X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3e9af289ed81a98bbbf9bb183d0ed03ac627ba32..8f7fa6f8f9bc857cf809dcb6bf7c49227ef2ccf3:/src/msw/treectrl.cpp

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index d99f419e09..2a5aed5905 100644
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -485,7 +485,7 @@ wxBEGIN_FLAGS( wxTreeCtrlStyle )
     wxFLAGS_MEMBER(wxBORDER_RAISED)
     wxFLAGS_MEMBER(wxBORDER_STATIC)
     wxFLAGS_MEMBER(wxBORDER_NONE)
-    
+
     // old style border flags
     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
@@ -524,15 +524,15 @@ 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_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 , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
+    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 ) 
+wxCONSTRUCTOR_5( wxTreeCtrl , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
 #else
 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl)
 #endif
@@ -681,9 +681,9 @@ bool wxTreeCtrl::Create(wxWindow *parent,
     // Need so that TVN_GETINFOTIP messages will be sent
     wstyle |= TVS_INFOTIP;
 #endif
-    
+
     // Create the tree control.
-    if ( !MSWCreateControl(WC_TREEVIEW, wstyle) )
+    if ( !MSWCreateControl(WC_TREEVIEW, wstyle, pos, size) )
         return false;
 
 #if wxUSE_COMCTL32_SAFELY
@@ -755,7 +755,7 @@ bool wxTreeCtrl::Create(wxWindow *parent,
     }
 #endif // 0
 
-    SetSize(pos.x, pos.y, size.x, size.y);
+    wxSetCCUnicodeFormat(GetHwnd());
 
     return true;
 }
@@ -785,6 +785,18 @@ wxTreeCtrl::~wxTreeCtrl()
 // accessors
 // ----------------------------------------------------------------------------
 
+/* static */ wxVisualAttributes
+wxTreeCtrl::GetClassDefaultAttributes(wxWindowVariant variant)
+{
+    wxVisualAttributes attrs = GetCompositeControlsDefaultAttributes(variant);
+
+    // common controls have their own default font
+    attrs.font = wxGetCCDefaultFont();
+
+    return attrs;
+}
+
+
 // simple wrappers which add error checking in debug mode
 
 bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
@@ -874,8 +886,9 @@ void wxTreeCtrl::AssignStateImageList(wxImageList *imageList)
 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
                                     bool recursively) const
 {
-    TraverseCounter counter(this, item, recursively);
+    wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") );
 
+    TraverseCounter counter(this, item, recursively);
     return counter.GetCount() - 1;
 }
 
@@ -889,7 +902,7 @@ bool wxTreeCtrl::SetBackgroundColour(const wxColour &colour)
     if ( !wxWindowBase::SetBackgroundColour(colour) )
         return false;
 
-    SendMessage(GetHwnd(), TVM_SETBKCOLOR, 0, colour.GetPixel());
+    ::SendMessage(GetHwnd(), TVM_SETBKCOLOR, 0, colour.GetPixel());
 #endif
 
     return true;
@@ -901,7 +914,7 @@ bool wxTreeCtrl::SetForegroundColour(const wxColour &colour)
     if ( !wxWindowBase::SetForegroundColour(colour) )
         return false;
 
-    SendMessage(GetHwnd(), TVM_SETTEXTCOLOR, 0, colour.GetPixel());
+    ::SendMessage(GetHwnd(), TVM_SETTEXTCOLOR, 0, colour.GetPixel());
 #endif
 
     return true;
@@ -913,6 +926,8 @@ bool wxTreeCtrl::SetForegroundColour(const wxColour &colour)
 
 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), wxT(""), wxT("invalid tree item") );
+
     wxChar buf[512];  // the size is arbitrary...
 
     wxTreeViewItem tvItem(item, TVIF_TEXT);
@@ -929,6 +944,8 @@ wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 
 void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     if ( IS_VIRTUAL_ROOT(item) )
         return;
 
@@ -944,7 +961,7 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
     HWND hwndEdit = TreeView_GetEditControl(GetHwnd());
     if ( hwndEdit )
     {
-        if ( item == GetSelection() )
+        if ( item == m_idEdited )
         {
             ::SetWindowText(hwndEdit, text);
         }
@@ -1004,6 +1021,8 @@ void wxTreeCtrl::DoSetItemImages(const wxTreeItemId& item,
 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?
@@ -1043,6 +1062,8 @@ int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
 void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
                               wxTreeItemIcon which)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     if ( IS_VIRTUAL_ROOT(item) )
     {
         // TODO: Maybe a hidden root can still store images?
@@ -1115,6 +1136,8 @@ void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
 
 wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
+
     wxTreeViewItem tvItem(item, TVIF_PARAM);
 
     // Hidden root may have data.
@@ -1140,6 +1163,8 @@ wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 
 void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     if ( IS_VIRTUAL_ROOT(item) )
     {
         GET_VIRTUAL_ROOT()->SetData(data);
@@ -1199,6 +1224,8 @@ bool wxTreeCtrl::HasIndirectData(const wxTreeItemId& item) const
 
 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     if ( IS_VIRTUAL_ROOT(item) )
         return;
 
@@ -1209,6 +1236,8 @@ void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 
 void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     if ( IS_VIRTUAL_ROOT(item) )
         return;
 
@@ -1241,28 +1270,33 @@ void wxTreeCtrl::RefreshItem(const wxTreeItemId& item)
 
 wxColour wxTreeCtrl::GetItemTextColour(const wxTreeItemId& item) const
 {
-    wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem);
+    wxCHECK_MSG( item.IsOk(), wxNullColour, wxT("invalid tree item") );
 
+    wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem);
     return it == m_attrs.end() ? wxNullColour : it->second->GetTextColour();
 }
 
 wxColour wxTreeCtrl::GetItemBackgroundColour(const wxTreeItemId& item) const
 {
-    wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem);
+    wxCHECK_MSG( item.IsOk(), wxNullColour, wxT("invalid tree item") );
 
+    wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem);
     return it == m_attrs.end() ? wxNullColour : it->second->GetBackgroundColour();
 }
 
 wxFont wxTreeCtrl::GetItemFont(const wxTreeItemId& item) const
 {
-    wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem);
+    wxCHECK_MSG( item.IsOk(), wxNullFont, wxT("invalid tree item") );
 
+    wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem);
     return it == m_attrs.end() ? wxNullFont : it->second->GetFont();
 }
 
 void wxTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
                                    const wxColour& col)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     wxTreeItemAttr *attr;
     wxMapTreeAttr::iterator it = m_attrs.find(item.m_pItem);
     if ( it == m_attrs.end() )
@@ -1285,6 +1319,8 @@ void wxTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
 void wxTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
                                          const wxColour& col)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     wxTreeItemAttr *attr;
     wxMapTreeAttr::iterator it = m_attrs.find(item.m_pItem);
     if ( it == m_attrs.end() )
@@ -1306,6 +1342,8 @@ void wxTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
 
 void wxTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     wxTreeItemAttr *attr;
     wxMapTreeAttr::iterator it = m_attrs.find(item.m_pItem);
     if ( it == m_attrs.end() )
@@ -1331,6 +1369,8 @@ void wxTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 
 bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
+
     if ( item == wxTreeItemId(TVI_ROOT) )
     {
         // virtual (hidden) root is never visible
@@ -1360,6 +1400,8 @@ bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
 
 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
+
     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
     DoGetItem(&tvItem);
 
@@ -1368,8 +1410,7 @@ bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 
 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 {
-    // probably not a good idea to put it here
-    //wxASSERT( ItemHasChildren(item) );
+    wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
 
     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDED);
     DoGetItem(&tvItem);
@@ -1379,6 +1420,8 @@ bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 
 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
+
     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_SELECTED);
     DoGetItem(&tvItem);
 
@@ -1387,6 +1430,8 @@ bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 
 bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") );
+
     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD);
     DoGetItem(&tvItem);
 
@@ -1416,6 +1461,8 @@ wxTreeItemId wxTreeCtrl::GetSelection() const
 
 wxTreeItemId wxTreeCtrl::GetItemParent(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
     HTREEITEM hItem;
 
     if ( IS_VIRTUAL_ROOT(item) )
@@ -1439,6 +1486,8 @@ wxTreeItemId wxTreeCtrl::GetItemParent(const wxTreeItemId& item) const
 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
                                        wxTreeItemIdValue& cookie) const
 {
+    wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
     // remember the last child returned in 'cookie'
     cookie = TreeView_GetChild(GetHwnd(), HITEM(item));
 
@@ -1460,6 +1509,8 @@ wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
 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);
@@ -1482,6 +1533,8 @@ wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
 
 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
     // can this be done more efficiently?
     wxTreeItemIdValue cookie;
 
@@ -1498,11 +1551,13 @@ wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 
 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
     return wxTreeItemId(TreeView_GetNextSibling(GetHwnd(), HITEM(item)));
 }
 
 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
 {
+    wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
     return wxTreeItemId(TreeView_GetPrevSibling(GetHwnd(), HITEM(item)));
 }
 
@@ -1513,6 +1568,7 @@ wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
 
 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!"));
 
     return wxTreeItemId(TreeView_GetNextVisible(GetHwnd(), HITEM(item)));
@@ -1520,6 +1576,7 @@ wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
 
 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!"));
 
     return wxTreeItemId(TreeView_GetPrevVisible(GetHwnd(), HITEM(item)));
@@ -1531,6 +1588,8 @@ wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 
 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);
@@ -1541,6 +1600,8 @@ bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const
 
 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);
 
@@ -1894,7 +1955,11 @@ void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select)
         event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGING);
         if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
         {
-            if ( ::SelectItem(GetHwnd(), HITEM(item), select) )
+            if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) )
+            {
+                wxLogLastError(wxT("TreeView_SelectItem"));
+            }
+            else // ok
             {
                 event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
                 (void)GetEventHandler()->ProcessEvent(event);
@@ -1949,6 +2014,8 @@ void wxTreeCtrl::DeleteTextCtrl()
         m_textCtrl->SetHWND(0);
         delete m_textCtrl;
         m_textCtrl = NULL;
+
+        m_idEdited.Unset();
     }
 }
 
@@ -1959,6 +2026,7 @@ wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
 
     DeleteTextCtrl();
 
+    m_idEdited = item;
     m_textCtrl = (wxTextCtrl *)textControlClass->CreateObject();
     HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), HITEM(item));
 
@@ -2085,6 +2153,8 @@ int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 
 void wxTreeCtrl::SortChildren(const wxTreeItemId& item)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree 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!)
@@ -2134,10 +2204,10 @@ bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
 // 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
-long wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {
     bool processed = false;
-    long rc = 0;
+    WXLRESULT rc = 0;
     bool isMultiple = (GetWindowStyle() & wxTR_MULTIPLE) != 0;
 
     if ( (nMsg >= WM_MOUSEFIRST) && (nMsg <= WM_MOUSELAST) )
@@ -2205,7 +2275,7 @@ long wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
                     {
                         // avoid doing anything if we click on the only
                         // currently selected item
-                        
+
                         wxArrayTreeItemIds selections;
                         size_t count = GetSelections(selections);
                         if ( count == 0 ||
@@ -2216,7 +2286,7 @@ long wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
                             // 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))
                             {
                                 ::SetFocus(GetHwnd(), htItem);
@@ -2499,7 +2569,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 break;
             }
 #endif
-        
+
         case TVN_GETDISPINFO:
             eventType = wxEVT_COMMAND_TREE_GET_INFO;
             // fall through
@@ -2590,7 +2660,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             }
             break;
 
-        // NB: MSLU is broken and sends TVN_SELCHANGEDA instead of 
+        // 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:
@@ -2605,7 +2675,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                     eventType = wxEVT_COMMAND_TREE_SEL_CHANGING;
                 //else: already set above
 
-                if (hdr->code == TVN_SELCHANGINGW || 
+                if (hdr->code == TVN_SELCHANGINGW ||
                     hdr->code == TVN_SELCHANGEDW)
                 {
                     NM_TREEVIEWW* tv = (NM_TREEVIEWW *)lParam;
@@ -2779,7 +2849,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 
         case TVN_DELETEITEM:
             {
-                // NB: we might process this message using wxWindows event
+                // NB: we might process this message using wxWidgets event
                 //     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)
@@ -2811,7 +2881,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 HWND hText = TreeView_GetEditControl(GetHwnd());
                 if(hText != NULL)
                 {
-                    // MBN: if m_textCtrl already has an HWND, it is a stale 
+                    // 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
@@ -2857,7 +2927,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             }
             break;
 #endif
-        
+
         case TVN_SELCHANGING:
         case TVN_ITEMEXPANDING:
             // return true to prevent the action from happening
@@ -2934,7 +3004,7 @@ void wxTreeCtrl::SetState(const wxTreeItemId& node, int state)
     // Select the specified state, or -1 == cycle to the next one.
     if ( state == -1 )
     {
-        TreeView_GetItem(GetHwnd(), &tvi); 
+        TreeView_GetItem(GetHwnd(), &tvi);
 
         state = STATEIMAGEMASKTOINDEX(tvi.state) + 1;
         if ( state == m_imageListState->GetImageCount() )
@@ -2944,7 +3014,7 @@ void wxTreeCtrl::SetState(const wxTreeItemId& node, int state)
     wxCHECK_RET( state < m_imageListState->GetImageCount(),
                  _T("wxTreeCtrl::SetState(): item index out of bounds") );
 
-    tvi.state = INDEXTOSTATEIMAGEMASK(state); 
+    tvi.state = INDEXTOSTATEIMAGEMASK(state);
 
     TreeView_SetItem(GetHwnd(), &tvi);
 }
@@ -2955,7 +3025,7 @@ int wxTreeCtrl::GetState(const wxTreeItemId& node)
     tvi.hItem = (HTREEITEM)node.m_pItem;
     tvi.mask = TVIF_STATE;
     tvi.stateMask = TVIS_STATEIMAGEMASK;
-    TreeView_GetItem(GetHwnd(), &tvi); 
+    TreeView_GetItem(GetHwnd(), &tvi);
 
     return STATEIMAGEMASKTOINDEX(tvi.state);
 }