added (wxMSW-only) wxToolTip::SetMaxWidth() and improve its default behaviour (#2817)

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

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index e9bfaa8961a391625e4190383a00dbe4806bbc75..d358be2f328155f21f264b872c8c273e5c7f47da 100644 (file)
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -29,6 +29,8 @@
 #include "wx/treectrl.h"
 
 #ifndef WX_PRECOMP
 #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/dynarray.h"
     #include "wx/log.h"
     #include "wx/app.h"


@@ -37,11 +39,6 @@
 
 #include "wx/msw/private.h"
 
 
 #include "wx/msw/private.h"
 

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

 // Set this to 1 to be _absolutely_ sure that repainting will work for all
 // comctl32.dll versions
 #define wxUSE_COMCTL32_SAFELY 0
 // Set this to 1 to be _absolutely_ sure that repainting will work for all
 // comctl32.dll versions
 #define wxUSE_COMCTL32_SAFELY 0


@@ -55,29 +52,62 @@
 // get HTREEITEM from wxTreeItemId
 #define HITEM(item)     ((HTREEITEM)(((item).m_pItem)))
 
 // get HTREEITEM from wxTreeItemId
 #define HITEM(item)     ((HTREEITEM)(((item).m_pItem)))
 

-// 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

 
 

-// ----------------------------------------------------------------------------
-// private functions
-// ----------------------------------------------------------------------------
+// older SDKs are missing these
+#ifndef TVN_ITEMCHANGINGA

 
 

-// wrapper for TreeView_HitTest
-static HTREEITEM GetItemFromPoint(HWND hwndTV, int x, int y)
+#define TVN_ITEMCHANGINGA (TVN_FIRST-16)
+#define TVN_ITEMCHANGINGW (TVN_FIRST-17)
+
+typedef struct tagNMTVITEMCHANGE

 {
 {

-    TV_HITTESTINFO tvht;
-    tvht.pt.x = x;
-    tvht.pt.y = y;
+    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
+// behavior, 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) { ms_unlockedItem = item; }
+
+    // unlock all items, don't use unless absolutely necessary
+    TreeItemUnlocker() { ms_unlockedItem = (HTREEITEM)-1; }
+
+    // lock everything back
+    ~TreeItemUnlocker() { ms_unlockedItem = NULL; }

 
 

-    return (HTREEITEM)TreeView_HitTest(hwndTV, &tvht);
-}

 
 

-#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+    // 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 TreeItemUnlocker::ms_unlockedItem = NULL;
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------

 
 // 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)


@@ -88,6 +118,8 @@ static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
     tvi.stateMask = TVIS_SELECTED;
     tvi.hItem = hItem;
 
     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"));


@@ -104,6 +136,8 @@ 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"));


@@ -118,11 +152,6 @@ static inline void UnselectItem(HWND hwndTV, HTREEITEM htItem)
     SelectItem(hwndTV, htItem, false);
 }
 
     SelectItem(hwndTV, htItem, false);
 }
 

-static inline void ToggleItemSelection(HWND hwndTV, HTREEITEM htItem)
-{
-    SelectItem(hwndTV, htItem, !IsItemSelected(hwndTV, htItem));
-}
-

 // helper function which selects all items in a range and, optionally,
 // unselects all others
 static void SelectRange(HWND hwndTV,
 // helper function which selects all items in a range and, optionally,
 // unselects all others
 static void SelectRange(HWND hwndTV,


@@ -191,60 +220,57 @@ static void SelectRange(HWND hwndTV,
 // 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


@@ -293,9 +319,9 @@ class wxTreeItemParam
 {
 public:
     wxTreeItemParam()
 {
 public:
     wxTreeItemParam()

-        : m_item((void*)NULL),
-          m_data(NULL)

     {
     {

+        m_data = NULL;
+

         for ( size_t n = 0; n < WXSIZEOF(m_images); n++ )
         {
             m_images[n] = -1;
         for ( size_t n = 0; n < WXSIZEOF(m_images); n++ )
         {
             m_images[n] = -1;


@@ -451,17 +477,15 @@ public:
 
     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);
         }


@@ -553,7 +577,9 @@ wxBEGIN_FLAGS( wxTreeCtrlStyle )
     wxFLAGS_MEMBER(wxTR_HAS_VARIABLE_ROW_HEIGHT)
     wxFLAGS_MEMBER(wxTR_SINGLE)
     wxFLAGS_MEMBER(wxTR_MULTIPLE)
     wxFLAGS_MEMBER(wxTR_HAS_VARIABLE_ROW_HEIGHT)
     wxFLAGS_MEMBER(wxTR_SINGLE)
     wxFLAGS_MEMBER(wxTR_MULTIPLE)

+#if WXWIN_COMPATIBILITY_2_8

     wxFLAGS_MEMBER(wxTR_EXTENDED)
     wxFLAGS_MEMBER(wxTR_EXTENDED)

+#endif

     wxFLAGS_MEMBER(wxTR_DEFAULT_STYLE)
 
 wxEND_FLAGS( wxTreeCtrlStyle )
     wxFLAGS_MEMBER(wxTR_DEFAULT_STYLE)
 
 wxEND_FLAGS( wxTreeCtrlStyle )


@@ -649,7 +675,9 @@ void wxTreeCtrl::Init()
 {
     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;
 
     // initialize the global array of events now as it can't be done statically
     m_pVirtualRoot = NULL;
 
     // initialize the global array of events now as it can't be done statically


@@ -676,7 +704,7 @@ 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;
 


@@ -697,20 +725,6 @@ bool wxTreeCtrl::Create(wxWindow *parent,
             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
-

 #if !defined(__WXWINCE__) && defined(TVS_INFOTIP)
     // Need so that TVN_GETINFOTIP messages will be sent
     wstyle |= TVS_INFOTIP;
 #if !defined(__WXWINCE__) && defined(TVS_INFOTIP)
     // Need so that TVN_GETINFOTIP messages will be sent
     wstyle |= TVS_INFOTIP;


@@ -737,58 +751,6 @@ bool wxTreeCtrl::Create(wxWindow *parent,
     SetForegroundColour(wxWindow::GetParent()->GetForegroundColour());
 #endif
 
     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);
-
-        if ( !::DrawFrameControl(hdcMem, &rect,
-                                 DFC_BUTTON,
-                                 DFCS_BUTTONCHECK) )
-        {
-            wxLogLastError(wxT("DrawFrameControl(uncheck)"));
-        }
-
-        bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
-        imagelistCheckboxes.Add(bmp);
-
-        // clean up
-        ::DeleteDC(hdcMem);
-
-        // set the imagelist
-        SetStateImageList(&imagelistCheckboxes);
-    }
-#endif // 0
-

     wxSetCCUnicodeFormat(GetHwnd());
 
     return true;
     wxSetCCUnicodeFormat(GetHwnd());
 
     return true;


@@ -847,6 +809,8 @@ bool wxTreeCtrl::DoGetItem(wxTreeViewItem *tvItem) const
 
 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"));


@@ -933,6 +897,11 @@ 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") );


@@ -959,7 +928,7 @@ 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 = (wxChar *)text.wx_str();  // conversion is ok

     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


@@ -972,7 +941,7 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
     {
         if ( item == m_idEdited )
         {
     {
         if ( item == m_idEdited )
         {

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

         }
     }
 }
         }
     }
 }


@@ -982,7 +951,7 @@ int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
 {
     wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
 
 {
     wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
 

-    if ( (HITEM(item) == TVI_ROOT) && (m_windowStyle & wxTR_HIDE_ROOT) )
+    if ( IsHiddenRoot(item) )

     {
         // no images for hidden root item
         return -1;
     {
         // no images for hidden root item
         return -1;


@@ -1002,7 +971,7 @@ void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
                  wxT("invalid image index"));
 
 
                  wxT("invalid image index"));
 
 

-    if ( (HITEM(item) == TVI_ROOT) && (m_windowStyle & wxTR_HIDE_ROOT) )
+    if ( IsHiddenRoot(item) )

     {
         // no images for hidden root item
         return;
     {
         // no images for hidden root item
         return;


@@ -1198,6 +1167,10 @@ 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);
 }
 


@@ -1240,6 +1213,12 @@ bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 {
     wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
 
 {
     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);
 


@@ -1348,36 +1327,6 @@ 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") );


@@ -1418,7 +1367,15 @@ 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


@@ -1426,40 +1383,21 @@ 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);


@@ -1496,7 +1434,7 @@ wxTreeItemId wxTreeCtrl::DoInsertAfter(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 = (wxChar *)text.wx_str();  // cast is ok

     }
     else
     {
     }
     else
     {


@@ -1520,12 +1458,27 @@ wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent,
     tvIns.item.lParam = (LPARAM)param;
     tvIns.item.mask = mask;
 
     tvIns.item.lParam = (LPARAM)param;
     tvIns.item.mask = mask;
 

+    // 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"));
     }
 
     HTREEITEM id = TreeView_InsertItem(GetHwnd(), &tvIns);
     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 )
+    {
+        RECT rect;
+        TreeView_GetItemRect(GetHwnd(), HITEM(parent), &rect, FALSE);
+        ::InvalidateRect(GetHwnd(), &rect, FALSE);
+    }
+

     // associate the application tree item with Win32 tree item handle
     param->SetItem(id);
 
     // associate the application tree item with Win32 tree item handle
     param->SetItem(id);
 


@@ -1539,33 +1492,14 @@ wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent,
     return wxTreeItemId(id);
 }
 
     return wxTreeItemId(id);
 }
 

-// for compatibility only
-#if WXWIN_COMPATIBILITY_2_4
-
-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, _T("tree can have only a single root") );
+

         // create a virtual root item, the parent for all the others
         wxTreeItemParam *param = new wxTreeItemParam;
         param->SetData(data);
         // create a virtual root item, the parent for all the others
         wxTreeItemParam *param = new wxTreeItemParam;
         param->SetData(data);


@@ -1613,6 +1547,10 @@ wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
 
 void wxTreeCtrl::Delete(const wxTreeItemId& item)
 {
 
 void wxTreeCtrl::Delete(const wxTreeItemId& item)
 {

+    // unlock tree selections on vista, without this the
+    // tree ctrl will eventually crash after item deletion
+    TreeItemUnlocker unlock_all;
+

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


@@ -1622,6 +1560,9 @@ void wxTreeCtrl::Delete(const wxTreeItemId& item)
 // 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;


@@ -1645,6 +1586,9 @@ void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
 
 void wxTreeCtrl::DeleteAllItems()
 {
 
 void wxTreeCtrl::DeleteAllItems()
 {

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

     // delete the "virtual" root item.
     if ( GET_VIRTUAL_ROOT() )
     {
     // delete the "virtual" root item.
     if ( GET_VIRTUAL_ROOT() )
     {


@@ -1669,7 +1613,7 @@ 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),
+    wxCHECK_RET( !IsHiddenRoot(item),

                  wxT("Can't expand/collapse hidden root node!") );
 
     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
                  wxT("Can't expand/collapse hidden root node!") );
 
     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must


@@ -1692,7 +1636,7 @@ void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
                                                            : IDX_COLLAPSE]
                                          [IDX_DONE],
                            this, item);
                                                            : IDX_COLLAPSE]
                                          [IDX_DONE],
                            this, item);

-        (void)GetEventHandler()->ProcessEvent(event);
+        (void)HandleWindowEvent(event);

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


@@ -1717,15 +1661,6 @@ 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)
-{
-    DoExpand(item, action);
-}
-
-#endif
-

 void wxTreeCtrl::Unselect()
 {
     wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE),
 void wxTreeCtrl::Unselect()
 {
     wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE),


@@ -1743,11 +1678,7 @@ void wxTreeCtrl::UnselectAll()
         size_t count = GetSelections(selections);
         for ( size_t n = 0; n < count; n++ )
         {
         size_t count = GetSelections(selections);
         for ( size_t n = 0; n < count; n++ )
         {

-#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
-            SetItemCheck(HITEM(selections[n]), false);
-#else // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE

             ::UnselectItem(GetHwnd(), HITEM(selections[n]));
             ::UnselectItem(GetHwnd(), HITEM(selections[n]));

-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE/!wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE

         }
 
         m_htSelStart.Unset();
         }
 
         m_htSelStart.Unset();


@@ -1761,43 +1692,42 @@ void wxTreeCtrl::UnselectAll()
 
 void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select)
 {
 
 void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select)
 {

-    if ( m_windowStyle & wxTR_MULTIPLE )
-    {
-#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
-    }
-    else
-    {
-        wxASSERT_MSG( select,
-                      _T("SelectItem(false) works only for multiselect") );
+    wxCHECK_RET( !IsHiddenRoot(item), _T("can't select hidden root 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
+    wxASSERT_MSG( select || HasFlag(wxTR_MULTIPLE),
+                  _T("SelectItem(false) works only for multiselect") );

 
 

-        wxTreeEvent event(wxEVT_COMMAND_TREE_SEL_CHANGING, this, item);
-        if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
+    wxTreeEvent event(wxEVT_COMMAND_TREE_SEL_CHANGING, this, item);
+    if ( !HandleWindowEvent(event) || event.IsAllowed() )
+    {
+        if ( HasFlag(wxTR_MULTIPLE) )

         {
         {

-            if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) )
+            if ( !::SelectItem(GetHwnd(), HITEM(item), select) )

             {
                 wxLogLastError(wxT("TreeView_SelectItem"));
             {
                 wxLogLastError(wxT("TreeView_SelectItem"));

+                return;

             }
             }

-            else // ok
+        }
+        else // single selection
+        {
+            // use TreeView_SelectItem() to deselect the previous selection
+            if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) )

             {
             {

-                event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
-                (void)GetEventHandler()->ProcessEvent(event);
+                wxLogLastError(wxT("TreeView_SelectItem"));
+                return;

             }
         }
             }
         }

-        //else: program vetoed the change
+
+        event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
+        (void)HandleWindowEvent(event);

     }
     }

+    //else: program vetoed the change

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

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

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


@@ -1989,7 +1919,9 @@ bool wxTreeCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
 {
     if ( msg->message == WM_KEYDOWN )
     {
 {
     if ( msg->message == WM_KEYDOWN )
     {

-        if ( msg->wParam == VK_RETURN )
+        // 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;
         {
             // we need VK_RETURN to generate wxEVT_COMMAND_TREE_ITEM_ACTIVATED
             return false;


@@ -1999,8 +1931,10 @@ bool wxTreeCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
     return wxTreeCtrlBase::MSWShouldPreProcessMessage(msg);
 }
 
     return wxTreeCtrlBase::MSWShouldPreProcessMessage(msg);
 }
 

-bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
+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);


@@ -2038,32 +1972,47 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
     {
         int x = GET_X_LPARAM(lParam),
             y = GET_Y_LPARAM(lParam);
     {
         int x = GET_X_LPARAM(lParam),
             y = GET_Y_LPARAM(lParam);

-        // Convert the screen point to a client point
-        wxPoint MenuPoint = ScreenToClient(wxPoint(x, y));
-
-        // can't use GetSelection() here as it would assert in multiselect mode
-        wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_MENU, this,
-                          wxTreeItemId(TreeView_GetSelection(GetHwnd())));
-
-        // Get the bounding rectangle for the item, including the non-text areas
-        wxRect ItemRect;
-        GetBoundingRect(event.m_item, ItemRect, false);
-        // If the point is inside the bounding rectangle, use it as the click position.
-        // This should be the case for WM_CONTEXTMENU as the result of a right-click
-        if (ItemRect.Inside(MenuPoint))
+
+        // 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 )

         {
         {

-            event.m_pointDrag = MenuPoint;
+            // 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);
+            }

         }
         }

-        // Use the Explorer standard of putting the menu at the left edge of the text,
-        // in the vertical middle of the text. Should be the case for the "menu" key
-        else
+        else // event from mouse, use mouse position

         {
         {

-            // Use the bounding rectangle of only the text part
-            GetBoundingRect(event.m_item, ItemRect, true);
-            event.m_pointDrag = wxPoint(ItemRect.GetX(), ItemRect.GetY() + ItemRect.GetHeight() / 2);
+            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);

         }
 
         }
 

-        if ( GetEventHandler()->ProcessEvent(event) )
+        // create the event
+        wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_MENU, this, item);
+
+        event.m_pointDrag = pt;
+
+        if ( HandleWindowEvent(event) )

             processed = true;
         //else: continue with generating wxEVT_CONTEXT_MENU in base class code
     }
             processed = true;
         //else: continue with generating wxEVT_CONTEXT_MENU in base class code
     }


@@ -2073,32 +2022,15 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
         // same meaning for all of them
         int x = GET_X_LPARAM(lParam),
             y = GET_Y_LPARAM(lParam);
         // same meaning for all of them
         int x = GET_X_LPARAM(lParam),
             y = GET_Y_LPARAM(lParam);

-        HTREEITEM htItem = GetItemFromPoint(GetHwnd(), x, y);

 
         TV_HITTESTINFO tvht;
         tvht.pt.x = x;
         tvht.pt.y = y;
 
 
         TV_HITTESTINFO tvht;
         tvht.pt.x = x;
         tvht.pt.y = y;
 

-        (void) TreeView_HitTest(GetHwnd(), &tvht);
+        HTREEITEM htItem = TreeView_HitTest(GetHwnd(), &tvht);

 
         switch ( nMsg )
         {
 
         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();
-                }
-
-                // select item and set the focus to the
-                // newly selected item
-                ::SelectItem(GetHwnd(), htItem);
-                ::SetFocus(GetHwnd(), htItem);
-                break;
-
-#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE

             case WM_LBUTTONDOWN:
                 if ( htItem && isMultiple && (tvht.flags & TVHT_ONITEM) != 0 )
                 {
             case WM_LBUTTONDOWN:
                 if ( htItem && isMultiple && (tvht.flags & TVHT_ONITEM) != 0 )
                 {


@@ -2110,7 +2042,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                         SetFocus();
 
                         // toggle selected state
                         SetFocus();
 
                         // toggle selected state

-                        ::ToggleItemSelection(GetHwnd(), htItem);
+                        ToggleItemSelection(htItem);

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


@@ -2173,13 +2105,52 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                             ::SetFocus(GetHwnd(), htItem);
                             processed = true;
                         }
                             ::SetFocus(GetHwnd(), htItem);
                             processed = 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();
+                        }

 
                         // reset on any click without Shift
                         m_htSelStart.Unset();
                     }
                 }
                 break;
 
                         // reset on any click without Shift
                         m_htSelStart.Unset();
                     }
                 }
                 break;

-#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+
+            case WM_RBUTTONDOWN:
+                // 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 for tree with
+                // multiple selections
+                if ( isMultiple )
+                {
+                    if ( !IsItemSelected(GetHwnd(), htItem) )
+                    {
+                        UnselectAll();
+                        SelectItem(htItem);
+                        ::SetFocus(GetHwnd(), htItem);
+                    }
+
+                    // fire EVT_RIGHT_DOWN
+                    HandleMouseEvent(nMsg, x, y, wParam);
+
+                    // 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);
+
+                    // prevent tree control default processing, as we've
+                    // already done everything
+                    processed = true;
+                }
+                break;

 
             case WM_MOUSEMOVE:
 #ifndef __WXWINCE__
 
             case WM_MOUSEMOVE:
 #ifndef __WXWINCE__


@@ -2188,39 +2159,49 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                     int cx = abs(m_ptClick.x - x);
                     int cy = abs(m_ptClick.y - y);
 
                     int cx = abs(m_ptClick.x - x);
                     int cy = abs(m_ptClick.y - y);
 

-                    if ( cx > GetSystemMetrics( SM_CXDRAG ) || cy > GetSystemMetrics( SM_CYDRAG ) )
+                    if ( cx > ::GetSystemMetrics(SM_CXDRAG) ||
+                            cy > ::GetSystemMetrics(SM_CYDRAG) )

                     {
                     {

-                        HWND pWnd = ::GetParent( GetHwnd() );
-                        if ( pWnd )
-                        {
-                            NM_TREEVIEW tv;
+                        NM_TREEVIEW tv;
+                        wxZeroMemory(tv);

 
 

-                            tv.hdr.hwndFrom = GetHwnd();
-                            tv.hdr.idFrom = ::GetWindowLong( GetHwnd(), GWL_ID );
-                            tv.hdr.code = TVN_BEGINDRAG;
+                        tv.hdr.hwndFrom = GetHwnd();
+                        tv.hdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID);
+                        tv.hdr.code = TVN_BEGINDRAG;

 
 

-                            tv.itemNew.hItem = HITEM(m_htClickedItem);
+                        tv.itemNew.hItem = HITEM(m_htClickedItem);

 
 

-                            TVITEM tviAux;
-                            ZeroMemory(&tviAux, sizeof(tviAux));
-                            tviAux.hItem = HITEM(m_htClickedItem);
-                            tviAux.mask = TVIF_STATE | TVIF_PARAM;
-                            tviAux.stateMask = 0xffffffff;
-                            TreeView_GetItem( GetHwnd(), &tviAux );

 
 

-                            tv.itemNew.state = tviAux.state;
-                            tv.itemNew.lParam = tviAux.lParam;
+                        TVITEM tviAux;
+                        wxZeroMemory(tviAux);

 
 

-                            tv.ptDrag.x = x;
-                            tv.ptDrag.y = y;
+                        tviAux.hItem = HITEM(m_htClickedItem);
+                        tviAux.mask = TVIF_STATE | TVIF_PARAM;
+                        tviAux.stateMask = 0xffffffff;
+                        TreeView_GetItem(GetHwnd(), &tviAux);

 
 

-                            ::SendMessage( pWnd, WM_NOTIFY, tv.hdr.idFrom, (LPARAM)&tv );
-                        }
+                        tv.itemNew.state = tviAux.state;
+                        tv.itemNew.lParam = tviAux.lParam;
+
+                        tv.ptDrag.x = x;
+                        tv.ptDrag.y = y;
+
+                        // do it before SendMessage() call below to avoid
+                        // reentrancies here if there is another WM_MOUSEMOVE
+                        // in the queue already

                         m_htClickedItem.Unset();
                         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;

                     }
                 }
 #endif // __WXWINCE__
 
                     }
                 }
 #endif // __WXWINCE__
 

+#if wxUSE_DRAGIMAGE

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


@@ -2233,6 +2214,7 @@ 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:


@@ -2258,6 +2240,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                 // 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();


@@ -2266,16 +2249,18 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
 
                     // generate the drag end event
                     wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, this, htItem);
 
                     // generate the drag end event
                     wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, this, htItem);

-                    (void)GetEventHandler()->ProcessEvent(event);
+                    event.m_pointDrag = wxPoint(x, y);
+
+                    (void)HandleWindowEvent(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

                 break;
         }
     }
                 break;
         }
     }

-#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE

     else if ( (nMsg == WM_SETFOCUS || nMsg == WM_KILLFOCUS) && isMultiple )
     {
         // the tree control greys out the selected item when it loses focus and
     else if ( (nMsg == WM_SETFOCUS || nMsg == WM_KILLFOCUS) && isMultiple )
     {
         // the tree control greys out the selected item when it loses focus and


@@ -2306,7 +2291,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
             case VK_SPACE:
                 if ( bCtrl )
                 {
             case VK_SPACE:
                 if ( bCtrl )
                 {

-                    ::ToggleItemSelection(GetHwnd(), htSel);
+                    ToggleItemSelection(htSel);

                 }
                 else
                 {
                 }
                 else
                 {


@@ -2375,7 +2360,6 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                 }
         }
     }
                 }
         }
     }

-#endif // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE

     else if ( nMsg == WM_COMMAND )
     {
         // if we receive a EN_KILLFOCUS command from the in-place edit control
     else if ( nMsg == WM_COMMAND )
     {
         // if we receive a EN_KILLFOCUS command from the in-place edit control


@@ -2404,32 +2388,9 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
 WXLRESULT
 wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {
 WXLRESULT
 wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {

-    // default WM_RBUTTONDOWN handler enters modal loop inside DefWindowProc()
-    // waiting for WM_RBUTTONUP and then sends the resulting WM_CONTEXTMENU to
-    // the parent window, not us, which completely breaks everything so simply
-    // don't let it see this message at all
-    if ( nMsg == WM_RBUTTONDOWN )
-        return 0;
-
-    // but because of the above we don't get NM_RCLICK which is normally
-    // generated by tree window proc when the modal loop mentioned above ends
-    // because the mouse is released -- synthesize it ourselves instead
-    if ( nMsg == WM_RBUTTONUP )
-    {
-        NMHDR hdr;
-        hdr.hwndFrom = GetHwnd();
-        hdr.idFrom = GetId();
-        hdr.code = NM_RCLICK;
-
-        WXLPARAM rc;
-        MSWOnNotify(GetId(), (LPARAM)&hdr, &rc);
-
-        // continue as usual
-    }
-

     if ( nMsg == WM_CHAR )
     {
     if ( nMsg == WM_CHAR )
     {

-        // also don't let the control process Space and Return keys because it
+        // 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
         // 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


@@ -2437,6 +2398,24 @@ wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
         if ( wParam == VK_SPACE || wParam == VK_RETURN )
             return 0;
     }
         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();
+                delete m_dragImage;
+                m_dragImage = NULL;
+
+                // 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);
 }
 
     return wxControl::MSWDefWindowProc(nMsg, wParam, lParam);
 }


@@ -2540,8 +2519,8 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 
                 break;
             }
 
                 break;
             }

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

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


@@ -2597,8 +2576,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 // fabricate the lParam and wParam parameters sufficiently
                 // similar to the ones from a "real" WM_KEYDOWN so that
                 // CreateKeyEvent() works correctly
                 // fabricate the lParam and wParam parameters sufficiently
                 // similar to the ones from a "real" WM_KEYDOWN so that
                 // CreateKeyEvent() works correctly

-                const bool isAltDown = ::GetKeyState(VK_MENU) < 0;
-                WXLPARAM lParam = (isAltDown ? KF_ALTDOWN : 0) << 16;
+                WXLPARAM lParam = (wxIsAltDown() ? KF_ALTDOWN : 0) << 16;

 
                 WXWPARAM wParam = info->wVKey;
 
 
                 WXWPARAM wParam = info->wVKey;
 


@@ -2616,7 +2594,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                                                 wParam);
 
                 // a separate event for Space/Return
                                                 wParam);
 
                 // a separate event for Space/Return

-                if ( !wxIsCtrlDown() && !wxIsShiftDown() && !isAltDown &&
+                if ( !wxIsAnyModifierDown() &&

                      ((info->wVKey == VK_SPACE) || (info->wVKey == VK_RETURN)) )
                 {
                    wxTreeItemId item;
                      ((info->wVKey == VK_SPACE) || (info->wVKey == VK_RETURN)) )
                 {
                    wxTreeItemId item;


@@ -2625,11 +2603,42 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 
                    wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED,
                                         this, item);
 
                    wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED,
                                         this, item);

-                   (void)GetEventHandler()->ProcessEvent(event2);
+                   (void)HandleWindowEvent(event2);

                 }
             }
             break;
 
                 }
             }
             break;
 

+
+        // Vista's tree control has introduced some problems with our
+        // multi-selection tree.  When TreeView_SelectItem() is called,
+        // the wrong items are deselected.
+
+        // Fortunately, Vista provides a new notification, TVN_ITEMCHANGING
+        // that can be used to regulate this incorrect behavior.  The
+        // following messages will allow only the unlocked item's selection
+        // state to change
+
+        case TVN_ITEMCHANGINGA:
+        case TVN_ITEMCHANGINGW:
+            {
+                // we only need to handles these in multi-select trees
+                if ( HasFlag(wxTR_MULTIPLE) )
+                {
+                    // get info about the item about to be changed
+                    NMTVITEMCHANGE* info = (NMTVITEMCHANGE*)lParam;
+                    if (TreeItemUnlocker::IsLocked(info->hItem))
+                    {
+                        // item's state is locked, don't allow the change
+                        // returning 1 will disallow the change
+                        *result = 1;
+                        return true;
+                    }
+                }
+
+                // allow the state change
+            }
+            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:
         // NB: MSLU is broken and sends TVN_SELCHANGEDA instead of
         //     TVN_SELCHANGEDW in Unicode mode under Win98. Therefore
         //     we have to handle both messages:


@@ -2659,6 +2668,19 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                     event.m_itemOld = tv->itemOld.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
+            SetFocus();

             break;
 
             // instead of explicitly checking for _WIN32_IE, check if the
             break;
 
             // instead of explicitly checking for _WIN32_IE, check if the


@@ -2675,6 +2697,43 @@ 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)
+                        {
+                            #define hImageList (HIMAGELIST)m_imageListState->GetHIMAGELIST()
+
+                            // 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-- )
+                                    ::ImageList_Copy(hImageList, i, hImageList, i-1, 0);
+
+                                // we must remove the image in POSTPAINT notify
+                                *result |= CDRF_NOTIFYPOSTPAINT;
+                            }
+
+                            #undef hImageList
+                        }
+                        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:


@@ -2799,21 +2858,34 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
     if ( event.m_item.IsOk() )
         event.SetClientObject(GetItemData(event.m_item));
 
     if ( event.m_item.IsOk() )
         event.SetClientObject(GetItemData(event.m_item));
 

-    bool processed = GetEventHandler()->ProcessEvent(event);
+    bool processed = HandleWindowEvent(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
             if ( event.IsAllowed() )
             {
                 // normally this is impossible because the m_dragImage is


@@ -2824,6 +2896,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 m_dragImage->BeginDrag(wxPoint(0,0), this);
                 m_dragImage->Show();
             }
                 m_dragImage->BeginDrag(wxPoint(0,0), this);
                 m_dragImage->Show();
             }

+#endif // wxUSE_DRAGIMAGE

             break;
 
         case TVN_DELETEITEM:
             break;
 
         case TVN_DELETEITEM:


@@ -2912,17 +2985,40 @@ 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;
             {
                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;

-                wxTreeItemId id(tv->itemNew.hItem);
+                const wxTreeItemId id(tv->itemNew.hItem);

 
 

-                int image = GetItemImage(id, wxTreeItemIcon_Expanded);
-                if ( image != -1 )
+                if ( tv->action == TVE_COLLAPSE )

                 {
                 {

-                    RefreshItem(id);
+                    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
+                {
+                    // 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;


@@ -2974,40 +3070,29 @@ 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;
+    wxCHECK_MSG( item.IsOk(), wxTREE_ITEMSTATE_NONE, wxT("invalid tree item") );

 
 

-    // 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") );
-
-    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);

 }
 
 #endif // wxUSE_TREECTRL
 }
 
 #endif // wxUSE_TREECTRL