xtcallacceptfocus(3) [debian man page]

XtCallAcceptFocus(3)						   XT FUNCTIONS 					      XtCallAcceptFocus(3)

NAME

       XtCallAcceptFocus - calla widget's accept_focus procedure

SYNTAX

       Boolean XtCallAcceptFocus(Widget w, Time *time);

ARGUMENTS

       time	 Specifies the X time of the event that is causing the accept focus.

       w	 Specifies the widget.

DESCRIPTION

       The XtCallAcceptFocus function calls the specified widget's accept_focus procedure, passing it the specified widget and time, and returns
       what the accept_focus procedure returns.  If accept_focus is NULL, XtCallAcceptFocus returns False.

SEE ALSO

       XtSetKeyboardFocus(3)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11							    libXt 1.1.3 					      XtCallAcceptFocus(3)

accept_focus()															    accept_focus()

Name
  accept_focus - Core class method for accepting or rejecting the keyboard focus.

Synopsis
  typedef Boolean (*XtAcceptFocusProc)(Widget, Time *);
	 Widget w;
	 Time *time;

Inputs
  w	    Specifies the widget.

  time	    Specifies the X time of the event causing the parent to offer focus to the child.

Returns
  True if the child actually took the focus; False otherwise.

Description
  The  accept_focus()  method  is registered on the accept_focus field of the Core class part structure and is invoked by XtCallAcceptFocus()
  when a parent widget wants to offer keyboard focus to a widget.  If the widget wants the keyboard focus, it should take it  with  the  Xlib
  function XSetInputFocus() and return True.  If the widget does not currently want the focus, it should return False.

  The ICCCM requires that a widget use Parent for the revert_to argument to XSetInputFocus().

  The  accept_focus()  method is not chained.  If a widget class does not define an accept_focus() method, it can use XtInheritAcceptFocus to
  inherit the method from its superclass.  If the widget never wants the focus, it should have an accept_focus field of NULL.

Usage
  Note that this method is an invitation to take the focus, not notification that focus has changed, and not a command to take the focus.

  A widget that needs to know when it loses the focus can specify translations or event handlers for FocusIn and FocusOut events.

  None of the Intrinsics or Xaw widget classes define an accept_focus() method, and none of them ever call XtCallAcceptFocus().

  An application that wants to direct keyboard events to a particular widget should use XtSetKeyboardFocus().

See Also
  XtCallAcceptFocus(1), XtSetKeyboardFocus(1).

Xt - Intrinsics Methods 													    accept_focus()