hpux man page for xtunmanageb

XtUnmanageChildren()													      XtUnmanageChildren()

Name
  XtUnmanageChildren - remove a list of children from a parent widget's managed list.

Synopsis
  void XtUnmanageChildren(children, num_children)
	 WidgetList children;
	 Cardinal num_children;

Inputs
  children   Specifies an array of child widgets.  Each child must be of class RectObj or any subclass thereof.

  num_children
	     Specifies the number of elements in children.

Description
  XtUnmanageChildren()	unmaps	the  specified	widgets and removes them from their parent's geometry management.  The widgets will disappear
  from the screen, and (depending on its parent) may no longer have screen space allocated for them.

  Each of the widgets in the children array must have the same parent.

  See the "Algorithm" section below for full details of the widget unmanagement procedure.

Usage
  Unmanaging widgets is the usual method for temporarily making them invisible.  They can be re-managed with XtManageChildren().

  You can unmap a widget, but leave it under geometry management by calling XtUnmapWidget().  You  can	destroy  a  widget's  window  without
  destroying the widget by calling XtUnrealizeWidget().  You can destroy a widget completely with XtDestroyWidget().

  If  you  are	only going to unmanage a single widget, it is more convenient to call XtUnmanageChild().  It is often more convenient to call
  XtUnmanageChild() several times than it is to declare and initialize an array of widgets to pass to XtUnmanageChildren().  Calling XtUnman-
  ageChildren() is more efficient, however, because it only calls the parent's change_managed() method once.

Algorithm
  XtUnmanageChildren() performs the following:

  o  Issues an error if the children do not all have the same parent or if the parent is not a subclass of compositeWidgetClass.

  o  Returns immediately if the common parent is being destroyed; otherwise, for each unique child on the list, XtUnmanageChildren() performs
     the following:

     -	Ignores the child if it already is unmanaged or is being destroyed.

     -	Otherwise, if the child is realized, it makes it nonvisible by unmapping it.

  o  Calls the change_managed() method of the widgets' parent if the parent is realized.

Structures
  The WidgetList type is simply an array of widgets:

     typedef Widget *WidgetList;

See Also
  XtDestroyWidget(1), XtIsManaged(1), XtManageChild(1), XtManageChildren(1), XtUnmanageChild(1).

Xt - Geometry Management												      XtUnmanageChildren()