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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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