Qt 3.0 Beta3 is not binary compatible with Beta2, this means that any+
−
programs linked with Beta2 must be recompiled.+
−
+
−
Below you'll find a description of general changes in the Qt Library+
−
and Qt Designer followed by a detailed list of changes in the+
−
programming API.+
−
+
−
+
−
The Qt Library+
−
========================================+
−
+
−
Documentation+
−
-------------+
−
+
−
Overall enhancements include fixed typos, corrected grammar and+
−
spelling, and the addition of several images and code examples. Most+
−
classes now have useful detailed descriptions. Documentation accuracy+
−
and usability has been generally improved.+
−
+
−
Styles+
−
------+
−
+
−
In Qt 3.0.0 Beta2, only the Windows and Motif styles were implemented with+
−
the new style API. Now the missing styles (MotifPlus, Platinum, SGI and+
−
CDE) are included.+
−
+
−
MNG+
−
---+
−
+
−
Updated the libmng that is shipped with Qt to version 1.0.2.+
−
+
−
Wacom Tablet Support+
−
--------------------+
−
+
−
Fixes for Windows to solve the problem of creating a context for every+
−
widget and the problem of opening the dialog and losing the ability to use+
−
the tablet afterwards.+
−
+
−
+
−
Qt Designer+
−
========================================+
−
+
−
 - Added the ability to sort the property editor either by category+
−
   (default and old behaviour) or alphabetically.+
−
+
−
 - Added the option "-nofwd" to uic which supresses the generation of+
−
   forward declarations for custom classes in the generated output.+
−
+
−
-  The way how custom slots and editing these slots directly in the Qt+
−
   Designer is handled has been changed. Originally the code for these+
−
   slots was saved into the .ui XML file together with the user+
−
   interface description and the uic did put this code into the+
−
   generated source files.+
−
   Now, if code of custom slots is edited directly in the Qt Designer,+
−
   additionally to the <filename>.ui of a form, a <filename>.ui.h file+
−
   is created. The code is written into this source file now instead+
−
   of the .ui file.+
−
   This way the code of custom slots can be also easily edited outside+
−
   the Qt Designer without subclassing, and it is possible to edit it+
−
   both, in the Qt Designer and outside the Qt Designer without+
−
   conflicts, as this is a plain text C++ file.+
−
   Uic now automatically includes this source file into the generated+
−
   sources (if it exists) and, in this case, does not create empty+
−
   stubs for the custom slots in the generated sources anymore. So+
−
   this code file has not to be added to the project Makefile. If the+
−
   source file does not exist, uic falls back to the old behavior and+
−
   creates the empty stubs in the generated source.+
−
   If a user does not want to subclass to implement the custom slots,+
−
   but also does not want to edit the code of the custom slots in the+
−
   Qt Designer, it is possible to always create the <formname>.ui.h+
−
   for a form (even if it was not edited in the Qt Designer) and edit+
−
   that file in a seperate editor. This feature can be configured in+
−
   the project settings dialog.+
−
   This way, the old approach of subclassing keeps working (and all+
−
   old .ui files keep working without any change). Also, for users of+
−
   the previous Qt 3.0 Beta versions, Qt Designer can still read the+
−
   .ui files which contain code. So also .ui files created with Qt 3.0+
−
   Beta versions of the Qt Designer keep working without any change.+
−
   Details about the possible concepts which can be used to add code+
−
   to a form created by the Qt Designer (subclassing and uic ++
−
   <filename>.ui.h) and related information about project management+
−
   can be found in the chapter about new features in Qt Designer 3.0+
−
   in the Qt Designer manual.+
−
+
−
+
−
Qt Functions+
−
========================================+
−
+
−
QApplication+
−
------------+
−
+
−
 - flush() no longer calls sendPostedEvents(), as this might be unsafe+
−
   under certain circumstances.+
−
+
−
QDataTable+
−
----------+
−
+
−
 - Now uses the new row selection mode of QTable.+
−
+
−
QDomDocument+
−
------------+
−
+
−
 - Fixed the toString() function to work properly with namespaces.+
−
 - In Qt 3.0.0 Beta2, there was a workaround for Microsoft's XML parser,+
−
   so that the toString() function did not output a doctype that consists+
−
   only of the name. This workaround is semantically wrong; it was+
−
   reverted.+
−
+
−
QDateEdit+
−
---------+
−
+
−
 - Fixed wrong default size policy and missing size hint.+
−
 - Improved focus and tab handling.+
−
+
−
QEffects+
−
--------+
−
+
−
 - Tooltips and popup menus scroll and fade again+
−
+
−
QTable+
−
------+
−
+
−
 - Fixed right mouse button handling.+
−
 - Implemented row selection modes. This implied adding the new enum values+
−
   SingleRow and MultiRow to the enum SelectionMode.+
−
 - Doubleclick clears selections completely now.+
−
 - Allow different focus styles, namely FollowStyle (draw it as the style+
−
   tells you) and SpreadSheet (draw it as it is done in common spreadsheet+
−
   programs).+
−
+
−
New functions:+
−
	virtual void setFocusStyle( FocusStyle fs );+
−
	FocusStyle focusStyle() const;+
−
	virtual QRect cellRect( int row, int col ) const;+
−
+
−
QTimeEdit+
−
---------+
−
+
−
 - Fixed wrong default size policy and missing size hint.+
−
 - Improved focus and tab handling.+
−
+
−
QTextEdit+
−
---------+
−
+
−
 - QTextCursor is an internal class, so the signal+
−
   cursorPositionChanged(QTextCursor*) is only of limited use. Added a+
−
   more useful signal in addition.+
−
+
−
 - Overrides accelerators for all shortcuts used to edit text.+
−
+
−
New signal:+
−
	void cursorPositionChanged( int para, int pos );+
−
+
−
QLineEdit+
−
---------+
−
+
−
 - Overrides accelerators for all shortcuts used to edit text.+
−
+
−
QLibrary+
−
--------+
−
+
−
 - Static overload for resolve as a convenience function.+
−
+
−
New function:+
−
	static void *resolve( const QString &filename, const char * );+
−
+
−
QListView+
−
---------+
−
+
−
 - A bug that was introduced in Qt 3.0.0 beta 2 made listviews with+
−
   lots of items very slow. This problem has been fixed.+
−
+
−
QProcess+
−
--------+
−
+
−
 - exitStatus() did not work for negative values on Unix. This is fixed+
−
   now.+
−
 - Fixed problems on Unixware.+
−
+
−
QRichtext+
−
---------+
−
+
−
 - Fixed searching backwards.+
−
 - Fixed some BIDI text-rendering problems.+
−
+
−
QSound+
−
------+
−
+
−
 - Simplified the API to allow easier extension.+
−
+
−
New functions:+
−
	bool isAvailable();+
−
	int loops() const;+
−
	int loopsRemaining() const;+
−
	void setLoops(int);+
−
	QString fileName() const;+
−
	bool isFinished() const;+
−
+
−
New slot:+
−
	void stop();+
−
+
−
Removed function:+
−
	bool available();+
−
+
−
QSpinBox+
−
--------+
−
+
−
 - Spin box arrows were not updated correctly when the widget was+
−
   disabled/enabled. This problem is fixed now.+
−
 - Improved handling of the case when a spinbox accepts a value: now it+
−
   also accepts it if the spinbox loses focus or is hidden.+
−
+
−
QSqlCursor+
−
----------+
−
+
−
 - Add functions to set the generated flag. This is used to avoid the+
−
   generation of malformed SQL statements.+
−
+
−
New functions:+
−
	void setGenerated( const QString& name, bool generated );+
−
	void setGenerated( int i, bool generated );+
−
+
−
QSqlDriver+
−
----------+
−
+
−
 - Add new function hasFeature( QSqlDriver::DriverFeature ) const which+
−
   allows you to query whether the driver supports features like SQL+
−
   transactions or Binary Large Object fields. The functions+
−
   hasQuerySizeSupport(), canEditBinaryFields() and hasTransactionSupport()+
−
   are therefore obsolete and have been removed.+
−
+
−
New function:+
−
	bool hasFeature( QSqlDriver::DriverFeature ) const;+
−
+
−
Removed functions:+
−
	bool hasQuerySizeSupport() const;+
−
	bool canEditBinaryFields() const;+
−
	bool hasTransactionSupport() const;+
−
+
−
QSqlField+
−
---------+
−
+
−
 - The bool argument of setNull() was removed since it does not make sense+
−
   to set a field to non null.+
−
+
−
QTabWidget+
−
----------+
−
+
−
 - Use the functions below to add tool tips to the individual tabs in a+
−
   QTabWidget.+
−
+
−
New functions:+
−
	void removeTabToolTip( QWidget * w );+
−
	void setTabToolTip( QWidget * w, const QString & tip );+
−
	QString tabToolTip( QWidget * w ) const;+
−
+
−
QTabBar+
−
-------+
−
+
−
 - Use the functions below to add tool tips to the individual tabs in a+
−
   QTabBar.+
−
+
−
New functions:+
−
	void removeToolTip( int id );+
−
	void setToolTip( int id, const QString & tip );+
−
	QString toolTip( int id ) const;+
−
+
−
QTextStream+
−
-----------+
−
+
−
 - The global functions setw(), setfill() and setprecison() were deleted+
−
   since they conflict with the std classes. If you need the functionality,+
−
   use qSetW(), qSetFill() and qSetPrecision() instead.+
−
+
−
Removed functions:+
−
	QTSManip setw( int w )+
−
	QTSManip setfill( int f )+
−
	QTSManip setprecision( int p )+
−