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/*!
    \page qtopiacore-envvars.html

    \title Qtopia Core Environment Variables
    \ingroup qtopiacore

    These environment variables are relevant to \l {Qtopia Core}
    users.

    \table
    \header \o Variable \o Description

    \row
    \o \bold POINTERCAL_FILE \target POINTERCAL_FILE

    \o Specifies the file containing the data used to calibrate the
    pointer device.

    See also QWSCalibratedMouseHandler and \l {Qtopia Core Pointer
    Handling}.

    \row
    \o \bold QT_ONSCREEN_PAINT \target QT_ONSCREEN_PAINT

    \o If defined, the application will render its widgets directly on
    screen. The affected regions of the screen will not be modified by
    the screen driver unless another window with a higher focus
    requests (parts of) the same region.

    Setting this environment variable is equivalent to setting the
    Qt::WA_PaintOnScreen attribute for all the widgets in the
    application.

    See also the Qtopia Core \l {Qtopia Core Architecture#Graphics
    Rendering}{graphics rendering} documentation.

    \row
    \o \bold QWS_SW_CURSOR \target QWS_SW_CURSOR
    \o If defined, the software mouse cursor is always used (even when using an
    accelerated driver that supports a hardware cursor).

    \row
    \o \bold QWS_DISPLAY \target QWS_DISPLAY
    \o

    Specifies the display type and framebuffer. For example, if the
    current shell is bash, ksh, zsh or sh:

    \code
         export QWS_DISPLAY=<driver>[:<driver specific options>]...
                 [:<display num>]
    \endcode

    The valid values for the \c <driver> argument are \c LinuxFb, \c
    QVFb, \c VNC, \c Transformed, \c Multi and \l
    {QScreenDriverPlugin::keys()}{keys} identifying custom drivers,
    and the \c {<display num>} argument is used to separate screens
    that are using the same screen driver and to enable multiple
    displays (see the \l {Running Qtopia Core Applications}
    documentation for more details).

    The driver specific options are described in the \l {Qtopia Core
    Display Management}{display management} documentation.

    \row
    \o \bold QWS_SIZE \target QWS_SIZE
    \o

    Specifies the size of \l {Qtopia Core}'s window which is centered
    within the screen. For example, if the current shell is bash, ksh,
    zsh or sh:

    \code
        export QWS_SIZE=<width>x<height>
    \endcode

    \row
    \o \bold QWS_MOUSE_PROTO \target QWS_MOUSE_PROTO
    \o

    Specifies the driver for pointer handling. For example, if the
    current shell is bash, ksh, zsh or sh:

    \code
        export QWS_MOUSE_PROTO=<driver>[:<driver specific options>]
    \endcode

    The valid values for the \c <driver> argument are \c MouseMan, \c
    IntelliMouse, \c Microsoft, \c VR41xx, \c LinuxTP, \c Yopy. \c
    Tslib and \l {QMouseDriverPlugin::keys()}{keys} identifying
    custom drivers, and the driver specific options are typically a
    device, e.g., \c /dev/mouse for mouse devices and \c /dev/ts for
    touch panels.

    Multiple keyboard drivers can be specified in one go:

    \code
         export QWS_MOUSE_PROTO="<driver>[:<driver specific options>]
                 <driver>[:<driver specific options>]
                 <driver>[:<driver specific options>]"
    \endcode

    Input will be read from all specified drivers.
    Note that the \c Vr41xx driver also accepts two optional
    arguments: \c press=<value> defining a mouseclick (the default
    value is 750) and \c filter=<value> specifying the length of the
    filter used to eliminate noise (the default length is 3). For
    example:

    \code
        export QWS_MOUSE_PROTO="Vr41xx:press=500:/dev/misc/ts"
    \endcode

    See also \l {Qtopia Core Pointer Handling}.

    \row
    \o \bold QWS_KEYBOARD \target QWS_KEYBOARD
    \o

    Specifies the driver and device for character input. For example, if the
    current shell is bash, ksh, zsh or sh:

    \code
         export QWS_KEYBOARD=<driver>[:<driver specific options>]
    \endcode

    The valid values for the \c <driver> argument are \c SL5000, \c
    Yopy, \c VR41xx, \c TTY, \c USB and \l
    {QKbdDriverPlugin::keys()}{keys} identifying custom drivers,
    and the driver specific options are typically a device, e.g., \c
    /dev/tty0.

    Multiple keyboard drivers can be specified in one go:

    \code
         export QWS_KEYBOARD="<driver>[:<driver specific options>]
                 <driver>[:<driver specific options>]
                 <driver>[:<driver specific options>]"
    \endcode

    Input will be read from all specified drivers.

    See also \l {Qtopia Core Character Input}.

    \endtable
*/
