Fix for VA 4.0

[wxWidgets.git] / samples / treectrl / treetest.cpp

diff --git a/samples/treectrl/treetest.cpp b/samples/treectrl/treetest.cpp
index 690e648d3740230fef173744ba543c5ff8771edc..2bd8bfa6465901b90a6133b3300c36de7b3b8a26 100644 (file)
--- a/samples/treectrl/treetest.cpp
+++ b/samples/treectrl/treetest.cpp
@@ -6,376 +6,725 @@
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart and Markus Holzem
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart and Markus Holzem

-// Licence:    wxWindows license
+// Licence:     wxWindows license

 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__

-#pragma implementation
-#pragma interface
+  #pragma implementation
+  #pragma interface

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

-#pragma hdrstop
+  #pragma hdrstop

 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

-#include "wx/wx.h"
+  #include "wx/wx.h"

 #endif
 
 #endif
 

+#include "wx/log.h"
+
+#include "wx/image.h"
+#include "wx/imaglist.h"

 #include "wx/treectrl.h"
 
 #include "wx/treectrl.h"
 

+#include "math.h"
+
+#ifdef __WXMSW__
+    // comment out this line to test multiple selection even under MSW (where
+    // it looks ugly - but works)
+    #define NO_MULTIPLE_SELECTION
+#endif
+
+#define NO_VARIABLE_HEIGHT
+

 #include "treetest.h"
 
 #include "treetest.h"
 

+// under Windows the icons are in the .rc file
+#ifndef __WXMSW__
+  #include "icon1.xpm"
+  #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!", \
+                                          "Tree sample error",              \
+                                          wxOK | wxICON_EXCLAMATION,        \
+                                          this);                            \
+                             return;                                        \
+                           }
+

 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)

-       EVT_MENU(TREE_QUIT, MyFrame::OnQuit)
-       EVT_MENU(TREE_ABOUT, MyFrame::OnAbout)
+    EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
+    EVT_MENU(TreeTest_About, MyFrame::OnAbout)
+    EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
+#ifndef NO_MULTIPLE_SELECTION
+    EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
+    EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
+    EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
+#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)
+    EVT_MENU(TreeTest_UnBold, MyFrame::OnClearBold)
+    EVT_MENU(TreeTest_Delete, MyFrame::OnDelete)
+    EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
+    EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
+    EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
+    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)
 END_EVENT_TABLE()
 
 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)

-       EVT_TREE_BEGIN_DRAG(TREE_CTRL, MyTreeCtrl::OnBeginDrag)
-       EVT_TREE_BEGIN_RDRAG(TREE_CTRL, MyTreeCtrl::OnBeginRDrag)
-       EVT_TREE_BEGIN_LABEL_EDIT(TREE_CTRL, MyTreeCtrl::OnBeginLabelEdit)
-       EVT_TREE_END_LABEL_EDIT(TREE_CTRL, MyTreeCtrl::OnEndLabelEdit)
-       EVT_TREE_DELETE_ITEM(TREE_CTRL, MyTreeCtrl::OnDeleteItem)
-       EVT_TREE_GET_INFO(TREE_CTRL, MyTreeCtrl::OnGetInfo)
-       EVT_TREE_SET_INFO(TREE_CTRL, MyTreeCtrl::OnSetInfo)
-       EVT_TREE_ITEM_EXPANDED(TREE_CTRL, MyTreeCtrl::OnItemExpanded)
-       EVT_TREE_ITEM_EXPANDING(TREE_CTRL, MyTreeCtrl::OnItemExpanding)
-       EVT_TREE_SEL_CHANGED(TREE_CTRL, MyTreeCtrl::OnSelChanged)
-       EVT_TREE_SEL_CHANGING(TREE_CTRL, MyTreeCtrl::OnSelChanging)
-       EVT_TREE_KEY_DOWN(TREE_CTRL, MyTreeCtrl::OnKeyDown)
+    EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
+    EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
+    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)
+    EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
+    EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
+    EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
+    EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
+    EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
+    EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
+    EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)

 END_EVENT_TABLE()
 
 IMPLEMENT_APP(MyApp)
 
 END_EVENT_TABLE()
 
 IMPLEMENT_APP(MyApp)
 

-// `Main program' equivalent, creating windows and returning main app frame
-bool MyApp::OnInit(void)
+bool MyApp::OnInit()

 {
 {

-  // Create the main frame window
-  MyFrame *frame = new MyFrame(NULL, "wxTreeCtrl Test", 50, 50, 450, 340);
+    // Create the main frame window
+    MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 340);

 
 

-  // This reduces flicker effects - even better would be to define OnEraseBackground
-  // to do nothing. When the tree control's scrollbars are show or hidden, the
-  // frame is sent a background erase event.
-  frame->SetBackgroundColour(wxColour(255, 255, 255));
+    // Show the frame
+    frame->Show(TRUE);
+    SetTopWindow(frame);

 
 

-  // Give it an icon
-#ifdef __WINDOWS__
-  frame->SetIcon(wxIcon("mondrian"));
+    return TRUE;
+}
+
+
+// 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))
+{
+    // This reduces flicker effects - even better would be to define
+    // OnEraseBackground to do nothing. When the tree control's scrollbars are
+    // show or hidden, the frame is sent a background erase event.
+    SetBackgroundColour(wxColour(255, 255, 255));
+
+    // Give it an icon
+    SetIcon(wxICON(mondrian));
+
+    // Make a menubar
+    wxMenu *file_menu = new wxMenu,
+           *tree_menu = new wxMenu,
+           *item_menu = new wxMenu;
+
+    file_menu->Append(TreeTest_About, "&About...");
+    file_menu->AppendSeparator();
+    file_menu->Append(TreeTest_Quit, "E&xit");
+
+    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();
+    tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
+    tree_menu->AppendSeparator();
+    tree_menu->Append(TreeTest_IncIndent, "Add 5 points to indentation\tAlt-I");
+    tree_menu->Append(TreeTest_DecIndent, "Reduce indentation by 5 points\tAlt-R");
+    tree_menu->AppendSeparator();
+    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->Append(TreeTest_Dump, "&Dump item children");
+    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
 #endif

-#ifdef __X__
-  frame->SetIcon(wxIcon("aiai.xbm"));
+
+    wxMenuBar *menu_bar = new wxMenuBar;
+    menu_bar->Append(file_menu, "&File");
+    menu_bar->Append(tree_menu, "&Tree");
+    menu_bar->Append(item_menu, "&Item");
+    SetMenuBar(menu_bar);
+
+    m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
+                                wxDefaultPosition, wxDefaultSize,
+                                wxTR_HAS_BUTTONS |
+                                wxTR_EDIT_LABELS |
+#ifndef NO_MULTIPLE_SELECTION
+                                wxTR_MULTIPLE |
+#endif
+#ifndef NO_VARIABLE_HEIGHT
+                                wxTR_HAS_VARIABLE_ROW_HEIGHT |

 #endif
 #endif

+                                wxSUNKEN_BORDER);
+
+    m_treeCtrl->SetBackgroundColour(wxColour(204, 205, 79));
+
+    wxTextCtrl *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);
+
+#ifdef __WXMOTIF__
+    // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
+    // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
+    delete wxLog::SetActiveTarget(new wxLogStderr);
+#else
+    // set our text control as the log target
+    wxLogTextCtrl *logWindow = new wxLogTextCtrl(textCtrl);
+    delete wxLog::SetActiveTarget(logWindow);
+#endif
+}

 
 

-  // Make an image list containing small icons
-  m_imageListNormal = new wxImageList(16, 16, TRUE);
-
-  wxIcon icon1("icon1", wxBITMAP_TYPE_ICO_RESOURCE);
-  m_imageListNormal->Add(icon1);
-  wxIcon icon2("icon2", wxBITMAP_TYPE_ICO_RESOURCE);
-  m_imageListNormal->Add(icon2);
-
-  // Make a menubar
-  wxMenu *file_menu = new wxMenu;
-
-  file_menu->Append(TREE_ABOUT, "&About");
-  file_menu->Append(TREE_QUIT, "E&xit");
-  wxMenuBar *menu_bar = new wxMenuBar;
-  menu_bar->Append(file_menu, "&File");
-  frame->SetMenuBar(menu_bar);
-
-  // Make a panel with a message
-  frame->m_treeCtrl = new MyTreeCtrl(frame, TREE_CTRL, wxPoint(0, 0), wxSize(400, 200),
-       wxTR_HAS_BUTTONS|wxSUNKEN_BORDER);
-  frame->m_logWindow = new wxTextCtrl(frame, -1, "", wxPoint(0, 0), wxSize(400, 200),
-       wxTE_MULTILINE|wxSUNKEN_BORDER);
-
-  wxLayoutConstraints *c = new wxLayoutConstraints;
-  c->top.SameAs                        (frame, wxTop);
-  c->left.SameAs               (frame, wxLeft);
-  c->right.SameAs              (frame, wxRight);
-  c->height.PercentOf  (frame, wxHeight, 66);
-  frame->m_treeCtrl->SetConstraints(c);
-
-  c = new wxLayoutConstraints;
-  c->top.Below                 (frame->m_treeCtrl);
-  c->left.SameAs               (frame, wxLeft);
-  c->right.SameAs              (frame, wxRight);
-  c->bottom.SameAs             (frame, wxBottom);
-  frame->m_logWindow->SetConstraints(c);
-  frame->SetAutoLayout(TRUE);
-
-  frame->m_treeCtrl->SetImageList(wxGetApp().m_imageListNormal, wxIMAGE_LIST_NORMAL);
-
-  long rootId = frame->m_treeCtrl->InsertItem(0, "Root", 0);
-
-  char buf[20];
-  int i;
-  wxString str;
-
-  for ( i = 0; i < 10; i++)
-  {
-       sprintf(buf, "Folder child %d", i);
-    str = buf;
-    long id = frame->m_treeCtrl->InsertItem(rootId, str, 0);
-       int j;
-    for ( j = 0; j < 5; j++)
+MyFrame::~MyFrame()
+{
+    delete wxLog::SetActiveTarget(NULL);
+}
+
+void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
+{
+    Close(TRUE);
+}
+
+void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
+{
+    wxMessageBox("Tree test sample\n"
+                 "(c) Julian Smart 1997, Vadim Zeitlin 1998",
+                 "About tree test",
+                 wxOK | wxICON_INFORMATION, this);
+}
+
+void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
+{
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    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);
+    if ( !s_text.IsEmpty() )

     {
     {

-         sprintf(buf, "File child %d", j);
-      str = buf;
-      frame->m_treeCtrl->InsertItem(id, str, 1);
+        m_treeCtrl->SetItemText(item, s_text);

     }
     }

-  }
-  for ( i = 0; i < 10; i++)
-  {
-       sprintf(buf, "File child %d", i);
-    str = buf;
-    frame->m_treeCtrl->InsertItem(rootId, str, 1);
-  }
+#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();

 
 

-  frame->CreateStatusBar(3);
-  frame->SetStatusText("", 0);
+    CHECK_ITEM( item );

 
 

-  // Show the frame
-  frame->Show(TRUE);
-  
-  SetTopWindow(frame);
+    int i = m_treeCtrl->GetChildrenCount( item, FALSE );

 
 

-  return TRUE;
+    wxLogMessage(wxT("%d children"), i);

 }
 
 }
 

-// My frame constructor
-MyFrame::MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
-  wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
+void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))

 {
 {

-       m_treeCtrl = NULL;
-       m_logWindow = NULL;
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( item );
+
+    int i = m_treeCtrl->GetChildrenCount( item );
+
+    wxLogMessage(wxT("%d children"), i);

 }
 
 }
 

-MyFrame::~MyFrame(void)
+void MyFrame::DoSort(bool reverse)

 {
 {

-       delete wxGetApp().m_imageListNormal;
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( item );
+
+    m_treeCtrl->DoSortChildren(item, reverse);

 }
 
 }
 

-void MyFrame::OnQuit(wxCommandEvent& event)
+void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))

 {
 {

-  Close(TRUE);
+    wxTreeItemId root = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( root );
+
+    m_treeCtrl->GetItemsRecursively(root, -1);

 }
 
 }
 

-void MyFrame::OnAbout(wxCommandEvent& event)
+#ifndef NO_MULTIPLE_SELECTION
+
+void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))

 {
 {

-  wxMessageDialog dialog(this, "Tree test sample\nJulian Smart (c) 1997",
-       "About tree test", wxOK|wxCANCEL);
+    wxArrayTreeItemIds array;
+
+    size_t count = m_treeCtrl->GetSelections(array);
+    wxLogMessage(wxT("%u items selected"), count);

 
 

-  dialog.ShowModal();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
+    }

 }
 
 }
 

-// MyTreeCtrl
+void MyFrame::OnSelect(wxCommandEvent& event)
+{
+    m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
+}

 
 

-void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
+void MyFrame::OnUnselect(wxCommandEvent& event)

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    m_treeCtrl->UnselectAll();
+}
+
+#endif // NO_MULTIPLE_SELECTION

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+void MyFrame::DoSetBold(bool bold)
+{
+    wxTreeItemId item = m_treeCtrl->GetSelection();

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+    CHECK_ITEM( item );

 
 

-       str << "OnBeginDrag\n";
-       str.flush();
-#endif
+    m_treeCtrl->SetItemBold(item, bold);

 }
 
 }
 

-void MyTreeCtrl::OnBeginRDrag(wxTreeEvent& event)
+void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    wxTreeItemId item = m_treeCtrl->GetSelection();

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    CHECK_ITEM( item );

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+    m_treeCtrl->Delete(item);
+}

 
 

-       str << "OnBeginRDrag\n";
-       str.flush();
-#endif
+void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
+{
+    wxTreeItemId item = m_treeCtrl->GetSelection();
+
+    CHECK_ITEM( item );
+
+    m_treeCtrl->DeleteChildren(item);

 }
 
 }
 

-void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
+void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    m_treeCtrl->DeleteAllItems();
+}

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+void MyFrame::OnRecreate(wxCommandEvent& event)
+{
+    OnDeleteAll(event);
+    m_treeCtrl->AddTestItemsToTree(3, 2);
+}

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
+{
+    m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
+}

 
 

-       str << "OnBeginLabelEdit\n";
-       str.flush();
-#endif
+void MyFrame::OnEnsureVisible(wxCommandEvent& event)
+{
+    m_treeCtrl->DoEnsureVisible();

 }
 
 }
 

-void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
+void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), 1, "2nd item");
+}

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
+{
+    static int s_num = 0;

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+    wxString text;
+    text.Printf("Item #%d", ++s_num);

 
 

-       str << "OnEndLabelEdit\n";
-       str.flush();
-#endif
+    m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
+                           text /*,
+                           MyTreeCtrl::TreeCtrlIcon_File */ );

 }
 
 }
 

-void MyTreeCtrl::OnDeleteItem(wxTreeEvent& event)
+void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    unsigned int indent = m_treeCtrl->GetIndent();
+    if (indent < 100)
+        m_treeCtrl->SetIndent( indent+5 );
+}

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
+{
+    unsigned int indent = m_treeCtrl->GetIndent();
+    if (indent > 10)
+        m_treeCtrl->SetIndent( indent-5 );
+}

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
+{
+    unsigned int indent = m_treeCtrl->GetSpacing();
+    if (indent < 100)
+        m_treeCtrl->SetSpacing( indent+5 );
+}

 
 

-       str << "OnDeleteItem\n";
-       str.flush();
-#endif
+void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
+{
+    unsigned int indent = m_treeCtrl->GetSpacing();
+    if (indent > 10)
+        m_treeCtrl->SetSpacing( indent-5 );

 }
 
 }
 

-void MyTreeCtrl::OnGetInfo(wxTreeEvent& event)
+void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    wxTreeItemId item = m_treeCtrl->GetSelection();

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    CHECK_ITEM( item );
+
+    m_treeCtrl->DoToggleIcon(item);
+}

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+// MyTreeCtrl implementation
+IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)

 
 

-       str << "OnGetInfo\n";
-       str.flush();
+MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
+                       const wxPoint& pos, const wxSize& size,
+                       long style)
+          : wxTreeCtrl(parent, id, pos, size, style)
+{
+#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;
+
+    // Make an image list containing small icons
+    m_imageListNormal = new wxImageList(16, 16, TRUE);
+
+    // should correspond to TreeCtrlIcon_xxx enum
+#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
+#  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
+#  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
 #endif

+
+    SetImageList(m_imageListNormal);
+
+    // Add some items to the tree
+    AddTestItemsToTree(3, 2);
+}
+
+MyTreeCtrl::~MyTreeCtrl()
+{
+    delete m_imageListNormal;

 }
 
 }
 

-void MyTreeCtrl::OnSetInfo(wxTreeEvent& event)
+int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
+                               const wxTreeItemId& item2)

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    if ( m_reverseSort )
+    {
+        // just exchange 1st and 2nd items
+        return wxTreeCtrl::OnCompareItems(item2, item1);
+    }
+    else
+    {
+        return wxTreeCtrl::OnCompareItems(item1, item2);
+    }
+}

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
+                                     size_t numChildren,
+                                     size_t depth,
+                                     size_t folder)
+{
+    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 ( 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 + 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 ( !hasChildren && n == numChildren - 1 )
+            {
+                m_lastItem = id;
+            }
+
+            AddItemsRecursively(id, numChildren, depth - 1, n + 1);
+        }
+    }
+    //else: done!
+}

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
+                                    size_t depth)
+{
+    wxTreeItemId rootId = AddRoot("Root",
+                                  TreeCtrlIcon_Folder, TreeCtrlIcon_Folder,
+                                  new MyTreeItemData("Root item"));
+    SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);

 
 

-       str << "OnSetInfo\n";
-       str.flush();
-#endif
+    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::OnItemExpanded(wxTreeEvent& event)
+void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    wxTreeItemId id;

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    if( cookie == -1 )
+        id = GetFirstChild(idParent, cookie);
+    else
+        id = GetNextChild(idParent, cookie);

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+    if(id <= 0)
+        return;

 
 

-       str << "OnItemExpanded\n";
-       str.flush();
-#endif
+    wxString text = GetItemText(id);
+    wxLogMessage(text);
+
+    if (ItemHasChildren(id))
+        GetItemsRecursively(id,-1);
+
+    GetItemsRecursively(idParent, cookie);

 }
 
 }
 

-void MyTreeCtrl::OnItemExpanding(wxTreeEvent& event)
+void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
+                                                          : TreeCtrlIcon_Folder;

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    SetItemImage(item, image);
+}

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);

 
 

-       str << "OnItemExpanding\n";
-       str.flush();
-#endif
+// avoid repetition
+#define TREE_EVENT_HANDLER(name)                            \
+void MyTreeCtrl::name(wxTreeEvent& WXUNUSED(event))         \
+{                                                           \
+    wxLogMessage(#name);                                    \

 }
 
 }
 

-void MyTreeCtrl::OnSelChanged(wxTreeEvent& event)
+TREE_EVENT_HANDLER(OnBeginDrag)
+TREE_EVENT_HANDLER(OnBeginRDrag)
+TREE_EVENT_HANDLER(OnDeleteItem)
+TREE_EVENT_HANDLER(OnGetInfo)
+TREE_EVENT_HANDLER(OnSetInfo)
+TREE_EVENT_HANDLER(OnItemExpanded)
+TREE_EVENT_HANDLER(OnItemExpanding)
+TREE_EVENT_HANDLER(OnItemCollapsed)
+TREE_EVENT_HANDLER(OnSelChanged)
+TREE_EVENT_HANDLER(OnSelChanging)
+
+#undef TREE_EVENT_HANDLER
+
+void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    wxLogMessage("OnBeginLabelEdit");

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    // for testing, prevent this items label editing
+    wxTreeItemId itemId = event.GetItem();
+    if ( IsTestItem(itemId) )
+    {
+        wxMessageBox("You can't edit this item.");

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+        event.Veto();
+    }
+}

 
 

-       str << "OnSelChanged\n";
-       str.flush();
-#endif
+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::OnSelChanging(wxTreeEvent& event)
+void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    wxLogMessage("OnItemCollapsing");

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    // for testing, prevent the user from collapsing the first child folder
+    wxTreeItemId itemId = event.GetItem();
+    if ( IsTestItem(itemId) )
+    {
+        wxMessageBox("You can't collapse this item.");

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+        event.Veto();
+    }
+}

 
 

-       str << "OnSelChanging\n";
-       str.flush();
-#endif
+void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent&WXUNUSED(event))
+{
+    wxLogMessage("OnTreeKeyDown");

 }
 
 }
 

-void MyTreeCtrl::OnKeyDown(wxTreeEvent& event)
+void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event))

 {
 {

-       if ( !wxGetApp().GetTopWindow() )
-               return;
+    // show some info about this item
+    wxTreeItemId itemId = GetSelection();
+    MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);

 
 

-       wxTextCtrl *text = ((MyFrame *)wxGetApp().GetTopWindow())->m_logWindow;
-       if ( !text )
-               return;
+    if ( item != NULL )
+    {
+        item->ShowInfo(this);
+    }

 
 

-#ifndef __GNUWIN32__
-       ostream str(text);
+    wxLogMessage("OnItemActivated");
+}

 
 

-       str << "OnKeyDown\n";
-       str.flush();
-#endif
+void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
+{
+    wxTreeItemId id = HitTest(event.GetPosition());
+    if ( !id )
+        wxLogMessage("No item under mouse");
+    else
+    {
+        MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
+        if ( item )
+            wxLogMessage("Item '%s' under mouse", item->GetDesc());
+    }
+}
+
+static inline const char *Bool2String(bool b)
+{
+    return b ? "" : "not ";

 }
 
 }
 

+void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
+{
+    wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
+                 "%u children (%u immediately under this item).",
+                 m_desc.c_str(),
+                 Bool2String(tree->IsSelected(GetId())),
+                 Bool2String(tree->IsExpanded(GetId())),
+                 Bool2String(tree->IsBold(GetId())),
+                 tree->GetChildrenCount(GetId()),
+                 tree->GetChildrenCount(GetId(), FALSE));
+}