SoXtInputFocus(3IV)

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