NAME

       SoXtInputFocus — reports input focus change events

INHERITS FROM

       SoXtDevice > SoXtInputFocus

SYNOPSIS

       #include <Inventor/Xt/devices/SoXtInputFocus.h>

       #define SO_XT_ALL_FOCUS_EVENTS (EnterWindowMask | LeaveWindowMask)

          Methods from class SoXtInputFocus:

                         SoXtInputFocus(EventMask mask = SO_XT_ALL_FOCUS_EVENTS)
                         ~SoXtInputFocus()

          Methods from class SoXtDevice:

     virtual  void             enable(Widget  w,  XtEventHandler  f, XtPointer data, Window win =
                                   NULL)
     virtual void             disable(Widget w, XtEventHandler f, XtPointer data)
     virtual const SoEvent *  translateEvent(XAnyEvent *xevent)
     void                     setWindowSize(const SbVec2s &size)
     const SbVec2s &          getWindowSize() const

DESCRIPTION

       This class reports input focus change events (i.e. when the cursor crosses into or out  of
       the window). There are no input focus events in Inventor, so this always returns NULL when
       asked to translate events.  When this class is registered on a  render  area,  the  render
       area  will receive X input focus change events. (This class is extensively employed by the
       viewer classes.)

METHODS

                         SoXtInputFocus(EventMask mask = SO_XT_ALL_FOCUS_EVENTS)
                         ~SoXtInputFocus()
          Constructor and destructor. To the constructor, pass which input focus events  you  are
          interested in as a bitwise OR of the following values:

          EnterWindowMask — Input focus entered the window

          LeaveWindowMask — Input focus left the window

          Or simply pass the defined value SO_XT_ALL_FOCUS_EVENTS for all input focus events.

SEE ALSO

       SoXtDevice

                                                                            SoXtInputFocus(3IV)()