add support for alpha in color dialog on OSX, see #14127

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

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index 53d205ed73934ad9ac643d985baeb76ffd711728..0ac6f626c0ccec0da55434dc010c097c2f6d5ea8 100644 (file)
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "treectrl.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -30,65 +26,158 @@
 
 #if wxUSE_TREECTRL
 
 
 #if wxUSE_TREECTRL
 

-#include "wx/msw/private.h"
+#include "wx/treectrl.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
+    #include "wx/msw/missing.h"
+    #include "wx/dynarray.h"
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/settings.h"
+#endif

 
 

-// Set this to 1 to be _absolutely_ sure that repainting will work for all
-// comctl32.dll versions
-#define wxUSE_COMCTL32_SAFELY 0
+#include "wx/dynlib.h"
+#include "wx/msw/private.h"

 
 

-#include "wx/app.h"
-#include "wx/log.h"
-#include "wx/dynarray.h"

 #include "wx/imaglist.h"
 #include "wx/imaglist.h"

-#include "wx/settings.h"
-#include "wx/msw/treectrl.h"

 #include "wx/msw/dragimag.h"
 #include "wx/msw/dragimag.h"

-
-// include <commctrl.h> "properly"
-#include "wx/msw/wrapcctl.h"
+#include "wx/msw/uxtheme.h"

 
 // macros to hide the cast ugliness
 // --------------------------------
 
 
 // macros to hide the cast ugliness
 // --------------------------------
 

-// ptr is the real item id, i.e. wxTreeItemId::m_pItem
-#define HITEM_PTR(ptr)     (HTREEITEM)(ptr)
+// get HTREEITEM from wxTreeItemId
+#define HITEM(item)     ((HTREEITEM)(((item).m_pItem)))
+
+
+// older SDKs are missing these
+#ifndef TVN_ITEMCHANGINGA
+
+#define TVN_ITEMCHANGINGA (TVN_FIRST-16)
+#define TVN_ITEMCHANGINGW (TVN_FIRST-17)
+
+typedef struct tagNMTVITEMCHANGE
+{
+    NMHDR hdr;
+    UINT uChanged;
+    HTREEITEM hItem;
+    UINT uStateNew;
+    UINT uStateOld;
+    LPARAM lParam;
+} NMTVITEMCHANGE;
+
+#endif
+
+
+// this helper class is used on vista systems for preventing unwanted
+// item state changes in the vista tree control.  It is only effective in
+// multi-select mode on vista systems.
+
+// The vista tree control includes some new code that originally broke the
+// multi-selection tree, causing seemingly spurious item selection state changes
+// during Shift or Ctrl-click item selection. (To witness the original broken
+// behaviour, simply make IsLocked() below always return false). This problem was
+// solved by using the following class to 'unlock' an item's selection state.
+
+class TreeItemUnlocker
+{
+public:
+    // unlock a single item
+    TreeItemUnlocker(HTREEITEM item)
+    {
+        m_oldUnlockedItem = ms_unlockedItem;
+        ms_unlockedItem = item;
+    }
+
+    // unlock all items, don't use unless absolutely necessary
+    TreeItemUnlocker()
+    {
+        m_oldUnlockedItem = ms_unlockedItem;
+        ms_unlockedItem = (HTREEITEM)-1;
+    }
+
+    // lock everything back
+    ~TreeItemUnlocker() { ms_unlockedItem = m_oldUnlockedItem; }
+
+
+    // check if the item state is currently locked
+    static bool IsLocked(HTREEITEM item)
+        { return ms_unlockedItem != (HTREEITEM)-1 && item != ms_unlockedItem; }
+
+private:
+    static HTREEITEM ms_unlockedItem;
+    HTREEITEM m_oldUnlockedItem;
+
+    wxDECLARE_NO_COPY_CLASS(TreeItemUnlocker);
+};
+
+HTREEITEM TreeItemUnlocker::ms_unlockedItem = NULL;
+
+// another helper class: set the variable to true during its lifetime and reset
+// it to false when it is destroyed
+//
+// it is currently always used with wxTreeCtrl::m_changingSelection
+class TempSetter
+{
+public:
+    TempSetter(bool& var) : m_var(var)
+    {
+        wxASSERT_MSG( !m_var, "variable shouldn't be already set" );
+        m_var = true;
+    }

 
 

-// item here is a wxTreeItemId
-#define HITEM(item)     HITEM_PTR((item).m_pItem)
+    ~TempSetter()
+    {
+        m_var = false;
+    }
+
+private:
+    bool& m_var;

 
 

-// the native control doesn't support multiple selections under MSW and we
-// have 2 ways to emulate them: either using TVS_CHECKBOXES style and let
-// checkboxes be the selection status (checked == selected) or by really
-// emulating everything, i.e. intercepting mouse and key events &c. The first
-// approach is much easier but doesn't work with comctl32.dll < 4.71 and also
-// looks quite ugly.
-#define wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE 0
+    wxDECLARE_NO_COPY_CLASS(TempSetter);
+};

 
 // ----------------------------------------------------------------------------
 // private functions
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // private functions
 // ----------------------------------------------------------------------------
 

-// wrapper for TreeView_HitTest
-static HTREEITEM GetItemFromPoint(HWND hwndTV, int x, int y)
+namespace
+{
+
+// Work around a problem with TreeView_GetItemRect() when using MinGW/Cygwin:
+// it results in warnings about breaking strict aliasing rules because HITEM is
+// passed via a RECT pointer, so use a union to avoid them and define our own
+// version of the standard macro using it.
+union TVGetItemRectParam

 {
 {

-    TV_HITTESTINFO tvht;
-    tvht.pt.x = x;
-    tvht.pt.y = y;
+    RECT rect;
+    HTREEITEM hItem;
+};

 
 

-    return (HTREEITEM)TreeView_HitTest(hwndTV, &tvht);
+inline bool
+wxTreeView_GetItemRect(HWND hwnd,
+                       HTREEITEM hItem,
+                       TVGetItemRectParam& param,
+                       BOOL fItemRect)
+{
+    param.hItem = hItem;
+    return ::SendMessage(hwnd, TVM_GETITEMRECT, fItemRect,
+                        (LPARAM)&param) == TRUE;

 }
 
 }
 

-#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+} // anonymous namespace

 
 // wrappers for TreeView_GetItem/TreeView_SetItem
 static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
 {
 
 // wrappers for TreeView_GetItem/TreeView_SetItem
 static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
 {

-

     TV_ITEM tvi;
     tvi.mask = TVIF_STATE | TVIF_HANDLE;
     tvi.stateMask = TVIS_SELECTED;
     tvi.hItem = hItem;
 
     TV_ITEM tvi;
     tvi.mask = TVIF_STATE | TVIF_HANDLE;
     tvi.stateMask = TVIS_SELECTED;
     tvi.hItem = hItem;
 

+    TreeItemUnlocker unlocker(hItem);
+

     if ( !TreeView_GetItem(hwndTV, &tvi) )
     {
         wxLogLastError(wxT("TreeView_GetItem"));
     if ( !TreeView_GetItem(hwndTV, &tvi) )
     {
         wxLogLastError(wxT("TreeView_GetItem"));


@@ -105,6 +194,8 @@ static bool SelectItem(HWND hwndTV, HTREEITEM hItem, bool select = true)
     tvi.state = select ? TVIS_SELECTED : 0;
     tvi.hItem = hItem;
 
     tvi.state = select ? TVIS_SELECTED : 0;
     tvi.hItem = hItem;
 

+    TreeItemUnlocker unlocker(hItem);
+

     if ( TreeView_SetItem(hwndTV, &tvi) == -1 )
     {
         wxLogLastError(wxT("TreeView_SetItem"));
     if ( TreeView_SetItem(hwndTV, &tvi) == -1 )
     {
         wxLogLastError(wxT("TreeView_SetItem"));


@@ -125,31 +216,54 @@ static inline void ToggleItemSelection(HWND hwndTV, HTREEITEM htItem)
 }
 
 // helper function which selects all items in a range and, optionally,
 }
 
 // helper function which selects all items in a range and, optionally,

-// unselects all others
-static void SelectRange(HWND hwndTV,
+// deselects all the other ones
+//
+// returns true if the selection changed at all or false if nothing changed
+
+// flags for SelectRange()
+enum
+{
+    SR_SIMULATE = 1,        // don't do anything, just return true or false
+    SR_UNSELECT_OTHERS = 2  // deselect the items not in range
+};
+
+static bool SelectRange(HWND hwndTV,

                         HTREEITEM htFirst,
                         HTREEITEM htLast,
                         HTREEITEM htFirst,
                         HTREEITEM htLast,

-                        bool unselectOthers = true)
+                        int flags)

 {
     // find the first (or last) item and select it
 {
     // find the first (or last) item and select it

+    bool changed = false;

     bool cont = true;
     HTREEITEM htItem = (HTREEITEM)TreeView_GetRoot(hwndTV);
     bool cont = true;
     HTREEITEM htItem = (HTREEITEM)TreeView_GetRoot(hwndTV);

+

     while ( htItem && cont )
     {
         if ( (htItem == htFirst) || (htItem == htLast) )
         {
             if ( !IsItemSelected(hwndTV, htItem) )
             {
     while ( htItem && cont )
     {
         if ( (htItem == htFirst) || (htItem == htLast) )
         {
             if ( !IsItemSelected(hwndTV, htItem) )
             {

-                SelectItem(hwndTV, htItem);
+                if ( !(flags & SR_SIMULATE) )
+                {
+                    SelectItem(hwndTV, htItem);
+                }
+
+                changed = true;

             }
 
             cont = false;
         }
             }
 
             cont = false;
         }

-        else
+        else // not first or last

         {
         {

-            if ( unselectOthers && IsItemSelected(hwndTV, htItem) )
+            if ( flags & SR_UNSELECT_OTHERS )

             {
             {

-                UnselectItem(hwndTV, htItem);
+                if ( IsItemSelected(hwndTV, htItem) )
+                {
+                    if ( !(flags & SR_SIMULATE) )
+                        UnselectItem(hwndTV, htItem);
+
+                    changed = true;
+                }

             }
         }
 
             }
         }
 


@@ -162,7 +276,12 @@ static void SelectRange(HWND hwndTV,
     {
         if ( !IsItemSelected(hwndTV, htItem) )
         {
     {
         if ( !IsItemSelected(hwndTV, htItem) )
         {

-            SelectItem(hwndTV, htItem);
+            if ( !(flags & SR_SIMULATE) )
+            {
+                SelectItem(hwndTV, htItem);
+            }
+
+            changed = true;

         }
 
         cont = (htItem != htFirst) && (htItem != htLast);
         }
 
         cont = (htItem != htFirst) && (htItem != htLast);


@@ -170,14 +289,19 @@ static void SelectRange(HWND hwndTV,
         htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);
     }
 
         htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);
     }
 

-    // unselect the rest
-    if ( unselectOthers )
+    // optionally deselect the rest
+    if ( flags & SR_UNSELECT_OTHERS )

     {
         while ( htItem )
         {
             if ( IsItemSelected(hwndTV, htItem) )
             {
     {
         while ( htItem )
         {
             if ( IsItemSelected(hwndTV, htItem) )
             {

-                UnselectItem(hwndTV, htItem);
+                if ( !(flags & SR_SIMULATE) )
+                {
+                    UnselectItem(hwndTV, htItem);
+                }
+
+                changed = true;

             }
 
             htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);
             }
 
             htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);


@@ -186,66 +310,68 @@ static void SelectRange(HWND hwndTV,
 
     // seems to be necessary - otherwise the just selected items don't always
     // appear as selected
 
     // seems to be necessary - otherwise the just selected items don't always
     // appear as selected

-    UpdateWindow(hwndTV);
+    if ( !(flags & SR_SIMULATE) )
+    {
+        UpdateWindow(hwndTV);
+    }
+
+    return changed;

 }
 
 // helper function which tricks the standard control into changing the focused
 // item without changing anything else (if someone knows why Microsoft doesn't
 // allow to do it by just setting TVIS_FOCUSED flag, please tell me!)
 }
 
 // helper function which tricks the standard control into changing the focused
 // item without changing anything else (if someone knows why Microsoft doesn't
 // allow to do it by just setting TVIS_FOCUSED flag, please tell me!)

-static void SetFocus(HWND hwndTV, HTREEITEM htItem)
+//
+// returns true if the focus was changed, false if the given item was already
+// the focused one
+static bool SetFocus(HWND hwndTV, HTREEITEM htItem)

 {
     // the current focus
     HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(hwndTV);
 
 {
     // the current focus
     HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(hwndTV);
 

+    if ( htItem == htFocus )
+        return false;
+

     if ( htItem )
     {
     if ( htItem )
     {

-        // set the focus
-        if ( htItem != htFocus )
-        {
-            // remember the selection state of the item
-            bool wasSelected = IsItemSelected(hwndTV, htItem);
+        // remember the selection state of the item
+        bool wasSelected = IsItemSelected(hwndTV, htItem);

 
 

-            if ( htFocus && IsItemSelected(hwndTV, htFocus) )
-            {
-                // prevent the tree from unselecting the old focus which it
-                // would do by default (TreeView_SelectItem unselects the
-                // focused item)
-                TreeView_SelectItem(hwndTV, 0);
-                SelectItem(hwndTV, htFocus);
-            }
+        if ( htFocus && IsItemSelected(hwndTV, htFocus) )
+        {
+            // prevent the tree from unselecting the old focus which it
+            // would do by default (TreeView_SelectItem unselects the
+            // focused item)
+            TreeView_SelectItem(hwndTV, 0);
+            SelectItem(hwndTV, htFocus);
+        }

 
 

-            TreeView_SelectItem(hwndTV, htItem);
+        TreeView_SelectItem(hwndTV, htItem);

 
 

-            if ( !wasSelected )
-            {
-                // need to clear the selection which TreeView_SelectItem() gave
-                // us
-                UnselectItem(hwndTV, htItem);
-            }
-            //else: was selected, still selected - ok
+        if ( !wasSelected )
+        {
+            // need to clear the selection which TreeView_SelectItem() gave
+            // us
+            UnselectItem(hwndTV, htItem);

         }
         }

-        //else: nothing to do, focus already there
+        //else: was selected, still selected - ok

     }
     }

-    else
+    else // reset focus

     {
     {

-        if ( htFocus )
-        {
-            bool wasFocusSelected = IsItemSelected(hwndTV, htFocus);
+        bool wasFocusSelected = IsItemSelected(hwndTV, htFocus);

 
 

-            // just clear the focus
-            TreeView_SelectItem(hwndTV, 0);
+        // just clear the focus
+        TreeView_SelectItem(hwndTV, 0);

 
 

-            if ( wasFocusSelected )
-            {
-                // restore the selection state
-                SelectItem(hwndTV, htFocus);
-            }
+        if ( wasFocusSelected )
+        {
+            // restore the selection state
+            SelectItem(hwndTV, htFocus);

         }
         }

-        //else: nothing to do, no focus already

     }
     }

-}

 
 

-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+    return true;
+}

 
 // ----------------------------------------------------------------------------
 // private classes
 
 // ----------------------------------------------------------------------------
 // private classes


@@ -271,29 +397,128 @@ struct wxTreeViewItem : public TV_ITEM
     }
 };
 
     }
 };
 

+// ----------------------------------------------------------------------------
+// This class is our userdata/lParam for the TV_ITEMs stored in the treeview.
+//
+// We need this for a couple of reasons:
+//
+// 1) This class is needed for support of different images: the Win32 common
+// control natively supports only 2 images (the normal one and another for the
+// selected state). We wish to provide support for 2 more of them for folder
+// items (i.e. those which have children): for expanded state and for expanded
+// selected state. For this we use this structure to store the additional items
+// images.
+//
+// 2) This class is also needed to hold the HITEM so that we can sort
+// it correctly in the MSW sort callback.
+//
+// In addition it makes other workarounds such as this easier and helps
+// simplify the code.
+// ----------------------------------------------------------------------------
+
+class wxTreeItemParam
+{
+public:
+    wxTreeItemParam()
+    {
+        m_data = NULL;
+
+        for ( size_t n = 0; n < WXSIZEOF(m_images); n++ )
+        {
+            m_images[n] = -1;
+        }
+    }
+
+    // dtor deletes the associated data as well
+    virtual ~wxTreeItemParam() { delete m_data; }
+
+    // accessors
+        // get the real data associated with the item
+    wxTreeItemData *GetData() const { return m_data; }
+        // change it
+    void SetData(wxTreeItemData *data) { m_data = data; }
+
+        // do we have such image?
+    bool HasImage(wxTreeItemIcon which) const { return m_images[which] != -1; }
+        // get image, falling back to the other images if this one is not
+        // specified
+    int GetImage(wxTreeItemIcon which) const
+    {
+        int image = m_images[which];
+        if ( image == -1 )
+        {
+            switch ( which )
+            {
+                case wxTreeItemIcon_SelectedExpanded:
+                    // We consider that expanded icon is more important than
+                    // selected so test for it first.
+                    image = m_images[wxTreeItemIcon_Expanded];
+                    if ( image == -1 )
+                        image = m_images[wxTreeItemIcon_Selected];
+                    if ( image != -1 )
+                        break;
+                    //else: fall through
+
+                case wxTreeItemIcon_Selected:
+                case wxTreeItemIcon_Expanded:
+                    image = m_images[wxTreeItemIcon_Normal];
+                    break;
+
+                case wxTreeItemIcon_Normal:
+                    // no fallback
+                    break;
+
+                default:
+                    wxFAIL_MSG( wxT("unsupported wxTreeItemIcon value") );
+            }
+        }
+
+        return image;
+    }
+        // change the given image
+    void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
+
+        // get item
+    const wxTreeItemId& GetItem() const { return m_item; }
+        // set item
+    void SetItem(const wxTreeItemId& item) { m_item = item; }
+
+protected:
+    // all the images associated with the item
+    int m_images[wxTreeItemIcon_Max];
+
+    // item for sort callbacks
+    wxTreeItemId m_item;
+
+    // the real client data
+    wxTreeItemData *m_data;
+
+    wxDECLARE_NO_COPY_CLASS(wxTreeItemParam);
+};
+

 // wxVirutalNode is used in place of a single root when 'hidden' root is
 // specified.
 class wxVirtualNode : public wxTreeViewItem
 {
 public:
 // wxVirutalNode is used in place of a single root when 'hidden' root is
 // specified.
 class wxVirtualNode : public wxTreeViewItem
 {
 public:

-    wxVirtualNode(wxTreeItemData *data)
+    wxVirtualNode(wxTreeItemParam *param)

         : wxTreeViewItem(TVI_ROOT, 0)
     {
         : wxTreeViewItem(TVI_ROOT, 0)
     {

-        m_data = data;
+        m_param = param;

     }
 
     ~wxVirtualNode()
     {
     }
 
     ~wxVirtualNode()
     {

-        delete m_data;
+        delete m_param;

     }
 
     }
 

-    wxTreeItemData *GetData() const { return m_data; }
-    void SetData(wxTreeItemData *data) { delete m_data; m_data = data; }
+    wxTreeItemParam *GetParam() const { return m_param; }
+    void SetParam(wxTreeItemParam *param) { delete m_param; m_param = param; }

 
 private:
 
 private:

-    wxTreeItemData *m_data;
+    wxTreeItemParam *m_param;

 
 

-    DECLARE_NO_COPY_CLASS(wxVirtualNode)
+    wxDECLARE_NO_COPY_CLASS(wxVirtualNode);

 };
 
 #ifdef __VISUALC__
 };
 
 #ifdef __VISUALC__


@@ -316,6 +541,11 @@ public:
         m_tree = tree;
     }
 
         m_tree = tree;
     }
 

+    // give it a virtual dtor: not really needed as the class is never used
+    // polymorphically and not even allocated on heap at all, but this is safer
+    // (in case it ever is) and silences the compiler warnings for now
+    virtual ~wxTreeTraversal() { }
+

     // do traverse the tree: visit all items (recursively by default) under the
     // given one; return true if all items were traversed or false if the
     // traversal was aborted because OnVisit returned false
     // do traverse the tree: visit all items (recursively by default) under the
     // given one; return true if all items were traversed or false if the
     // traversal was aborted because OnVisit returned false


@@ -333,7 +563,7 @@ private:
 
     const wxTreeCtrl *m_tree;
 
 
     const wxTreeCtrl *m_tree;
 

-    DECLARE_NO_COPY_CLASS(wxTreeTraversal)
+    wxDECLARE_NO_COPY_CLASS(wxTreeTraversal);

 };
 
 // internal class for getting the selected items
 };
 
 // internal class for getting the selected items


@@ -346,22 +576,21 @@ public:
         {
             m_selections.Empty();
 
         {
             m_selections.Empty();
 

-            DoTraverse(tree->GetRootItem());
+            if (tree->GetCount() > 0)
+                DoTraverse(tree->GetRootItem());

         }
 
     virtual bool OnVisit(const wxTreeItemId& item)
     {
         }
 
     virtual bool OnVisit(const wxTreeItemId& item)
     {

+        const wxTreeCtrl * const tree = GetTree();
+

         // can't visit a virtual node.
         // can't visit a virtual node.

-        if ( (GetTree()->GetRootItem() == item) && (GetTree()->GetWindowStyle() & wxTR_HIDE_ROOT))
+        if ( (tree->GetRootItem() == item) && tree->HasFlag(wxTR_HIDE_ROOT) )

         {
             return true;
         }
 
         {
             return true;
         }
 

-#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-        if ( GetTree()->IsItemChecked(item) )
-#else
-        if ( ::IsItemSelected(GetHwndOf(GetTree()), HITEM(item)) )
-#endif
+        if ( ::IsItemSelected(GetHwndOf(tree), HITEM(item)) )

         {
             m_selections.Add(item);
         }
         {
             m_selections.Add(item);
         }


@@ -374,7 +603,7 @@ public:
 private:
     wxArrayTreeItemIds& m_selections;
 
 private:
     wxArrayTreeItemIds& m_selections;
 

-    DECLARE_NO_COPY_CLASS(TraverseSelections)
+    wxDECLARE_NO_COPY_CLASS(TraverseSelections);

 };
 
 // internal class for counting tree items
 };
 
 // internal class for counting tree items


@@ -403,140 +632,13 @@ public:
 private:
     size_t m_count;
 
 private:
     size_t m_count;
 

-    DECLARE_NO_COPY_CLASS(TraverseCounter)
-};
-
-// ----------------------------------------------------------------------------
-// This class is needed for support of different images: the Win32 common
-// control natively supports only 2 images (the normal one and another for the
-// selected state). We wish to provide support for 2 more of them for folder
-// items (i.e. those which have children): for expanded state and for expanded
-// selected state. For this we use this structure to store the additional items
-// images.
-//
-// There is only one problem with this: when we retrieve the item's data, we
-// don't know whether we get a pointer to wxTreeItemData or
-// wxTreeItemIndirectData. So we always set the item id to an invalid value
-// in this class and the code using the client data checks for it and retrieves
-// the real client data in this case.
-// ----------------------------------------------------------------------------
-
-class wxTreeItemIndirectData : public wxTreeItemData
-{
-public:
-    // ctor associates this data with the item and the real item data becomes
-    // available through our GetData() method
-    wxTreeItemIndirectData(wxTreeCtrl *tree, const wxTreeItemId& item)
-    {
-        for ( size_t n = 0; n < WXSIZEOF(m_images); n++ )
-        {
-            m_images[n] = -1;
-        }
-
-        // save the old data
-        m_data = tree->GetItemData(item);
-
-        // and set ourselves as the new one
-        tree->SetIndirectItemData(item, this);
-
-        // we must have the invalid value for the item
-        m_pItem = 0l;
-    }
-
-    // dtor deletes the associated data as well
-    virtual ~wxTreeItemIndirectData() { delete m_data; }
-
-    // accessors
-        // get the real data associated with the item
-    wxTreeItemData *GetData() const { return m_data; }
-        // change it
-    void SetData(wxTreeItemData *data) { m_data = data; }
-
-        // do we have such image?
-    bool HasImage(wxTreeItemIcon which) const { return m_images[which] != -1; }
-        // get image
-    int GetImage(wxTreeItemIcon which) const { return m_images[which]; }
-        // change it
-    void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
-
-private:
-    // all the images associated with the item
-    int m_images[wxTreeItemIcon_Max];
-
-    // the real client data
-    wxTreeItemData *m_data;
-
-    DECLARE_NO_COPY_CLASS(wxTreeItemIndirectData)
+    wxDECLARE_NO_COPY_CLASS(TraverseCounter);

 };
 
 // ----------------------------------------------------------------------------
 // wxWin macros
 // ----------------------------------------------------------------------------
 
 };
 
 // ----------------------------------------------------------------------------
 // wxWin macros
 // ----------------------------------------------------------------------------
 

-#if wxUSE_EXTENDED_RTTI
-WX_DEFINE_FLAGS( wxTreeCtrlStyle )
-
-wxBEGIN_FLAGS( wxTreeCtrlStyle )
-    // new style border flags, we put them first to
-    // use them for streaming out
-    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
-    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
-    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
-    wxFLAGS_MEMBER(wxBORDER_RAISED)
-    wxFLAGS_MEMBER(wxBORDER_STATIC)
-    wxFLAGS_MEMBER(wxBORDER_NONE)
-
-    // old style border flags
-    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
-    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
-    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
-    wxFLAGS_MEMBER(wxRAISED_BORDER)
-    wxFLAGS_MEMBER(wxSTATIC_BORDER)
-    wxFLAGS_MEMBER(wxBORDER)
-
-    // standard window styles
-    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
-    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
-    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
-    wxFLAGS_MEMBER(wxWANTS_CHARS)
-    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
-    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
-    wxFLAGS_MEMBER(wxVSCROLL)
-    wxFLAGS_MEMBER(wxHSCROLL)
-
-    wxFLAGS_MEMBER(wxTR_EDIT_LABELS)
-    wxFLAGS_MEMBER(wxTR_NO_BUTTONS)
-    wxFLAGS_MEMBER(wxTR_HAS_BUTTONS)
-    wxFLAGS_MEMBER(wxTR_TWIST_BUTTONS)
-    wxFLAGS_MEMBER(wxTR_NO_LINES)
-    wxFLAGS_MEMBER(wxTR_FULL_ROW_HIGHLIGHT)
-    wxFLAGS_MEMBER(wxTR_LINES_AT_ROOT)
-    wxFLAGS_MEMBER(wxTR_HIDE_ROOT)
-    wxFLAGS_MEMBER(wxTR_ROW_LINES)
-    wxFLAGS_MEMBER(wxTR_HAS_VARIABLE_ROW_HEIGHT)
-    wxFLAGS_MEMBER(wxTR_SINGLE)
-    wxFLAGS_MEMBER(wxTR_MULTIPLE)
-    wxFLAGS_MEMBER(wxTR_EXTENDED)
-    wxFLAGS_MEMBER(wxTR_DEFAULT_STYLE)
-
-wxEND_FLAGS( wxTreeCtrlStyle )
-
-IMPLEMENT_DYNAMIC_CLASS_XTI(wxTreeCtrl, wxControl,"wx/treectrl.h")
-
-wxBEGIN_PROPERTIES_TABLE(wxTreeCtrl)
-    wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
-    wxEVENT_RANGE_PROPERTY( TreeEvent , wxEVT_COMMAND_TREE_BEGIN_DRAG , wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK , wxTreeEvent )
-    wxPROPERTY_FLAGS( WindowStyle , wxTreeCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
-wxEND_PROPERTIES_TABLE()
-
-wxBEGIN_HANDLERS_TABLE(wxTreeCtrl)
-wxEND_HANDLERS_TABLE()
-
-wxCONSTRUCTOR_5( wxTreeCtrl , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
-#else
-IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl)
-#endif
-

 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------


@@ -610,13 +712,17 @@ bool wxTreeTraversal::Traverse(const wxTreeItemId& root, bool recursively)
 
 void wxTreeCtrl::Init()
 {
 
 void wxTreeCtrl::Init()
 {

-    m_imageListNormal = NULL;
-    m_imageListState = NULL;
-    m_ownsImageListNormal = m_ownsImageListState = false;

     m_textCtrl = NULL;
     m_hasAnyAttr = false;
     m_textCtrl = NULL;
     m_hasAnyAttr = false;

+#if wxUSE_DRAGIMAGE

     m_dragImage = NULL;
     m_dragImage = NULL;

+#endif

     m_pVirtualRoot = NULL;
     m_pVirtualRoot = NULL;

+    m_dragStarted = false;
+    m_focusLost = true;
+    m_changingSelection = false;
+    m_triggerStateImageClick = false;
+    m_mouseUpDeselect = false;

 
     // initialize the global array of events now as it can't be done statically
     // with the wxEVT_XXX values being allocated during run-time only
 
     // initialize the global array of events now as it can't be done statically
     // with the wxEVT_XXX values being allocated during run-time only


@@ -642,11 +748,11 @@ bool wxTreeCtrl::Create(wxWindow *parent,
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
         return false;
 
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
         return false;
 

-    DWORD exStyle = 0;
+    WXDWORD exStyle = 0;

     DWORD wstyle = MSWGetStyle(m_windowStyle, & exStyle);
     wstyle |= WS_TABSTOP | TVS_SHOWSELALWAYS;
 
     DWORD wstyle = MSWGetStyle(m_windowStyle, & exStyle);
     wstyle |= WS_TABSTOP | TVS_SHOWSELALWAYS;
 

-    if ((m_windowStyle & wxTR_NO_LINES) == 0)
+    if ( !(m_windowStyle & wxTR_NO_LINES) )

         wstyle |= TVS_HASLINES;
     if ( m_windowStyle & wxTR_HAS_BUTTONS )
         wstyle |= TVS_HASBUTTONS;
         wstyle |= TVS_HASLINES;
     if ( m_windowStyle & wxTR_HAS_BUTTONS )
         wstyle |= TVS_HASBUTTONS;


@@ -659,25 +765,11 @@ bool wxTreeCtrl::Create(wxWindow *parent,
 
     if ( m_windowStyle & wxTR_FULL_ROW_HIGHLIGHT )
     {
 
     if ( m_windowStyle & wxTR_FULL_ROW_HIGHLIGHT )
     {

-        if ( wxTheApp->GetComCtl32Version() >= 471 )
+        if ( wxApp::GetComCtl32Version() >= 471 )

             wstyle |= TVS_FULLROWSELECT;
     }
 
             wstyle |= TVS_FULLROWSELECT;
     }
 

-    // using TVS_CHECKBOXES for emulation of a multiselection tree control
-    // doesn't work without the new enough headers
-#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE && \
-    !defined( __GNUWIN32_OLD__ ) && \
-    !defined( __BORLANDC__ ) && \
-    !defined( __WATCOMC__ ) && \
-    (!defined(__VISUALC__) || (__VISUALC__ > 1010))
-
-    // we emulate the multiple selection tree controls by using checkboxes: set
-    // up the image list we need for this if we do have multiple selections
-    if ( m_windowStyle & wxTR_MULTIPLE )
-        wstyle |= TVS_CHECKBOXES;
-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-
-#ifndef __WXWINCE__
+#if !defined(__WXWINCE__) && defined(TVS_INFOTIP)

     // Need so that TVN_GETINFOTIP messages will be sent
     wstyle |= TVS_INFOTIP;
 #endif
     // Need so that TVN_GETINFOTIP messages will be sent
     wstyle |= TVS_INFOTIP;
 #endif


@@ -686,82 +778,32 @@ bool wxTreeCtrl::Create(wxWindow *parent,
     if ( !MSWCreateControl(WC_TREEVIEW, wstyle, pos, size) )
         return false;
 
     if ( !MSWCreateControl(WC_TREEVIEW, wstyle, pos, size) )
         return false;
 

-#if wxUSE_COMCTL32_SAFELY
-    wxWindow::SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
-    wxWindow::SetForegroundColour(wxWindow::GetParent()->GetForegroundColour());
-#elif 1

     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
     SetForegroundColour(wxWindow::GetParent()->GetForegroundColour());
     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
     SetForegroundColour(wxWindow::GetParent()->GetForegroundColour());

-#else
-    // This works around a bug in the Windows tree control whereby for some versions
-    // of comctrl32, setting any colour actually draws the background in black.
-    // This will initialise the background to the system colour.
-    // THIS FIX NOW REVERTED since it caused problems on _other_ systems.
-    // Assume the user has an updated comctl32.dll.
-    ::SendMessage(GetHwnd(), TVM_SETBKCOLOR, 0,-1);
-    wxWindow::SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
-    SetForegroundColour(wxWindow::GetParent()->GetForegroundColour());
-#endif
-
-
-    // VZ: this is some experimental code which may be used to get the
-    //     TVS_CHECKBOXES style functionality for comctl32.dll < 4.71.
-    //     AFAIK, the standard DLL does about the same thing anyhow.
-#if 0
-    if ( m_windowStyle & wxTR_MULTIPLE )
-    {
-        wxBitmap bmp;
-
-        // create the DC compatible with the current screen
-        HDC hdcMem = CreateCompatibleDC(NULL);
-
-        // create a mono bitmap of the standard size
-        int x = ::GetSystemMetrics(SM_CXMENUCHECK);
-        int y = ::GetSystemMetrics(SM_CYMENUCHECK);
-        wxImageList imagelistCheckboxes(x, y, false, 2);
-        HBITMAP hbmpCheck = CreateBitmap(x, y,   // bitmap size
-                                         1,      // # of color planes
-                                         1,      // # bits needed for one pixel
-                                         0);     // array containing colour data
-        SelectObject(hdcMem, hbmpCheck);
-
-        // then draw a check mark into it
-        RECT rect = { 0, 0, x, y };
-        if ( !::DrawFrameControl(hdcMem, &rect,
-                                 DFC_BUTTON,
-                                 DFCS_BUTTONCHECK | DFCS_CHECKED) )
-        {
-            wxLogLastError(wxT("DrawFrameControl(check)"));
-        }

 
 

-        bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
-        imagelistCheckboxes.Add(bmp);
+    wxSetCCUnicodeFormat(GetHwnd());

 
 

-        if ( !::DrawFrameControl(hdcMem, &rect,
-                                 DFC_BUTTON,
-                                 DFCS_BUTTONCHECK) )
+    if ( m_windowStyle & wxTR_TWIST_BUTTONS )
+    {
+        // Under Vista and later Explorer uses rotating ("twist") buttons
+        // instead of the default "+/-" ones so apply its theme to the tree
+        // control to implement this style.
+        if ( wxGetWinVersion() >= wxWinVersion_Vista )

         {
         {

-            wxLogLastError(wxT("DrawFrameControl(uncheck)"));
+            if ( wxUxThemeEngine *theme = wxUxThemeEngine::GetIfActive() )
+            {
+                theme->SetWindowTheme(GetHwnd(), L"EXPLORER", NULL);
+            }

         }
         }

-
-        bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
-        imagelistCheckboxes.Add(bmp);
-
-        // clean up
-        ::DeleteDC(hdcMem);
-
-        // set the imagelist
-        SetStateImageList(&imagelistCheckboxes);

     }
     }

-#endif // 0
-
-    wxSetCCUnicodeFormat(GetHwnd());

 
     return true;
 }
 
 wxTreeCtrl::~wxTreeCtrl()
 {
 
     return true;
 }
 
 wxTreeCtrl::~wxTreeCtrl()
 {

+    m_isBeingDeleted = true;
+

     // delete any attributes
     if ( m_hasAnyAttr )
     {
     // delete any attributes
     if ( m_hasAnyAttr )
     {


@@ -776,9 +818,6 @@ wxTreeCtrl::~wxTreeCtrl()
     // delete user data to prevent memory leaks
     // also deletes hidden root node storage.
     DeleteAllItems();
     // delete user data to prevent memory leaks
     // also deletes hidden root node storage.
     DeleteAllItems();

-
-    if (m_ownsImageListNormal) delete m_imageListNormal;
-    if (m_ownsImageListState) delete m_imageListState;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -799,10 +838,10 @@ wxTreeCtrl::GetClassDefaultAttributes(wxWindowVariant variant)
 
 // simple wrappers which add error checking in debug mode
 
 
 // simple wrappers which add error checking in debug mode
 

-bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
+bool wxTreeCtrl::DoGetItem(wxTreeViewItem *tvItem) const

 {
     wxCHECK_MSG( tvItem->hItem != TVI_ROOT, false,
 {
     wxCHECK_MSG( tvItem->hItem != TVI_ROOT, false,

-                 _T("can't retrieve virtual root item") );
+                 wxT("can't retrieve virtual root item") );

 
     if ( !TreeView_GetItem(GetHwnd(), tvItem) )
     {
 
     if ( !TreeView_GetItem(GetHwnd(), tvItem) )
     {


@@ -814,17 +853,19 @@ bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
     return true;
 }
 
     return true;
 }
 

-void wxTreeCtrl::DoSetItem(wxTreeViewItem* tvItem)
+void wxTreeCtrl::DoSetItem(wxTreeViewItem *tvItem)

 {
 {

+    TreeItemUnlocker unlocker(tvItem->hItem);
+

     if ( TreeView_SetItem(GetHwnd(), tvItem) == -1 )
     {
         wxLogLastError(wxT("TreeView_SetItem"));
     }
 }
 
     if ( TreeView_SetItem(GetHwnd(), tvItem) == -1 )
     {
         wxLogLastError(wxT("TreeView_SetItem"));
     }
 }
 

-size_t wxTreeCtrl::GetCount() const
+unsigned int wxTreeCtrl::GetCount() const

 {
 {

-    return (size_t)TreeView_GetCount(GetHwnd());
+    return (unsigned int)TreeView_GetCount(GetHwnd());

 }
 
 unsigned int wxTreeCtrl::GetIndent() const
 }
 
 unsigned int wxTreeCtrl::GetIndent() const


@@ -837,22 +878,12 @@ void wxTreeCtrl::SetIndent(unsigned int indent)
     TreeView_SetIndent(GetHwnd(), indent);
 }
 
     TreeView_SetIndent(GetHwnd(), indent);
 }
 

-wxImageList *wxTreeCtrl::GetImageList() const
-{
-    return m_imageListNormal;
-}
-
-wxImageList *wxTreeCtrl::GetStateImageList() const
-{
-    return m_imageListState;
-}
-

 void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which)
 {
     // no error return
 void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which)
 {
     // no error return

-    TreeView_SetImageList(GetHwnd(),
-                          imageList ? imageList->GetHIMAGELIST() : 0,
-                          which);
+    (void) TreeView_SetImageList(GetHwnd(),
+                                 imageList ? imageList->GetHIMAGELIST() : 0,
+                                 which);

 }
 
 void wxTreeCtrl::SetImageList(wxImageList *imageList)
 }
 
 void wxTreeCtrl::SetImageList(wxImageList *imageList)


@@ -871,18 +902,6 @@ void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
     m_ownsImageListState = false;
 }
 
     m_ownsImageListState = false;
 }
 

-void wxTreeCtrl::AssignImageList(wxImageList *imageList)
-{
-    SetImageList(imageList);
-    m_ownsImageListNormal = true;
-}
-
-void wxTreeCtrl::AssignStateImageList(wxImageList *imageList)
-{
-    SetStateImageList(imageList);
-    m_ownsImageListState = true;
-}
-

 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
                                     bool recursively) const
 {
 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
                                     bool recursively) const
 {


@@ -898,24 +917,20 @@ size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
 
 bool wxTreeCtrl::SetBackgroundColour(const wxColour &colour)
 {
 
 bool wxTreeCtrl::SetBackgroundColour(const wxColour &colour)
 {

-#if !wxUSE_COMCTL32_SAFELY

     if ( !wxWindowBase::SetBackgroundColour(colour) )
         return false;
 
     ::SendMessage(GetHwnd(), TVM_SETBKCOLOR, 0, colour.GetPixel());
     if ( !wxWindowBase::SetBackgroundColour(colour) )
         return false;
 
     ::SendMessage(GetHwnd(), TVM_SETBKCOLOR, 0, colour.GetPixel());

-#endif

 
     return true;
 }
 
 bool wxTreeCtrl::SetForegroundColour(const wxColour &colour)
 {
 
     return true;
 }
 
 bool wxTreeCtrl::SetForegroundColour(const wxColour &colour)
 {

-#if !wxUSE_COMCTL32_SAFELY

     if ( !wxWindowBase::SetForegroundColour(colour) )
         return false;
 
     ::SendMessage(GetHwnd(), TVM_SETTEXTCOLOR, 0, colour.GetPixel());
     if ( !wxWindowBase::SetForegroundColour(colour) )
         return false;
 
     ::SendMessage(GetHwnd(), TVM_SETTEXTCOLOR, 0, colour.GetPixel());

-#endif

 
     return true;
 }
 
     return true;
 }


@@ -924,6 +939,11 @@ bool wxTreeCtrl::SetForegroundColour(const wxColour &colour)
 // Item access
 // ----------------------------------------------------------------------------
 
 // Item access
 // ----------------------------------------------------------------------------
 

+bool wxTreeCtrl::IsHiddenRoot(const wxTreeItemId& item) const
+{
+    return HITEM(item) == TVI_ROOT && HasFlag(wxTR_HIDE_ROOT);
+}
+

 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), wxEmptyString, wxT("invalid tree item") );
 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), wxEmptyString, wxT("invalid tree item") );


@@ -950,7 +970,7 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
         return;
 
     wxTreeViewItem tvItem(item, TVIF_TEXT);
         return;
 
     wxTreeViewItem tvItem(item, TVIF_TEXT);

-    tvItem.pszText = (wxChar *)text.c_str();  // conversion is ok
+    tvItem.pszText = wxMSW_CONV_LPTSTR(text);

     DoSetItem(&tvItem);
 
     // when setting the text of the item being edited, the text control should
     DoSetItem(&tvItem);
 
     // when setting the text of the item being edited, the text control should


@@ -963,263 +983,102 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
     {
         if ( item == m_idEdited )
         {
     {
         if ( item == m_idEdited )
         {

-            ::SetWindowText(hwndEdit, text);
+            ::SetWindowText(hwndEdit, text.t_str());

         }
     }
 }
 
         }
     }
 }
 

-int wxTreeCtrl::DoGetItemImageFromData(const wxTreeItemId& item,
-                                       wxTreeItemIcon which) const
+int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
+                             wxTreeItemIcon which) const

 {
 {

-    wxTreeViewItem tvItem(item, TVIF_PARAM);
-    if ( !DoGetItem(&tvItem) )
+    wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
+
+    if ( IsHiddenRoot(item) )

     {
     {

+        // no images for hidden root item

         return -1;
     }
 
         return -1;
     }
 

-    return ((wxTreeItemIndirectData *)tvItem.lParam)->GetImage(which);
+    wxTreeItemParam *param = GetItemParam(item);
+
+    return param && param->HasImage(which) ? param->GetImage(which) : -1;

 }
 
 }
 

-void wxTreeCtrl::DoSetItemImageFromData(const wxTreeItemId& item,
-                                        int image,
-                                        wxTreeItemIcon which) const
-{
-    wxTreeViewItem tvItem(item, TVIF_PARAM);
-    if ( !DoGetItem(&tvItem) )
-    {
-        return;
-    }
-
-    wxTreeItemIndirectData *data = ((wxTreeItemIndirectData *)tvItem.lParam);
-
-    data->SetImage(image, which);
-
-    // make sure that we have selected images as well
-    if ( which == wxTreeItemIcon_Normal &&
-         !data->HasImage(wxTreeItemIcon_Selected) )
-    {
-        data->SetImage(image, wxTreeItemIcon_Selected);
-    }
-
-    if ( which == wxTreeItemIcon_Expanded &&
-         !data->HasImage(wxTreeItemIcon_SelectedExpanded) )
-    {
-        data->SetImage(image, wxTreeItemIcon_SelectedExpanded);
-    }
-}
-
-void wxTreeCtrl::DoSetItemImages(const wxTreeItemId& item,
-                                 int image,
-                                 int imageSel)
-{
-    wxTreeViewItem tvItem(item, TVIF_IMAGE | TVIF_SELECTEDIMAGE);
-    tvItem.iSelectedImage = imageSel;
-    tvItem.iImage = image;
-    DoSetItem(&tvItem);
-}
-
-int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
-                             wxTreeItemIcon which) const
-{
-    wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
-
-    if ( (HITEM(item) == TVI_ROOT) && (m_windowStyle & wxTR_HIDE_ROOT) )
-    {
-        // TODO: Maybe a hidden root can still provide images?
-        return -1;
-    }
-
-    if ( HasIndirectData(item) )
-    {
-        return DoGetItemImageFromData(item, which);
-    }
-
-    UINT mask;
-    switch ( which )
-    {
-        default:
-            wxFAIL_MSG( wxT("unknown tree item image type") );
-
-        case wxTreeItemIcon_Normal:
-            mask = TVIF_IMAGE;
-            break;
-
-        case wxTreeItemIcon_Selected:
-            mask = TVIF_SELECTEDIMAGE;
-            break;
-
-        case wxTreeItemIcon_Expanded:
-        case wxTreeItemIcon_SelectedExpanded:
-            return -1;
-    }
-
-    wxTreeViewItem tvItem(item, mask);
-    DoGetItem(&tvItem);
-
-    return mask == TVIF_IMAGE ? tvItem.iImage : tvItem.iSelectedImage;
-}
-
-void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
-                              wxTreeItemIcon which)
+void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
+                              wxTreeItemIcon which)

 {
     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 {
     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );

+    wxCHECK_RET( which >= 0 &&
+                 which < wxTreeItemIcon_Max,
+                 wxT("invalid image index"));

 
 

-    if ( IS_VIRTUAL_ROOT(item) )
+
+    if ( IsHiddenRoot(item) )

     {
     {

-        // TODO: Maybe a hidden root can still store images?
+        // no images for hidden root item

         return;
     }
 
         return;
     }
 

-    int imageNormal,
-        imageSel;
-
-    switch ( which )
-    {
-        default:
-            wxFAIL_MSG( wxT("unknown tree item image type") );
-            // fall through
-
-        case wxTreeItemIcon_Normal:
-            {
-                const int imageNormalOld = GetItemImage(item);
-                const int imageSelOld =
-                    GetItemImage(item, wxTreeItemIcon_Selected);
-
-                // always set the normal image
-                imageNormal = image;
-
-                // if the selected and normal images were the same, they should
-                // be the same after the update, otherwise leave the selected
-                // image as it was
-                imageSel = imageNormalOld == imageSelOld ? image : imageSelOld;
-            }
-            break;
-
-        case wxTreeItemIcon_Selected:
-            imageNormal = GetItemImage(item);
-            imageSel = image;
-            break;
-
-        case wxTreeItemIcon_Expanded:
-        case wxTreeItemIcon_SelectedExpanded:
-            if ( !HasIndirectData(item) )
-            {
-                // we need to get the old images first, because after we create
-                // the wxTreeItemIndirectData GetItemXXXImage() will use it to
-                // get the images
-                imageNormal = GetItemImage(item);
-                imageSel = GetItemImage(item, wxTreeItemIcon_Selected);
-
-                // if it doesn't have it yet, add it
-                wxTreeItemIndirectData *data = new
-                    wxTreeItemIndirectData(this, item);
-
-                // copy the data to the new location
-                data->SetImage(imageNormal, wxTreeItemIcon_Normal);
-                data->SetImage(imageSel, wxTreeItemIcon_Selected);
-            }
-
-            DoSetItemImageFromData(item, image, which);
+    wxTreeItemParam *data = GetItemParam(item);
+    if ( !data )
+        return;

 
 

-            // reset the normal/selected images because we won't use them any
-            // more - now they're stored inside the indirect data
-            imageNormal =
-            imageSel = I_IMAGECALLBACK;
-            break;
-    }
+    data->SetImage(image, which);

 
 

-    // NB: at least in version 5.00.0518.9 of comctl32.dll we need to always
-    //     change both normal and selected image - otherwise the change simply
-    //     doesn't take place!
-    DoSetItemImages(item, imageNormal, imageSel);
+    RefreshItem(item);

 }
 
 }
 

-wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
+wxTreeItemParam *wxTreeCtrl::GetItemParam(const wxTreeItemId& item) const

 {
     wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
 
     wxTreeViewItem tvItem(item, TVIF_PARAM);
 
 {
     wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
 
     wxTreeViewItem tvItem(item, TVIF_PARAM);
 

-    // Hidden root may have data.
+    // hidden root may still have data.

     if ( IS_VIRTUAL_ROOT(item) )
     {
     if ( IS_VIRTUAL_ROOT(item) )
     {

-        return GET_VIRTUAL_ROOT()->GetData();
+        return GET_VIRTUAL_ROOT()->GetParam();

     }
 
     }
 

-    // Visible node.
+    // visible node.

     if ( !DoGetItem(&tvItem) )
     {
         return NULL;
     }
 
     if ( !DoGetItem(&tvItem) )
     {
         return NULL;
     }
 

-    wxTreeItemData *data = (wxTreeItemData *)tvItem.lParam;
-    if ( IsDataIndirect(data) )
-    {
-        data = ((wxTreeItemIndirectData *)data)->GetData();
-    }
-
-    return data;
+    return (wxTreeItemParam *)tvItem.lParam;

 }
 
 }
 

-void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
+bool wxTreeCtrl::HandleTreeEvent(wxTreeEvent& event) const

 {
 {

-    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
-
-    if ( IS_VIRTUAL_ROOT(item) )
-    {
-        GET_VIRTUAL_ROOT()->SetData(data);
-    }
-
-    // first, associate this piece of data with this item
-    if ( data )
+    if ( event.m_item.IsOk() )

     {
     {

-        data->SetId(item);
+        event.SetClientObject(GetItemData(event.m_item));

     }
 
     }
 

-    wxTreeViewItem tvItem(item, TVIF_PARAM);
-
-    if ( HasIndirectData(item) )
-    {
-        if ( DoGetItem(&tvItem) )
-        {
-            ((wxTreeItemIndirectData *)tvItem.lParam)->SetData(data);
-        }
-        else
-        {
-            wxFAIL_MSG( wxT("failed to change tree items data") );
-        }
-    }
-    else
-    {
-        tvItem.lParam = (LPARAM)data;
-        DoSetItem(&tvItem);
-    }
+    return HandleWindowEvent(event);

 }
 
 }
 

-void wxTreeCtrl::SetIndirectItemData(const wxTreeItemId& item,
-                                     wxTreeItemIndirectData *data)
+wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const

 {
 {

-    // this should never happen because it's unnecessary and will probably lead
-    // to crash too because the code elsewhere supposes that the pointer the
-    // wxTreeItemIndirectData has is a real wxItemData and not
-    // wxTreeItemIndirectData as well
-    wxASSERT_MSG( !HasIndirectData(item), wxT("setting indirect data twice?") );
+    wxTreeItemParam *data = GetItemParam(item);

 
 

-    SetItemData(item, data);
+    return data ? data->GetData() : NULL;

 }
 
 }
 

-bool wxTreeCtrl::HasIndirectData(const wxTreeItemId& item) const
+void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)

 {
 {

-    // query the item itself
-    wxTreeViewItem tvItem(item, TVIF_PARAM);
-    if ( !DoGetItem(&tvItem) )
+    // first, associate this piece of data with this item
+    if ( data )

     {
     {

-        return false;
+        data->SetId(item);

     }
 
     }
 

-    wxTreeItemData *data = (wxTreeItemData *)tvItem.lParam;
+    wxTreeItemParam *param = GetItemParam(item);

 
 

-    return data && IsDataIndirect(data);
+    wxCHECK_RET( param, wxT("failed to change tree items data") );
+
+    param->SetData(data);

 }
 
 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 }
 
 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)


@@ -1360,6 +1219,10 @@ void wxTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 
     attr->SetFont(font);
 
 
     attr->SetFont(font);
 

+    // Reset the item's text to ensure that the bounding rect will be adjusted
+    // for the new font.
+    SetItemText(item, GetItemText(item));
+

     RefreshItem(item);
 }
 
     RefreshItem(item);
 }
 


@@ -1378,14 +1241,10 @@ bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
     }
 
     // Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect
     }
 
     // Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect

-    RECT rect;
-
-    // this ugliness comes directly from MSDN - it *is* the correct way to pass
-    // the HTREEITEM with TVM_GETITEMRECT
-    *(HTREEITEM *)&rect = HITEM(item);
+    TVGetItemRectParam param;

 
     // true means to get rect for just the text, not the whole line
 
     // true means to get rect for just the text, not the whole line

-    if ( !::SendMessage(GetHwnd(), TVM_GETITEMRECT, true, (LPARAM)&rect) )
+    if ( !wxTreeView_GetItemRect(GetHwnd(), HITEM(item), param, TRUE) )

     {
         // if TVM_GETITEMRECT returned false, then the item is definitely not
         // visible (because its parent is not expanded)
     {
         // if TVM_GETITEMRECT returned false, then the item is definitely not
         // visible (because its parent is not expanded)


@@ -1395,13 +1254,19 @@ bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
     // however if it returned true, the item might still be outside the
     // currently visible part of the tree, test for it (notice that partly
     // visible means visible here)
     // however if it returned true, the item might still be outside the
     // currently visible part of the tree, test for it (notice that partly
     // visible means visible here)

-    return rect.bottom > 0 && rect.top < GetClientSize().y;
+    return param.rect.bottom > 0 && param.rect.top < GetClientSize().y;

 }
 
 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
 
 }
 
 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
 

+    if ( IS_VIRTUAL_ROOT(item) )
+    {
+        wxTreeItemIdValue cookie;
+        return GetFirstChild(item, cookie).IsOk();
+    }
+

     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
     DoGetItem(&tvItem);
 
     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
     DoGetItem(&tvItem);
 


@@ -1453,9 +1318,14 @@ wxTreeItemId wxTreeCtrl::GetRootItem() const
 
 wxTreeItemId wxTreeCtrl::GetSelection() const
 {
 
 wxTreeItemId wxTreeCtrl::GetSelection() const
 {

-    wxCHECK_MSG( !(m_windowStyle & wxTR_MULTIPLE), wxTreeItemId(),
+    wxCHECK_MSG( !HasFlag(wxTR_MULTIPLE), wxTreeItemId(),

                  wxT("this only works with single selection controls") );
 
                  wxT("this only works with single selection controls") );
 

+    return GetFocusedItem();
+}
+
+wxTreeItemId wxTreeCtrl::GetFocusedItem() const
+{

     return wxTreeItemId(TreeView_GetSelection(GetHwnd()));
 }
 
     return wxTreeItemId(TreeView_GetSelection(GetHwnd()));
 }
 


@@ -1510,36 +1380,6 @@ wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
     return item;
 }
 
     return item;
 }
 

-#if WXWIN_COMPATIBILITY_2_4
-
-wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
-                                       long& cookie) const
-{
-    wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
-
-    cookie = (long)TreeView_GetChild(GetHwnd(), HITEM(item));
-
-    return wxTreeItemId((void *)cookie);
-}
-
-wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
-                                      long& cookie) const
-{
-    wxTreeItemId fromCookie((void *)cookie);
-
-    HTREEITEM hitem = HITEM(fromCookie);
-
-    hitem = TreeView_GetNextSibling(GetHwnd(), hitem);
-
-    wxTreeItemId item(hitem);
-
-    cookie = (long)item.m_pItem;
-
-    return item;
-}
-
-#endif // WXWIN_COMPATIBILITY_2_4
-

 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );


@@ -1580,7 +1420,15 @@ wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
     wxASSERT_MSG( IsVisible(item), wxT("The item you call GetNextVisible() for must be visible itself!"));
 
     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
     wxASSERT_MSG( IsVisible(item), wxT("The item you call GetNextVisible() for must be visible itself!"));
 

-    return wxTreeItemId(TreeView_GetNextVisible(GetHwnd(), HITEM(item)));
+    wxTreeItemId next(TreeView_GetNextVisible(GetHwnd(), HITEM(item)));
+    if ( next.IsOk() && !IsVisible(next) )
+    {
+        // Win32 considers that any non-collapsed item is visible while we want
+        // to return only really visible items
+        next.Unset();
+    }
+
+    return next;

 }
 
 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 }
 
 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const


@@ -1588,40 +1436,21 @@ wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
     wxASSERT_MSG( IsVisible(item), wxT("The item you call GetPrevVisible() for must be visible itself!"));
 
     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
     wxASSERT_MSG( IsVisible(item), wxT("The item you call GetPrevVisible() for must be visible itself!"));
 

-    return wxTreeItemId(TreeView_GetPrevVisible(GetHwnd(), HITEM(item)));
+    wxTreeItemId prev(TreeView_GetPrevVisible(GetHwnd(), HITEM(item)));
+    if ( prev.IsOk() && !IsVisible(prev) )
+    {
+        // just as above, Win32 function will happily return the previous item
+        // in the tree for the first visible item too
+        prev.Unset();
+    }
+
+    return prev;

 }
 
 // ----------------------------------------------------------------------------
 // multiple selections emulation
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // multiple selections emulation
 // ----------------------------------------------------------------------------
 

-bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const
-{
-    wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
-
-    // receive the desired information.
-    wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
-    DoGetItem(&tvItem);
-
-    // state image indices are 1 based
-    return ((tvItem.state >> 12) - 1) == 1;
-}
-
-void wxTreeCtrl::SetItemCheck(const wxTreeItemId& item, bool check)
-{
-    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
-
-    // receive the desired information.
-    wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
-
-    DoGetItem(&tvItem);
-
-    // state images are one-based
-    tvItem.state = (check ? 2 : 1) << 12;
-
-    DoSetItem(&tvItem);
-}
-

 size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const
 {
     TraverseSelections selector(this, selections);
 size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const
 {
     TraverseSelections selector(this, selections);


@@ -1633,15 +1462,15 @@ size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const
 // Usual operations
 // ----------------------------------------------------------------------------
 
 // Usual operations
 // ----------------------------------------------------------------------------
 

-wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
-                                      wxTreeItemId hInsertAfter,
-                                      const wxString& text,
-                                      int image, int selectedImage,
-                                      wxTreeItemData *data)
+wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent,
+                                       const wxTreeItemId& hInsertAfter,
+                                       const wxString& text,
+                                       int image, int selectedImage,
+                                       wxTreeItemData *data)

 {
     wxCHECK_MSG( parent.IsOk() || !TreeView_GetRoot(GetHwnd()),
                  wxTreeItemId(),
 {
     wxCHECK_MSG( parent.IsOk() || !TreeView_GetRoot(GetHwnd()),
                  wxTreeItemId(),

-                 _T("can't have more than one root in the tree") );
+                 wxT("can't have more than one root in the tree") );

 
     TV_INSERTSTRUCT tvIns;
     tvIns.hParent = HITEM(parent);
 
     TV_INSERTSTRUCT tvIns;
     tvIns.hParent = HITEM(parent);


@@ -1658,7 +1487,7 @@ wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
     if ( !text.empty() )
     {
         mask |= TVIF_TEXT;
     if ( !text.empty() )
     {
         mask |= TVIF_TEXT;

-        tvIns.item.pszText = (wxChar *)text.c_str();  // cast is ok
+        tvIns.item.pszText = wxMSW_CONV_LPTSTR(text);

     }
     else
     {
     }
     else
     {


@@ -1666,160 +1495,182 @@ wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
         tvIns.item.cchTextMax = 0;
     }
 
         tvIns.item.cchTextMax = 0;
     }
 

-    if ( image != -1 )
-    {
-        mask |= TVIF_IMAGE;
-        tvIns.item.iImage = image;
-
-        if ( selectedImage == -1 )
-        {
-            // take the same image for selected icon if not specified
-            selectedImage = image;
-        }
-    }
+    // create the param which will store the other item parameters
+    wxTreeItemParam *param = new wxTreeItemParam;

 
 

-    if ( selectedImage != -1 )
-    {
-        mask |= TVIF_SELECTEDIMAGE;
-        tvIns.item.iSelectedImage = selectedImage;
-    }
+    // we return the images on demand as they depend on whether the item is
+    // expanded or collapsed too in our case
+    mask |= TVIF_IMAGE | TVIF_SELECTEDIMAGE;
+    tvIns.item.iImage = I_IMAGECALLBACK;
+    tvIns.item.iSelectedImage = I_IMAGECALLBACK;

 
 

-    if ( data != NULL )
-    {
-        mask |= TVIF_PARAM;
-        tvIns.item.lParam = (LPARAM)data;
-    }
+    param->SetImage(image, wxTreeItemIcon_Normal);
+    param->SetImage(selectedImage, wxTreeItemIcon_Selected);

 
 

+    mask |= TVIF_PARAM;
+    tvIns.item.lParam = (LPARAM)param;

     tvIns.item.mask = mask;
 
     tvIns.item.mask = mask;
 

-    HTREEITEM id = (HTREEITEM) TreeView_InsertItem(GetHwnd(), &tvIns);
+    // don't use the hack below for the children of hidden root: this results
+    // in a crash inside comctl32.dll when we call TreeView_GetItemRect()
+    const bool firstChild = !IsHiddenRoot(parent) &&
+                                !TreeView_GetChild(GetHwnd(), HITEM(parent));
+
+    HTREEITEM id = TreeView_InsertItem(GetHwnd(), &tvIns);

     if ( id == 0 )
     {
         wxLogLastError(wxT("TreeView_InsertItem"));
     }
 
     if ( id == 0 )
     {
         wxLogLastError(wxT("TreeView_InsertItem"));
     }
 

+    // apparently some Windows versions (2000 and XP are reported to do this)
+    // sometimes don't refresh the tree after adding the first child and so we
+    // need this to make the "[+]" appear
+    if ( firstChild )
+    {
+        TVGetItemRectParam param;
+
+        wxTreeView_GetItemRect(GetHwnd(), HITEM(parent), param, FALSE);
+        ::InvalidateRect(GetHwnd(), &param.rect, FALSE);
+    }
+
+    // associate the application tree item with Win32 tree item handle
+    param->SetItem(id);
+
+    // setup wxTreeItemData

     if ( data != NULL )
     {
     if ( data != NULL )
     {

-        // associate the application tree item with Win32 tree item handle
+        param->SetData(data);

         data->SetId(id);
     }
 
     return wxTreeItemId(id);
 }
 
         data->SetId(id);
     }
 
     return wxTreeItemId(id);
 }
 

-// for compatibility only
-#if WXWIN_COMPATIBILITY_2_4
-
-wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
-                                    const wxString& text,
-                                    int image, int selImage,
-                                    long insertAfter)
-{
-    return DoInsertItem(parent, wxTreeItemId((void *)insertAfter), text,
-                        image, selImage, NULL);
-}
-
-wxImageList *wxTreeCtrl::GetImageList(int) const
-{
-    return GetImageList();
-}
-
-void wxTreeCtrl::SetImageList(wxImageList *imageList, int)
-{
-    SetImageList(imageList);
-}
-
-int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const
-{
-    return GetItemImage(item, wxTreeItemIcon_Selected);
-}
-
-void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image)
-{
-    SetItemImage(item, image, wxTreeItemIcon_Selected);
-}
-
-#endif // WXWIN_COMPATIBILITY_2_4
-

 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
                                  int image, int selectedImage,
                                  wxTreeItemData *data)
 {
 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
                                  int image, int selectedImage,
                                  wxTreeItemData *data)
 {

-
-    if ( m_windowStyle & wxTR_HIDE_ROOT )
+    if ( HasFlag(wxTR_HIDE_ROOT) )

     {
     {

+        wxASSERT_MSG( !m_pVirtualRoot, wxT("tree can have only a single root") );
+

         // create a virtual root item, the parent for all the others
         // create a virtual root item, the parent for all the others

-        m_pVirtualRoot = new wxVirtualNode(data);
+        wxTreeItemParam *param = new wxTreeItemParam;
+        param->SetData(data);
+
+        m_pVirtualRoot = new wxVirtualNode(param);

 
         return TVI_ROOT;
     }
 
 
         return TVI_ROOT;
     }
 

-    return DoInsertItem(wxTreeItemId(), wxTreeItemId(),
-                        text, image, selectedImage, data);
+    return DoInsertAfter(wxTreeItemId(), wxTreeItemId(),
+                           text, image, selectedImage, data);

 }
 
 }
 

-wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
-                                     const wxString& text,
-                                     int image, int selectedImage,
-                                     wxTreeItemData *data)
+wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
+                                      size_t index,
+                                      const wxString& text,
+                                      int image, int selectedImage,
+                                      wxTreeItemData *data)

 {
 {

-    return DoInsertItem(parent, TVI_FIRST,
-                        text, image, selectedImage, data);
-}
+    wxTreeItemId idPrev;
+    if ( index == (size_t)-1 )
+    {
+        // special value: append to the end
+        idPrev = TVI_LAST;
+    }
+    else // find the item from index
+    {
+        wxTreeItemIdValue cookie;
+        wxTreeItemId idCur = GetFirstChild(parent, cookie);
+        while ( index != 0 && idCur.IsOk() )
+        {
+            index--;

 
 

-wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
-                                    const wxTreeItemId& idPrevious,
-                                    const wxString& text,
-                                    int image, int selectedImage,
-                                    wxTreeItemData *data)
-{
-    return DoInsertItem(parent, idPrevious, text, image, selectedImage, data);
+            idPrev = idCur;
+            idCur = GetNextChild(parent, cookie);
+        }
+
+        // assert, not check: if the index is invalid, we will append the item
+        // to the end
+        wxASSERT_MSG( index == 0, wxT("bad index in wxTreeCtrl::InsertItem") );
+    }
+
+    return DoInsertAfter(parent, idPrev, text, image, selectedImage, data);

 }
 
 }
 

-wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
-                                    size_t index,
-                                    const wxString& text,
-                                    int image, int selectedImage,
-                                    wxTreeItemData *data)
+void wxTreeCtrl::Delete(const wxTreeItemId& item)

 {
 {

-    // find the item from index
-    wxTreeItemIdValue cookie;
-    wxTreeItemId idPrev, idCur = GetFirstChild(parent, cookie);
-    while ( index != 0 && idCur.IsOk() )
+    // unlock tree selections on vista, without this the
+    // tree ctrl will eventually crash after item deletion
+    TreeItemUnlocker unlock_all;
+
+    if ( HasFlag(wxTR_MULTIPLE) )

     {
     {

-        index--;
+        bool selected = IsSelected(item);
+        wxTreeItemId next;

 
 

-        idPrev = idCur;
-        idCur = GetNextChild(parent, cookie);
-    }
+        if ( selected )
+        {
+            next = TreeView_GetNextVisible(GetHwnd(), HITEM(item));
+
+            if ( !next.IsOk() )
+            {
+                next = TreeView_GetPrevVisible(GetHwnd(), HITEM(item));
+            }
+        }

 
 

-    // assert, not check: if the index is invalid, we will append the item
-    // to the end
-    wxASSERT_MSG( index == 0, _T("bad index in wxTreeCtrl::InsertItem") );
+        {
+            TempSetter set(m_changingSelection);
+            if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) )
+            {
+                wxLogLastError(wxT("TreeView_DeleteItem"));
+                return;
+            }
+        }

 
 

-    return DoInsertItem(parent, idPrev, text, image, selectedImage, data);
-}
+        if ( !selected )
+        {
+            return;
+        }

 
 

-wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parent,
-                                    const wxString& text,
-                                    int image, int selectedImage,
-                                    wxTreeItemData *data)
-{
-    return DoInsertItem(parent, TVI_LAST,
-                        text, image, selectedImage, data);
-}
+        if ( item == m_htSelStart )
+            m_htSelStart.Unset();

 
 

-void wxTreeCtrl::Delete(const wxTreeItemId& item)
-{
-    if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) )
+        if ( item == m_htClickedItem )
+            m_htClickedItem.Unset();
+
+        if ( next.IsOk() )
+        {
+            wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, next);
+
+            if ( IsTreeEventAllowed(changingEvent) )
+            {
+                wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this, next);
+                (void)HandleTreeEvent(changedEvent);
+            }
+            else
+            {
+                DoUnselectItem(next);
+                ClearFocusedItem();
+            }
+        }
+    }
+    else

     {
     {

-        wxLogLastError(wxT("TreeView_DeleteItem"));
+        if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) )
+        {
+            wxLogLastError(wxT("TreeView_DeleteItem"));
+        }

     }
 }
 
 // delete all children (but don't delete the item itself)
 void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
 {
     }
 }
 
 // delete all children (but don't delete the item itself)
 void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
 {

+    // unlock tree selections on vista for the duration of this call
+    TreeItemUnlocker unlock_all;
+

     wxTreeItemIdValue cookie;
 
     wxArrayTreeItemIds children;
     wxTreeItemIdValue cookie;
 
     wxArrayTreeItemIds children;


@@ -1834,16 +1685,20 @@ void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
     size_t nCount = children.Count();
     for ( size_t n = 0; n < nCount; n++ )
     {
     size_t nCount = children.Count();
     for ( size_t n = 0; n < nCount; n++ )
     {

-        if ( !TreeView_DeleteItem(GetHwnd(), HITEM_PTR(children[n])) )
-        {
-            wxLogLastError(wxT("TreeView_DeleteItem"));
-        }
+        Delete(children[n]);

     }
 }
 
 void wxTreeCtrl::DeleteAllItems()
 {
     }
 }
 
 void wxTreeCtrl::DeleteAllItems()
 {

-    // delete the "virtual" root item.
+    // unlock tree selections on vista for the duration of this call
+    TreeItemUnlocker unlock_all;
+
+    // invalidate all the items we store as they're going to become invalid
+    m_htSelStart =
+    m_htClickedItem = wxTreeItemId();
+
+    // delete the "virtual" root item.

     if ( GET_VIRTUAL_ROOT() )
     {
         delete GET_VIRTUAL_ROOT();
     if ( GET_VIRTUAL_ROOT() )
     {
         delete GET_VIRTUAL_ROOT();


@@ -1867,8 +1722,8 @@ void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
                   wxT("Unknown flag in wxTreeCtrl::DoExpand") );
 
     // A hidden root can be neither expanded nor collapsed.
                   wxT("Unknown flag in wxTreeCtrl::DoExpand") );
 
     // A hidden root can be neither expanded nor collapsed.

-    wxCHECK_RET( !(m_windowStyle & wxTR_HIDE_ROOT) || (HITEM(item) != TVI_ROOT),
-                 wxT("Can't expand/collapse hidden root node!") )
+    wxCHECK_RET( !IsHiddenRoot(item),
+                 wxT("Can't expand/collapse hidden root node!") );

 
     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
     // emulate them. This behaviour has changed slightly with comctl32.dll
 
     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
     // emulate them. This behaviour has changed slightly with comctl32.dll


@@ -1882,19 +1737,22 @@ void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
     tvItem.state = 0;
     DoSetItem(&tvItem);
 
     tvItem.state = 0;
     DoSetItem(&tvItem);
 

-    if ( TreeView_Expand(GetHwnd(), HITEM(item), flag) != 0 )
+    if ( IsExpanded(item) )

     {
     {

-        wxTreeEvent event(wxEVT_NULL, m_windowId);
-        event.m_item = item;
-        event.SetEventObject(this);
+        wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_COLLAPSING,
+                          this, wxTreeItemId(item));

 
 

-        // note that the {EXPAND|COLLAPS}ING event is sent by TreeView_Expand()
-        // itself
-        event.SetEventType(gs_expandEvents[IsExpanded(item) ? IDX_EXPAND
-                                                            : IDX_COLLAPSE]
-                                          [IDX_DONE]);
+        if ( !IsTreeEventAllowed(event) )
+            return;
+    }

 
 

-        (void)GetEventHandler()->ProcessEvent(event);
+    if ( TreeView_Expand(GetHwnd(), HITEM(item), flag) )
+    {
+        if ( IsExpanded(item) )
+            return;
+
+        wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_COLLAPSED, this, item);
+        (void)HandleTreeEvent(event);

     }
     //else: change didn't took place, so do nothing at all
 }
     }
     //else: change didn't took place, so do nothing at all
 }


@@ -1919,99 +1777,196 @@ void wxTreeCtrl::Toggle(const wxTreeItemId& item)
     DoExpand(item, TVE_TOGGLE);
 }
 
     DoExpand(item, TVE_TOGGLE);
 }
 

-#if WXWIN_COMPATIBILITY_2_4
-
-void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action)
+void wxTreeCtrl::Unselect()

 {
 {

-    DoExpand(item, action);
-}
+    wxASSERT_MSG( !HasFlag(wxTR_MULTIPLE),
+                  wxT("doesn't make sense, may be you want UnselectAll()?") );

 
 

-#endif
+    // the current focus
+    HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd());

 
 

-void wxTreeCtrl::Unselect()
+    if ( !htFocus )
+    {
+        return;
+    }
+
+    if ( HasFlag(wxTR_MULTIPLE) )
+    {
+        wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                  this, wxTreeItemId());
+        changingEvent.m_itemOld = htFocus;
+
+        if ( IsTreeEventAllowed(changingEvent) )
+        {
+            ClearFocusedItem();
+
+            wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                     this, wxTreeItemId());
+            changedEvent.m_itemOld = htFocus;
+            (void)HandleTreeEvent(changedEvent);
+        }
+    }
+    else
+    {
+        ClearFocusedItem();
+    }
+}
+
+void wxTreeCtrl::DoUnselectAll()

 {
 {

-    wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE),
-                  wxT("doesn't make sense, may be you want UnselectAll()?") );
+    wxArrayTreeItemIds selections;
+    size_t count = GetSelections(selections);

 
 

-    // just remove the selection
-    SelectItem(wxTreeItemId());
+    for ( size_t n = 0; n < count; n++ )
+    {
+        DoUnselectItem(selections[n]);
+    }
+
+    m_htSelStart.Unset();

 }
 
 void wxTreeCtrl::UnselectAll()
 {
 }
 
 void wxTreeCtrl::UnselectAll()
 {

-    if ( m_windowStyle & wxTR_MULTIPLE )
+    if ( HasFlag(wxTR_MULTIPLE) )

     {
     {

-        wxArrayTreeItemIds selections;
-        size_t count = GetSelections(selections);
-        for ( size_t n = 0; n < count; n++ )
+        HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd());
+        if ( !htFocus ) return;
+
+        wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this);
+        changingEvent.m_itemOld = htFocus;
+
+        if ( IsTreeEventAllowed(changingEvent) )

         {
         {

-#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-            SetItemCheck(HITEM_PTR(selections[n]), false);
-#else // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-            ::UnselectItem(GetHwnd(), HITEM_PTR(selections[n]));
-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE/!wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+            DoUnselectAll();
+
+            wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this);
+            changedEvent.m_itemOld = htFocus;
+            (void)HandleTreeEvent(changedEvent);

         }
     }
     else
     {
         }
     }
     else
     {

-        // just remove the selection

         Unselect();
     }
 }
 
         Unselect();
     }
 }
 

+void wxTreeCtrl::DoSelectChildren(const wxTreeItemId& parent)
+{
+    DoUnselectAll();
+
+    wxTreeItemIdValue cookie;
+    wxTreeItemId child = GetFirstChild(parent, cookie);
+    while ( child.IsOk() )
+    {
+        DoSelectItem(child, true);
+        child = GetNextChild(child, cookie);
+    }
+}
+
+void wxTreeCtrl::SelectChildren(const wxTreeItemId& parent)
+{
+    wxCHECK_RET( HasFlag(wxTR_MULTIPLE),
+                 "this only works with multiple selection controls" );
+
+    HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd());
+
+    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this);
+    changingEvent.m_itemOld = htFocus;
+
+    if ( IsTreeEventAllowed(changingEvent) )
+    {
+        DoSelectChildren(parent);
+
+        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this);
+        changedEvent.m_itemOld = htFocus;
+        (void)HandleTreeEvent(changedEvent);
+    }
+}
+
+void wxTreeCtrl::DoSelectItem(const wxTreeItemId& item, bool select)
+{
+    TempSetter set(m_changingSelection);
+
+    ::SelectItem(GetHwnd(), HITEM(item), select);
+}
+

 void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select)
 {
 void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select)
 {

-    if ( m_windowStyle & wxTR_MULTIPLE )
+    wxCHECK_RET( !IsHiddenRoot(item), wxT("can't select hidden root item") );
+
+    if ( select == IsSelected(item) )

     {
     {

-#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-        // selecting the item means checking it
-        SetItemCheck(item, select);
-#else // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-        ::SelectItem(GetHwnd(), HITEM(item), select);
-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE/!wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+        // nothing to do, the item is already in the requested state
+        return;

     }
     }

-    else
+
+    if ( HasFlag(wxTR_MULTIPLE) )

     {
     {

-        wxASSERT_MSG( select,
-                      _T("SelectItem(false) works only for multiselect") );
+        wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, item);
+
+        if ( IsTreeEventAllowed(changingEvent) )
+        {
+            HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd());
+            DoSelectItem(item, select);
+
+            if ( !htFocus )
+            {
+                SetFocusedItem(item);
+            }

 
 

-        // inspite of the docs (MSDN Jan 99 edition), we don't seem to receive
-        // the notification from the control (i.e. TVN_SELCHANG{ED|ING}), so
-        // send them ourselves
+            wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                     this, item);
+            (void)HandleTreeEvent(changedEvent);
+        }
+    }
+    else // single selection
+    {
+        wxTreeItemId itemOld, itemNew;
+        if ( select )
+        {
+            itemOld = GetSelection();
+            itemNew = item;
+        }
+        else // deselecting the currently selected item
+        {
+            itemOld = item;
+            // leave itemNew invalid
+        }

 
 

-        wxTreeEvent event(wxEVT_NULL, m_windowId);
-        event.m_item = item;
-        event.SetEventObject(this);
+        // Recent versions of comctl32.dll send TVN_SELCHANG{ED,ING} events
+        // when we call TreeView_SelectItem() but apparently some old ones did
+        // not so send the events ourselves and ignore those generated by
+        // TreeView_SelectItem() if m_changingSelection is set.
+        wxTreeEvent
+            changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, itemNew);
+        changingEvent.SetOldItem(itemOld);

 
 

-        event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGING);
-        if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
+        if ( IsTreeEventAllowed(changingEvent) )

         {
         {

-            if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) )
+            TempSetter set(m_changingSelection);
+
+            if ( !TreeView_SelectItem(GetHwnd(), HITEM(itemNew)) )

             {
                 wxLogLastError(wxT("TreeView_SelectItem"));
             }
             else // ok
             {
             {
                 wxLogLastError(wxT("TreeView_SelectItem"));
             }
             else // ok
             {

-                event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
-                (void)GetEventHandler()->ProcessEvent(event);
+                ::SetFocus(GetHwnd(), HITEM(item));
+
+                wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                         this, itemNew);
+                changedEvent.SetOldItem(itemOld);
+                (void)HandleTreeEvent(changedEvent);

             }
         }
         //else: program vetoed the change
     }
 }
 
             }
         }
         //else: program vetoed the change
     }
 }
 

-void wxTreeCtrl::UnselectItem(const wxTreeItemId& item)
-{
-    SelectItem(item, false);
-}
-
-void wxTreeCtrl::ToggleItemSelection(const wxTreeItemId& item)
-{
-    SelectItem(item, !IsSelected(item));
-}
-

 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
 {
 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
 {

+    wxCHECK_RET( !IsHiddenRoot(item), wxT("can't show hidden root item") );
+

     // no error return
     TreeView_EnsureVisible(GetHwnd(), HITEM(item));
 }
     // no error return
     TreeView_EnsureVisible(GetHwnd(), HITEM(item));
 }


@@ -2043,17 +1998,16 @@ void wxTreeCtrl::DeleteTextCtrl()
 
         m_textCtrl->UnsubclassWin();
         m_textCtrl->SetHWND(0);
 
         m_textCtrl->UnsubclassWin();
         m_textCtrl->SetHWND(0);

-        delete m_textCtrl;
-        m_textCtrl = NULL;
+        wxDELETE(m_textCtrl);

 
         m_idEdited.Unset();
     }
 }
 
 
         m_idEdited.Unset();
     }
 }
 

-wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
-                                  wxClassInfo* textControlClass)
+wxTextCtrl *wxTreeCtrl::EditLabel(const wxTreeItemId& item,
+                                  wxClassInfo *textControlClass)

 {
 {

-    wxASSERT( textControlClass->IsKindOf(CLASSINFO(wxTextCtrl)) );
+    wxASSERT( textControlClass->IsKindOf(wxCLASSINFO(wxTextCtrl)) );

 
     DeleteTextCtrl();
 
 
     DeleteTextCtrl();
 


@@ -2065,8 +2019,7 @@ wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
     // returned false
     if ( !hWnd )
     {
     // returned false
     if ( !hWnd )
     {

-        delete m_textCtrl;
-        m_textCtrl = NULL;
+        wxDELETE(m_textCtrl);

         return NULL;
     }
 
         return NULL;
     }
 


@@ -2082,13 +2035,13 @@ void wxTreeCtrl::DoEndEditLabel(bool discardChanges)
     DeleteTextCtrl();
 }
 
     DeleteTextCtrl();
 }
 

-wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
+wxTreeItemId wxTreeCtrl::DoTreeHitTest(const wxPoint& point, int& flags) const

 {
     TV_HITTESTINFO hitTestInfo;
     hitTestInfo.pt.x = (int)point.x;
     hitTestInfo.pt.y = (int)point.y;
 
 {
     TV_HITTESTINFO hitTestInfo;
     hitTestInfo.pt.x = (int)point.x;
     hitTestInfo.pt.y = (int)point.y;
 

-    TreeView_HitTest(GetHwnd(), &hitTestInfo);
+    (void) TreeView_HitTest(GetHwnd(), &hitTestInfo);

 
     flags = 0;
 
 
     flags = 0;
 


@@ -2117,18 +2070,18 @@ bool wxTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
                                  wxRect& rect,
                                  bool textOnly) const
 {
                                  wxRect& rect,
                                  bool textOnly) const
 {

-    RECT rc;
-

     // Virtual root items have no bounding rectangle
     if ( IS_VIRTUAL_ROOT(item) )
     {
         return false;
     }
 
     // Virtual root items have no bounding rectangle
     if ( IS_VIRTUAL_ROOT(item) )
     {
         return false;
     }
 

-    if ( TreeView_GetItemRect(GetHwnd(), HITEM(item),
-                              &rc, textOnly) )
+    TVGetItemRectParam param;
+
+    if ( wxTreeView_GetItemRect(GetHwnd(), HITEM(item), param, textOnly) )

     {
     {

-        rect = wxRect(wxPoint(rc.left, rc.top), wxPoint(rc.right, rc.bottom));
+        rect = wxRect(wxPoint(param.rect.left, param.rect.top),
+                      wxPoint(param.rect.right, param.rect.bottom));

 
         return true;
     }
 
         return true;
     }


@@ -2139,6 +2092,39 @@ bool wxTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
     }
 }
 
     }
 }
 

+void wxTreeCtrl::ClearFocusedItem()
+{
+    TempSetter set(m_changingSelection);
+
+    if ( !TreeView_SelectItem(GetHwnd(), 0) )
+    {
+        wxLogLastError(wxT("TreeView_SelectItem"));
+    }
+}
+
+void wxTreeCtrl::SetFocusedItem(const wxTreeItemId& item)
+{
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    TempSetter set(m_changingSelection);
+
+    ::SetFocus(GetHwnd(), HITEM(item));
+}
+
+void wxTreeCtrl::DoUnselectItem(const wxTreeItemId& item)
+{
+    TempSetter set(m_changingSelection);
+
+    ::UnselectItem(GetHwnd(), HITEM(item));
+}
+
+void wxTreeCtrl::DoToggleItemSelection(const wxTreeItemId& item)
+{
+    TempSetter set(m_changingSelection);
+
+    ::ToggleItemSelection(GetHwnd(), HITEM(item));
+}
+

 // ----------------------------------------------------------------------------
 // sorting stuff
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // sorting stuff
 // ----------------------------------------------------------------------------


@@ -2151,16 +2137,10 @@ public:
     static int CALLBACK Compare(LPARAM data1, LPARAM data2, LPARAM tree);
 
 private:
     static int CALLBACK Compare(LPARAM data1, LPARAM data2, LPARAM tree);
 
 private:

-    static wxTreeItemId GetIdFromData(wxTreeCtrl *tree, LPARAM item)
+    static wxTreeItemId GetIdFromData(LPARAM lParam)

     {
     {

-        wxTreeItemData *data = (wxTreeItemData *)item;
-        if ( tree->IsDataIndirect(data) )
-        {
-            data = ((wxTreeItemIndirectData *)data)->GetData();
+        return ((wxTreeItemParam*)lParam)->GetItem();

         }
         }

-
-        return data->GetId();
-    }

 };
 
 int CALLBACK wxTreeSortHelper::Compare(LPARAM pItem1,
 };
 
 int CALLBACK wxTreeSortHelper::Compare(LPARAM pItem1,


@@ -2172,14 +2152,8 @@ int CALLBACK wxTreeSortHelper::Compare(LPARAM pItem1,
 
     wxTreeCtrl *tree = (wxTreeCtrl *)htree;
 
 
     wxTreeCtrl *tree = (wxTreeCtrl *)htree;
 

-    return tree->OnCompareItems(GetIdFromData(tree, pItem1),
-                                GetIdFromData(tree, pItem2));
-}
-
-int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
-                               const wxTreeItemId& item2)
-{
-    return wxStrcmp(GetItemText(item1), GetItemText(item2));
+    return tree->OnCompareItems(GetIdFromData(pItem1),
+                                GetIdFromData(pItem2));

 }
 
 void wxTreeCtrl::SortChildren(const wxTreeItemId& item)
 }
 
 void wxTreeCtrl::SortChildren(const wxTreeItemId& item)


@@ -2189,7 +2163,11 @@ void wxTreeCtrl::SortChildren(const wxTreeItemId& item)
     // rely on the fact that TreeView_SortChildren does the same thing as our
     // default behaviour, i.e. sorts items alphabetically and so call it
     // directly if we're not in derived class (much more efficient!)
     // rely on the fact that TreeView_SortChildren does the same thing as our
     // default behaviour, i.e. sorts items alphabetically and so call it
     // directly if we're not in derived class (much more efficient!)

-    if ( GetClassInfo() == CLASSINFO(wxTreeCtrl) )
+    // RN: Note that if you find you're code doesn't sort as expected this
+    //     may be why as if you don't use the DECLARE_CLASS/IMPLEMENT_CLASS
+    //     combo for your derived wxTreeCtrl if will sort without
+    //     OnCompareItems
+    if ( GetClassInfo() == wxCLASSINFO(wxTreeCtrl) )

     {
         TreeView_SortChildren(GetHwnd(), HITEM(item), 0);
     }
     {
         TreeView_SortChildren(GetHwnd(), HITEM(item), 0);
     }


@@ -2207,8 +2185,26 @@ void wxTreeCtrl::SortChildren(const wxTreeItemId& item)
 // implementation
 // ----------------------------------------------------------------------------
 
 // implementation
 // ----------------------------------------------------------------------------
 

-bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
+bool wxTreeCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
+{
+    if ( msg->message == WM_KEYDOWN )
+    {
+        // Only eat VK_RETURN if not being used by the application in
+        // conjunction with modifiers
+        if ( (msg->wParam == VK_RETURN) && !wxIsAnyModifierDown() )
+        {
+            // we need VK_RETURN to generate wxEVT_COMMAND_TREE_ITEM_ACTIVATED
+            return false;
+        }
+    }
+
+    return wxTreeCtrlBase::MSWShouldPreProcessMessage(msg);
+}
+
+bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id_)

 {
 {

+    const int id = (signed short)id_;
+

     if ( cmd == EN_UPDATE )
     {
         wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id);
     if ( cmd == EN_UPDATE )
     {
         wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id);


@@ -2231,131 +2227,798 @@ bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
     return true;
 }
 
     return true;
 }
 

+bool wxTreeCtrl::MSWIsOnItem(unsigned flags) const
+{
+    unsigned mask = TVHT_ONITEM;
+    if ( HasFlag(wxTR_FULL_ROW_HIGHLIGHT) )
+        mask |= TVHT_ONITEMINDENT | TVHT_ONITEMRIGHT;
+
+    return (flags & mask) != 0;
+}
+
+bool wxTreeCtrl::MSWHandleSelectionKey(unsigned vkey)
+{
+    const bool bCtrl = wxIsCtrlDown();
+    const bool bShift = wxIsShiftDown();
+    const HTREEITEM htSel = (HTREEITEM)TreeView_GetSelection(GetHwnd());
+
+    switch ( vkey )
+    {
+        case VK_RETURN:
+        case VK_SPACE:
+            if ( !htSel )
+                break;
+
+            if ( vkey != VK_RETURN && bCtrl )
+            {
+                wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                          this, htSel);
+                changingEvent.m_itemOld = htSel;
+
+                if ( IsTreeEventAllowed(changingEvent) )
+                {
+                    DoToggleItemSelection(wxTreeItemId(htSel));
+
+                    wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                             this, htSel);
+                    changedEvent.m_itemOld = htSel;
+                    (void)HandleTreeEvent(changedEvent);
+                }
+            }
+            else
+            {
+                wxArrayTreeItemIds selections;
+                size_t count = GetSelections(selections);
+
+                if ( count != 1 || HITEM(selections[0]) != htSel )
+                {
+                    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                              this, htSel);
+                    changingEvent.m_itemOld = htSel;
+
+                    if ( IsTreeEventAllowed(changingEvent) )
+                    {
+                        DoUnselectAll();
+                        DoSelectItem(wxTreeItemId(htSel));
+
+                        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                 this, htSel);
+                        changedEvent.m_itemOld = htSel;
+                        (void)HandleTreeEvent(changedEvent);
+                    }
+                }
+            }
+            break;
+
+        case VK_UP:
+        case VK_DOWN:
+            if ( !bCtrl && !bShift )
+            {
+                wxArrayTreeItemIds selections;
+                wxTreeItemId next;
+
+                if ( htSel )
+                {
+                    next = vkey == VK_UP
+                            ? TreeView_GetPrevVisible(GetHwnd(), htSel)
+                            : TreeView_GetNextVisible(GetHwnd(), htSel);
+                }
+                else
+                {
+                    next = GetRootItem();
+
+                    if ( IsHiddenRoot(next) )
+                        next = TreeView_GetChild(GetHwnd(), HITEM(next));
+                }
+
+                if ( !next.IsOk() )
+                {
+                    break;
+                }
+
+                wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                          this, next);
+                changingEvent.m_itemOld = htSel;
+
+                if ( IsTreeEventAllowed(changingEvent) )
+                {
+                    DoUnselectAll();
+                    DoSelectItem(next);
+                    SetFocusedItem(next);
+
+                    wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                             this, next);
+                    changedEvent.m_itemOld = htSel;
+                    (void)HandleTreeEvent(changedEvent);
+                }
+            }
+            else if ( htSel )
+            {
+                wxTreeItemId next = vkey == VK_UP
+                    ? TreeView_GetPrevVisible(GetHwnd(), htSel)
+                    : TreeView_GetNextVisible(GetHwnd(), htSel);
+
+                if ( !next.IsOk() )
+                {
+                    break;
+                }
+
+                if ( !m_htSelStart )
+                {
+                    m_htSelStart = htSel;
+                }
+
+                if ( bShift && SelectRange(GetHwnd(), HITEM(m_htSelStart), HITEM(next),
+                     SR_UNSELECT_OTHERS | SR_SIMULATE) )
+                {
+                    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, next);
+                    changingEvent.m_itemOld = htSel;
+
+                    if ( IsTreeEventAllowed(changingEvent) )
+                    {
+                        SelectRange(GetHwnd(), HITEM(m_htSelStart), HITEM(next),
+                                    SR_UNSELECT_OTHERS);
+
+                        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this, next);
+                        changedEvent.m_itemOld = htSel;
+                        (void)HandleTreeEvent(changedEvent);
+                    }
+                }
+
+                SetFocusedItem(next);
+            }
+            break;
+
+        case VK_LEFT:
+            if ( HasChildren(htSel) && IsExpanded(htSel) )
+            {
+                Collapse(htSel);
+            }
+            else
+            {
+                wxTreeItemId next = GetItemParent(htSel);
+
+                if ( next.IsOk() && !IsHiddenRoot(next) )
+                {
+                    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                              this, next);
+                    changingEvent.m_itemOld = htSel;
+
+                    if ( IsTreeEventAllowed(changingEvent) )
+                    {
+                        DoUnselectAll();
+                        DoSelectItem(next);
+                        SetFocusedItem(next);
+
+                        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                 this, next);
+                        changedEvent.m_itemOld = htSel;
+                        (void)HandleTreeEvent(changedEvent);
+                    }
+                }
+            }
+            break;
+
+        case VK_RIGHT:
+            if ( !IsVisible(htSel) )
+            {
+                EnsureVisible(htSel);
+            }
+
+            if ( !HasChildren(htSel) )
+                break;
+
+            if ( !IsExpanded(htSel) )
+            {
+                Expand(htSel);
+            }
+            else
+            {
+                wxTreeItemId next = TreeView_GetChild(GetHwnd(), htSel);
+
+                wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, next);
+                changingEvent.m_itemOld = htSel;
+
+                if ( IsTreeEventAllowed(changingEvent) )
+                {
+                    DoUnselectAll();
+                    DoSelectItem(next);
+                    SetFocusedItem(next);
+
+                    wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this, next);
+                    changedEvent.m_itemOld = htSel;
+                    (void)HandleTreeEvent(changedEvent);
+                }
+            }
+            break;
+
+        case VK_HOME:
+        case VK_END:
+            {
+                wxTreeItemId next = GetRootItem();
+
+                if ( IsHiddenRoot(next) )
+                {
+                    next = TreeView_GetChild(GetHwnd(), HITEM(next));
+                }
+
+                if ( !next.IsOk() )
+                    break;
+
+                if ( vkey == VK_END )
+                {
+                    for ( ;; )
+                    {
+                        wxTreeItemId nextTemp = TreeView_GetNextVisible(
+                                                    GetHwnd(), HITEM(next));
+
+                        if ( !nextTemp.IsOk() )
+                            break;
+
+                        next = nextTemp;
+                    }
+                }
+
+                if ( htSel == HITEM(next) )
+                    break;
+
+                if ( bShift )
+                {
+                    if ( !m_htSelStart )
+                    {
+                        m_htSelStart = htSel;
+                    }
+
+                    if ( SelectRange(GetHwnd(),
+                                     HITEM(m_htSelStart), HITEM(next),
+                                     SR_UNSELECT_OTHERS | SR_SIMULATE) )
+                    {
+                        wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                                  this, next);
+                        changingEvent.m_itemOld = htSel;
+
+                        if ( IsTreeEventAllowed(changingEvent) )
+                        {
+                            SelectRange(GetHwnd(),
+                                        HITEM(m_htSelStart), HITEM(next),
+                                        SR_UNSELECT_OTHERS);
+                            SetFocusedItem(next);
+
+                            wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                     this, next);
+                            changedEvent.m_itemOld = htSel;
+                            (void)HandleTreeEvent(changedEvent);
+                        }
+                    }
+                }
+                else // no Shift
+                {
+                    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                              this, next);
+                    changingEvent.m_itemOld = htSel;
+
+                    if ( IsTreeEventAllowed(changingEvent) )
+                    {
+                        DoUnselectAll();
+                        DoSelectItem(next);
+                        SetFocusedItem(next);
+
+                        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                 this, next);
+                        changedEvent.m_itemOld = htSel;
+                        (void)HandleTreeEvent(changedEvent);
+                    }
+                }
+            }
+            break;
+
+        case VK_PRIOR:
+        case VK_NEXT:
+            if ( bCtrl )
+            {
+                wxTreeItemId firstVisible = GetFirstVisibleItem();
+                size_t visibleCount = TreeView_GetVisibleCount(GetHwnd());
+                wxTreeItemId nextAdjacent = (vkey == VK_PRIOR) ?
+                    TreeView_GetPrevVisible(GetHwnd(), HITEM(firstVisible)) :
+                    TreeView_GetNextVisible(GetHwnd(), HITEM(firstVisible));
+
+                if ( !nextAdjacent )
+                {
+                    break;
+                }
+
+                wxTreeItemId nextStart = firstVisible;
+
+                for ( size_t n = 1; n < visibleCount; n++ )
+                {
+                    wxTreeItemId nextTemp = (vkey == VK_PRIOR) ?
+                        TreeView_GetPrevVisible(GetHwnd(), HITEM(nextStart)) :
+                        TreeView_GetNextVisible(GetHwnd(), HITEM(nextStart));
+
+                    if ( nextTemp.IsOk() )
+                    {
+                        nextStart = nextTemp;
+                    }
+                    else
+                    {
+                        break;
+                    }
+                }
+
+                EnsureVisible(nextStart);
+
+                if ( vkey == VK_NEXT )
+                {
+                    wxTreeItemId nextEnd = nextStart;
+
+                    for ( size_t n = 1; n < visibleCount; n++ )
+                    {
+                        wxTreeItemId nextTemp =
+                            TreeView_GetNextVisible(GetHwnd(), HITEM(nextEnd));
+
+                        if ( nextTemp.IsOk() )
+                        {
+                            nextEnd = nextTemp;
+                        }
+                        else
+                        {
+                            break;
+                        }
+                    }
+
+                    EnsureVisible(nextEnd);
+                }
+            }
+            else // no Ctrl
+            {
+                size_t visibleCount = TreeView_GetVisibleCount(GetHwnd());
+                wxTreeItemId nextAdjacent = (vkey == VK_PRIOR) ?
+                    TreeView_GetPrevVisible(GetHwnd(), htSel) :
+                    TreeView_GetNextVisible(GetHwnd(), htSel);
+
+                if ( !nextAdjacent )
+                {
+                    break;
+                }
+
+                wxTreeItemId next(htSel);
+
+                for ( size_t n = 1; n < visibleCount; n++ )
+                {
+                    wxTreeItemId nextTemp = vkey == VK_PRIOR ?
+                        TreeView_GetPrevVisible(GetHwnd(), HITEM(next)) :
+                        TreeView_GetNextVisible(GetHwnd(), HITEM(next));
+
+                    if ( !nextTemp.IsOk() )
+                        break;
+
+                    next = nextTemp;
+                }
+
+                wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                          this, next);
+                changingEvent.m_itemOld = htSel;
+
+                if ( IsTreeEventAllowed(changingEvent) )
+                {
+                    DoUnselectAll();
+                    m_htSelStart.Unset();
+                    DoSelectItem(next);
+                    SetFocusedItem(next);
+
+                    wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                             this, next);
+                    changedEvent.m_itemOld = htSel;
+                    (void)HandleTreeEvent(changedEvent);
+                }
+            }
+            break;
+
+        default:
+            return false;
+    }
+
+    return true;
+}
+
+bool wxTreeCtrl::MSWHandleTreeKeyDownEvent(WXWPARAM wParam, WXLPARAM lParam)
+{
+    wxTreeEvent keyEvent(wxEVT_COMMAND_TREE_KEY_DOWN, this);
+    keyEvent.m_evtKey = CreateKeyEvent(wxEVT_KEY_DOWN, wParam, lParam);
+
+    bool processed = HandleTreeEvent(keyEvent);
+
+    // generate a separate event for Space/Return
+    if ( !wxIsCtrlDown() && !wxIsShiftDown() && !wxIsAltDown() &&
+         ((wParam == VK_SPACE) || (wParam == VK_RETURN)) )
+    {
+        const HTREEITEM htSel = (HTREEITEM)TreeView_GetSelection(GetHwnd());
+        if ( htSel )
+        {
+            wxTreeEvent activatedEvent(wxEVT_COMMAND_TREE_ITEM_ACTIVATED,
+                                       this, htSel);
+            (void)HandleTreeEvent(activatedEvent);
+        }
+    }
+
+    return processed;
+}
+

 // we hook into WndProc to process WM_MOUSEMOVE/WM_BUTTONUP messages - as we
 // only do it during dragging, minimize wxWin overhead (this is important for
 // WM_MOUSEMOVE as they're a lot of them) by catching Windows messages directly
 // instead of passing by wxWin events
 // we hook into WndProc to process WM_MOUSEMOVE/WM_BUTTONUP messages - as we
 // only do it during dragging, minimize wxWin overhead (this is important for
 // WM_MOUSEMOVE as they're a lot of them) by catching Windows messages directly
 // instead of passing by wxWin events

-WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+WXLRESULT
+wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)

 {
     bool processed = false;
     WXLRESULT rc = 0;
 {
     bool processed = false;
     WXLRESULT rc = 0;

-    bool isMultiple = (GetWindowStyle() & wxTR_MULTIPLE) != 0;
+    bool isMultiple = HasFlag(wxTR_MULTIPLE);
+
+    if ( nMsg == WM_CONTEXTMENU )
+    {
+        int x = GET_X_LPARAM(lParam),
+            y = GET_Y_LPARAM(lParam);
+
+        // the item for which the menu should be shown
+        wxTreeItemId item;
+
+        // the position where the menu should be shown in client coordinates
+        // (so that it can be passed directly to PopupMenu())
+        wxPoint pt;
+
+        if ( x == -1 || y == -1 )
+        {
+            // this means that the event was generated from keyboard (e.g. with
+            // Shift-F10 or special Windows menu key)
+            //
+            // use the Explorer standard of putting the menu at the left edge
+            // of the text, in the vertical middle of the text
+            item = wxTreeItemId(TreeView_GetSelection(GetHwnd()));
+            if ( item.IsOk() )
+            {
+                // Use the bounding rectangle of only the text part
+                wxRect rect;
+                GetBoundingRect(item, rect, true);
+                pt = wxPoint(rect.GetX(), rect.GetY() + rect.GetHeight() / 2);
+            }
+        }
+        else // event from mouse, use mouse position
+        {
+            pt = ScreenToClient(wxPoint(x, y));
+
+            TV_HITTESTINFO tvhti;
+            tvhti.pt.x = pt.x;
+            tvhti.pt.y = pt.y;
+
+            if ( TreeView_HitTest(GetHwnd(), &tvhti) )
+                item = wxTreeItemId(tvhti.hItem);
+        }
+
+        // create the event
+        if ( item.IsOk() )
+        {
+            wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_MENU, this, item);
+
+            event.m_pointDrag = pt;
+
+            if ( HandleTreeEvent(event) )
+                processed = true;
+            //else: continue with generating wxEVT_CONTEXT_MENU in base class code
+        }
+    }
+    else if ( (nMsg >= WM_MOUSEFIRST) && (nMsg <= WM_MOUSELAST) )
+    {
+        // we only process mouse messages here and these parameters have the
+        // same meaning for all of them
+        int x = GET_X_LPARAM(lParam),
+            y = GET_Y_LPARAM(lParam);
+
+        TV_HITTESTINFO tvht;
+        tvht.pt.x = x;
+        tvht.pt.y = y;
+
+        HTREEITEM htOldItem = TreeView_GetSelection(GetHwnd());
+        HTREEITEM htItem = TreeView_HitTest(GetHwnd(), &tvht);
+
+        switch ( nMsg )
+        {
+            case WM_LBUTTONDOWN:
+                if ( !isMultiple )
+                    break;
+
+                m_htClickedItem.Unset();
+
+                if ( !MSWIsOnItem(tvht.flags) )
+                {
+                    if ( tvht.flags & TVHT_ONITEMBUTTON )
+                    {
+                        // either it's going to be handled by user code or
+                        // we're going to use it ourselves to toggle the
+                        // branch, in either case don't pass it to the base
+                        // class which would generate another mouse click event
+                        // for it even though it's already handled here
+                        processed = true;
+                        SetFocus();
+
+                        if ( !HandleMouseEvent(nMsg, x, y, wParam) )
+                        {
+                            if ( !IsExpanded(htItem) )
+                            {
+                                Expand(htItem);
+                            }
+                            else
+                            {
+                                Collapse(htItem);
+                            }
+                        }
+                    }
+
+                    m_focusLost = false;
+                    break;
+                }
+
+                processed = true;
+                SetFocus();
+                m_htClickedItem = (WXHTREEITEM) htItem;
+                m_ptClick = wxPoint(x, y);
+
+                if ( wParam & MK_CONTROL )
+                {
+                    if ( HandleMouseEvent(nMsg, x, y, wParam) )
+                    {
+                        m_htClickedItem.Unset();
+                        break;
+                    }
+
+                    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                              this, htItem);
+                    changingEvent.m_itemOld = htOldItem;
+
+                    if ( IsTreeEventAllowed(changingEvent) )
+                    {
+                        // toggle selected state
+                        DoToggleItemSelection(wxTreeItemId(htItem));
+
+                        SetFocusedItem(wxTreeItemId(htItem));
+
+                        // reset on any click without Shift
+                        m_htSelStart.Unset();
+
+                        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                 this, htItem);
+                        changedEvent.m_itemOld = htOldItem;
+                        (void)HandleTreeEvent(changedEvent);
+                    }
+                }
+                else if ( wParam & MK_SHIFT )
+                {
+                    if ( HandleMouseEvent(nMsg, x, y, wParam) )
+                    {
+                        m_htClickedItem.Unset();
+                        break;
+                    }
+
+                    int srFlags = 0;
+                    bool willChange = true;
+
+                    if ( !(wParam & MK_CONTROL) )
+                    {
+                        srFlags |= SR_UNSELECT_OTHERS;
+                    }
+
+                    if ( !m_htSelStart )
+                    {
+                        // take the focused item
+                        m_htSelStart = htOldItem;
+                    }
+                    else
+                    {
+                        willChange = SelectRange(GetHwnd(), HITEM(m_htSelStart),
+                                                 htItem, srFlags | SR_SIMULATE);
+                    }
+
+                    if ( willChange )
+                    {
+                        wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                                  this, htItem);
+                        changingEvent.m_itemOld = htOldItem;
+
+                        if ( IsTreeEventAllowed(changingEvent) )
+                        {
+                            // this selects all items between the starting one
+                            // and the current
+                            if ( m_htSelStart )
+                            {
+                                SelectRange(GetHwnd(), HITEM(m_htSelStart),
+                                            htItem, srFlags);
+                            }
+                            else
+                            {
+                                DoSelectItem(wxTreeItemId(htItem));
+                            }
+
+                            SetFocusedItem(wxTreeItemId(htItem));
+
+                            wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                     this, htItem);
+                            changedEvent.m_itemOld = htOldItem;
+                            (void)HandleTreeEvent(changedEvent);
+                        }
+                    }
+                }
+                else // normal click
+                {
+                    // avoid doing anything if we click on the only
+                    // currently selected item

 
 

-#if (!defined(_WIN32_WCE)) || (defined(_WIN32_WCE) && (_WIN32_WCE >= 400))
-    if (nMsg == WM_CONTEXTMENU)
-    {
-        wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_MENU, GetId() );
-        event.m_item = GetSelection();
-        event.SetEventObject( this );
-        GetEventHandler()->ProcessEvent( event );
+                    wxArrayTreeItemIds selections;
+                    size_t count = GetSelections(selections);

 
 

-        return rc;
-    }
-#endif // __SMARTPHONE__
+                    if ( count == 0 ||
+                         count > 1 ||
+                         HITEM(selections[0]) != htItem )
+                    {
+                        if ( HandleMouseEvent(nMsg, x, y, wParam) )
+                        {
+                            m_htClickedItem.Unset();
+                            break;
+                        }

 
 

-    if ( (nMsg >= WM_MOUSEFIRST) && (nMsg <= WM_MOUSELAST) )
-    {
-        // we only process mouse messages here and these parameters have the
-        // same meaning for all of them
-        int x = GET_X_LPARAM(lParam),
-            y = GET_Y_LPARAM(lParam);
-        HTREEITEM htItem = GetItemFromPoint(GetHwnd(), x, y);
+                        // clear the previously selected items, if the user
+                        // clicked outside of the present selection, otherwise,
+                        // perform the deselection on mouse-up, this allows
+                        // multiple drag and drop to work.
+                        if ( !IsItemSelected(GetHwnd(), htItem))
+                        {
+                            wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                                      this, htItem);
+                            changingEvent.m_itemOld = htOldItem;

 
 

-        switch ( nMsg )
-        {
-            case WM_RBUTTONDOWN:
-                // if the item we are about to right click on is not already
-                // selected or if we click outside of any item, remove the
-                // entire previous selection
-                if ( !htItem || !::IsItemSelected(GetHwnd(), htItem) )
-                {
-                    UnselectAll();
+                            if ( IsTreeEventAllowed(changingEvent) )
+                            {
+                                DoUnselectAll();
+                                DoSelectItem(wxTreeItemId(htItem));
+                                SetFocusedItem(wxTreeItemId(htItem));
+
+                                wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                         this, htItem);
+                                changedEvent.m_itemOld = htOldItem;
+                                (void)HandleTreeEvent(changedEvent);
+                            }
+                        }
+                        else
+                        {
+                            SetFocusedItem(wxTreeItemId(htItem));
+                            m_mouseUpDeselect = true;
+                        }
+                    }
+                    else // click on a single selected item
+                    {
+                        // don't interfere with the default processing in
+                        // WM_MOUSEMOVE handler below as the default window
+                        // proc will start the drag itself if we let have
+                        // WM_LBUTTONDOWN
+                        m_htClickedItem.Unset();
+
+                        // prevent in-place editing from starting if focus lost
+                        // since previous click
+                        if ( m_focusLost )
+                        {
+                            ClearFocusedItem();
+                            DoSelectItem(wxTreeItemId(htItem));
+                            SetFocusedItem(wxTreeItemId(htItem));
+                        }
+                        else
+                        {
+                            processed = false;
+                        }
+                    }
+
+                    // reset on any click without Shift
+                    m_htSelStart.Unset();

                 }
 
                 }
 

-                // select item and set the focus to the
-                // newly selected item
-                ::SelectItem(GetHwnd(), htItem);
-                ::SetFocus(GetHwnd(), htItem);
-                break;
+                m_focusLost = false;

 
 

-#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-            case WM_LBUTTONDOWN:
-                if ( htItem && isMultiple )
+                // we consumed the event so we need to trigger state image
+                // click if needed
+                if ( processed )

                 {
                 {

-                    if ( wParam & MK_CONTROL )
+                    if ( tvht.flags & TVHT_ONITEMSTATEICON )

                     {
                     {

-                        SetFocus();
+                        m_triggerStateImageClick = true;
+                    }
+                }
+                break;

 
 

-                        // toggle selected state
-                        ::ToggleItemSelection(GetHwnd(), htItem);
+            case WM_RBUTTONDOWN:
+                if ( !isMultiple )
+                    break;

 
 

-                        ::SetFocus(GetHwnd(), htItem);
+                processed = true;
+                SetFocus();

 
 

-                        // reset on any click without Shift
-                        m_htSelStart.Unset();
+                if ( HandleMouseEvent(nMsg, x, y, wParam) || !htItem )
+                {
+                    break;
+                }

 
 

-                        processed = true;
+                // default handler removes the highlight from the currently
+                // focused item when right mouse button is pressed on another
+                // one but keeps the remaining items highlighted, which is
+                // confusing, so override this default behaviour
+                if ( !IsItemSelected(GetHwnd(), htItem) )
+                {
+                    wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                              this, htItem);
+                    changingEvent.m_itemOld = htOldItem;
+
+                    if ( IsTreeEventAllowed(changingEvent) )
+                    {
+                        DoUnselectAll();
+                        DoSelectItem(wxTreeItemId(htItem));
+                        SetFocusedItem(wxTreeItemId(htItem));
+
+                        wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                 this, htItem);
+                        changedEvent.m_itemOld = htOldItem;
+                        (void)HandleTreeEvent(changedEvent);

                     }
                     }

-                    else if ( wParam & MK_SHIFT )
+                }
+
+                break;
+
+            case WM_MOUSEMOVE:
+#ifndef __WXWINCE__
+                if ( m_htClickedItem )
+                {
+                    int cx = abs(m_ptClick.x - x);
+                    int cy = abs(m_ptClick.y - y);
+
+                    if ( cx > ::GetSystemMetrics(SM_CXDRAG) ||
+                            cy > ::GetSystemMetrics(SM_CYDRAG) )

                     {
                     {

-                        // this selects all items between the starting one and
-                        // the current
+                        NM_TREEVIEW tv;
+                        wxZeroMemory(tv);

 
 

-                        if ( !m_htSelStart )
-                        {
-                            // take the focused item
-                            m_htSelStart = TreeView_GetSelection(GetHwnd());
-                        }
+                        tv.hdr.hwndFrom = GetHwnd();
+                        tv.hdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID);
+                        tv.hdr.code = TVN_BEGINDRAG;

 
 

-                        SelectRange(GetHwnd(), HITEM(m_htSelStart), htItem,
-                                    !(wParam & MK_CONTROL));
+                        tv.itemNew.hItem = HITEM(m_htClickedItem);

 
 

-                        ::SetFocus(GetHwnd(), htItem);

 
 

-                        processed = true;
-                    }
-                    else // normal click
-                    {
-                        // avoid doing anything if we click on the only
-                        // currently selected item
-
-                        wxArrayTreeItemIds selections;
-                        size_t count = GetSelections(selections);
-                        if ( count == 0 ||
-                             count > 1 ||
-                             HITEM_PTR(selections[0]) != htItem )
-                        {
-                            // clear the previously selected items, if the
-                            // user clicked outside of the present selection.
-                            // otherwise, perform the deselection on mouse-up.
-                            // this allows multiple drag and drop to work.
+                        TVITEM tviAux;
+                        wxZeroMemory(tviAux);

 
 

-                            if (IsItemSelected(GetHwnd(), htItem))
-                            {
-                                ::SetFocus(GetHwnd(), htItem);
-                            }
-                             else
-                            {
-                                UnselectAll();
+                        tviAux.hItem = HITEM(m_htClickedItem);
+                        tviAux.mask = TVIF_STATE | TVIF_PARAM;
+                        tviAux.stateMask = 0xffffffff;
+                        TreeView_GetItem(GetHwnd(), &tviAux);

 
 

-                                // prevent the click from starting in-place editing
-                                // which should only happen if we click on the
-                                // already selected item (and nothing else is
-                                // selected)
+                        tv.itemNew.state = tviAux.state;
+                        tv.itemNew.lParam = tviAux.lParam;

 
 

-                                TreeView_SelectItem(GetHwnd(), 0);
-                                ::SelectItem(GetHwnd(), htItem);
-                            }
-                        }
+                        tv.ptDrag.x = x;
+                        tv.ptDrag.y = y;

 
 

-                        // reset on any click without Shift
-                        m_htSelStart.Unset();
+                        // do it before SendMessage() call below to avoid
+                        // reentrancies here if there is another WM_MOUSEMOVE
+                        // in the queue already
+                        m_htClickedItem.Unset();
+
+                        ::SendMessage(GetHwndOf(GetParent()), WM_NOTIFY,
+                                      tv.hdr.idFrom, (LPARAM)&tv );
+
+                        // don't pass it to the default window proc, it would
+                        // start dragging again
+                        processed = true;

                     }
                 }
                     }
                 }

-                break;
-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+#endif // __WXWINCE__

 
 

-            case WM_MOUSEMOVE:
+#if wxUSE_DRAGIMAGE

                 if ( m_dragImage )
                 {
                     m_dragImage->Move(wxPoint(x, y));
                 if ( m_dragImage )
                 {
                     m_dragImage->Move(wxPoint(x, y));


@@ -2368,147 +3031,158 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                         m_dragImage->Show();
                     }
                 }
                         m_dragImage->Show();
                     }
                 }

+#endif // wxUSE_DRAGIMAGE

                 break;
 
             case WM_LBUTTONUP:
                 break;
 
             case WM_LBUTTONUP:

-
-                // facilitates multiple drag-and-drop
-                if (htItem && isMultiple)
+                if ( isMultiple )

                 {
                 {

-                    wxArrayTreeItemIds selections;
-                    size_t count = GetSelections(selections);
+                    // deselect other items if needed
+                    if ( htItem )
+                    {
+                        if ( m_mouseUpDeselect )
+                        {
+                            m_mouseUpDeselect = false;
+
+                            wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING,
+                                                      this, htItem);
+                            changingEvent.m_itemOld = htOldItem;
+
+                            if ( IsTreeEventAllowed(changingEvent) )
+                            {
+                                DoUnselectAll();
+                                DoSelectItem(wxTreeItemId(htItem));
+                                SetFocusedItem(wxTreeItemId(htItem));
+
+                                wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED,
+                                                         this, htItem);
+                                changedEvent.m_itemOld = htOldItem;
+                                (void)HandleTreeEvent(changedEvent);
+                            }
+                        }
+                    }

 
 

-                    if (count > 1 &&
-                        !(wParam & MK_CONTROL) &&
-                        !(wParam & MK_SHIFT))
+                    m_htClickedItem.Unset();
+
+                    if ( m_triggerStateImageClick )
+                    {
+                        if ( tvht.flags & TVHT_ONITEMSTATEICON )
+                        {
+                            wxTreeEvent event(wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK,
+                                              this, htItem);
+                            (void)HandleTreeEvent(event);
+
+                            m_triggerStateImageClick = false;
+                            processed = true;
+                        }
+                    }
+
+                    if ( !m_dragStarted && MSWIsOnItem(tvht.flags) )

                     {
                     {

-                        UnselectAll();
-                        TreeView_SelectItem(GetHwnd(), htItem);
+                        processed = true;

                     }
                 }
 
                 // fall through
 
             case WM_RBUTTONUP:
                     }
                 }
 
                 // fall through
 
             case WM_RBUTTONUP:

+#if wxUSE_DRAGIMAGE

                 if ( m_dragImage )
                 {
                     m_dragImage->EndDrag();
                 if ( m_dragImage )
                 {
                     m_dragImage->EndDrag();

-                    delete m_dragImage;
-                    m_dragImage = NULL;
+                    wxDELETE(m_dragImage);

 
                     // generate the drag end event
 
                     // generate the drag end event

-                    wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, m_windowId);
-
-                    event.m_item = htItem;
+                    wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG,
+                                      this, htItem);

                     event.m_pointDrag = wxPoint(x, y);
                     event.m_pointDrag = wxPoint(x, y);

-                    event.SetEventObject(this);
-
-                    (void)GetEventHandler()->ProcessEvent(event);
+                    (void)HandleTreeEvent(event);

 
                     // if we don't do it, the tree seems to think that 2 items
                     // are selected simultaneously which is quite weird
                     TreeView_SelectDropTarget(GetHwnd(), 0);
                 }
 
                     // if we don't do it, the tree seems to think that 2 items
                     // are selected simultaneously which is quite weird
                     TreeView_SelectDropTarget(GetHwnd(), 0);
                 }

+#endif // wxUSE_DRAGIMAGE
+
+                if ( isMultiple && nMsg == WM_RBUTTONUP )
+                {
+                    // send NM_RCLICK
+                    NMHDR nmhdr;
+                    nmhdr.hwndFrom = GetHwnd();
+                    nmhdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID);
+                    nmhdr.code = NM_RCLICK;
+                    ::SendMessage(::GetParent(GetHwnd()), WM_NOTIFY,
+                                  nmhdr.idFrom, (LPARAM)&nmhdr);
+                    processed = true;
+                }
+
+                m_dragStarted = false;
+

                 break;
         }
     }
                 break;
         }
     }

-#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-    else if ( (nMsg == WM_SETFOCUS || nMsg == WM_KILLFOCUS) && isMultiple )
+    else if ( (nMsg == WM_SETFOCUS || nMsg == WM_KILLFOCUS) )

     {
     {

-        // the tree control greys out the selected item when it loses focus and
-        // paints it as selected again when it regains it, but it won't do it
-        // for the other items itself - help it
-        wxArrayTreeItemIds selections;
-        size_t count = GetSelections(selections);
-        RECT rect;
-        for ( size_t n = 0; n < count; n++ )
+        if ( isMultiple )

         {
         {

-            // TreeView_GetItemRect() will return false if item is not visible,
-            // which may happen perfectly well
-            if ( TreeView_GetItemRect(GetHwnd(), HITEM_PTR(selections[n]),
-                                      &rect, true) )
+            // the tree control greys out the selected item when it loses focus
+            // and paints it as selected again when it regains it, but it won't
+            // do it for the other items itself - help it
+            wxArrayTreeItemIds selections;
+            size_t count = GetSelections(selections);
+            TVGetItemRectParam param;
+
+            for ( size_t n = 0; n < count; n++ )

             {
             {

-                ::InvalidateRect(GetHwnd(), &rect, false);
+                // TreeView_GetItemRect() will return false if item is not
+                // visible, which may happen perfectly well
+                if ( wxTreeView_GetItemRect(GetHwnd(), HITEM(selections[n]),
+                                            param, TRUE) )
+                {
+                    ::InvalidateRect(GetHwnd(), &param.rect, FALSE);
+                }

             }
         }
             }
         }

-    }
-    else if ( nMsg == WM_KEYDOWN && isMultiple )
-    {
-        bool bCtrl = wxIsCtrlDown(),
-             bShift = wxIsShiftDown();
-
-        // we handle.arrows and space, but not page up/down and home/end: the
-        // latter should be easy, but not the former
-
-        HTREEITEM htSel = (HTREEITEM)TreeView_GetSelection(GetHwnd());
-        if ( !m_htSelStart )
-        {
-            m_htSelStart = htSel;
-        }

 
 

-        if ( wParam == VK_SPACE )
+        if ( nMsg == WM_KILLFOCUS )

         {
         {

-            if ( bCtrl )
-            {
-                ::ToggleItemSelection(GetHwnd(), htSel);
-            }
-            else
-            {
-                UnselectAll();
-
-                ::SelectItem(GetHwnd(), htSel);
-            }
-
-            processed = true;
+            m_focusLost = true;

         }
         }

-        else if ( wParam == VK_UP || wParam == VK_DOWN )
+    }
+    else if ( (nMsg == WM_KEYDOWN || nMsg == WM_SYSKEYDOWN) && isMultiple )
+    {
+        // normally we want to generate wxEVT_KEY_DOWN events from TVN_KEYDOWN
+        // notification but for the keys which can be used to change selection
+        // we need to do it from here so as to not apply the default behaviour
+        // if the events are handled by the user code
+        switch ( wParam )

         {
         {

-            if ( !bCtrl && !bShift )
-            {
-                // no modifiers, just clear selection and then let the default
-                // processing to take place
-                UnselectAll();
-            }
-            else if ( htSel )
-            {
-                (void)wxControl::MSWWindowProc(nMsg, wParam, lParam);
-
-                HTREEITEM htNext = (HTREEITEM)(wParam == VK_UP
-                                    ? TreeView_GetPrevVisible(GetHwnd(), htSel)
-                                    : TreeView_GetNextVisible(GetHwnd(), htSel));
-
-                if ( !htNext )
-                {
-                    // at the top/bottom
-                    htNext = htSel;
-                }
-
-                if ( bShift )
-                {
-                    SelectRange(GetHwnd(), HITEM(m_htSelStart), htNext);
-                }
-                else // bCtrl
+            case VK_RETURN:
+            case VK_SPACE:
+            case VK_UP:
+            case VK_DOWN:
+            case VK_LEFT:
+            case VK_RIGHT:
+            case VK_HOME:
+            case VK_END:
+            case VK_PRIOR:
+            case VK_NEXT:
+                if ( !HandleKeyDown(wParam, lParam) &&
+                        !MSWHandleTreeKeyDownEvent(wParam, lParam) )

                 {
                 {

-                    // without changing selection
-                    ::SetFocus(GetHwnd(), htNext);
+                    // use the key to update the selection if it was left
+                    // unprocessed
+                    MSWHandleSelectionKey(wParam);

                 }
 
                 }
 

+                // pretend that we did process it in any case as we already
+                // generated an event for it

                 processed = true;
                 processed = true;

-            }
-        }
-    }
-#endif // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-    else if ( nMsg == WM_CHAR )
-    {
-        // don't let the control process Space and Return keys because it
-        // doesn't do anything useful with them anyhow but always beeps
-        // annoyingly when it receives them and there is no way to turn it off
-        // simply if you just process TREEITEM_ACTIVATED event to which Space
-        // and Enter presses are mapped in your code
-        if ( wParam == VK_SPACE || wParam == VK_RETURN )
-        {
-            processed = true;
+
+            //default: for all the other keys leave processed as false so that
+            //         the tree control generates a TVN_KEYDOWN for us

         }
         }

+

     }
     else if ( nMsg == WM_COMMAND )
     {
     }
     else if ( nMsg == WM_COMMAND )
     {


@@ -2535,10 +3209,44 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
     return rc;
 }
 
     return rc;
 }
 

+WXLRESULT
+wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+    if ( nMsg == WM_CHAR )
+    {
+        // don't let the control process Space and Return keys because it
+        // doesn't do anything useful with them anyhow but always beeps
+        // annoyingly when it receives them and there is no way to turn it off
+        // simply if you just process TREEITEM_ACTIVATED event to which Space
+        // and Enter presses are mapped in your code
+        if ( wParam == VK_SPACE || wParam == VK_RETURN )
+            return 0;
+    }
+#if wxUSE_DRAGIMAGE
+    else if ( nMsg == WM_KEYDOWN )
+    {
+        if ( wParam == VK_ESCAPE )
+        {
+            if ( m_dragImage )
+            {
+                m_dragImage->EndDrag();
+                wxDELETE(m_dragImage);
+
+                // if we don't do it, the tree seems to think that 2 items
+                // are selected simultaneously which is quite weird
+                TreeView_SelectDropTarget(GetHwnd(), 0);
+            }
+        }
+    }
+#endif // wxUSE_DRAGIMAGE
+
+    return wxControl::MSWDefWindowProc(nMsg, wParam, lParam);
+}
+

 // process WM_NOTIFY Windows message
 bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 {
 // process WM_NOTIFY Windows message
 bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 {

-    wxTreeEvent event(wxEVT_NULL, m_windowId);
+    wxTreeEvent event(wxEVT_NULL, this);

     wxEventType eventType = wxEVT_NULL;
     NMHDR *hdr = (NMHDR *)lParam;
 
     wxEventType eventType = wxEVT_NULL;
     NMHDR *hdr = (NMHDR *)lParam;
 


@@ -2571,6 +3279,10 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 eventType = wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT;
                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 
                 eventType = wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT;
                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 

+                // although the user event handler may still veto it, it is
+                // important to set it now so that calls to SetItemText() from
+                // the event handler would change the text controls contents
+                m_idEdited =

                 event.m_item = info->item.hItem;
                 event.m_label = info->item.pszText;
                 event.m_editCancelled = false;
                 event.m_item = info->item.hItem;
                 event.m_label = info->item.pszText;
                 event.m_editCancelled = false;


@@ -2619,6 +3331,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 break;
             }
 
                 break;
             }
 

+#ifdef TVN_GETINFOTIP

         case TVN_GETINFOTIP:
             {
                 eventType = wxEVT_COMMAND_TREE_ITEM_GETTOOLTIP;
         case TVN_GETINFOTIP:
             {
                 eventType = wxEVT_COMMAND_TREE_ITEM_GETTOOLTIP;


@@ -2629,7 +3342,8 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 
                 break;
             }
 
                 break;
             }

-#endif
+#endif // TVN_GETINFOTIP
+#endif // !__WXWINCE__

 
         case TVN_GETDISPINFO:
             eventType = wxEVT_COMMAND_TREE_GET_INFO;
 
         case TVN_GETDISPINFO:
             eventType = wxEVT_COMMAND_TREE_GET_INFO;


@@ -2650,7 +3364,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         case TVN_ITEMEXPANDING:
         case TVN_ITEMEXPANDED:
             {
         case TVN_ITEMEXPANDING:
         case TVN_ITEMEXPANDED:
             {

-                NM_TREEVIEW* tv = (NM_TREEVIEW*)lParam;
+                NM_TREEVIEW *tv = (NM_TREEVIEW*)lParam;

 
                 int what;
                 switch ( tv->action )
 
                 int what;
                 switch ( tv->action )


@@ -2679,58 +3393,60 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 
         case TVN_KEYDOWN:
             {
 
         case TVN_KEYDOWN:
             {

-                eventType = wxEVT_COMMAND_TREE_KEY_DOWN;

                 TV_KEYDOWN *info = (TV_KEYDOWN *)lParam;
 
                 // fabricate the lParam and wParam parameters sufficiently
                 // similar to the ones from a "real" WM_KEYDOWN so that
                 // CreateKeyEvent() works correctly
                 TV_KEYDOWN *info = (TV_KEYDOWN *)lParam;
 
                 // fabricate the lParam and wParam parameters sufficiently
                 // similar to the ones from a "real" WM_KEYDOWN so that
                 // CreateKeyEvent() works correctly

-                WXLPARAM lParam =
-                     (::GetKeyState(VK_MENU) < 0 ? KF_ALTDOWN : 0) << 16;
+                return MSWHandleTreeKeyDownEvent(
+                        info->wVKey, (wxIsAltDown() ? KF_ALTDOWN : 0) << 16);
+            }

 
 

-                WXWPARAM wParam = info->wVKey;

 
 

-                int keyCode = wxCharCodeMSWToWX(info->wVKey);
-                if ( !keyCode )
-                {
-                    // wxCharCodeMSWToWX() returns 0 to indicate that this is a
-                    // simple ASCII key
-                    keyCode = wParam;
-                }
+        // Vista's tree control has introduced some problems with our
+        // multi-selection tree.  When TreeView_SelectItem() is called,
+        // the wrong items are deselected.

 
 

-                event.m_evtKey = CreateKeyEvent(wxEVT_KEY_DOWN,
-                                                keyCode,
-                                                lParam,
-                                                wParam);
+        // Fortunately, Vista provides a new notification, TVN_ITEMCHANGING
+        // that can be used to regulate this incorrect behaviour.  The
+        // following messages will allow only the unlocked item's selection
+        // state to change

 
 

-                // a separate event for Space/Return
-                if ( !wxIsCtrlDown() && !wxIsShiftDown() &&
-                     ((info->wVKey == VK_SPACE) || (info->wVKey == VK_RETURN)) )
+        case TVN_ITEMCHANGINGA:
+        case TVN_ITEMCHANGINGW:
+            {
+                // we only need to handles these in multi-select trees
+                if ( HasFlag(wxTR_MULTIPLE) )

                 {
                 {

-                    wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED,
-                                       m_windowId);
-                    event2.SetEventObject(this);
-                    if ( !(GetWindowStyle() & wxTR_MULTIPLE) )
+                    // get info about the item about to be changed
+                    NMTVITEMCHANGE* info = (NMTVITEMCHANGE*)lParam;
+                    if (TreeItemUnlocker::IsLocked(info->hItem))

                     {
                     {

-                        event2.m_item = GetSelection();
+                        // item's state is locked, don't allow the change
+                        // returning 1 will disallow the change
+                        *result = 1;
+                        return true;

                     }
                     }

-                    //else: don't know how to get it
-
-                    (void)GetEventHandler()->ProcessEvent(event2);

                 }
                 }

+
+                // allow the state change

             }
             }

-            break;
+            return false;

 
         // NB: MSLU is broken and sends TVN_SELCHANGEDA instead of
         //     TVN_SELCHANGEDW in Unicode mode under Win98. Therefore
         //     we have to handle both messages:
         case TVN_SELCHANGEDA:
         case TVN_SELCHANGEDW:
 
         // NB: MSLU is broken and sends TVN_SELCHANGEDA instead of
         //     TVN_SELCHANGEDW in Unicode mode under Win98. Therefore
         //     we have to handle both messages:
         case TVN_SELCHANGEDA:
         case TVN_SELCHANGEDW:

-            eventType = wxEVT_COMMAND_TREE_SEL_CHANGED;
+            if ( !m_changingSelection )
+            {
+                eventType = wxEVT_COMMAND_TREE_SEL_CHANGED;
+            }

             // fall through
 
         case TVN_SELCHANGINGA:
         case TVN_SELCHANGINGW:
             // fall through
 
         case TVN_SELCHANGINGA:
         case TVN_SELCHANGINGW:

+            if ( !m_changingSelection )

             {
                 if ( eventType == wxEVT_NULL )
                     eventType = wxEVT_COMMAND_TREE_SEL_CHANGING;
             {
                 if ( eventType == wxEVT_NULL )
                     eventType = wxEVT_COMMAND_TREE_SEL_CHANGING;


@@ -2739,22 +3455,36 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 if (hdr->code == TVN_SELCHANGINGW ||
                     hdr->code == TVN_SELCHANGEDW)
                 {
                 if (hdr->code == TVN_SELCHANGINGW ||
                     hdr->code == TVN_SELCHANGEDW)
                 {

-                    NM_TREEVIEWW* tv = (NM_TREEVIEWW *)lParam;
+                    NM_TREEVIEWW *tv = (NM_TREEVIEWW *)lParam;

                     event.m_item = tv->itemNew.hItem;
                     event.m_itemOld = tv->itemOld.hItem;
                 }
                 else
                 {
                     event.m_item = tv->itemNew.hItem;
                     event.m_itemOld = tv->itemOld.hItem;
                 }
                 else
                 {

-                    NM_TREEVIEWA* tv = (NM_TREEVIEWA *)lParam;
+                    NM_TREEVIEWA *tv = (NM_TREEVIEWA *)lParam;

                     event.m_item = tv->itemNew.hItem;
                     event.m_itemOld = tv->itemOld.hItem;
                 }
             }
                     event.m_item = tv->itemNew.hItem;
                     event.m_itemOld = tv->itemOld.hItem;
                 }
             }

+
+            // we receive this message from WM_LBUTTONDOWN handler inside
+            // comctl32.dll and so before the click is passed to
+            // DefWindowProc() which sets the focus to the window which was
+            // clicked and this can lead to unexpected event sequences: for
+            // example, we may get a "selection change" event from the tree
+            // before getting a "kill focus" event for the text control which
+            // had the focus previously, thus breaking user code doing input
+            // validation
+            //
+            // to avoid such surprises, we force the generation of focus events
+            // now, before we generate the selection change ones
+            if ( !m_changingSelection && !m_isBeingDeleted )
+                SetFocus();

             break;
 
             break;
 

-            // instead of explicitly checking for _WIN32_IE, check if the
-            // required symbols are available in the headers
-#if defined(CDDS_PREPAINT) && !wxUSE_COMCTL32_SAFELY
+        // instead of explicitly checking for _WIN32_IE, check if the
+        // required symbols are available in the headers
+#if defined(CDDS_PREPAINT)

         case NM_CUSTOMDRAW:
             {
                 LPNMTVCUSTOMDRAW lptvcd = (LPNMTVCUSTOMDRAW)lParam;
         case NM_CUSTOMDRAW:
             {
                 LPNMTVCUSTOMDRAW lptvcd = (LPNMTVCUSTOMDRAW)lParam;


@@ -2766,6 +3496,71 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                         // notify us before painting each item
                         *result = m_hasAnyAttr ? CDRF_NOTIFYITEMDRAW
                                                : CDRF_DODEFAULT;
                         // notify us before painting each item
                         *result = m_hasAnyAttr ? CDRF_NOTIFYITEMDRAW
                                                : CDRF_DODEFAULT;

+
+                        // windows in TreeCtrl use one-based index for item state images,
+                        // 0 indexed image is not being used, we're using zero-based index,
+                        // so we have to add temp image (of zero index) to state image list
+                        // before we draw any item, then after items are drawn we have to
+                        // delete it (in POSTPAINT notify)
+                        if (m_imageListState && m_imageListState->GetImageCount() > 0)
+                        {
+                            typedef BOOL (wxSTDCALL *ImageList_Copy_t)
+                                (HIMAGELIST, int, HIMAGELIST, int, UINT);
+                            static ImageList_Copy_t s_pfnImageList_Copy = NULL;
+                            static bool loaded = false;
+
+                            if ( !loaded )
+                            {
+                                wxLoadedDLL dllComCtl32(wxT("comctl32.dll"));
+                                if ( dllComCtl32.IsLoaded() )
+                                {
+                                    wxDL_INIT_FUNC(s_pfn, ImageList_Copy, dllComCtl32);
+                                    loaded = true;
+                                }
+                            }
+
+                            if ( !s_pfnImageList_Copy )
+                            {
+                                // this code is broken with ImageList_Copy()
+                                // but I don't care enough about Win95 support
+                                // to write it now -- if anybody does, please
+                                // do it
+                                wxFAIL_MSG("TODO: implement this for Win95");
+                                break;
+                            }
+
+                            const HIMAGELIST
+                                hImageList = GetHimagelistOf(m_imageListState);
+
+                            // add temporary image
+                            int width, height;
+                            m_imageListState->GetSize(0, width, height);
+
+                            HBITMAP hbmpTemp = ::CreateBitmap(width, height, 1, 1, NULL);
+                            int index = ::ImageList_Add(hImageList, hbmpTemp, hbmpTemp);
+                            ::DeleteObject(hbmpTemp);
+
+                            if ( index != -1 )
+                            {
+                                // move images to right
+                                for ( int i = index; i > 0; i-- )
+                                {
+                                    (*s_pfnImageList_Copy)(hImageList, i,
+                                                           hImageList, i-1,
+                                                           ILCF_MOVE);
+                                }
+
+                                // we must remove the image in POSTPAINT notify
+                                *result |= CDRF_NOTIFYPOSTPAINT;
+                            }
+                        }
+                        break;
+
+                    case CDDS_POSTPAINT:
+                        // we are deleting temp image of 0 index, which was
+                        // added before items were drawn (in PREPAINT notify)
+                        if (m_imageListState && m_imageListState->GetImageCount() > 0)
+                            m_imageListState->Remove(0);

                         break;
 
                     case CDDS_ITEMPREPAINT:
                         break;
 
                     case CDDS_ITEMPREPAINT:


@@ -2782,9 +3577,15 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 
                             wxTreeItemAttr * const attr = it->second;
 
 
                             wxTreeItemAttr * const attr = it->second;
 

+                            wxTreeViewItem tvItem((void *)nmcd.dwItemSpec,
+                                                  TVIF_STATE, TVIS_DROPHILITED);
+                            DoGetItem(&tvItem);
+                            const UINT tvItemState = tvItem.state;
+

                             // selection colours should override ours,
                             // selection colours should override ours,

-                            // otherwise it is too confusing ot the user
-                            if ( !(nmcd.uItemState & CDIS_SELECTED) )
+                            // otherwise it is too confusing to the user
+                            if ( !(nmcd.uItemState & CDIS_SELECTED) &&
+                                 !(tvItemState & TVIS_DROPHILITED) )

                             {
                                 wxColour colBack;
                                 if ( attr->HasBackgroundColour() )
                             {
                                 wxColour colBack;
                                 if ( attr->HasBackgroundColour() )


@@ -2798,8 +3599,9 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                             // colour when we don't have focus (we can't keep
                             // it when we do, it would usually be unreadable on
                             // the almost inverted bg colour...)
                             // colour when we don't have focus (we can't keep
                             // it when we do, it would usually be unreadable on
                             // the almost inverted bg colour...)

-                            if ( !(nmcd.uItemState & CDIS_SELECTED) ||
-                                    FindFocus() != this )
+                            if ( ( !(nmcd.uItemState & CDIS_SELECTED) ||
+                                    FindFocus() != this ) &&
+                                 !(tvItemState & TVIS_DROPHILITED) )

                             {
                                 wxColour colText;
                                 if ( attr->HasTextColour() )
                             {
                                 wxColour colText;
                                 if ( attr->HasTextColour() )


@@ -2840,13 +3642,15 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 point.x = LOWORD(pos);
                 point.y = HIWORD(pos);
                 ::MapWindowPoints(HWND_DESKTOP, GetHwnd(), &point, 1);
                 point.x = LOWORD(pos);
                 point.y = HIWORD(pos);
                 ::MapWindowPoints(HWND_DESKTOP, GetHwnd(), &point, 1);

-                int flags = 0;
-                wxTreeItemId item = HitTest(wxPoint(point.x, point.y), flags);
-                if (flags & wxTREE_HITTEST_ONITEMSTATEICON)
+                int htFlags = 0;
+                wxTreeItemId item = HitTest(wxPoint(point.x, point.y), htFlags);
+
+                if ( htFlags & wxTREE_HITTEST_ONITEMSTATEICON )

                 {
                     event.m_item = item;
                     eventType = wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK;
                 }
                 {
                     event.m_item = item;
                     eventType = wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK;
                 }

+

                 break;
             }
 
                 break;
             }
 


@@ -2854,11 +3658,11 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         case NM_RCLICK:
             {
                 TV_HITTESTINFO tvhti;
         case NM_RCLICK:
             {
                 TV_HITTESTINFO tvhti;

-                ::GetCursorPos(&tvhti.pt);
+                wxGetCursorPosMSW(&tvhti.pt);

                 ::ScreenToClient(GetHwnd(), &tvhti.pt);
                 if ( TreeView_HitTest(GetHwnd(), &tvhti) )
                 {
                 ::ScreenToClient(GetHwnd(), &tvhti.pt);
                 if ( TreeView_HitTest(GetHwnd(), &tvhti) )
                 {

-                    if ( tvhti.flags & TVHT_ONITEM )
+                    if ( MSWIsOnItem(tvhti.flags) )

                     {
                         event.m_item = tvhti.hItem;
                         eventType = (int)hdr->code == NM_DBLCLK
                     {
                         event.m_item = tvhti.hItem;
                         eventType = (int)hdr->code == NM_DBLCLK


@@ -2878,34 +3682,49 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             return wxControl::MSWOnNotify(idCtrl, lParam, result);
     }
 
             return wxControl::MSWOnNotify(idCtrl, lParam, result);
     }
 

-    event.SetEventObject(this);

     event.SetEventType(eventType);
 
     event.SetEventType(eventType);
 

-    bool processed = GetEventHandler()->ProcessEvent(event);
+    bool processed = HandleTreeEvent(event);

 
     // post processing
     switch ( hdr->code )
     {
         case NM_DBLCLK:
 
     // post processing
     switch ( hdr->code )
     {
         case NM_DBLCLK:

-            // we translate NM_DBLCLK into ACTIVATED event, so don't interpret
-            // the return code of this event handler as the return value for
-            // NM_DBLCLK - otherwise, double clicking the item to toggle its
-            // expanded status would never work
-            *result = false;
+            // we translate NM_DBLCLK into ACTIVATED event and if the user
+            // handled the activation of the item we shouldn't proceed with
+            // also using the same double click for toggling the item expanded
+            // state -- but OTOH do let the user to expand/collapse the item by
+            // double clicking on it if the activation is not handled specially
+            *result = processed;
+            break;
+
+        case NM_RCLICK:
+            // prevent tree control from sending WM_CONTEXTMENU to our parent
+            // (which it does if NM_RCLICK is not handled) because we want to
+            // send it to the control itself
+            *result =
+            processed = true;
+
+            ::SendMessage(GetHwnd(), WM_CONTEXTMENU,
+                          (WPARAM)GetHwnd(), ::GetMessagePos());

             break;
 
         case TVN_BEGINDRAG:
         case TVN_BEGINRDRAG:
             break;
 
         case TVN_BEGINDRAG:
         case TVN_BEGINRDRAG:

+#if wxUSE_DRAGIMAGE

             if ( event.IsAllowed() )
             {
                 // normally this is impossible because the m_dragImage is
                 // deleted once the drag operation is over
             if ( event.IsAllowed() )
             {
                 // normally this is impossible because the m_dragImage is
                 // deleted once the drag operation is over

-                wxASSERT_MSG( !m_dragImage, _T("starting to drag once again?") );
+                wxASSERT_MSG( !m_dragImage, wxT("starting to drag once again?") );

 
                 m_dragImage = new wxDragImage(*this, event.m_item);
 
                 m_dragImage = new wxDragImage(*this, event.m_item);

-                m_dragImage->BeginDrag(wxPoint(0, 0), this);
+                m_dragImage->BeginDrag(wxPoint(0,0), this);

                 m_dragImage->Show();
                 m_dragImage->Show();

+
+                m_dragStarted = true;

             }
             }

+#endif // wxUSE_DRAGIMAGE

             break;
 
         case TVN_DELETEITEM:
             break;
 
         case TVN_DELETEITEM:


@@ -2914,20 +3733,11 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 //     tables, but due to overhead of wxWin event system we
                 //     prefer to do it here ourself (otherwise deleting a tree
                 //     with many items is just too slow)
                 //     tables, but due to overhead of wxWin event system we
                 //     prefer to do it here ourself (otherwise deleting a tree
                 //     with many items is just too slow)

-                NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
+                NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;

 
 

-                wxTreeItemId item = event.m_item;
-                if ( HasIndirectData(item) )
-                {
-                    wxTreeItemIndirectData *data = (wxTreeItemIndirectData *)
-                                                        tv->itemOld.lParam;
-                    delete data; // can't be NULL here
-                }
-                else
-                {
-                    wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam;
-                    delete data; // may be NULL, ok
-                }
+                wxTreeItemParam *param =
+                        (wxTreeItemParam *)tv->itemOld.lParam;
+                delete param;

 
                 processed = true; // Make sure we don't get called twice
             }
 
                 processed = true; // Make sure we don't get called twice
             }


@@ -2936,19 +3746,20 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         case TVN_BEGINLABELEDIT:
             // return true to cancel label editing
             *result = !event.IsAllowed();
         case TVN_BEGINLABELEDIT:
             // return true to cancel label editing
             *result = !event.IsAllowed();

+

             // set ES_WANTRETURN ( like we do in BeginLabelEdit )
             // set ES_WANTRETURN ( like we do in BeginLabelEdit )

-            if(event.IsAllowed())
+            if ( event.IsAllowed() )

             {
                 HWND hText = TreeView_GetEditControl(GetHwnd());
             {
                 HWND hText = TreeView_GetEditControl(GetHwnd());

-                if(hText != NULL)
+                if ( hText )

                 {
                     // MBN: if m_textCtrl already has an HWND, it is a stale
                     // pointer from a previous edit (because the user
                     // didn't modify the label before dismissing the control,
                     // and TVN_ENDLABELEDIT was not sent), so delete it
                 {
                     // MBN: if m_textCtrl already has an HWND, it is a stale
                     // pointer from a previous edit (because the user
                     // didn't modify the label before dismissing the control,
                     // and TVN_ENDLABELEDIT was not sent), so delete it

-                    if(m_textCtrl && m_textCtrl->GetHWND() != 0)
+                    if ( m_textCtrl && m_textCtrl->GetHWND() )

                         DeleteTextCtrl();
                         DeleteTextCtrl();

-                    if(!m_textCtrl)
+                    if ( !m_textCtrl )

                         m_textCtrl = new wxTextCtrl();
                     m_textCtrl->SetParent(this);
                     m_textCtrl->SetHWND((WXHWND)hText);
                         m_textCtrl = new wxTextCtrl();
                     m_textCtrl->SetParent(this);
                     m_textCtrl->SetHWND((WXHWND)hText);


@@ -2962,6 +3773,10 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                                                | wxTE_PROCESS_ENTER);
                 }
             }
                                                | wxTE_PROCESS_ENTER);
                 }
             }

+            else // we had set m_idEdited before
+            {
+                m_idEdited.Unset();
+            }

             break;
 
         case TVN_ENDLABELEDIT:
             break;
 
         case TVN_ENDLABELEDIT:


@@ -2978,6 +3793,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             break;
 
 #ifndef __WXWINCE__
             break;
 
 #ifndef __WXWINCE__

+#ifdef TVN_GETINFOTIP

          case TVN_GETINFOTIP:
             {
                 // If the user permitted a tooltip change, change it
          case TVN_GETINFOTIP:
             {
                 // If the user permitted a tooltip change, change it


@@ -2987,6 +3803,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 }
             }
             break;
                 }
             }
             break;

+#endif

 #endif
 
         case TVN_SELCHANGING:
 #endif
 
         case TVN_SELCHANGING:


@@ -2996,17 +3813,40 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             break;
 
         case TVN_ITEMEXPANDED:
             break;
 
         case TVN_ITEMEXPANDED:

-            // the item is not refreshed properly after expansion when it has
-            // an image depending on the expanded/collapsed state - bug in
-            // comctl32.dll or our code?

             {
             {

-                NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
-                wxTreeItemId id(tv->itemNew.hItem);
+                NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
+                const wxTreeItemId id(tv->itemNew.hItem);

 
 

-                int image = GetItemImage(id, wxTreeItemIcon_Expanded);
-                if ( image != -1 )
+                if ( tv->action == TVE_COLLAPSE )
+                {
+                    if ( wxApp::GetComCtl32Version() >= 600 )
+                    {
+                        // for some reason the item selection rectangle depends
+                        // on whether it is expanded or collapsed (at least
+                        // with comctl32.dll v6): it is wider (by 3 pixels) in
+                        // the expanded state, so when the item collapses and
+                        // then is deselected the rightmost 3 pixels of the
+                        // previously drawn selection are left on the screen
+                        //
+                        // it's not clear if it's a bug in comctl32.dll or in
+                        // our code (because it does not happen in Explorer but
+                        // OTOH we don't do anything which could result in this
+                        // AFAICS) but we do need to work around it to avoid
+                        // ugly artifacts
+                        RefreshItem(id);
+                    }
+                }
+                else // expand

                 {
                 {

-                    RefreshItem(id);
+                    // the item is also not refreshed properly after expansion when
+                    // it has an image depending on the expanded/collapsed state:
+                    // again, it's not clear if the bug is in comctl32.dll or our
+                    // code...
+                    int image = GetItemImage(id, wxTreeItemIcon_Expanded);
+                    if ( image != -1 )
+                    {
+                        RefreshItem(id);
+                    }

                 }
             }
             break;
                 }
             }
             break;


@@ -3014,16 +3854,20 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         case TVN_GETDISPINFO:
             // NB: so far the user can't set the image himself anyhow, so do it
             //     anyway - but this may change later
         case TVN_GETDISPINFO:
             // NB: so far the user can't set the image himself anyhow, so do it
             //     anyway - but this may change later

-            //if ( /* !processed && */ 1 )
+            //if ( /* !processed && */ )

             {
                 wxTreeItemId item = event.m_item;
                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
             {
                 wxTreeItemId item = event.m_item;
                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;

+
+                const wxTreeItemParam * const param = GetItemParam(item);
+                if ( !param )
+                    break;
+

                 if ( info->item.mask & TVIF_IMAGE )
                 {
                     info->item.iImage =
                 if ( info->item.mask & TVIF_IMAGE )
                 {
                     info->item.iImage =

-                        DoGetItemImageFromData
+                        param->GetImage

                         (
                         (

-                         item,

                          IsExpanded(item) ? wxTreeItemIcon_Expanded
                                           : wxTreeItemIcon_Normal
                         );
                          IsExpanded(item) ? wxTreeItemIcon_Expanded
                                           : wxTreeItemIcon_Normal
                         );


@@ -3031,9 +3875,8 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 if ( info->item.mask & TVIF_SELECTEDIMAGE )
                 {
                     info->item.iSelectedImage =
                 if ( info->item.mask & TVIF_SELECTEDIMAGE )
                 {
                     info->item.iSelectedImage =

-                        DoGetItemImageFromData
+                        param->GetImage

                         (
                         (

-                         item,

                          IsExpanded(item) ? wxTreeItemIcon_SelectedExpanded
                                           : wxTreeItemIcon_Selected
                         );
                          IsExpanded(item) ? wxTreeItemIcon_SelectedExpanded
                                           : wxTreeItemIcon_Selected
                         );


@@ -3055,50 +3898,57 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 // why do they define INDEXTOSTATEIMAGEMASK but not the inverse?
 #define STATEIMAGEMASKTOINDEX(state) (((state) & TVIS_STATEIMAGEMASK) >> 12)
 
 // why do they define INDEXTOSTATEIMAGEMASK but not the inverse?
 #define STATEIMAGEMASKTOINDEX(state) (((state) & TVIS_STATEIMAGEMASK) >> 12)
 

-void wxTreeCtrl::SetState(const wxTreeItemId& node, int state)
+int wxTreeCtrl::DoGetItemState(const wxTreeItemId& item) const

 {
 {

-    TV_ITEM tvi;
-    tvi.hItem = (HTREEITEM)node.m_pItem;
-    tvi.mask = TVIF_STATE;
-    tvi.stateMask = TVIS_STATEIMAGEMASK;
-
-    // Select the specified state, or -1 == cycle to the next one.
-    if ( state == -1 )
-    {
-        TreeView_GetItem(GetHwnd(), &tvi);
-
-        state = STATEIMAGEMASKTOINDEX(tvi.state) + 1;
-        if ( state == m_imageListState->GetImageCount() )
-            state = 1;
-    }
-
-    wxCHECK_RET( state < m_imageListState->GetImageCount(),
-                 _T("wxTreeCtrl::SetState(): item index out of bounds") );
+    wxCHECK_MSG( item.IsOk(), wxTREE_ITEMSTATE_NONE, wxT("invalid tree item") );

 
 

-    tvi.state = INDEXTOSTATEIMAGEMASK(state);
+    // receive the desired information
+    wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
+    DoGetItem(&tvItem);

 
 

-    TreeView_SetItem(GetHwnd(), &tvi);
+    // state images are one-based
+    return STATEIMAGEMASKTOINDEX(tvItem.state) - 1;

 }
 
 }
 

-int wxTreeCtrl::GetState(const wxTreeItemId& node)
+void wxTreeCtrl::DoSetItemState(const wxTreeItemId& item, int state)

 {
 {

-    TV_ITEM tvi;
-    tvi.hItem = (HTREEITEM)node.m_pItem;
-    tvi.mask = TVIF_STATE;
-    tvi.stateMask = TVIS_STATEIMAGEMASK;
-    TreeView_GetItem(GetHwnd(), &tvi);
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
+
+    // state images are one-based
+    // 0 if no state image display (wxTREE_ITEMSTATE_NONE = -1)
+    tvItem.state = INDEXTOSTATEIMAGEMASK(state + 1);

 
 

-    return STATEIMAGEMASKTOINDEX(tvi.state);
+    DoSetItem(&tvItem);

 }
 
 }
 

-#if WXWIN_COMPATIBILITY_2_2
+// ----------------------------------------------------------------------------
+// Update locking.
+// ----------------------------------------------------------------------------
+
+// Using WM_SETREDRAW with the native control is a bad idea as it's broken in
+// some Windows versions (see http://support.microsoft.com/kb/130611) and
+// doesn't seem to do anything in other ones (e.g. under Windows 7 the tree
+// control keeps updating its scrollbars while the items are added to it,
+// resulting in horrible flicker when adding even a couple of dozen items).
+// So we hide it instead of freezing -- this still flickers, but actually not
+// as badly as it would if we didn't do it.

 
 

-wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
+void wxTreeCtrl::DoFreeze()

 {
 {

-    return GetItemParent( item );
+    // Notice that we don't call wxWindow::Hide() here as we want the window to
+    // remain shown from wxWidgets point of view and also because
+    // wxWindowMSW::Show() calls Do{Freeze,Thaw}() itself, so we'd get into
+    // infinite recursion this way.
+    if ( IsShown() )
+        ::ShowWindow(GetHwnd(), SW_HIDE);

 }
 
 }
 

-#endif  // WXWIN_COMPATIBILITY_2_2
+void wxTreeCtrl::DoThaw()
+{
+    if ( IsShown() )
+        ::ShowWindow(GetHwnd(), SW_SHOW);
+}

 
 #endif // wxUSE_TREECTRL
 
 #endif // wxUSE_TREECTRL

-