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966 lines
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966 lines
45 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>Porting to TQt 2.x</title>
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<font color="#004faf">Home</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Porting to TQt 2.x</h1>
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<p> <p>
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You're probably looking at this page because you want to port
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your application from TQt 1.x to TQt 2.x, but to be sure, let's
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review the good reasons to do this:
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<ul>
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<li>To get access to all the new TQt 2.x features like the rich text
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HTML subset for formatted labels, tooltips, online help etc.
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and the much easier to use layout classes and widgets.
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<li>To make your application truly international, with support
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for Unicode and translations for the languages of the world.
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<li>To allow your application to fit into the new look of the
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Unix desktop with configurable, very powerful "themes". The
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extended style system also integrates TQt applications better
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on MS-Windows desktops. TQt will automatically chose the right
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colors and fonts and obey global system setting changes.
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<li>To stay up-to-date with the version of TQt that gets all the
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new features and bug-fixes.
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<li>To get more speed and smoother widgets display with all the
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new anti-flicker changes in TQt.
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<li>Most of all though, you want to port to TQt 2.x
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so that your Wheel Mouse works!
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</ul>
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<p> <p>
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The TQt 2.x series is not binary compatible with the 1.x series.
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This means programs compiled for TQt 1.x must be recompiled to work
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with TQt 2.x. TQt 2.x is also not completely <em>source</em> compatible
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with 1.x, however all points of incompatibility cause
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compiler errors (rather than mysterious results), or produce run-time
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messages. The result is that TQt 2.x includes many additional features,
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discards obsolete functionality that is easily converted to use the new
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features, and that porting an application from TQt 1.x to TQt 2.x is
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a simple task well worth the amount of effort required.
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<p> To port code using TQt 1.x to use TQt 2.x:
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<p> <ul>
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<li> Briefly read the porting notes below to get an idea of what to expect.
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<li> Be sure your code compiles and runs well on all your target platforms with TQt 1.x.
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<li> Recompile with TQt 2.x. For each error, search below for related
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identifiers (eg. function names, class names) - this documented is
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structured to mention all relevant identifiers to facilitate such
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searching, even if that makes it a little verbose.
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<li> If you get stuck, ask on the qt-interest mailing list, or
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Trolltech Technical Support if you're a Professional Edition
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licensee.
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</ul>
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<p> Many very major projects, such as <a href="http://www.kde.org/">KDE</a>
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have been port, so there is plenty of expertise in the collective conscious
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that is the TQt Developer Community!
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</p>
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<p> <hr>
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<p> <h2 align=center>The Porting Notes</h2>
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<p> <ul>
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<li><b><a href="#Namespace">Namespace</a></b>
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<li><b><a href="#Virtual">Virtual Functions</a></b>
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<li><b><a href="#Collection">Collection classes</a></b>
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<li><b><a href="#DefaultParent">No Default 0 Parent Widget</a></b>
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<li><b><a href="#DebugVsRelease">Debug vs. Release</a></b>
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<li><b><a href="#TQApplication">TQApplication</a></b>
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<li><b><a href="#TQClipboard">TQClipboard</a></b>
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<li><b><a href="#TQColor">TQColor</a></b>
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<li><b><a href="#TQDataStream">TQDataStream</a></b>
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<li><b><a href="#TQDialog">TQDialog</a></b>
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<li><b><a href="#TQDropSite">TQDropSite</a></b>
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<li><b><a href="#TQEvent">TQEvent</a></b>
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<li><b><a href="#TQFile">TQFile</a></b>
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<li><b><a href="#TQFontMetrics">TQFontMetrics</a></b>
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<li><b><a href="#TQIODevice">TQIODevice</a></b>
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<li><b><a href="#TQLabel">TQLabel</a></b>
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<li><b><a href="#TQLayout">TQLayout</a></b>
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<li><b><a href="#TQListView">TQListView</a></b>
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<li><b><a href="#TQMenuData">TQMenuData</a></b>
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<li><b><a href="#TQMenuData">TQPopupMenu</a></b>
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<li><b><a href="#TQMultiLineEdit">TQMultiLineEdit</a></b>
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<li><b><a href="#TQPainter">TQPainter</a></b>
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<li><b><a href="#TQPicture">TQPicture</a></b>
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<li><b><a href="#TQPoint">TQPoint, <a href="ntqpointarray.html">TQPointArray</a>, <a href="ntqsize.html">TQSize</a> and <a href="ntqrect.html">TQRect</a></a></b>
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<li><b><a href="#TQPixmap">TQPixmap</a></b>
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<li><b><a href="#TQRgb">TQRgb</a></b>
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<li><b><a href="#TQScrollView">TQScrollView</a></b>
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<li><b><a href="#TQStrList">TQStrList</a></b>
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<li><b><a href="#TQString">TQString</a></b>
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<li><b><a href="#TQTextStream">TQTextStream</a></b>
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<li><b><a href="#TQUriDrag">TQUriDrag / TQUrlDrag</a></b>
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<li><b><a href="#TQValidator">TQComboBox</a></b>
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<li><b><a href="#TQValidator">TQLineEdit</a></b>
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<li><b><a href="#TQValidator">TQSpinBox</a></b>
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<li><b><a href="#TQValidator">TQValidator</a></b>
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<li><b><a href="#TQWidget">TQWidget</a></b>
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<li><b><a href="#TQWindow">TQWindow</a></b>
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</ul>
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<p> <hr>
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<p> <h3><a name="Namespace">Namespace</a></h3>
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<p> <p> TQt 2.x is namespace-clean, unlike 1.x. TQt now uses very few
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global identifiers. Identifiers like <code>red, blue, LeftButton,
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AlignRight, Key_Up, Key_Down, NoBrush</code> etc. are now part of a
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special class <code>TQt</code> (defined in ntqnamespace.h),
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which is inherited by
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most TQt classes. Member functions of classes that inherit from <a href="ntqwidget.html">TQWidget</a>,
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etc. are totally unaffected, but code that is
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<em>not</em> in functions of classes inherited from <code>TQt</code>,
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you must qualify these identifiers like this: <code>TQt::red,
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TQt::LeftButton, TQt::AlignRight</code>, etc.
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<p> <p>The <code>qt/bin/tqt20fix</code> script helps to fix the code that
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needs adaption, though most code does not need changing.
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<p> Compiling with -DQT1COMPATIBILITY will help you get going with TQt 2.x
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- it allows all the old "dirty namespace" identifiers from TQt 1.x to
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continue working. Without it, you'll get compile errors that can
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easily be fixed by searching this page for the clean identifiers.
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<p> <h3><a name="DefaultParent">No Default 0 Parent Widget</a></h3>
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<p> In TQt 1.x, all widget constructors were defined with a default value
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of 0 for the parent widget. However, only the main window of the
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application should be created with a 0 parent, all other widgets
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should have parents. Having the 0 default made it too simple to create
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bugs by forgetting to specify the parent of non-mainwindow
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widgets. Such widgets would typically never be deleted (causing memory
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leaks), and they would become top-level widgets, confusing the window
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managers. Therefore, in TQt 2.x the 0 default parent has been removed
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for the widget classes that are not likely to be used as main windows.
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<p> Note also that programs no longer need (or should) use 0 parent just
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to indicate that a widget should be top-level. See
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<pre> TQWidget::isTopLevel() </pre>
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for details. See also the notes about
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<a href="#TQMenuData">TQPopupMenu</a> and <a href="#TQDialog">TQDialog</a>
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below.
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<p> <h3><a name="Virtual">Virtual Functions</a></h3>
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<p> <p> Some virtual functions have changed signature in TQt 2.x.
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If you override them in derived classes, you must change the signature
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of your functions accordingly.
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<p> <!-- warwick can check for additions to this with his qt-2-report -->
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<ul>
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<li><pre> TQWidget::setStyle(GUIStyle)</pre>
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<li><pre> TQListView::addColumn(const char *, int)</pre>
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<li><pre> TQListView::setColumnText(int, const char *)</pre>
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<li><pre> TQListViewItem::setText(int, const char *)</pre>
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<li><pre> TQMultiLineEdit::insertLine(const char *, int)</pre>
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<li><pre> TQMultiLineEdit::insertAt(const char *, int, int, bool)</pre>
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<li><pre> TQSpinBox::setPrefix(const char *)</pre>
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<li><pre> TQSpinBox::setSuffix(const char *)</pre>
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<li><pre> TQToolButton::setTextLabel(const char *, bool)</pre>
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<li><pre> TQDoubleValidator::validate(TQString &, int &)</pre>
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<li><pre> TQIntValidator::validate(TQString &, int &)</pre>
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<li><pre> TQValidator::fixup(TQString &)</pre>
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<li><pre> TQSlider::paintSlider(TQPainter *, const <a href="ntqrect.html">TQRect</a> &)</pre>
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</ul>
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<p> This is one class of changes that are
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not detected by the compiler,
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so you should mechanically search for each of
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these function names in your header files, eg.
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<p> <pre>
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egrep -w 'setStyle|addColumn|setColumnText|setText...' *.h
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</pre>
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<p> Of course, you'll get a few false positives (eg. if you have a setText
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function that is not in a subclass of <a href="qlistviewitem.html">TQListViewItem</a>).
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<p> <h3><a name="Collection">Collection classes</a></h3>
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<p> <p> The <a href="collection.html#collection-classes">collection classes</a> include generic
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classes such as TQGDict, TQGList, and
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the subclasses such as <a href="ntqdict.html">TQDict</a> and TQList.
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<p> <p> The macro-based TQt collection classes are obsolete; use the
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template-based classes instead. Simply remove includes of ntqgeneric.h and
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replace e.g. Q_DECLARE(<a href="ntqcache.html">TQCache</a>,TQPixmap) with TQCache<TQPixmap>.
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<p> <p> The GCI global typedef is replaced by TQCollection::Item. Only if you
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make your own subclasses of the undocumented generic collection classes
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will you have GCI in your code.
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This change has been made to avoid collisions with other namespaces.
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<p> <p> The GCF global typedef is removed (it was not used in TQt).
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<p> <h3><a name="DebugVsRelease">Debug vs. Release</a></h3>
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<p> <p>The Q_ASSERT macro is now a null expression if the QT_CHECK_STATE flag
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is not set (i.e. if the QT_NO_CHECK flag is defined).
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<p> <p>The debug() function now outputs nothing if TQt was compiled with
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the QT_NO_DEBUG macro defined.
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<p> <h3><a name="TQString">TQString</a></h3>
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<p> <a href="ntqstring.html">TQString</a> has undergone major changes internally, and although it is highly
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backward compatible, it is worth studying in detail when porting to TQt 2.x.
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The TQt 1.x TQString class has been renamed to <a href="ntqcstring.html">TQCString</a> in TQt 2.x, though if
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you use that you will incur a performance penalty since all TQt functions
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that took const char* now take const TQString&.
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<p> <p>
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To take full advantage of the new <a href="i18n.html#internationalization">Internationalization</a>
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functionality in TQt 2.x, the following steps are required:
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<p> <ul>
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<li> Start converting all uses of "const char*" in parameters to
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"const TQString&" - this can often be done mechanically, eg.
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using Perl. Convert usage of char[] for temporary string
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building to TQString (much software already uses TQString for
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this purpose as it offers many more facilities).
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<p> If you find that you are mixing usage of TQCString, TQString,
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and <a href="qbytearray.html">TQByteArray</a>, this causes lots of unnecessary copying and
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might indicate that the true nature of the data you are
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dealing with is uncertain. If the data is NUL-terminated
|
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8-bit data, use TQCString; if it is unterminated (ie.
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contains NULs) 8-bit data, use TQByteArray; if it is text,
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use <a href="ntqstring.html">TQString</a>.
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</p>
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<li> Put a breakpoint in <pre> TQString::latin1()</pre>
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to catch places where
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Unicode information is being converted to ASCII (loosing
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information if your user in not using Latin1). TQt has
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a small number of calls to this - ignore those. As a stricter
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alternative, compile your code with QT_NO_ASCII_CAST defined,
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which hides the automatic conversion of TQString to const char*,
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so you can catch problems at compile time.
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</p>
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<li> See the TQt <a href="i18n.html">Internationalization page</a>
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for information about the full process of internationalizing
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your software.
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</ul>
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<p> <p>
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Points to note about the new TQString are:
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<p> <dl compact>
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<dt><b>Unicode</b></dt>
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<dd>
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TQt now uses Unicode throughout.
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data() now returns a <em>const</em> reference to an ASCII version
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of the string - you cannot directly access the
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string as an array of bytes, because it isn't one. Often, latin1() is
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what you want rather than data(), or just leave it to convert to
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const char* automatically. data() is only used now to aide porting to TQt 2.x,
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and ideally you'll only need latin1() or implicit conversion when interfacing
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to facilities that do not have Unicode support.
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<p> <dt><b>Automatic-expanding</b></dt>
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<dd>
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A big advantage of the new <a href="ntqstring.html">TQString</a> is that it automatically expands
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when you write to an indexed position.
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<p> <dt><b>TQChar and <a href="qcharref.html">TQCharRef</a></b></dt>
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<dd>
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<a href="qchar.html">TQChar</a> are the Unicode characters that make up a TQString. A TQCharRef is
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a temporary reference to a TQChar in a TQString that when assigned to
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ensures that the <a href="shclass.html#implicit-sharing">implicit sharing</a> semantics of the TQString are maintained.
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You are unlikely to use TQCharRef in your own code - but so that you
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understand compiler error messages, just know that <tt>mystring[123]</tt>
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is a TQCharRef whenever <tt>mystring</tt> is not a constant string. A TQCharRef
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has basically the same functionality as a TQChar, except it is more restricted
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in what you can assign to it and cast it to (to avoid programming errors).
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<p> <dt><b>Use TQString</b></dt>
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<dd>
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Try to always use TQString. If you <em>must</em>, use <a href="ntqcstring.html">TQCString</a> which is the
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old implementation from TQt 1.x.
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<p> <dt><b>Unicode vs. ASCII</b></dt>
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<dd>
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Every conversion to and from ASCII is wasted time, so try to use <a href="ntqstring.html">TQString</a>
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as much as possible rather than const char*. This also ensures you have
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full 16-bit support.
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<p> <dt><b>Convertion to ASCII</b></dt>
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<dd>
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The return value from operator const char*() is transient - don't expect
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it to remain valid while you make deep function calls.
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It is valid for as long as you don't modify or destroy the TQString.
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<p> <dt><b>TQString is simpler</b></dt>
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<dd>
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Expect your code to become simpler with the new TQString, especially
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places where you have used a char* to wander over the string rather
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than using indexes into the string.
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<p> <dt><b>Some hacks don't work</b></dt>
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<dd>
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This hack:
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use_sub_string( &my_string[index] )
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should be replaced by:
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use_sub_string( my_string.mid(index) )
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<p> <dt><b>TQString(const char*, int) is removed</b></dt>
|
|
<dd>
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The TQString constructor taking a const char* and an integer is removed.
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|
Use of this constructor was error-prone, since the length included the
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'\0' terminator. Use <a href="ntqstring.html#left">TQString::left</a>(int) or <a href="ntqstring.html#fromLatin1">TQString::fromLatin1</a>( const char*,
|
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int ) -- in both cases the int parameter signifies the number of characters.
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|
<p> <dt><b>TQString(int) is private</b></dt>
|
|
<dd>
|
|
The <a href="ntqstring.html">TQString</a> constructor taking an integer is now private. This function
|
|
is not meaningful anymore, since TQString does all space allocation
|
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automatically. 99% of cases can simple be changed to use the
|
|
default constructor, TQString().
|
|
<p>
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|
In TQt 1.x the constructor was used in two ways: accidentally,
|
|
by attempting to convert a char to a TQString (the char converts to int!) -
|
|
giving strange bugs, and as a way to make a TQString big enough prior to
|
|
calling <pre> TQString::sprintf()</pre>
|
|
. In TQt 2.x, the accidental bug case is
|
|
prevented (you will get a compilation error) and TQString::sprintf has
|
|
been made safe - you no longer need to pre-allocate space (though for
|
|
other reasons, sprintf is still a poor choice - eg. it doesn't pass Unicode).
|
|
The only remaining common case is conversion of 0 (NULL) to TQString, which
|
|
would usually give expected results in TQt 1.x. For TQt 2.x the correct
|
|
syntax is to use <a href="ntqstring.html#TQString-null">TQString::null</a>, though note that
|
|
the default constructor, TQString(), creates a null string too.
|
|
Assignment of 0 to a <a href="ntqstring.html">TQString</a> is ambiguous - assign
|
|
TQString::null; you'll mainly find these in code that has been converted
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from const char* types to TQString.
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|
This also prevents a common error case from TQt 1.x - in
|
|
that version, mystr = 'X' would <em>not</em> produce the expected
|
|
results and was always a programming error; in TQt 2.x, it works - making
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a single-character string.
|
|
<p> <p>
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|
Also see <a href="#TQStrList">TQStrList</a>.
|
|
<p> <dt><b>Signals and Slots</b></dt>
|
|
<dd>
|
|
Many signal/slots have changed from const char* to TQString. You will
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get run-time errors when you try to <pre> TQObject::connect()</pre>
|
|
|
|
to the old
|
|
signals and slots, usually with a message indicating the const TQString&
|
|
replacement signal/slot.
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|
<p> <dt><b>Optimize with Q2HELPER</b></dt>
|
|
<dd>
|
|
In qt/src/tools/qstring.cpp there is a Q2HELPER - define it for some
|
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extra debugging/optimizing features (don't leave it it - it kills performance).
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|
You'll get an extra function, qt_qstring_stats(), which will print a
|
|
summary of how much your application is doing Unicode and ASCII
|
|
back-and-forth conversions.
|
|
<p> <dt><b>TQString::detach() is obsolete and removed</b></dt>
|
|
<dd>
|
|
Since <a href="ntqstring.html">TQString</a> is now always shared, this function does nothing.
|
|
Remove calls to TQString::detach().
|
|
<p> <dt><b>TQString::resize(int size) is obsolete and removed</b></dt>
|
|
<dd>
|
|
Code using this to truncate a string should use
|
|
<a href="ntqstring.html#truncate">truncate(size-1)</a>.
|
|
Code using qstr.resize(0) should use qstr = TQString::null.
|
|
Code calling resize(n) prior to using
|
|
<a href="ntqstring.html#operator[]">operator[]</a> up to n just remove
|
|
the resize(n) completely.
|
|
<p> <dt><b>TQString::size() is obsolete and removed</b></dt>
|
|
<dd>
|
|
Calls to this function must be replaced by
|
|
<a href="ntqstring.html#length">length()</a>+1.
|
|
<p> <dt><b>TQString::setStr(const char*) is removed</b></dt>
|
|
<dd>Try to understand why you were using this.
|
|
If you just meant assignment, use that. Otherwise,
|
|
you are probably using TQString as an array of bytes, in which case use
|
|
<a href="qbytearray.html">TQByteArray</a> or <a href="ntqcstring.html">TQCString</a> instead.
|
|
<p> <dt><b>TQString is not an array of bytes</b></dt>
|
|
<dd>
|
|
Code that uses <a href="ntqstring.html">TQString</a> as an array of bytes should use TQByteArray
|
|
or a char[], <em>then</em> convert that to a TQString if needed.
|
|
<p> <dt><b>"string = 0"</b></dt>
|
|
<dd>
|
|
Assigning 0 to a TQString should be assigning the null string,
|
|
ie. string = TQString::null.
|
|
<p> <dt><b>System functions</b></dt>
|
|
<dd>
|
|
You may find yourself needing latin1() for passing to the operating system
|
|
or other libraries, and be tempted to use TQCString to save the conversion,
|
|
but you are better off using Unicode throughout, then when the operating
|
|
system supports Unicode, you'll be prepared. Some Unix operating systems
|
|
are now beginning to have basic Unicode support, and TQt will be tracking
|
|
these improvements as they become more widespread.
|
|
<p> <dt><b>Bugs removed</b></dt>
|
|
<dd>
|
|
toShort() returns 0 (and sets *ok to false) on error.
|
|
toUInt() now works for big valid unsigned integers.
|
|
insert() now works into the same string.
|
|
<p> <dt><b>NULL pointers</b></dt>
|
|
<dd>
|
|
When converting "const char*" usage to TQString in order to make your
|
|
application fully Unicode-aware, use TQString::null for the null value
|
|
where you would have used 0 with char pointers.
|
|
<p> <dt><b>TQString is not null terminated</b></dt>
|
|
<dd>
|
|
This means that inserting a 0-character
|
|
in the middle of the string does <em>not</em> change the length(). ie.
|
|
<pre>
|
|
<a href="ntqstring.html">TQString</a> s = "fred";
|
|
s[1] = '\0';
|
|
// s.<a href="ntqstring.html#length">length</a>() == 4
|
|
// s == "f\0ed"
|
|
// s.<a href="ntqstring.html#latin1">latin1</a>() == "f"
|
|
s[1] = 'r';
|
|
// s == "fred"
|
|
// s.<a href="ntqstring.html#latin1">latin1</a>() == "fred"
|
|
</pre>
|
|
|
|
Especially look out for this type of code:
|
|
<pre>
|
|
<a href="ntqstring.html">TQString</a> s(2);
|
|
s[0] = '?';
|
|
s[1] = 0;
|
|
</pre>
|
|
|
|
This creates a string 2 characters long.
|
|
To find these problems while converting, you might like to
|
|
add <a href="ntqapplication.html#Q_ASSERT">Q_ASSERT</a>(strlen(d->ascii)==d->len) inside
|
|
<pre> TQString::latin1()</pre>
|
|
.
|
|
<p> <dt><b>TQString or Standard C++ string?</b></dt>
|
|
<dd>
|
|
<p>
|
|
The Standard C++ Library string is not Unicode. Nor is wstring defined
|
|
to be so (for the small number of platforms where it is defined at all).
|
|
This is the same mistake made over and over
|
|
in the history of C - only when non-8-bit characters are <em>the norm</em>
|
|
do programmers find them usable. Though it is possible to convert between
|
|
string and <a href="ntqstring.html">TQString</a>, it is less efficient than using TQString throughout.
|
|
For example, when using:
|
|
<pre>
|
|
TQLabel::<a href="ntqlabel.html#setText">setText</a>( const <a href="ntqstring.html">TQString</a>& )
|
|
</pre>
|
|
|
|
if you use string, like this:
|
|
<pre>
|
|
void myclass::dostuffwithtext( const string& str )
|
|
{
|
|
mylabel.setText( TQString(str.c_str()) );
|
|
}
|
|
</pre>
|
|
|
|
that will create a (ASCII only) copy of str, stored in mylabel.
|
|
But this:
|
|
<pre>
|
|
void myclass::dostuffwithtext( const <a href="ntqstring.html">TQString</a>& str )
|
|
{
|
|
mylabel.setText( str );
|
|
}
|
|
</pre>
|
|
|
|
will make an <a href="shclass.html#implicitly-shared">implicitly shared</a> reference to str in the <a href="ntqlabel.html">TQLabel</a> - no copying
|
|
at all. This function might be 10 nested function calls away from something
|
|
like this:
|
|
<pre>
|
|
void toplevelclass::initializationstuff()
|
|
{
|
|
doStuff( tr("Okay") );
|
|
}
|
|
</pre>
|
|
|
|
At this point, in TQt 2.x, the tr() does a very fast dictionary lookup
|
|
through memory-mapped message files, returning some Unicode <a href="ntqstring.html">TQString</a> for
|
|
the appropriate language (the default being to just make a TQString out
|
|
of the text, of course - you're not <em>forced</em> to use any of these
|
|
features), and that <em>same</em> memory mapped Unicode will be passed
|
|
though the system. All occurrences of the translation of "Okay" can
|
|
potentially be shared.
|
|
<p> </dl>
|
|
<p> <h3><a name="TQApplication">TQApplication</a></h3>
|
|
<p> In the function <pre> TQApplication::setColorSpec()</pre>
|
|
,
|
|
PrivateColor and TrueColor are obsolete. Use ManyColor instead.
|
|
<p> <h3><a name="TQColor">TQColor</a></h3>
|
|
<p> <p>
|
|
All colors
|
|
(color0,
|
|
color1,
|
|
black,
|
|
white,
|
|
darkGray,
|
|
gray,
|
|
lightGray,
|
|
red,
|
|
green,
|
|
blue,
|
|
cyan,
|
|
magenta,
|
|
yellow,
|
|
darkRed,
|
|
darkGreen,
|
|
darkBlue,
|
|
darkCyan,
|
|
darkMagenta,
|
|
and
|
|
darkYellow)
|
|
are in the TQt namespace.
|
|
In members of classes that inherit the TQt namespace-class (eg. <a href="ntqwidget.html">TQWidget</a>
|
|
subclasses), you can use the unqualified names as before, but in global
|
|
functions (eg. main()), you need to qualify them: TQt::red, TQt::white, etc.
|
|
See also the <a href="#TQRgb">TQRgb</a> section below.
|
|
<p> <h3><a name="TQRgb">TQRgb</a></h3>
|
|
<p> In TQRgb (a typedef of long), the order of the RGB channels has changed to
|
|
be in the more efficient order (for typical contemporary hardware). If your
|
|
code made assumptions about the order, you will get blue where you expect
|
|
red and vice versa (you'll not notice the problem if you use shades of
|
|
gray, green, or magenta). You should port your code to use the
|
|
creator function <a href="ntqcolor.html#qRgb">tqRgb</a>(int r,int g,int b) and the
|
|
access functions <a href="ntqcolor.html#qRed">tqRed</a>(TQRgb), <a href="ntqcolor.html#qBlue">tqBlue</a>(TQRgb), and <a href="ntqcolor.html#qGreen">tqGreen</a>(TQRgb).
|
|
If you are using the alpha channel, it hasn't moved, but you should use
|
|
the functions <a href="ntqcolor.html#qRgba">tqRgba</a>(int,int,int,int) and <a href="ntqcolor.html#qAlpha">tqAlpha</a>(TQRgb). Note also that
|
|
<a href="ntqcolor.html#pixel">TQColor::pixel</a>() does <i>not</i> return a TQRgb (it never did on all platforms,
|
|
but your code may have assumed so on your platform) - this may also produce
|
|
strange color results - use <a href="ntqcolor.html#rgb">TQColor::rgb</a>() if you want a TQRgb.
|
|
<p> <h3><a name="TQDataStream">TQDataStream</a></h3>
|
|
<p> <p>The TQDatastream serialization format of most TQt classes is changed
|
|
in TQt 2.x. Use <pre> TQDataStream::setVersion( 1 )</pre>
|
|
to get a
|
|
datastream object that can read and write TQt 1.x format data streams.
|
|
<p> <p>If you want to write TQt 1.x format datastreams, note the following
|
|
compatibility issues:
|
|
<ul>
|
|
<li>TQString: TQt 1.x has no Unicode support, so strings will be
|
|
serialized by writing the classic C string returned by <pre>
|
|
TQString::<a href="ntqstring.html#latin1">latin1</a>().</pre>
|
|
|
|
<li><a href="#TQPoint">TQPoint & al.</a>: Coordinates will be
|
|
truncated to the TQt 1.x 16 bit format.
|
|
</ul>
|
|
<p> <h3><a name="TQWidget">TQWidget</a></h3>
|
|
<p> <h4>TQWidget::recreate()</h4>
|
|
<p>
|
|
This function is now called <a href="ntqwidget.html#reparent">reparent()</a>.
|
|
<p> <h4>TQWidget::setAcceptFocus(bool)</h4>
|
|
<p>
|
|
This function is removed.
|
|
Calls like TQWidget::setAcceptFocus(TRUE) should be replaced by
|
|
<pre> TQWidget::setFocusPolicy(StrongFocus)</pre>
|
|
, and
|
|
calls like TQWidget::setAcceptFocus(FALSE) should be replaced by
|
|
<pre> TQWidget::setFocusPolicy(NoFocus)</pre>
|
|
.
|
|
Additional policies are TabFocus and ClickFocus.
|
|
<p> <h4>TQWidget::paintEvent()</h4>
|
|
<p>
|
|
paintEvent(0) is not permitted - subclasses need not check for
|
|
a null event, and might crash.
|
|
Never pass 0 as the argument to paintEvent(). You probably
|
|
just want repaint() or update() instead.
|
|
<p>
|
|
When processing a paintEvent, painting is only permitted within
|
|
the update region specified in the event. Any painting outside will be
|
|
clipped away. This shouldn't break any code (it was always like this
|
|
on MS-Windows) but makes many explicit calls to
|
|
<a href="ntqpainter.html#setClipRegion">TQPainter::setClipRegion</a>() superfluous. Apart from the improved
|
|
consistency, the change is likely to reduce flicker and to make TQt
|
|
event slightly faster.
|
|
<p> <h3><a name="TQIODevice">TQIODevice</a></h3>
|
|
<p>
|
|
The protected member TQIODevice::index is renamed to TQIODevice::ioIndex
|
|
to avoid warnings and to allow compilation with bad C libraries that
|
|
#define index to strchr. If you have made a subclass of <a href="ntqiodevice.html">TQIODevice</a>,
|
|
check every occurrence of the string "index" in the implementation, since
|
|
a compiler will not always catch cases like <pre>(uint)index</pre>
|
|
|
|
that need to be changed.
|
|
<p> <h3><a name="TQLabel">TQLabel</a></h3>
|
|
<p> <h4><pre> TQLabel::setMargin()</pre>
|
|
</h4>
|
|
<p>
|
|
<pre> TQLabel::setMargin()</pre>
|
|
and<pre> TQLabel::margin()</pre>
|
|
|
|
have been renamed to <pre> TQLabel::setIndent()</pre>
|
|
and
|
|
<pre> TQLabel::indent()</pre>
|
|
, respectively. This was done to avoid
|
|
collision with <a href="ntqframe.html#setMargin">TQFrame::setMargin</a>(), which is now virtual.
|
|
<p> <h4><pre> TQLabel::setMovie()</pre>
|
|
</h4>
|
|
<p>
|
|
Previously, setting a movie on a label cleared the value of text().
|
|
Now it doesn't. If you somehow used <tt>TQLabel::text()</tt>
|
|
to detect if a
|
|
movie was set, you might have trouble. This is unlikely.
|
|
<p> <h3><a name="TQDialog">TQDialog</a></h3>
|
|
<p> <p> The semantics of the parent pointer changed for modeless dialogs:
|
|
In TQt-2.x, dialogs are always top level windows. The parent, however,
|
|
takes the ownership of the dialog, i.e. it will delete the dialog at
|
|
destruction if it has not been explicitly deleted
|
|
already. Furthermore, the window system will be able to tell that both
|
|
the dialog and the parent belong together. Some X11 window managers
|
|
will for instance provide a common taskbar entry in that case.
|
|
<p> <p>
|
|
If the dialog belongs to a top level main window
|
|
of your application, pass this main window as parent to the dialog's
|
|
constructor. Old code (with 0 pointer) will still run. Old code that
|
|
included TQDialogs as child widgets will no longer work (it never really did).
|
|
If you think you might be doing this, put a breakpoint in
|
|
<a href="ntqdialog.html#TQDialog">TQDialog::TQDialog</a>() conditional on parent not being 0.
|
|
<p> <h3><a name="TQStrList">TQStrList</a></h3>
|
|
<p> Many methods that took a <a href="ntqstrlist.html">TQStrList</a> can now instead take a <a href="ntqstringlist.html">TQStringList</a>,
|
|
which is a real list of <a href="ntqstring.html">TQString</a> values.
|
|
<p> To use TQStringList rather than TQStrList, change loops that look like this:
|
|
<pre>
|
|
<a href="ntqstrlist.html">TQStrList</a> list = ...;
|
|
const char* s;
|
|
for ( s = list.<a href="ntqptrlist.html#first">first</a>(); s; s = list.<a href="ntqptrlist.html#next">next</a>() ) {
|
|
process(s);
|
|
}
|
|
</pre>
|
|
|
|
to be like this:
|
|
<pre>
|
|
<a href="ntqstringlist.html">TQStringList</a> list = ...;
|
|
TQStringList::ConstIterator i;
|
|
for ( i = list.<a href="ntqvaluelist.html#begin">begin</a>(); i != list.<a href="ntqvaluelist.html#end">end</a>(); ++i ) {
|
|
process(*i);
|
|
}
|
|
</pre>
|
|
|
|
<p> In general, the TQStrList functions are less efficient, building a temporary TQStringList.
|
|
<p> The following functions now use TQStringList rather than TQStrList
|
|
for return types/parameters.
|
|
<p> <ul>
|
|
<li><tt>void <a href="ntqfiledialog.html#setFilters">TQFileDialog::setFilters</a>(const <a href="ntqstrlist.html">TQStrList</a>&)</tt>
|
|
becomes <tt>void TQFileDialog::setFilters(const <a href="ntqstringlist.html">TQStringList</a>&)</tt>
|
|
<li><tt>TQStrList <a href="ntqfiledialog.html#getOpenFileNames">TQFileDialog::getOpenFileNames</a>(...)</tt>
|
|
becomes <tt>TQStringList TQFileDialog::getOpenFileNames(...)</tt>
|
|
<li><tt>bool TQUrlDrag::decodeLocalFiles(<a href="qmimesource.html">TQMimeSource</a>*, TQStrList&)</tt>
|
|
becomes <tt>bool <a href="quridrag.html#decodeLocalFiles">TQUriDrag::decodeLocalFiles</a>(TQMimeSource*, TQStringList&)</tt>
|
|
<li><tt>const TQStrList *TQDir::entryList(...) const</tt>
|
|
becomes <tt>TQStringList <a href="ntqdir.html#entryList">TQDir::entryList</a>(...) const</tt>
|
|
(note that the return type is no longer a pointer). You may also
|
|
choose to use encodedEntryList().
|
|
</ul>
|
|
<p> The following functions are added:
|
|
<ul>
|
|
<li><tt>TQComboBox::insertStringList(const TQStringList &, int index=-1)</tt>
|
|
<li><tt>TQListBox::insertStringList(const TQStringList &,int index=-1)</tt>
|
|
</ul>
|
|
<p> The rarely used static function <tt>void
|
|
TQFont::listSubstitutions(<a href="ntqstrlist.html">TQStrList</a>*)</tt> is replaced by <tt>TQStringList
|
|
<a href="ntqfont.html#substitutions">TQFont::substitutions</a>()</tt>.
|
|
<p> <h3><a name="TQLayout">TQLayout</a></h3>
|
|
<p> <p> Calling resize(0,0) or resize(1,1) will no longer work magically.
|
|
Remove all such calls. The default size of top level widgets will be their
|
|
<a href="ntqwidget.html#sizeHint">sizeHint()</a>.
|
|
<p> <p> The default implementation of <a href="ntqwidget.html#sizeHint">TQWidget::sizeHint</a>() will no longer
|
|
return just an invalid size; if the widget has a layout, it will return
|
|
the layout's preferred size.
|
|
<p> <p> The special maximum MaximumHeight/Width is now TQWIDGETSIZE_MAX,
|
|
not TQCOORD_MAX.
|
|
<p> <p> <a href="qboxlayout.html#addWidget">TQBoxLayout::addWidget()</a>
|
|
now interprets the <em>alignment</em> parameter more aggressively. A
|
|
non-default alignment now indicates that the widget should not grow to
|
|
fill the available space, but should be sized according to sizeHint().
|
|
If a widget is too small, set the alignment to 0. (Zero indicates no
|
|
alignment, and is the default.)
|
|
<p> <p> The class TQGManager is removed. Subclasses of <a href="ntqlayout.html">TQLayout</a> need to be rewritten
|
|
to use the new, much simpler <a href="ntqlayout.html">TQLayout API</a>.
|
|
<p> <p> For typical layouts, all use of
|
|
<a href="ntqwidget.html#setMinimumSize">setMinimumSize()</a>
|
|
and
|
|
<a href="ntqwidget.html#setFixedSize">setFixedSize()</a>
|
|
can be removed.
|
|
<a href="ntqlayout.html#activate">activate()</a> is no longer necessary.
|
|
<p> <p>
|
|
You might like to look at the <a href="ntqgrid.html">TQGrid</a>, <a href="ntqvbox.html">TQVBox</a>, and <a href="ntqhbox.html">TQHBox</a> widgets - they offer
|
|
a simple way to build nested widget structures.
|
|
<p> <h3><a name="TQListView">TQListView</a></h3>
|
|
<p> <p>In TQt 1.x mouse events to the viewport where redirected to the
|
|
event handlers for the listview; in TQt 2.x, this functionality is
|
|
in <a href="ntqscrollview.html">TQScrollView</a> where mouse (and other position-oriented) events are
|
|
redirected to viewportMousePressEvent() etc, which in turn translate
|
|
the event to the coordinate system of the contents and call
|
|
contentsMousePressEvent() etc, thus providing events in the most
|
|
convenient coordinate system. If you overrode TQListView::MouseButtonPress(),
|
|
<a href="ntqwidget.html#mouseDoubleClickEvent">TQListView::mouseDoubleClickEvent</a>(), <a href="ntqwidget.html#mouseMoveEvent">TQListView::mouseMoveEvent</a>(), or
|
|
<a href="ntqwidget.html#mouseReleaseEvent">TQListView::mouseReleaseEvent</a>() you must instead override
|
|
viewportMousePressEvent(),
|
|
viewportMouseDoubleClickEvent(), viewportMouseMoveEvent(), or
|
|
viewportMouseReleaseEvent() respectively. New code will usually override
|
|
contentsMousePressEvent() etc.
|
|
<p> <p>The signal <a href="ntqlistview.html#selectionChanged">TQListView::selectionChanged</a>(<a href="qlistviewitem.html">TQListViewItem</a> *) can now be
|
|
emitted with a null pointer as parameter. Programs that use the
|
|
argument without checking for 0, may crash.
|
|
<p> <h3><a name="TQMultiLineEdit">TQMultiLineEdit</a></h3>
|
|
<p> <p>
|
|
The protected function
|
|
<pre> TQMultiLineEdit::textWidth(TQString*)</pre>
|
|
|
|
changed to
|
|
<pre> TQMultiLineEdit::textWidth(const <a href="ntqstring.html">TQString</a>&)</pre>
|
|
.
|
|
This is unlikely to be a problem, and you'll get a compile error
|
|
if you called it.
|
|
<p> <h3><a name="TQClipboard">TQClipboard</a></h3>
|
|
<p> <p>
|
|
<pre> TQClipboard::pixmap()</pre>
|
|
now returns a <a href="ntqpixmap.html">TQPixmap</a>, not a TQPixmap*.
|
|
The pixmap
|
|
will be <a href="ntqpixmap.html#isNull">null</a> if no pixmap is on the
|
|
clipboard. <a href="ntqclipboard.html">TQClipboard</a> now offers powerful MIME-based types on the
|
|
clipboard, just like drag-and-drop (in fact, you can reuse most of your
|
|
drag-and-drop code with clipboard operations).
|
|
<p> <h3><a name="TQDropSite">TQDropSite</a></h3>
|
|
<p> <P>
|
|
TQDropSite is obsolete. If you simply passed <tt>this</tt>, just remove
|
|
the inheritance of TQDropSite and call
|
|
<a href="ntqwidget.html#setAcceptDrops">setAcceptDrops(TRUE)</a> in the class
|
|
constructor.
|
|
If you passed something other than <tt>this</tt>,
|
|
your code will not work. A common case is passing
|
|
the
|
|
<a href="ntqscrollview.html#viewport">viewport()</a> of a <a href="ntqlistview.html">TQListView</a>,
|
|
in which case,
|
|
override the
|
|
<a href="ntqscrollview.html#contentsDragMoveEvent">contentsDragMoveEvent()</a>,
|
|
etc.
|
|
functions rather than TQListView's dragMoveEvent() etc. For other
|
|
cases, you will need to use an event filter to act on the drag/drop events
|
|
of another widget (as is the usual way to intercept foreign events).
|
|
<p> <h3><a name="TQScrollView">TQScrollView</a></h3>
|
|
<p> The parameters in the signal
|
|
<a href="ntqscrollview.html#contentsMoving">contentsMoving(int,int)</a>
|
|
are now positive rather than negative values, coinciding with
|
|
<a href="ntqscrollview.html#setContentsPos">setContentsPos()</a>. Search for
|
|
connections you make to this signal, and either change the slot they are
|
|
connected to such that it also expects positive rather than negative
|
|
values, or introduce an intermediate slot and signal that negates them.
|
|
<p> If you used drag and drop with <a href="ntqscrollview.html">TQScrollView</a>, you may experience the problem
|
|
described for <a href="#TQDropSite">TQDropSite</a>.
|
|
<p> <h3><a name="TQTextStream">TQTextStream</a></h3>
|
|
<p> <p>
|
|
<pre> operator<<(TQTextStream&, TQChar&)</pre>
|
|
does not skip whitespace.
|
|
<pre> operator<<(TQTextStream&, char&)</pre>
|
|
does,
|
|
as was the case with TQt 1.x. This is for backward compatibility.
|
|
<p> <h3><a name="TQUriDrag">TQUriDrag</a></h3>
|
|
<p> The class TQUrlDrag is renamed to <a href="quridrag.html">TQUriDrag</a>, and the API has been
|
|
broadened to include additional conversion routines, including
|
|
conversions to Unicode filenames (see the class documentation
|
|
for details). Note that in TQt 1.x
|
|
the TQUrlDrag class used the non-standard MIME type "url/url",
|
|
while TQUriDrag uses the standardized "text/uri-list" type. Other
|
|
identifiers affected by the Url to Uri change are
|
|
TQUrlDrag::setUrls() and TQUrlDrag::urlToLocalFile().
|
|
<p> <h3><a name="TQPainter">TQPainter</a></h3>
|
|
<p> <p> The GrayText painter flag has been removed. Use
|
|
<a href="ntqpainter.html#setPen">setPen( palette().disabled().foreground() )</a>
|
|
instead.
|
|
<p> <p> The RasterOp enum
|
|
(CopyROP,
|
|
OrROP,
|
|
XorROP,
|
|
NotAndROP,
|
|
EraseROP,
|
|
NotCopyROP,
|
|
NotOrROP,
|
|
NotXorROP,
|
|
AndROP, NotEraseROP,
|
|
NotROP,
|
|
ClearROP,
|
|
SetROP,
|
|
NopROP,
|
|
AndNotROP,
|
|
OrNotROP,
|
|
NandROP,
|
|
NorROP, LastROP)
|
|
is now part of the TQt namespace class, so if you
|
|
use it outside a member function, you'll need to prefix with TQt::.
|
|
<p> <h3><a name="TQPicture">TQPicture</a></h3>
|
|
<p> <p>The binary storage format of <a href="ntqpicture.html">TQPicture</a> is changed, but the TQt 2.x
|
|
TQPicture class can both read and write TQt 1.x format TQPictures. No
|
|
special handling is required for reading; TQPicture will automatically
|
|
detect the version number. In order to write a TQt 1.x format TQPicture,
|
|
set the formatVersion parameter to 1 in the TQPicture constructor.
|
|
<p> <p>For writing TQt 1.x format TQPictures, the compatibility issues of <a
|
|
href="#TQDataStream">TQDataStream</a> applies.
|
|
<p> <p>It is safe to try to read a TQPicture file generated with TQt 2.x
|
|
(without formatVersion set to 1) with a program compiled with TQt
|
|
1.x. The program will not crash, it will just issue the warning
|
|
"TQPicture::play: Incompatible version 2.x" and refuse to load the
|
|
picture.
|
|
<p> <h3><a name="TQPoint">TQPoint, <a href="ntqpointarray.html">TQPointArray</a>, <a href="ntqsize.html">TQSize</a> and <a href="ntqrect.html">TQRect</a></a></h3>
|
|
<p> <p>The basic coordinate datatype in these classes, TQCOORD, is now 32
|
|
bit (int) instead of a 16 bit (short). The const values TQCOORD_MIN and
|
|
TQCOORD_MAX have changed accordingly.
|
|
<p> <p>TQPointArray is now actually, not only seemingly, a TQArray of <a href="ntqpoint.html">TQPoint</a>
|
|
objects. The semi-internal workaround classes TQPointData and TQPointVal
|
|
are removed since they are no longer needed; TQPoint is used directly
|
|
instead. The function <pre> TQPointArray::shortPoints()</pre>
|
|
|
|
provides the point array converted to short (16bit) coordinates for
|
|
use with external functions that demand that format.
|
|
<p> <h3><a name="TQImage">TQImage</a></h3>
|
|
<p> <a href="ntqimage.html">TQImage</a> uses TQRgb for the colors - see <a href="#TQRgb">the changes to that</a>.
|
|
<p> <h3><a name="TQPixmap">TQPixmap</a></h3>
|
|
<p> <pre> TQPixmap::convertToImage()</pre>
|
|
with bitmaps now guarantees that color0 pixels
|
|
become color(0) in the resulting TQImage. If you worked around the lack of
|
|
this, you may be able to simplify your code. If you made assumptions
|
|
about the previous undefined behavior, the symptom will be inverted
|
|
bitmaps (eg. "inside-out" masks).
|
|
<p> <p>
|
|
<pre> TQPixmap::optimize(TRUE)</pre>
|
|
|
|
is replaced by
|
|
<pre> TQPixmap::setOptimization(TQPixmap::NormalOptim)</pre>
|
|
|
|
or
|
|
<pre> TQPixmap::setOptimization(TQPixmap::BestOptim)</pre>
|
|
|
|
- see the documentation
|
|
to choose which is best for your application. NormalOptim is most like
|
|
the TQt 1.x "TRUE" optimization.
|
|
<p> <h3><a name="TQMenuData">TQMenuData / <a href="ntqpopupmenu.html">TQPopupMenu</a></a></h3>
|
|
<p> In TQt 1.x, new menu items were assigned either an application-wide
|
|
unique identifier or an identifier equal to the index of the item, depending on the
|
|
<a href="ntqmenudata.html#insertItem">insertItem(...)</a> function used.
|
|
In TQt 2.x this confusing
|
|
situation has been cleaned up: generated identifiers are always
|
|
unique across the entire application.
|
|
<p> If your code depends on generated ids
|
|
being equal to the item's index, a quick fix is to use
|
|
<pre> TQMenuData::indexOf(int id)</pre>
|
|
|
|
in the handling function instead. You may alternatively pass
|
|
<pre> TQMenuData::count()</pre>
|
|
|
|
as identifier when you insert the items.
|
|
<p> Furthermore, TQPopupMenus can (and should!) be created with a parent
|
|
widget now, for example the main window that is used to display the
|
|
popup. This way, the popup will automatically be destroyed together
|
|
with its main window. Otherwise you'll have to take care of the
|
|
ownership manually.
|
|
<p> TQPopupMenus are also reusable in 2.x. They may occur in different
|
|
locations within one menu structure or be used as both a menubar
|
|
drop-down and as a context popup-menu. This should make it possible to
|
|
significantly simplify many applications.
|
|
<p> Last but not least, <a href="ntqpopupmenu.html">TQPopupMenu</a> no longer inherits TQTableView. Instead,
|
|
it directly inherits <a href="ntqframe.html">TQFrame</a>.
|
|
<p> <h3><a name="TQValidator">TQValidator (<a href="ntqlineedit.html">TQLineEdit</a>, <a href="ntqcombobox.html">TQComboBox</a>, <a href="ntqspinbox.html">TQSpinBox</a>) </a></h3>
|
|
<p> <pre> TQValidator::validate(...)</pre>
|
|
|
|
and
|
|
<pre> TQValidator::fixup( <a href="ntqstring.html">TQString</a> & )</pre>
|
|
|
|
are now const
|
|
functions. If your subclass reimplements validate() as a
|
|
non-const function,
|
|
you will get a compile error (validate was pure virtual).
|
|
<p> In TQLineEdit, TQComboBox, and TQSpinBox,
|
|
setValidator(...) now takes a const pointer to a <a href="ntqvalidator.html">TQValidator</a>, and
|
|
validator() returns a const pointer. This change highlights the fact
|
|
that the widgets do not take the ownership of the validator (a validator is
|
|
a <a href="ntqobject.html">TQObject</a> on its own, with its own parent - you can easily set the same validator
|
|
object on many different widgets), so changing the state of
|
|
such an object or deleting it is very likely a bug.
|
|
<p> <h3><a name="TQFile">TQFile, <a href="ntqfileinfo.html">TQFileInfo</a>, <a href="ntqdir.html">TQDir</a></a></h3>
|
|
<p> File and directory names are now always Unicode strings (ie. <a href="ntqstring.html">TQString</a>). If you used TQString
|
|
in the past for the simplicity it offers, you'll probably have little consequence. However,
|
|
if you pass filenames to system functions rather than using TQt functions (eg. if you use the
|
|
Unix <tt>unlink()</tt> function rather than <tt>TQFile::remove()</tt>, your code will probably
|
|
only work for Latin1 locales (eg. Western Europe, the U.S.). To ensure your code will support
|
|
filenames in other locales, either use the TQt functions, or convert the filenames via
|
|
<pre> TQFile::encodeFilename()</pre>
|
|
and <pre> TQFile::decodeFilename()</pre>
|
|
- but do it
|
|
<em>just</em> as you call the system function - code that mixes encoded and unencoded filenames
|
|
is very error prone. See the comments in TQString, such as regarding QT_NO_ASCII_CAST that
|
|
can help find potential problems.
|
|
<p> <h3><a name="TQFontMetrics">TQFontMetrics</a></h3>
|
|
<p> boundingRect(char) is replaced by
|
|
boundingRect(<a href="qchar.html">TQChar</a>), but since
|
|
char auto-converts to TQChar, you're not likely to run into problems
|
|
with this.
|
|
<p> <h3><a name="TQWindow">TQWindow</a></h3>
|
|
<p> This class (which was just <a href="ntqwidget.html">TQWidget</a> under a different name) has been
|
|
removed. If you used it, do a global search-and-replace of the word
|
|
"TQWindow" with "TQWidget".
|
|
<p> <h3><a name="TQEvent">TQEvent</a></h3>
|
|
<p> <p> The global #define macros in ntqevent.h have been replaced by an
|
|
enum in <a href="ntqevent.html">TQEvent</a>. Use e.g. TQEvent::Paint instead of Event_Paint. Same
|
|
for all of:
|
|
Event_None,
|
|
Event_Timer,
|
|
Event_MouseButtonPress,
|
|
Event_MouseButtonRelease,
|
|
Event_MouseButtonDblClick,
|
|
Event_MouseMove,
|
|
Event_KeyPress,
|
|
Event_KeyRelease,
|
|
Event_FocusIn,
|
|
Event_FocusOut,
|
|
Event_Enter,
|
|
Event_Leave,
|
|
Event_Paint,
|
|
Event_Move,
|
|
Event_Resize,
|
|
Event_Create,
|
|
Event_Destroy,
|
|
Event_Show,
|
|
Event_Hide,
|
|
Event_Close,
|
|
Event_Quit,
|
|
Event_Accel,
|
|
Event_Clipboard,
|
|
Event_SockAct,
|
|
Event_DragEnter,
|
|
Event_DragMove,
|
|
Event_DragLeave,
|
|
Event_Drop,
|
|
Event_DragResponse,
|
|
Event_ChildInserted,
|
|
Event_ChildRemoved,
|
|
Event_LayoutHint,
|
|
Event_ActivateControl,
|
|
Event_DeactivateControl,
|
|
and
|
|
Event_User.
|
|
<p> <p> The Q_*_EVENT macros in ntqevent.h have been deleted. Use an
|
|
explicit cast instead. The macros were:
|
|
Q_TIMER_EVENT,
|
|
Q_MOUSE_EVENT,
|
|
Q_KEY_EVENT,
|
|
Q_FOCUS_EVENT,
|
|
Q_PAINT_EVENT,
|
|
Q_MOVE_EVENT,
|
|
Q_RESIZE_EVENT,
|
|
Q_CLOSE_EVENT,
|
|
Q_SHOW_EVENT,
|
|
Q_HIDE_EVENT,
|
|
and
|
|
Q_CUSTOM_EVENT.
|
|
<p> <p> TQChildEvents are now sent for all TQObjects, not just TQWidgets.
|
|
You may need to add extra checking if you use a <a href="qchildevent.html">TQChildEvent</a> without
|
|
much testing of its values.
|
|
<p> <h3>All the removed functions</h3>
|
|
<p> All <a href="removed20.html">these functions</a> have been removed in
|
|
TQt 2.x. Most are simply cases where "const char*" has changed to
|
|
"const <a href="ntqstring.html">TQString</a>&", or when an enumeration type has moved into the TQt::
|
|
namespace (which, technically, is a new name, but your code will
|
|
compile just the same anyway). This list is provided for completeness.
|
|
<p>
|
|
<!-- eof -->
|
|
<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>TQt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|