Canvas Config Dlg (Sim & Acct): Tooltips: Obj Max: Dynamic Update [2] Implementation
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 7.3

The new SimWS generation of OBJECT_MOVED callbacks is now used in the basic
Canvas Configuration Dialog (for the Simulation and Accounting views) to
update the indication of maximum SimObj coordinates in the view.  (These
values are currently shown only as tooltips on the "Canvas Width" and
"Canvas Height" labels).

OBJECT_MOVED, WS_OBJECT_ADDED and WS_OBJECT_REMOVED trigger a delayed
recomputation (via a QTimer) of the maximum object coordinates of the
workspace view being configured (Simulation or Accounting).

See especially these new methods:

  int callbackHandler (CallbackType, CallbackData*, void*);
  void schedServiceObjMove();
  void cancelServiceObjMove();
  void serviceObjMoveTimeout();

Also, there was a life-cycle error with the CanvasConfigDlg.
It remained instantiated after closing.  This has been fixed.

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