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
Licensed material--property of copyright holder(s) Page 1
X Version 11 (Release 3
X)
tSetKeyboardFocus(3Xt)
Xlib - C Language X Interface
Licensed material--property of copyright holder(s) Page 2