QScreenDriverPlugin Class Reference
^{[QtGui module]}

Detailed Description

The QScreenDriverPlugin class is an abstract base class for graphics driver plugins.

Note that this class is only available in Qtopia Core.

QScreenDriverPlugin is a simple plugin interface that makes it easy to create custom graphics drivers that can be loaded dynamically into applications using the QScreenDriverFactory class.

Writing a custom graphics driver plugin is achieved by subclassing QScreenDriverPlugin, reimplementing the pure virtual keys() and create() functions, and exporting the class using the Q_EXPORT_PLUGIN2() macro. See How to Create Qt Plugins for details.

See also QScreen, QScreenDriverFactory, and Running Applications.

Member Function Documentation

QScreenDriverPlugin::QScreenDriverPlugin ( QObject * parent = 0 )

Constructs a graphics driver plugin with the given parent.

Note that this constructor is invoked automatically by the Q_EXPORT_PLUGIN2() macro, so there is no need for calling it explicitly.

QScreenDriverPlugin::~QScreenDriverPlugin ()

Destroys this graphics driver plugin.

Note that Qt destroys a plugin automatically when it is no longer used, so there is no need for calling the destructor explicitly.

QScreen * QScreenDriverPlugin::create ( const QString & key, int displayId )   [pure virtual]

Creates a plugin matching the driver specified by the given key, using the display specified by displayId. Keys are case-insensitive.

See also keys().

QStringList QScreenDriverPlugin::keys () const   [pure virtual]

Returns the list of valid keys, i.e. the screen drivers supported by this plugin.

Qtopia Core currently supports the following drivers by default: QVfb (Qtopia Core's virtual framebuffer), LinuxFb (The Linux framebuffer), Transformed (for rotated displays) and VNC (a VNC server).

See also create().