Correct g++ 4.x warnings about suggested explicit braces.

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

diff --git a/src/msw/listctrl.cpp b/src/msw/listctrl.cpp
index ec5add16ea163eeb5e53ed93b8d4a757d3ad2184..71fb0231dfa634baa21520ec9ebecbe7082912ea 100644 (file)
--- a/src/msw/listctrl.cpp
+++ b/src/msw/listctrl.cpp
@@ -42,6 +42,7 @@
 #include "wx/vector.h"
 
 #include "wx/msw/private.h"
+#include "wx/msw/private/keyboard.h"
 
 #if defined(__WXWINCE__) && !defined(__HANDHELDPC__)
   #include <ole2.h>
@@ -497,8 +498,7 @@ void wxListCtrl::DeleteEditControl()
     {
         m_textCtrl->UnsubclassWin();
         m_textCtrl->SetHWND(0);
-        delete m_textCtrl;
-        m_textCtrl = NULL;
+        wxDELETE(m_textCtrl);
     }
 }
 
@@ -1465,7 +1465,9 @@ bool wxListCtrl::DeleteItem(long item)
 // Deletes all items
 bool wxListCtrl::DeleteAllItems()
 {
-    return ListView_DeleteAllItems(GetHwnd()) != 0;
+    // Calling ListView_DeleteAllItems() will always generate an event but we
+    // shouldn't do it if the control is empty 
+    return !GetItemCount() || ListView_DeleteAllItems(GetHwnd()) != 0;
 }
 
 // Deletes all items
@@ -1539,8 +1541,7 @@ wxTextCtrl* wxListCtrl::EditLabel(long item, wxClassInfo* textControlClass)
     if ( !hWnd )
     {
         // failed to start editing
-        delete m_textCtrl;
-        m_textCtrl = NULL;
+        wxDELETE(m_textCtrl);
 
         return NULL;
     }
@@ -1561,10 +1562,21 @@ bool wxListCtrl::EndEditLabel(bool cancel)
     if ( !hwnd )
         return false;
 
-    // We shouldn't destroy the control ourselves according to MSDN, which
-    // proposes WM_CANCELMODE to do this, but it doesn't seem to work so
-    // emulate the corresponding user action instead.
-    ::SendMessage(hwnd, WM_KEYDOWN, cancel ? VK_ESCAPE : VK_RETURN, 0);
+    // Newer versions of Windows have a special message for cancelling editing,
+    // use it if available.
+#ifdef ListView_CancelEditLabel
+    if ( cancel && (wxApp::GetComCtl32Version() >= 600) )
+    {
+        ListView_CancelEditLabel(GetHwnd());
+    }
+    else
+#endif // ListView_CancelEditLabel
+    {
+        // We shouldn't destroy the control ourselves according to MSDN, which
+        // proposes WM_CANCELMODE to do this, but it doesn't seem to work so
+        // emulate the corresponding user action instead.
+        ::SendMessage(hwnd, WM_KEYDOWN, cancel ? VK_ESCAPE : VK_RETURN, 0);
+    }
 
     return true;
 }
@@ -2226,23 +2238,6 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 eventType = wxEVT_COMMAND_LIST_DELETE_ITEM;
                 event.m_itemIndex = iItem;
 
-                // delete the associated internal data
-                if ( wxMSWListItemData *data = MSWGetItemData(iItem) )
-                {
-                    const unsigned count = m_internalData.size();
-                    for ( unsigned n = 0; n < count; n++ )
-                    {
-                        if ( m_internalData[n] == data )
-                        {
-                            m_internalData.erase(m_internalData.begin() + n);
-                            delete data;
-                            data = NULL;
-                            break;
-                        }
-                    }
-
-                    wxASSERT_MSG( !data, "invalid internal data pointer?" );
-                }
                 break;
 
             case LVN_INSERTITEM:
@@ -2330,10 +2325,15 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                     {
                         eventType = wxEVT_COMMAND_LIST_KEY_DOWN;
 
-                        // wxCharCodeMSWToWX() returns 0 if the key is an ASCII
-                        // value which should be used as is
-                        int code = wxCharCodeMSWToWX(wVKey);
-                        event.m_code = code ? code : wVKey;
+                        event.m_code = wxMSWKeyboard::VKToWX(wVKey);
+
+                        if ( event.m_code == WXK_NONE )
+                        {
+                            // We can't translate this to a standard key code,
+                            // until support for Unicode key codes is added to
+                            // wxListEvent we just ignore them.
+                            return false;
+                        }
                     }
 
                     event.m_itemIndex =
@@ -2593,6 +2593,27 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             m_count = 0;
             return true;
 
+        case LVN_DELETEITEM:
+            // Delete the associated internal data. Notice that this can be
+            // done only after the event has been handled as the data could be
+            // accessed during the handling of the event.
+            if ( wxMSWListItemData *data = MSWGetItemData(event.m_itemIndex) )
+            {
+                const unsigned count = m_internalData.size();
+                for ( unsigned n = 0; n < count; n++ )
+                {
+                    if ( m_internalData[n] == data )
+                    {
+                        m_internalData.erase(m_internalData.begin() + n);
+                        wxDELETE(data);
+                        break;
+                    }
+                }
+
+                wxASSERT_MSG( !data, "invalid internal data pointer?" );
+            }
+            break;
+
         case LVN_ENDLABELEDITA:
         case LVN_ENDLABELEDITW:
             // logic here is inverted compared to all the other messages