root_geometry_manager() 												   root_geometry_manager()

Name
  root_geometry_manager - Shell class method called to negotiate shell geometry requests with a window manager.

Synopsis
  typedef XtGeometryResult (*XtGeometryHandler)(Widget, XtWidgetGeometry *,
  XtWidgetGeometry *);
	   Widget w;
	   XtWidgetGeometry *request;
	   XtWidgetGeometry *geometry_return;

Inputs
  w	    Specifies the shell widget making the request.

  request   Specifies the requested geometry.

Outputs
  geometry_return
	    Specifies the reply geometry.

Returns
  The window manager's reply: XtGeometryYes, XtGeometryNo, XtGeometryAlmost, or XtGeometryDone.

Availability
  Release 4 and later.

Description
  The  root_geometry_manager() method is registered on the root_geometry_manager field of a ShellClassExtensionRec structure with record_type
  NULLQUARK, which is itself registered on the extension field of the Shell class part structure.  The root_geometry_manager() method will be
  called  when a shell widget calls XtMakeGeometryRequest() or XtMakeResizeRequest(), and should negotiate the requested size with the window
  manager.

  The arguments to this method are the same as those passed to the geometry_manager() method.  The root_geometry_manager() method should pass
  the  geometry  request on to the window manager.  If the window manager permits the new geometry, the root_geometry_manager() should return
  XtGeometryYes; if the window manager denies the geometry request or it does not change the window geometry  within  some  timeout  interval
  (the	XtNwmTimeout resource for WMShell, for example), the root_geometry_manager() should return XtGeometryNo.  If the window manager makes
  some alternative geometry change, the root_geometry_manager() method may either return XtGeometryNo  and  handle  the  new  geometry	as  a
  resize,  or  may return XtGeometryAlmost in anticipation that the shell will accept the compromise.  If the compromise is not accepted, the
  new size must then be handled as a resize.

  Communication with a window manager is an asynchronous process, but the root_geometry_manager()  procedure  must  return  its  answer  syn-
  chronously.  It will have to issue its request and then block until the reply arrives.

  The  root_geometry_manager()	method is not chained.	It can be inherited by specifying XtInheritRootGeometryManager in the Shell extension
  record.  If there is no Shell extension record with record_type equal to NULLQUARK, then the Intrinsics will behave as if an extension  was
  specified with XtInheritRootGeometryManager.

  See  the Inter-Client Communications Conventions Manual for information on communicating with window managers.  See geometry_manager(4) for
  a description of the structures and the possible return values of this method.

Usage
  The root_geometry_manager() method of the Shell class itself handles communication with  ICCCM-compliant  window  managers.	It  sets  the
  appropriate  properties  to  make the geometry request, then uses XCheckIfEvent() to block until an ConfigureNotify event arrives in reply.
  This method also uses private functions internal to the Intrinsics in order to correctly handle the events.  Because of the complexity  and
  implementation-specific  nature  of  this  method,  classes  that  want to define a custom root_geometry_manager() method should make their
  requests to the window manager, and then call their superclass's method to make additional requests, block, and get the response.

See Also
  XtMakeGeometryRequest(1), XtMakeResizeRequest(1),
  Shell(3),
  geometry_manager(4).

Xt - Intrinsics Methods 												   root_geometry_manager()