Added global subclassing atom, used by tooltips and updown (not yet).

dlls/comctl32/commctrl.c

@@ -35,10 +35,11 @@
 
 HANDLE32 COMCTL32_hHeap = (HANDLE32)NULL;
 DWORD    COMCTL32_dwProcessesAttached = 0;
+LPSTR    COMCTL32_aSubclass = (LPSTR)NULL;
 
 
 /***********************************************************************
- * ComCtl32LibMain [Internal] Initializes the internal 'COMCTL32.DLL'.
+ * COMCTL32_LibMain [Internal] Initializes the internal 'COMCTL32.DLL'.
  *
  * PARAMS
  *     hinstDLL    [I] handle to the 'dlls' instance
@@ -51,7 +52,7 @@ DWORD    COMCTL32_dwProcessesAttached = 0;
  */
 
 BOOL32 WINAPI
-ComCtl32LibMain (HINSTANCE32 hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
+COMCTL32_LibMain (HINSTANCE32 hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 {
     TRACE (commctrl, "%x,%lx,%p\n", hinstDLL, fdwReason, lpvReserved);
 
@@ -62,6 +63,11 @@ ComCtl32LibMain (HINSTANCE32 hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 		COMCTL32_hHeap = HeapCreate (0, 0x10000, 0);
 		TRACE (commctrl, "Heap created: 0x%x\n", COMCTL32_hHeap);
 
+		/* add global subclassing atom (used by 'tooltip' and 'updown') */
+		COMCTL32_aSubclass = (LPSTR)(DWORD)GlobalAddAtom32A ("CC32SubclassInfo");
+		TRACE (commctrl, "Subclassing atom added: %p\n",
+		       COMCTL32_aSubclass);
+
 		/* register all Win95 common control classes */
 		ANIMATE_Register ();
 		HEADER_Register ();
@@ -103,6 +109,12 @@ ComCtl32LibMain (HINSTANCE32 hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 		TREEVIEW_Unregister ();
 		UPDOWN_Unregister ();
 
+		/* delete global subclassing atom */
+		GlobalDeleteAtom (LOWORD(COMCTL32_aSubclass));
+		TRACE (commctrl, "Subclassing atom deleted: %p\n",
+		       COMCTL32_aSubclass);
+		COMCTL32_aSubclass = (LPSTR)NULL;
+
 		/* destroy private heap */
 		HeapDestroy (COMCTL32_hHeap);
 		TRACE (commctrl, "Heap destroyed: 0x%x\n", COMCTL32_hHeap);
@@ -845,3 +857,4 @@ COMCTL32_DllGetVersion (DLLVERSIONINFO *pdvi)
 
     return S_OK;
 }
+