- added a new method to all GUIs called mouse_enabled_changed_specific,

which notifies them that the mouse_enabled bit has changed.  Now that
  mouse_enabled can be initialized or modified by parameter events in
  addition to GUI events, the guis must be prepared for it.  I have pasted
  empty method definitions into mouse_enabled_changed_specific for all
  guis except for X11, which I did the right way.  The implementation
  of this function must use the argument "val" rather than reading the
  parameter.

bochs/main.cc

@@ -780,6 +780,12 @@ main(int argc, char *argv[])
 
   SIM->set_init_done (1);
 
+  // The set handler for mouse_enabled does not actually update the gui
+  // until init_done is set.  This forces the set handler to be called,
+  // which sets up the mouse enabled GUI-specific stuff correctly.
+  // Not a great solution but it works. BBD
+  bx_options.Omouse_enabled->set (bx_options.Omouse_enabled->get ());
+
   if (BX_SMP_PROCESSORS == 1) {
     // only one processor, run as fast as possible by not messing with
     // quantums and loops.