disable layout computation for an XmtLayout widget.
void XmtLayoutDisableLayout(Widget w)
void XmtLayoutEnableLayout(Widget w)
stops the XmtLayout widget w
recomputing the arrangement of its children when it normally would.
restores normal layout computation for
Use these functions if you are making an number of changes to the children of
(managing, unmanaging, repositioning, resizing) that would cause
to recompute the children's arrangement. By batching all the changes
significant unnecessary computation can be avoided.
Calls to these functions are counted and may be nested-layout will not be
re-enabled until XmtLayoutEnableLayout()
has been called as many times
Chapter 19, The Layout Widget: The Details