groundwork for an interface change

Add a new window-port interface function
     perminvent_info *
     update_invent_slot(winid window, int slot, perminvent_info *);

That should be nice and flexible and allow exchanges of useful
information between the core and the window port. Information
to be exchange can be easily modified in include/wintype.h as
things evolve.

Information useful to the core can be exchanged from the
window-port in struct to_core.

Information useful from the core to the window-port can be
passed in struct from_core.

I'm not going to update any docs until much later after things
are fully working and settled.

This also doesn't fix or have anything to do with existing
TTY_PERM_INVENT issues.

win/Qt/qt_bind.cpp

@@ -490,6 +490,17 @@ void NetHackQtBind::qt_update_inventory(int arg UNUSED)
     */
 }
 
+perminvent_info *NetHackQtBind::qt_update_invent_slot(
+    winid wid UNUSED,  /* window to use, must be of type NHW_MENU */
+    int inventory_slot UNUSED,                 /* slot id: 0 - info return to core */
+                                        /*          1 - gold slot */
+                                        /*          2 - 29 obj slots */
+    perminvent_info *pi UNUSED)
+{
+    NetHackQtWindow* window UNUSED =id_to_window[(int)wid];
+    return (perminvent_info *) 0;
+}
+
 void NetHackQtBind::qt_mark_synch()
 {
 }
@@ -1053,7 +1064,6 @@ struct window_procs Qt_procs = {
     nethack_qt_::NetHackQtBind::qt_end_menu,
     nethack_qt_::NetHackQtBind::qt_select_menu,
     genl_message_menu,      /* no need for Qt-specific handling */
-    nethack_qt_::NetHackQtBind::qt_update_inventory,
     nethack_qt_::NetHackQtBind::qt_mark_synch,
     nethack_qt_::NetHackQtBind::qt_wait_synch,
 #ifdef CLIPPING
@@ -1100,6 +1110,8 @@ struct window_procs Qt_procs = {
     genl_status_update,
 #endif
     genl_can_suspend_yes,
+    nethack_qt_::NetHackQtBind::qt_update_inventory,
+    nethack_qt_::NetHackQtBind::qt_update_invent_slot,
 };
 
 #ifndef WIN32

win/Qt/qt_bind.h

@@ -58,7 +58,6 @@ public:
 		const char *str, unsigned int itemflags);
 	static void qt_end_menu(winid wid, const char *prompt);
 	static int qt_select_menu(winid wid, int how, MENU_ITEM_P **menu_list);
-	static void qt_update_inventory(int);
 	static void qt_mark_synch();
 	static void qt_wait_synch();
 
@@ -89,6 +88,8 @@ public:
 
 	static void qt_outrip(winid wid, int how, time_t when);
 	static int qt_kbhit();
+	static void qt_update_inventory(int);
+        static perminvent_info *qt_update_invent_slot(winid, int, perminvent_info *);
 
 	static QWidget *mainWidget() { return main; }