This fixes a crash that would happen when DeleteAllItems is called

when some items have attributes.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15902 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listctrl.cpp

@@ -367,9 +367,18 @@ void wxListCtrl::FreeAllInternalData()
         {
             wxListItemInternalData *data = GetInternalData(this, i);
             if (data)
+            {
                 delete data;
-        };
-    };
+                LV_ITEM item;
+                memset(&item, 0, sizeof(item));
+                item.iItem = i;
+                item.mask = LVIF_PARAM;
+                item.lParam = (LPARAM) 0;
+                BOOL result = ListView_SetItem(GetHwnd(), &item);
+            }
+        }
+        m_AnyInternalData = FALSE;
+    }
 }
 
 wxListCtrl::~wxListCtrl()
@@ -1196,6 +1205,7 @@ bool wxListCtrl::DeleteItem(long item)
 // Deletes all items
 bool wxListCtrl::DeleteAllItems()
 {
+    FreeAllInternalData();
     return ListView_DeleteAllItems(GetHwnd()) != 0;
 }