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