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QWidgetFactory(3qt)					   QWidgetFactory(3qt)

NAME
       QWidgetFactory - For the dynamic creation of widgets from Qt Designer
       .ui files

SYNOPSIS
       #include <qwidgetfactory.h>

   Public Members
       QWidgetFactory ()
       virtual ~QWidgetFactory ()
       virtual QWidget * createWidget ( const QString & className, QWidget *
	   parent, const char * name ) const

   Static Public Members
       QWidget * create ( const QString & uiFile, QObject * connector = 0,
	   QWidget * parent = 0, const char * name = 0 )
       QWidget * create ( QIODevice * dev, QObject * connector = 0, QWidget *
	   parent = 0, const char * name = 0 )
       void addWidgetFactory ( QWidgetFactory * factory )
       void loadImages ( const QString & dir )
       QStringList widgets ()
       bool supportsWidget ( const QString & widget )

DESCRIPTION
       The QWidgetFactory class provides for the dynamic creation of widgets
       from Qt Designer .ui files.

       This class basically offers two things:

       Dynamically creating widgets from Qt Designer user interface
       description files. You can do this using the static function
       QWidgetFactory::create(). 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 QObject::child() and QObject::queryList() to access child
       widgets of this returned widget.

       Adding additional widget factories to be able to create custom widgets.
       See createWidget() for details.

       This class is not included in the Qt library itself. To use it you must
       link against libqui.so (Unix) or qui.lib (Windows), which is built into
       INSTALL/lib if you built Qt Designer (INSTALL is the directory where Qt
       is installed ).

       If you create a QMainWindow using a QWidgetFactory, be aware that it
       already has a central widget. Therefore, you need to delete this one
       before setting another one.

       See the "Creating Dynamic Dialogs from .ui Files" section of the Qt
       Designer manual for an example. See also the QWidgetPlugin class and
       the Plugins documentation.

MEMBER FUNCTION DOCUMENTATION
QWidgetFactory::QWidgetFactory ()
       Constructs a QWidgetFactory.

QWidgetFactory::~QWidgetFactory () [virtual]
       Destructor.

void QWidgetFactory::addWidgetFactory ( QWidgetFactory * factory ) [static]
       Installs a widget factory factory, which normally contains additional
       widgets that can then be created using a QWidgetFactory. See
       createWidget() for further details.

QWidget * QWidgetFactory::create ( const QString & uiFile, QObject * connector
       = 0, QWidget * parent = 0, const char * name = 0 ) [static]
       Loads the Qt Designer user interface description file uiFile and
       returns the top-level widget in that description. parent and name are
       passed to the constructor of the top-level widget.

       This function also performs signal and slot connections, tab ordering,
       etc., as described in the .ui file. In Qt Designer 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 QObject,
       which implements all these slots. Then pass an instance of the object
       as connector to this function. If you do this, the connections to the
       custom slots will be done using the connector as slot.

       If something fails, 0 is returned.

       The ownership of the returned widget is passed to the caller.

QWidget * QWidgetFactory::create ( QIODevice * dev, QObject * connector = 0,
       QWidget * parent = 0, const char * name = 0 ) [static]
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Loads the user interface description from device dev.

QWidget * QWidgetFactory::createWidget ( const QString & className, QWidget *
       parent, const char * name ) const [virtual]
       Creates a widget of the type className passing parent and name to its
       constructor.

       If className is a widget in the Qt library, it is directly created by
       this function. If the widget isn't in the Qt 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
       addWidgetFactory()). If the widget cannot be created by any of these
       means, 0 is returned.

       If you have a custom widget, and want it to be created using the widget
       factory, there are two approaches you can use:

       <ol type=1>

       Write a widget plugin. This allows you to use the widget in Qt Designer
       and in this QWidgetFactory. See the widget plugin documentation for
       further details. (See the "Creating Custom Widgets with Plugins"
       section of the Qt Designer manual for an example.

       Subclass QWidgetFactory. Then reimplement this function to create and
       return an instance of your custom widget if className 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:

		  QWidgetFactory::addWidgetFactory( new MyWidgetFactory );
	      where MyWidgetFactory is your QWidgetFactory subclass.

void QWidgetFactory::loadImages ( const QString & dir ) [static]
       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. QWidgetFactory looks in the default
       QMimeSourceFactory for the pixmaps. Either add it there manually, or
       call this function and specify the directory where the images can be
       found, as dir. This is normally the directory called images in the
       project's directory.

bool QWidgetFactory::supportsWidget ( const QString & widget ) [static]
       Returns TRUE if the widget factory can create the specified widget;
       otherwise returns FALSE.

QStringList QWidgetFactory::widgets () [static]
       Returns the names of the widgets this factory can create.

SEE ALSO
       http://doc.trolltech.com/qwidgetfactory.html
       http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the
       license file included in the distribution for a complete license
       statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to
       help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is
       located at $QTDIR/doc/html and can be read using Qt Assistant or with a
       web browser. This man page is provided as a convenience for those users
       who prefer man pages, although this format is not officially supported
       by Trolltech.

       If you find errors in this manual page, please report them to qt-
       bugs@trolltech.com.  Please include the name of the manual page
       (qwidgetfactory.3qt) and the Qt version (3.3.8).

Trolltech AS			2 February 2007		   QWidgetFactory(3qt)
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