X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/622d090e8ae11b240cbe17568a6047e3888c5a52..abceee76ea4d642ccfd3cf91cc139a3fe2b471b7:/samples/treectrl/treetest.cpp

diff --git a/samples/treectrl/treetest.cpp b/samples/treectrl/treetest.cpp
index 04c4682fcf..5d371764f4 100644
--- a/samples/treectrl/treetest.cpp
+++ b/samples/treectrl/treetest.cpp
@@ -33,24 +33,29 @@
 
 #include "math.h"
 
-#include "treetest.h"
+#ifdef __WXMSW__
+    // this is not supported at all under MSW
+    #define NO_VARIABLE_HEIGHT
 
-#ifdef wxTR_HAS_VARIABLE_ROW_HIGHT
-#define USE_TR_HAS_VARIABLE_ROW_HIGHT 1
-#else
-#define USE_TR_HAS_VARIABLE_ROW_HIGHT 0
+    #define NO_MULTIPLE_SELECTION
+
+    // this is supported (so the next line may be uncommented) but not very
+    // well :-(
+    #undef NO_MULTIPLE_SELECTION
 #endif
 
+#include "treetest.h"
+
 // under Windows the icons are in the .rc file
 #ifndef __WXMSW__
-#if !USE_TR_HAS_VARIABLE_ROW_HIGHT
   #include "icon1.xpm"
-#endif
   #include "icon2.xpm"
+  #include "icon3.xpm"
+  #include "icon4.xpm"
+  #include "icon5.xpm"
   #include "mondrian.xpm"
 #endif
 
-
 // verify that the item is ok and insult the user if it is not
 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                            \
                              wxMessageBox("Please select some item first!", \
@@ -61,11 +66,20 @@
                            }
 
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
+    EVT_SIZE(MyFrame::OnSize)
+
     EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
     EVT_MENU(TreeTest_About, MyFrame::OnAbout)
     EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
-    EVT_MENU(TreeTest_Dump_Selected, MyFrame::OnDumpSelected)
+#ifndef NO_MULTIPLE_SELECTION
+    EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
+    EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
+    EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
+    EVT_MENU(TreeTest_ToggleSel, MyFrame::OnToggleSel)
+#endif // NO_MULTIPLE_SELECTION
     EVT_MENU(TreeTest_Rename, MyFrame::OnRename)
+    EVT_MENU(TreeTest_Count, MyFrame::OnCount)
+    EVT_MENU(TreeTest_CountRec, MyFrame::OnCountRec)
     EVT_MENU(TreeTest_Sort, MyFrame::OnSort)
     EVT_MENU(TreeTest_SortRev, MyFrame::OnSortRev)
     EVT_MENU(TreeTest_Bold, MyFrame::OnSetBold)
@@ -77,19 +91,24 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU(TreeTest_CollapseAndReset, MyFrame::OnCollapseAndReset)
     EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
     EVT_MENU(TreeTest_AddItem, MyFrame::OnAddItem)
+    EVT_MENU(TreeTest_InsertItem, MyFrame::OnInsertItem)
     EVT_MENU(TreeTest_IncIndent, MyFrame::OnIncIndent)
     EVT_MENU(TreeTest_DecIndent, MyFrame::OnDecIndent)
     EVT_MENU(TreeTest_IncSpacing, MyFrame::OnIncSpacing)
     EVT_MENU(TreeTest_DecSpacing, MyFrame::OnDecSpacing)
+    EVT_MENU(TreeTest_ToggleIcon, MyFrame::OnToggleIcon)
 END_EVENT_TABLE()
 
 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
+    EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
+#if 0       // there are so many of those that logging them causes flicker
     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
+#endif
     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
@@ -119,7 +138,8 @@ bool MyApp::OnInit()
 
 // My frame constructor
 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
-       : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h))
+       : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h)),
+         m_treeCtrl(NULL), m_textCtrl(NULL)
 {
     // This reduces flicker effects - even better would be to define
     // OnEraseBackground to do nothing. When the tree control's scrollbars are
@@ -136,16 +156,23 @@ MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 
     file_menu->Append(TreeTest_About, "&About...");
     file_menu->AppendSeparator();
-    file_menu->Append(TreeTest_Quit, "E&xit");
+    file_menu->Append(TreeTest_Quit, "E&xit\tAlt-X");
 
+#ifndef NO_MULTIPLE_SELECTION
+    tree_menu->Append(TreeTest_ToggleSel, "&Toggle selection mode");
+#endif // NO_MULTIPLE_SELECTION
     tree_menu->Append(TreeTest_Recreate, "&Recreate the tree");
     tree_menu->Append(TreeTest_CollapseAndReset, "C&ollapse and reset");
     tree_menu->AppendSeparator();
     tree_menu->Append(TreeTest_AddItem, "Append a &new item");
+    tree_menu->Append(TreeTest_InsertItem, "&Insert a new item");
     tree_menu->Append(TreeTest_Delete, "&Delete this item");
     tree_menu->Append(TreeTest_DeleteChildren, "Delete &children");
     tree_menu->Append(TreeTest_DeleteAll, "Delete &all items");
     tree_menu->AppendSeparator();
+    tree_menu->Append(TreeTest_Count, "Count children of current item");
+    tree_menu->Append(TreeTest_CountRec, "Recursively count children of current item");
+    tree_menu->AppendSeparator();
     tree_menu->Append(TreeTest_Sort, "Sort children of current item");
     tree_menu->Append(TreeTest_SortRev, "Sort in reversed order");
     tree_menu->AppendSeparator();
@@ -157,16 +184,21 @@ MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
     tree_menu->Append(TreeTest_IncSpacing, "Add 5 points to spacing\tCtrl-I");
     tree_menu->Append(TreeTest_DecSpacing, "Reduce spacing by 5 points\tCtrl-R");
 
-    item_menu->AppendSeparator();
     item_menu->Append(TreeTest_Dump, "&Dump item children");
-#ifdef wxTR_MULTIPLE
-    item_menu->Append(TreeTest_Dump_Selected, "Dump selected items\tAlt-S");
-#endif
     item_menu->Append(TreeTest_Rename, "&Rename item...");
 
     item_menu->AppendSeparator();
     item_menu->Append(TreeTest_Bold, "Make item &bold");
     item_menu->Append(TreeTest_UnBold, "Make item &not bold");
+    item_menu->AppendSeparator();
+    item_menu->Append(TreeTest_ToggleIcon, "Toggle the items &icon");
+
+#ifndef NO_MULTIPLE_SELECTION
+    item_menu->AppendSeparator();
+    item_menu->Append(TreeTest_DumpSelected, "Dump selected items\tAlt-D");
+    item_menu->Append(TreeTest_Select, "Select current item\tAlt-S");
+    item_menu->Append(TreeTest_Unselect, "Unselect everything\tAlt-U");
+#endif // NO_MULTIPLE_SELECTION
 
     wxMenuBar *menu_bar = new wxMenuBar;
     menu_bar->Append(file_menu, "&File");
@@ -176,33 +208,19 @@ MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 
     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
                                 wxDefaultPosition, wxDefaultSize,
-                                wxTR_HAS_BUTTONS | 
-#ifdef wxTR_MULTIPLE
-				wxTR_MULTIPLE |
+                                wxTR_HAS_BUTTONS |
+                                wxTR_EDIT_LABELS |
+#ifndef NO_VARIABLE_HEIGHT
+                                wxTR_HAS_VARIABLE_ROW_HEIGHT |
 #endif
-#if USE_TR_HAS_VARIABLE_ROW_HIGHT
-				wxTR_HAS_VARIABLE_ROW_HIGHT |
-#endif
-				wxSUNKEN_BORDER);
-    wxTextCtrl *textCtrl = new wxTextCtrl(this, -1, "",
+                                wxSUNKEN_BORDER);
+
+    m_treeCtrl->SetBackgroundColour(wxColour(204, 205, 79));
+
+    m_textCtrl = new wxTextCtrl(this, -1, "",
                                 wxDefaultPosition, wxDefaultSize,
                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 
-    wxLayoutConstraints *c = new wxLayoutConstraints;
-    c->top.SameAs(this, wxTop);
-    c->left.SameAs(this, wxLeft);
-    c->right.SameAs(this, wxRight);
-    c->height.PercentOf(this, wxHeight, 66);
-    m_treeCtrl->SetConstraints(c);
-
-    c = new wxLayoutConstraints;
-    c->top.Below(m_treeCtrl);
-    c->left.SameAs(this, wxLeft);
-    c->right.SameAs(this, wxRight);
-    c->bottom.SameAs(this, wxBottom);
-    textCtrl->SetConstraints(c);
-    SetAutoLayout(TRUE);
-
     // create a status bar with 3 panes
     CreateStatusBar(3);
     SetStatusText("", 0);
@@ -213,7 +231,7 @@ MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
     delete wxLog::SetActiveTarget(new wxLogStderr);
 #else
     // set our text control as the log target
-    wxLogTextCtrl *logWindow = new wxLogTextCtrl(textCtrl);
+    wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
     delete wxLog::SetActiveTarget(logWindow);
 #endif
 }
@@ -223,6 +241,22 @@ MyFrame::~MyFrame()
     delete wxLog::SetActiveTarget(NULL);
 }
 
+void MyFrame::OnSize(wxSizeEvent& event)
+{
+    if ( m_treeCtrl && m_textCtrl )
+    {
+        Resize(GetClientSize());
+    }
+
+    event.Skip();
+}
+
+void MyFrame::Resize(const wxSize& size)
+{
+    m_treeCtrl->SetSize(0, 0, size.x, 2*size.y/3);
+    m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
+}
+
 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 {
     Close(TRUE);
@@ -231,8 +265,7 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 {
     wxMessageBox("Tree test sample\n"
-                 "Julian Smart (c) 1997,\n"
-                 "Vadim Zeitlin (c) 1998",
+                 "(c) Julian Smart 1997, Vadim Zeitlin 1998",
                  "About tree test",
                  wxOK | wxICON_INFORMATION, this);
 }
@@ -243,6 +276,8 @@ void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 
     CHECK_ITEM( item );
 
+    // old code - now we edit in place
+#if 0
     static wxString s_text;
     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
             s_text, this);
@@ -250,6 +285,32 @@ void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
     {
         m_treeCtrl->SetItemText(item, s_text);
     }
+#endif // 0
+
+    // TODO demonstrate creating a custom edit control...
+    (void)m_treeCtrl->EditLabel(item);
+}
+
+void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
+{
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( item );
+
+    int i = m_treeCtrl->GetChildrenCount( item, FALSE );
+
+    wxLogMessage(wxT("%d children"), i);
+}
+
+void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
+{
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( item );
+
+    int i = m_treeCtrl->GetChildrenCount( item );
+
+    wxLogMessage(wxT("%d children"), i);
 }
 
 void MyFrame::DoSort(bool reverse)
@@ -270,20 +331,49 @@ void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
     m_treeCtrl->GetItemsRecursively(root, -1);
 }
 
+#ifndef NO_MULTIPLE_SELECTION
+
+void MyFrame::OnToggleSel(wxCommandEvent& WXUNUSED(event))
+{
+    long style = m_treeCtrl->GetWindowStyle();
+    if ( style & wxTR_MULTIPLE )
+        style &= ~wxTR_MULTIPLE;
+    else
+        style |= wxTR_MULTIPLE;
+
+    delete m_treeCtrl;
+
+    m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
+                                wxDefaultPosition, wxDefaultSize,
+                                style);
+    Resize(GetClientSize());
+}
+
 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 {
-#ifdef wxTR_MULTIPLE 
-   wxArrayTreeItemIds array;
+    wxArrayTreeItemIds array;
 
-    m_treeCtrl->GetSelections(array);
-    size_t nos=array.Count();
-    wxLogMessage(wxString("items selected : ")<< (int)nos);
+    size_t count = m_treeCtrl->GetSelections(array);
+    wxLogMessage(wxT("%u items selected"), count);
 
-    for (size_t n=0; n<nos; ++n)
-      wxLogMessage(m_treeCtrl->GetItemText(array.Item(n)));
-#endif
+    for ( size_t n = 0; n < count; n++ )
+    {
+        wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
+    }
+}
+
+void MyFrame::OnSelect(wxCommandEvent& event)
+{
+    m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
+}
+
+void MyFrame::OnUnselect(wxCommandEvent& event)
+{
+    m_treeCtrl->UnselectAll();
 }
 
+#endif // NO_MULTIPLE_SELECTION
+
 void MyFrame::DoSetBold(bool bold)
 {
     wxTreeItemId item = m_treeCtrl->GetSelection();
@@ -332,6 +422,11 @@ void MyFrame::OnEnsureVisible(wxCommandEvent& event)
     m_treeCtrl->DoEnsureVisible();
 }
 
+void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
+{
+    m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), 1, "2nd item");
+}
+
 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 {
     static int s_num = 0;
@@ -340,8 +435,8 @@ void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
     text.Printf("Item #%d", ++s_num);
 
     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
-                           text,
-                           MyTreeCtrl::TreeCtrlIcon_File);
+                           text /*,
+                           MyTreeCtrl::TreeCtrlIcon_File */ );
 }
 
 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
@@ -372,6 +467,15 @@ void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
         m_treeCtrl->SetSpacing( indent-5 );
 }
 
+void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
+{
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( item );
+
+    m_treeCtrl->DoToggleIcon(item);
+}
+
 // MyTreeCtrl implementation
 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 
@@ -380,11 +484,13 @@ MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
                        long style)
           : wxTreeCtrl(parent, id, pos, size, style)
 {
-#if USE_TR_HAS_VARIABLE_ROW_HIGHT
-    wxImage::AddHandler(new wxJPEGHandler); 
+#ifndef NO_VARIABLE_HEIGHT
+#if wxUSE_LIBJPEG
+    wxImage::AddHandler(new wxJPEGHandler);
     wxImage image;
 
     image.LoadFile(wxString("horse.jpg"), wxBITMAP_TYPE_JPEG );
+#endif
 #endif
 
     m_reverseSort = FALSE;
@@ -396,19 +502,25 @@ MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 #if defined(__WXMSW__) && defined(__WIN16__)
     // This is required in 16-bit Windows mode only because we can't load a specific (16x16)
     // icon image, so it comes out stretched
-#  if USE_TR_HAS_VARIABLE_ROW_HIGHT
+#  ifndef NO_VARIABLE_HEIGHT
     m_imageListNormal->Add(image.ConvertToBitmap());
 #  else
     m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 #  endif
     m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
+    m_imageListNormal->Add(wxBitmap("bitmap3", wxBITMAP_TYPE_BMP_RESOURCE));
+    m_imageListNormal->Add(wxBitmap("bitmap4", wxBITMAP_TYPE_BMP_RESOURCE));
+    m_imageListNormal->Add(wxBitmap("bitmap5", wxBITMAP_TYPE_BMP_RESOURCE));
 #else
-#  if USE_TR_HAS_VARIABLE_ROW_HIGHT
+#  ifndef NO_VARIABLE_HEIGHT
     m_imageListNormal->Add(image.ConvertToBitmap());
 #  else
     m_imageListNormal->Add(wxICON(icon1));
 #  endif
     m_imageListNormal->Add(wxICON(icon2));
+    m_imageListNormal->Add(wxICON(icon3));
+    m_imageListNormal->Add(wxICON(icon4));
+    m_imageListNormal->Add(wxICON(icon5));
 #endif
 
     SetImageList(m_imageListNormal);
@@ -443,21 +555,32 @@ void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 {
     if ( depth > 0 )
     {
+        bool hasChildren = depth > 1;
+
         wxString str;
         for ( size_t n = 0; n < numChildren; n++ )
         {
             // at depth 1 elements won't have any more children
-            if (depth == 1)
-                str.Printf("%s child %d.%d", "File", folder, n + 1);
-            else
+            if ( hasChildren )
                 str.Printf("%s child %d", "Folder", n + 1);
+            else
+                str.Printf("%s child %d.%d", "File", folder, n + 1);
 
+            // here we pass to AppendItem() normal and selected item images (we
+            // suppose that selected image follows the normal one in the enum)
             int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
-            wxTreeItemId id = AppendItem(idParent, str, image, image,
+            wxTreeItemId id = AppendItem(idParent, str, image, image + 1,
                                          new MyTreeItemData(str));
 
+            // and now we also set the expanded one (only for the folders)
+            if ( hasChildren )
+            {
+                SetItemImage(id, TreeCtrlIcon_FolderOpened,
+                             wxTreeItemIcon_Expanded);
+            }
+
             // remember the last child for OnEnsureVisible()
-            if ( depth == 1 && n == numChildren - 1 )
+            if ( !hasChildren && n == numChildren - 1 )
             {
                 m_lastItem = id;
             }
@@ -474,8 +597,21 @@ void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
     wxTreeItemId rootId = AddRoot("Root",
                                   TreeCtrlIcon_Folder, TreeCtrlIcon_Folder,
                                   new MyTreeItemData("Root item"));
+    SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 
     AddItemsRecursively(rootId, numChildren, depth, 0);
+
+    // set some colours/fonts for testing
+    SetItemFont(rootId, *wxITALIC_FONT);
+
+    long cookie;
+    wxTreeItemId id = GetFirstChild(rootId, cookie);
+    SetItemTextColour(id, *wxBLUE);
+
+    id = GetNextChild(rootId, cookie);
+    id = GetNextChild(rootId, cookie);
+    SetItemTextColour(id, *wxRED);
+    SetItemBackgroundColour(id, *wxLIGHT_GREY);
 }
 
 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
@@ -490,7 +626,7 @@ void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
     if(id <= 0)
         return;
 
-    wxString text=GetItemText(id);
+    wxString text = GetItemText(id);
     wxLogMessage(text);
 
     if (ItemHasChildren(id))
@@ -499,18 +635,24 @@ void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
     GetItemsRecursively(idParent, cookie);
 }
 
+void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
+{
+    int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
+                                                          : TreeCtrlIcon_Folder;
+
+    SetItemImage(item, image);
+}
+
 
 // avoid repetition
 #define TREE_EVENT_HANDLER(name)                            \
-void MyTreeCtrl::name(wxTreeEvent& WXUNUSED(event))         \
+void MyTreeCtrl::name(wxTreeEvent& event)                   \
 {                                                           \
     wxLogMessage(#name);                                    \
+    event.Skip();                                           \
 }
 
-TREE_EVENT_HANDLER(OnBeginDrag)
 TREE_EVENT_HANDLER(OnBeginRDrag)
-TREE_EVENT_HANDLER(OnBeginLabelEdit)
-TREE_EVENT_HANDLER(OnEndLabelEdit)
 TREE_EVENT_HANDLER(OnDeleteItem)
 TREE_EVENT_HANDLER(OnGetInfo)
 TREE_EVENT_HANDLER(OnSetInfo)
@@ -519,16 +661,96 @@ TREE_EVENT_HANDLER(OnItemExpanding)
 TREE_EVENT_HANDLER(OnItemCollapsed)
 TREE_EVENT_HANDLER(OnSelChanged)
 TREE_EVENT_HANDLER(OnSelChanging)
+TREE_EVENT_HANDLER(OnTreeKeyDown)
 
 #undef TREE_EVENT_HANDLER
 
+void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
+{
+    // need to explicitly allow drag
+    if ( event.GetItem() != GetRootItem() )
+    {
+        m_draggedItem = event.GetItem();
+
+        wxLogMessage("OnBeginDrag: started dragging %s",
+                     GetItemText(m_draggedItem).c_str());
+
+        event.Allow();
+    }
+    else
+    {
+        wxLogMessage("OnBeginDrag: this item can't be dragged.");
+    }
+}
+
+void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
+{
+    wxTreeItemId itemSrc = m_draggedItem,
+                 itemDst = event.GetItem();
+    m_draggedItem = (wxTreeItemId)0l;
+
+    // where to copy the item?
+    if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
+    {
+        // copy to the parent then
+        itemDst = GetParent(itemDst);
+    }
+
+    if ( !itemDst.IsOk() )
+    {
+        wxLogMessage("OnEndDrag: can't drop here.");
+
+        return;
+    }
+
+    wxString text = GetItemText(itemSrc);
+    wxLogMessage("OnEndDrag: '%s' copied to '%s'.",
+                 text.c_str(), GetItemText(itemDst).c_str());
+
+    // just do append here - we could also insert it just before/after the item
+    // on which it was dropped, but this requires slightly more work... we also
+    // completely ignore the client data and icon of the old item but could
+    // copy them as well.
+    //
+    // Finally, we only copy one item here but we might copy the entire tree if
+    // we were dragging a folder.
+    AppendItem(itemDst, text, TreeCtrlIcon_File);
+}
+
+void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
+{
+    wxLogMessage("OnBeginLabelEdit");
+
+    // for testing, prevent this items label editing
+    wxTreeItemId itemId = event.GetItem();
+    if ( IsTestItem(itemId) )
+    {
+        wxMessageBox("You can't edit this item.");
+
+        event.Veto();
+    }
+}
+
+void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
+{
+    wxLogMessage("OnEndLabelEdit");
+
+    // don't allow anything except letters in the labels
+    if ( !event.GetLabel().IsWord() )
+    {
+        wxMessageBox("The label should contain only letters.");
+
+        event.Veto();
+    }
+}
+
 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 {
     wxLogMessage("OnItemCollapsing");
 
     // for testing, prevent the user from collapsing the first child folder
     wxTreeItemId itemId = event.GetItem();
-    if ( GetParent(itemId) == GetRootItem() && !GetPrevSibling(itemId) )
+    if ( IsTestItem(itemId) )
     {
         wxMessageBox("You can't collapse this item.");
 
@@ -536,11 +758,6 @@ void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
     }
 }
 
-void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent&WXUNUSED(event))
-{
-    wxLogMessage("OnTreeKeyDown");
-}
-
 void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event))
 {
     // show some info about this item