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/*!

    \page restoring-geometry.html

    \title Restoring a Window's Geometry

    \ingroup best-practices

    This document describes how to save and restore a \l{Window

    Geometry}{window's geometry} using the geometry properties. On

    Windows, this is basically storing the result of

    QWidget::geometry() and calling QWidget::setGeometry() in the next

    session before calling \l{QWidget::show()}{show()}.

    On X11, this might not work because an invisible window does not

    have a frame yet. The window manager will decorate the window

    later.  When this happens, the window shifts towards the

    bottom/right corner of the screen depending on the size of the

    decoration frame.  Although X provides a way to avoid this shift,

    some window managers fail to implement this feature.

    Since version 4.2, Qt provides functions that saves and restores a

    window's geometry and state for you. QWidget::saveGeometry()

    saves the window geometry and maximized/fullscreen state, while

    QWidget::restoreGeometry() restores it. The restore function also

    checks if the restored geometry is outside the available screen

    geometry, and modifies it as appropriate if it is:

    \snippet doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp 0

    \snippet doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp 1

    If those functions are not available or cannot be used, then a

    workaround is to call \l{QWidget::setGeometry()}{setGeometry()}

    after \l{QWidget::show()}{show()}. This has the two disadvantages

    that the widget appears at a wrong place for a millisecond

    (results in flashing) and that currently only every second window

    manager gets it right. A safer solution is to store both

    \l{QWidget::pos()}{pos()} and \l{QWidget::size()}{size()} and to

    restore the geometry using \l{QWidget::resize()} and

    \l{QWidget::move()}{move()} before calling

    \l{QWidget::show()}{show()}, as demonstrated in the

    \l{mainwindows/application}{Application} example.

*/