XtSetKeyboardFocus(3Xt)     X Version 11(Release 3)     XtSetKeyboardFocus(3Xt)


NAME
      XtSetKeyboardFocus - focus events on a child widget

SYNTAX
      XtSetKeyboardFocus(subtree, descendant)
           Widget subtree, descendant;

ARGUMENTS
      descendant
                Specifies either the widget in the subtree structure which is
                to receive the keyboard event, or None.  Note that it is not an
                error to specify None when no input focus was previously set.

      w         Specifies the widget for which the keyboard focus is to be set.

DESCRIPTION
      If a future KeyPress or KeyRelease event occurs within the specified
      subtree, XtSetKeyboardFocus causes XtDispatchEvent to remap and send the
      event to the specified descendant widget.

      When there is no modal cascade, keyboard events can occur within a widget
      W in one of three ways:

      ⊕    W has the X input focus.

      ⊕    W has the keyboard focus of one of its ancestors, and the event
           occurs within the ancestor or one of the ancestor's descendants.

      ⊕    No ancestor of W has a descendant within the keyboard focus, and the
           pointer is within W.

      When there is a modal cascade, a widget W receives keyboard events if an
      ancestor of W is in the active subset of the modal cascade and one or
      more of the previous conditions is True.

      When subtree or one of its descendants acquires the X input focus or the
      pointer moves into the subtree such that keyboard events would now be
      delivered to subtree, a FocusIn event is generated for the descendant if
      FocusNotify events have been selected by the descendant.  Similarly, when
      W loses the X input focus or the keyboard focus for one of its ancestors,
      a FocusOut event is generated for descendant if FocusNotify events have
      been selected by the descendant.

SEE ALSO
      XtCallAcceptFocus(3Xt)
      X Toolkit Intrinsics - C Language Interface
      Xlib - C Language X Interface







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