use custom class which doesn't redraw everything on resize instead of SysTabCtl32...

[wxWidgets.git] / src / msw / listctrl.cpp

diff --git a/src/msw/listctrl.cpp b/src/msw/listctrl.cpp
index 0eeef36021427b55665e71693ad95b4530640879..90c122a4cce51ee2403b22d9fd156bb9dd422a6b 100644 (file)
--- a/src/msw/listctrl.cpp
+++ b/src/msw/listctrl.cpp
@@ -480,8 +480,6 @@ void wxListCtrl::FreeAllInternalData()
         m_ignoreChangeMessages = false;
 
         m_AnyInternalData = false;
-
-        m_count = 0;
     }
 }
 
@@ -497,9 +495,12 @@ wxListCtrl::~wxListCtrl()
         m_textCtrl = NULL;
     }
 
-    if (m_ownsImageListNormal) delete m_imageListNormal;
-    if (m_ownsImageListSmall) delete m_imageListSmall;
-    if (m_ownsImageListState) delete m_imageListState;
+    if (m_ownsImageListNormal)
+        delete m_imageListNormal;
+    if (m_ownsImageListSmall)
+        delete m_imageListSmall;
+    if (m_ownsImageListState)
+        delete m_imageListState;
 }
 
 // ----------------------------------------------------------------------------
@@ -1232,7 +1233,7 @@ bool wxListCtrl::DeleteItem(long item)
         return false;
     }
 
-    m_count -= 1;
+    m_count--;
     wxASSERT_MSG( m_count == ListView_GetItemCount(GetHwnd()),
                   wxT("m_count should match ListView_GetItemCount"));
 
@@ -1264,7 +1265,6 @@ bool wxListCtrl::DeleteItem(long item)
 // Deletes all items
 bool wxListCtrl::DeleteAllItems()
 {
-       m_count = 0;
     return ListView_DeleteAllItems(GetHwnd()) != 0;
 }
 
@@ -1819,7 +1819,8 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         // ignored for efficiency.  It is done here because the internal data is in the
         // process of being deleted so we don't want to try and access it below.
         if ( m_ignoreChangeMessages &&
-             ( (nmLV->hdr.code == LVN_ITEMCHANGED) || (nmLV->hdr.code == LVN_ITEMCHANGING)))
+             ( (nmLV->hdr.code == LVN_ITEMCHANGED) ||
+               (nmLV->hdr.code == LVN_ITEMCHANGING)) )
         {
             return true;
         }
@@ -1925,10 +1926,12 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 break;
 
             case LVN_DELETEITEM:
-                if (m_count == 0)
-                    // this should be prevented by the post-processing code below,
-                    // but "just in case"
+                if ( m_count == 0 )
+                {
+                    // this should be prevented by the post-processing code
+                    // below, but "just in case"
                     return false;
+                }
 
                 eventType = wxEVT_COMMAND_LIST_DELETE_ITEM;
                 event.m_itemIndex = iItem;
@@ -2194,6 +2197,10 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             // also, we may free all user data now (couldn't do it before as
             // the user should have access to it in OnDeleteAllItems() handler)
             FreeAllInternalData();
+
+            // the control is empty now, synchronize the cached number of items
+            // with the real one
+            m_count = 0;
             return true;
 
         case LVN_ENDLABELEDITA: