() function to

	detach first before a conversion is done. After streaming into

	a QVariant isNull() now returns false.

- QWaitCondition

	Unix only: Make sure the mutex is destroyed after it is

	unlocked.

- QWhatsThis

	Use screen geometry rather than available geometry

	for positioning.

- QWidget

	In adjustSize(), process LayoutHint events for all widgets,

	not only this widget. Fixed a visibility issue with

	reparent(). Fixed recursive update of child widgets with

	background origin not being WidgetOrigin. Fixed isEnabledTo().