qnpwidget.3qt man page

QNPWidget — QWidget that is a web browser plugin window


This class is part of the Qt Netscape Extension.

#include <qnp.h>

Inherits QWidget.

Public Members

QNPWidget ()

~QNPWidget ()

virtual void enterInstance ()

virtual void leaveInstance ()

QNPInstance * instance ()


This class is defined in the Qt Netscape Extension, which can be found in the qt/extensions directory. It is not included in the main Qt API.

The QNPWidget class provides a QWidget that is a web browser plugin window.

Derive from QNPWidget to create a widget that can be used as a web browser plugin window, or create one and add child widgets. Instances of QNPWidget may only be created when QNPInstance::newWindow() is called by the browser.

A common way to develop a plugin widget is to develop it as a stand-alone application window, then make it a child of a plugin widget to use it as a browser plugin. The technique is:

class MyPluginWindow : public QNPWidget


    QWidget* child;




        // Some widget that is normally used as a top-level widget

        child = new MyIndependentlyDevelopedWidget();

        // Use the background color of the web page

        child->setBackgroundColor( backgroundColor() );

        // Fill the plugin widget

        child->setGeometry( 0, 0, width(), height() );


    void resizeEvent(QResizeEvent*)


        // Fill the plugin widget




The default implementation is an empty window.

QNPWidget::QNPWidget ()

Creates a QNPWidget.

QNPWidget::~QNPWidget ()

Destroys the window. This will be called by the plugin binding code when the window is no longer required. The web browser will delete windows when they leave the page. The bindings will change the QWidget::winId() of the window when the window is resized, but this should not affect normal widget behavior.

void QNPWidget::enterInstance () [virtual]

Called when the mouse enters the plugin window. Does nothing by default.

Example: grapher/grapher.cpp.

QNPInstance * QNPWidget::instance ()

Returns the instance for which this widget is the plugin window.

void QNPWidget::leaveInstance () [virtual]

Called when the mouse leaves the plugin window. Does nothing by default.

Example: grapher/grapher.cpp.

See Also

http://doc.trolltech.com/qnpwidget.html http://www.trolltech.com/faq/tech.html


Generated automatically from the source code.


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

Referenced By

QNPWidget.3qt(3) is an alias of qnpwidget.3qt(3).

Trolltech AS 2 February 2007