Qt 3.1 introduces many significant new features and many improvements

over the 3.0.x series. For an overview of the main changes between

3.0.x and 3.1, look at the changes-3.1.0-b1 file. This file describes

the changes between Qt 3.1 beta1 and Qt 3.1 beta2.

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*			    General					   *

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The binary incompatibilities that were introduced in Qt 3.1 beta1

have been fixed.

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*			   Library					   *

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- QAction

	Don't update when nothing has changed.

- QActionGroup

	Syncronize comboboxes correctly for groups with

	separators. Set the initial currentItem of comboboxes to the

	action that is on when adding the group. Emit activated signal

	for non-toggle actions selected from a combobox. Apply the

	state of the action group for new widgets.

- QApplication

	Correctly set the accept() flag on accel events. Obsoleted

	processOneEvent(), we have a better way for integrating

	eventloops now. (See QEventLoop's documentation.)

	Windows only: reserve more space for very long application

	filenames.

- QCheckTableItem

	Use the colorgroup passed in for the background color and not

	the viewport's.

- QColor

	Windows only: Fix palette allocation and ManyColor mode on

	Windows.

- QComboBox

	Emit activated() signals from the wheel event handler.

- QComboTableItem

	Make sure stringlist is updated even if setStringList() is

	called while an editor exists.

- QDataTable

	Windows only: If edit confirmation was switched on and

	the user cancelled an update by clicking in a different field,

	the current row was needlessly changed.

- QDateTimeEdit/QTimeEdit

	Now supports wraparound for time editing.

- QDesktopWidget

	Windows only: Allow explicit creation of QDesktopWidgets.

- QDns

	Fix a crash when a QDns object is deleted in a slot connected

	to its resultsReady() signal.

- QDockWindow

	Windows only: Don't pass window activation around

	unnecessarily when the activation is ignored anyway. Also

	fixed repaint errors while dragging dock windows. Remove

	floating windows from the mainwindow's internal lists when

	deleting.

- QEventLoop

	Renamed processNextEvent(flags,bool) to processEvents(flags)

	and introduced new ProcessEvents flag, WaitForMore. Remove

	processOneEvent since it is redundant.

- QFileDialog

	Windows only: Disable NTFS permission lookup during filedialog

	population. This can take a long time, and the information is

	not really required.

- QGLContext

	Added a workaround to get overlays to work on ATi FireGL

	cards.

- QGLWidget

	Added support for rendering text into a GL context with the

	renderText() calls.

- QHeader

	Draw the sort arrow at the right position with multi-line

	header labels. Scale the correct sections when the header

	sections are reordered. Respect orientation() in sizeHint().

- qHeapSort()

	Fixed to only require operator<, instead of a mix of

	operator<, <=, and >.

- QIconView

	Optimize updates on focus/window activation changes.

- QLibrary

	Windows only: only append ".dll" extension if no extension has

	been provided.

- QListBox

	Don't call ensureCurrentVisible() in resizeEvent() unless the

	current item was visible when you started resizing.

- QListView

	Don't draw the cell if the cell wouldn't be visible due to

	having a width or height of 0. Don't call cancelRename() when

	the rename was OK'd. When showing a tooltip make sure it's

	only for that column and not for the whole item.

- QMacStyle

	Many improvements to follow the native style more closely.

- QMainWindow

	Close all floating dockwindows of the mainwindow in the close

	event.

- QMenuData

	Make removeItem(int id) work on trees like the other functions

	that take IDs as arguments.

- QObject

	Make sender() a safer function to use:

	- it cannot be dangling anymore (points to 0 if the sender was

	  deleted or disconnected)

	- it maintains its value after other signals have been emitted

	Fixed compatibility problem in connect(). Remove quadratic

	behaviour in insertChild()

- QPicture

	Proper streaming for null pictures.

- QPixmap

	X11 only: allow grabWindow() to work on a screen other than

	the default screen.

- QPopupMenu

	Draw submenu items disabled if the submenu is disabled. Fix

	null-pointer dereferencing for dynamically changing menus.

- QProcess

	Windows only: make the tryTerminate() function work for

	windows applications (it still does not work for

	consoleapplications, though).

- QSocket

	Don't crash if the readBlock() returned 0.

- QSplitter

	addWidget() now reparents the widget if necessary.

- QTable

	Set the table of the item to the table in insertItem(), so

	takeItem()/insertItem() can be used to move items between

	tables.

- QWidget

	Clear WDestructiveClose before calling deleteLater() on

	widgets. Event processing during destruction might otherwise

	have another close event come along, which would issue another

	deleteLater() call. Added a new function toggleShowHide(bool show).

	Simplified visible() handling and added a convenience property

	"shown" and a write function for "hidden". Save WFlags in

	showFullScreen() and restore them so flags are remembered

	correctly.

- QWindowsStyle

	Make the Windowsstyle obey the system's scrollbar widths.

- qUncompress()

	Don't hang forever if the expected size passed in is 0. Return

	an empty bytearray if something went wrong instead of garbage

	data.

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*			   Qt Designer					   *

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- Improved the look of the Toolbox

- Many small usibility improvements in the special editors for widgets

  (drag'n'drop, in-place renaming, etc.).

- New icon look.

- Accept class names with "::" and generate correct namespace code in

  uic.

- Reduced startup time.

- Fixed a crash when loading .ui files using QWidgetFactory.

- Cleaned up some old dialogs and removed obsolete settings.

- Improved the .dlg import plugin.

- Button text properties can be edited in a multi-line editor now,

  since all buttons support multi-line labels.

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*			   Qt Assistant					   *

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- Added commandline option -removeContentFile.

- New icon look.

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*			   Qt Linguist					   *

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- New icon look.