You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
169 lines
10 KiB
169 lines
10 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/tools/designer/uilib/tqwidgetfactory.cpp:207 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>TQWidgetFactory Class</title>
|
|
<style type="text/css"><!--
|
|
fn { margin-left: 1cm; text-indent: -1cm; }
|
|
a:link { color: #004faf; text-decoration: none }
|
|
a:visited { color: #672967; text-decoration: none }
|
|
body { background: #ffffff; color: black; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr bgcolor="#E5E5E5">
|
|
<td valign=center>
|
|
<a href="index.html">
|
|
<font color="#004faf">Home</font></a>
|
|
| <a href="classes.html">
|
|
<font color="#004faf">All Classes</font></a>
|
|
| <a href="mainclasses.html">
|
|
<font color="#004faf">Main Classes</font></a>
|
|
| <a href="annotated.html">
|
|
<font color="#004faf">Annotated</font></a>
|
|
| <a href="groups.html">
|
|
<font color="#004faf">Grouped Classes</font></a>
|
|
| <a href="functions.html">
|
|
<font color="#004faf">Functions</font></a>
|
|
</td>
|
|
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQWidgetFactory Class Reference</h1>
|
|
|
|
<p>The TQWidgetFactory class provides for the dynamic creation of widgets
|
|
from TQt Designer .ui files.
|
|
<a href="#details">More...</a>
|
|
<p><tt>#include <<a href="tqwidgetfactory-h.html">tqwidgetfactory.h</a>></tt>
|
|
<p><a href="tqwidgetfactory-members.html">List of all member functions.</a>
|
|
<h2>Public Members</h2>
|
|
<ul>
|
|
<li class=fn><a href="#TQWidgetFactory"><b>TQWidgetFactory</b></a> ()</li>
|
|
<li class=fn>virtual <a href="#~TQWidgetFactory"><b>~TQWidgetFactory</b></a> ()</li>
|
|
<li class=fn>virtual TQWidget * <a href="#createWidget"><b>createWidget</b></a> ( const TQString & className, TQWidget * parent, const char * name ) const</li>
|
|
</ul>
|
|
<h2>Static Public Members</h2>
|
|
<ul>
|
|
<li class=fn>TQWidget * <a href="#create"><b>create</b></a> ( const TQString & uiFile, TQObject * connector = 0, TQWidget * parent = 0, const char * name = 0 )</li>
|
|
<li class=fn>TQWidget * <a href="#create-2"><b>create</b></a> ( TQIODevice * dev, TQObject * connector = 0, TQWidget * parent = 0, const char * name = 0 )</li>
|
|
<li class=fn>void <a href="#addWidgetFactory"><b>addWidgetFactory</b></a> ( TQWidgetFactory * factory )</li>
|
|
<li class=fn>void <a href="#loadImages"><b>loadImages</b></a> ( const TQString & dir )</li>
|
|
<li class=fn>TQStringList <a href="#widgets"><b>widgets</b></a> ()</li>
|
|
<li class=fn>bool <a href="#supportsWidget"><b>supportsWidget</b></a> ( const TQString & widget )</li>
|
|
</ul>
|
|
<hr><a name="details"></a><h2>Detailed Description</h2>
|
|
|
|
|
|
<p> The TQWidgetFactory class provides for the dynamic creation of widgets
|
|
from TQt Designer .ui files.
|
|
<p> This class basically offers two things:
|
|
<p> <ul>
|
|
<p> <li> Dynamically creating widgets from <a href="designer-manual.html">TQt
|
|
Designer</a> user interface description files.
|
|
You can do this using the static function <a href="#create">TQWidgetFactory::create</a>().
|
|
This function also performs signal and slot connections, tab
|
|
ordering, etc., as defined in the .ui file, and returns the
|
|
top-level widget in the .ui file. After creating the widget you can
|
|
use <a href="tqobject.html#child">TQObject::child</a>() and <a href="tqobject.html#queryList">TQObject::queryList</a>() to access child
|
|
widgets of this returned widget.
|
|
<p> <li> Adding additional widget factories to be able to create custom
|
|
widgets. See <a href="#createWidget">createWidget</a>() for details.
|
|
<p> </ul>
|
|
<p> This class is not included in the TQt library itself. To use it you
|
|
must link against <tt>libtqui.so</tt> (Unix) or <tt>tqui.lib</tt> (Windows), which is
|
|
built into <tt>INSTALL/lib</tt> if you built <em>TQt Designer</em> (<tt>INSTALL</tt> is
|
|
the directory where TQt is installed ).
|
|
<p> If you create a <a href="tqmainwindow.html">TQMainWindow</a> using a TQWidgetFactory, be aware that
|
|
it already has a central widget. Therefore, you need to delete this
|
|
one before setting another one.
|
|
<p> See the "Creating Dynamic Dialogs from .ui Files" section of the <a href="designer-manual.html">TQt Designer manual</a> for an example. See
|
|
also the <a href="tqwidgetplugin.html">TQWidgetPlugin</a> class and the <a href="plugins-howto.html">Plugins documentation</a>.
|
|
|
|
<hr><h2>Member Function Documentation</h2>
|
|
<h3 class=fn><a name="TQWidgetFactory"></a>TQWidgetFactory::TQWidgetFactory ()
|
|
</h3> Constructs a TQWidgetFactory.
|
|
<h3 class=fn><a name="~TQWidgetFactory"></a>TQWidgetFactory::~TQWidgetFactory ()<tt> [virtual]</tt>
|
|
</h3>
|
|
Destructor.
|
|
|
|
<h3 class=fn>void <a name="addWidgetFactory"></a>TQWidgetFactory::addWidgetFactory ( <a href="tqwidgetfactory.html">TQWidgetFactory</a> * factory )<tt> [static]</tt>
|
|
</h3> Installs a widget factory <em>factory</em>, which normally contains
|
|
additional widgets that can then be created using a TQWidgetFactory.
|
|
See <a href="#createWidget">createWidget</a>() for further details.
|
|
|
|
<h3 class=fn><a href="tqwidget.html">TQWidget</a> * <a name="create"></a>TQWidgetFactory::create ( const <a href="tqstring.html">TQString</a> & uiFile, <a href="tqobject.html">TQObject</a> * connector = 0, <a href="tqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )<tt> [static]</tt>
|
|
</h3>
|
|
<p> Loads the <em>TQt Designer</em> user interface description file <em>uiFile</em>
|
|
and returns the top-level widget in that description. <em>parent</em> and
|
|
<em>name</em> are passed to the constructor of the top-level widget.
|
|
<p> This function also performs signal and slot connections, tab
|
|
ordering, etc., as described in the .ui file. In <em>TQt Designer</em> it
|
|
is possible to add custom slots to a form and connect to them. If
|
|
you want these connections to be made, you must create a class
|
|
derived from <a href="tqobject.html">TQObject</a>, which implements all these slots. Then pass an
|
|
instance of the object as <em>connector</em> to this function. If you do
|
|
this, the connections to the custom slots will be done using the <em>connector</em> as slot.
|
|
<p> If something fails, 0 is returned.
|
|
<p> The ownership of the returned widget is passed to the caller.
|
|
|
|
<h3 class=fn><a href="tqwidget.html">TQWidget</a> * <a name="create-2"></a>TQWidgetFactory::create ( <a href="ntqiodevice.html">TQIODevice</a> * dev, <a href="tqobject.html">TQObject</a> * connector = 0, <a href="tqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )<tt> [static]</tt>
|
|
</h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
|
<p> Loads the user interface description from device <em>dev</em>.
|
|
|
|
<h3 class=fn><a href="tqwidget.html">TQWidget</a> * <a name="createWidget"></a>TQWidgetFactory::createWidget ( const <a href="tqstring.html">TQString</a> & className, <a href="tqwidget.html">TQWidget</a> * parent, const char * name ) const<tt> [virtual]</tt>
|
|
</h3>
|
|
Creates a widget of the type <em>className</em> passing <em>parent</em> and <em>name</em> to its constructor.
|
|
<p> If <em>className</em> is a widget in the TQt library, it is directly
|
|
created by this function. If the widget isn't in the TQt library,
|
|
each of the installed widget plugins is asked, in turn, to create
|
|
the widget. As soon as a plugin says it can create the widget it
|
|
is asked to do so. It may occur that none of the plugins can
|
|
create the widget, in which case each installed widget factory is
|
|
asked to create the widget (see <a href="#addWidgetFactory">addWidgetFactory</a>()). If the widget
|
|
cannot be created by any of these means, 0 is returned.
|
|
<p> If you have a custom widget, and want it to be created using the
|
|
widget factory, there are two approaches you can use:
|
|
<p> <ol type=1>
|
|
<p> <li> Write a widget plugin. This allows you to use the widget in
|
|
<em>TQt Designer</em> and in this TQWidgetFactory. See the widget plugin
|
|
documentation for further details. (See the "Creating Custom
|
|
Widgets with Plugins" section of the <a href="designer-manual.html">TQt
|
|
Designer manual</a> for an example.
|
|
<p> <li> Subclass TQWidgetFactory. Then reimplement this function to
|
|
create and return an instance of your custom widget if <em>className</em> equals the name of your widget, otherwise return 0. Then
|
|
at the beginning of your program where you want to use the widget
|
|
factory to create widgets do a:
|
|
<pre>
|
|
TQWidgetFactory::<a href="#addWidgetFactory">addWidgetFactory</a>( new MyWidgetFactory );
|
|
</pre>
|
|
|
|
where MyWidgetFactory is your TQWidgetFactory subclass.
|
|
<p> </ol>
|
|
|
|
<h3 class=fn>void <a name="loadImages"></a>TQWidgetFactory::loadImages ( const <a href="tqstring.html">TQString</a> & dir )<tt> [static]</tt>
|
|
</h3>
|
|
If you use a pixmap collection (which is the default for new
|
|
projects) rather than saving the pixmaps within the .ui XML file,
|
|
you must load the pixmap collection. TQWidgetFactory looks in the
|
|
default <a href="tqmimesourcefactory.html">TQMimeSourceFactory</a> for the pixmaps. Either add it there
|
|
manually, or call this function and specify the directory where
|
|
the images can be found, as <em>dir</em>. This is normally the
|
|
directory called <tt>images</tt> in the project's directory.
|
|
|
|
<h3 class=fn>bool <a name="supportsWidget"></a>TQWidgetFactory::supportsWidget ( const <a href="tqstring.html">TQString</a> & widget )<tt> [static]</tt>
|
|
</h3> Returns TRUE if the widget factory can create the specified <em>widget</em>;
|
|
otherwise returns FALSE.
|
|
<h3 class=fn><a href="tqstringlist.html">TQStringList</a> <a name="widgets"></a>TQWidgetFactory::widgets ()<tt> [static]</tt>
|
|
</h3> Returns the names of the widgets this factory can create.
|
|
<!-- eof -->
|
|
<hr><p>
|
|
This file is part of the <a href="index.html">TQt toolkit</a>.
|
|
Copyright © 1995-2007
|
|
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<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>
|