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 XtDis-
       patchEvent 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:

       +o    W has the X input focus.

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

       +o    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 key-
       board events if an ancestor of W is in the active subset
       of the modal cascade and one or more of the previous con-
       ditions 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 FocusNo-
       tify events have been selected by the descendant.  Simi-
       larly, when W loses the X input focus or the keyboard
       focus for one of its ancestors, a FocusOut event is gener-
       ated 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