X11R7.4 - man page for xtsetkeyboardfocus (x11r4 section 3)
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XtSetKeyboardFocus(3) XT FUNCTIONS XtSetKeyboardFocus(3)
XtSetKeyboardFocus - focus events on a child widget
XtSetKeyboardFocus(Widget subtree, Widget descendant);
subtree 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.
Specifies the widget for which the keyboard focus is to be set.
If a future KeyPress or KeyRelease event occurs within the specified subtree, XtSet-
KeyboardFocus causes XtDispatchEvent to remap and send the event to the specified descen-
When there is no modal cascade, keyboard events can occur within a widget W in one of
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
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
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.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.0.5 XtSetKeyboardFocus(3)
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