///////////////////////////////////////////////////////////////////////////// // Name: treetest.cpp // Purpose: wxTreeCtrl sample // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ // Copyright: (c) Julian Smart and Markus Holzem // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ #pragma implementation #pragma interface #endif // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/wx.h" #endif #include "wx/log.h" #include "wx/image.h" #include "wx/imaglist.h" #include "wx/treectrl.h" #include "math.h" //#define NO_VARIABLE_HEIGHT //#define NO_MULTIPLE_SELECTION #ifdef __WXMSW__ // comment out this line to test multiple selection even under MSW (where // it looks ugly - but works) #define NO_MULTIPLE_SELECTION #endif #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) 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) 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) 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) bool MyApp::OnInit() { // Create the main frame window MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 340); // Show the frame frame->Show(TRUE); SetTopWindow(frame); 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\tAlt-X"); 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 ¬ 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 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 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 } 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() ) { 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) { wxTreeItemId item = m_treeCtrl->GetSelection(); CHECK_ITEM( item ); m_treeCtrl->DoSortChildren(item, reverse); } void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event)) { wxTreeItemId root = m_treeCtrl->GetSelection(); CHECK_ITEM( root ); m_treeCtrl->GetItemsRecursively(root, -1); } #ifndef NO_MULTIPLE_SELECTION void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event)) { wxArrayTreeItemIds array; size_t count = m_treeCtrl->GetSelections(array); wxLogMessage(wxT("%u items selected"), count); 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(); CHECK_ITEM( item ); m_treeCtrl->SetItemBold(item, bold); } void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event)) { wxTreeItemId item = m_treeCtrl->GetSelection(); CHECK_ITEM( item ); m_treeCtrl->Delete(item); } void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event)) { wxTreeItemId item = m_treeCtrl->GetSelection(); CHECK_ITEM( item ); m_treeCtrl->DeleteChildren(item); } void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event)) { m_treeCtrl->DeleteAllItems(); } void MyFrame::OnRecreate(wxCommandEvent& event) { OnDeleteAll(event); m_treeCtrl->AddTestItemsToTree(3, 2); } void MyFrame::OnCollapseAndReset(wxCommandEvent& event) { m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem()); } 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; wxString text; text.Printf("Item #%d", ++s_num); m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(), text /*, MyTreeCtrl::TreeCtrlIcon_File */ ); } void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event)) { unsigned int indent = m_treeCtrl->GetIndent(); if (indent < 100) m_treeCtrl->SetIndent( indent+5 ); } void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event)) { unsigned int indent = m_treeCtrl->GetIndent(); if (indent > 10) m_treeCtrl->SetIndent( indent-5 ); } void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event)) { unsigned int indent = m_treeCtrl->GetSpacing(); if (indent < 100) m_treeCtrl->SetSpacing( indent+5 ); } void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event)) { unsigned int indent = m_treeCtrl->GetSpacing(); if (indent > 10) 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) 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 SetImageList(m_imageListNormal); // Add some items to the tree AddTestItemsToTree(3, 2); } MyTreeCtrl::~MyTreeCtrl() { delete m_imageListNormal; } int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1, const wxTreeItemId& item2) { if ( m_reverseSort ) { // just exchange 1st and 2nd items return wxTreeCtrl::OnCompareItems(item2, item1); } else { return wxTreeCtrl::OnCompareItems(item1, item2); } } 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! } 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); 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) { wxTreeItemId id; if( cookie == -1 ) id = GetFirstChild(idParent, cookie); else id = GetNextChild(idParent, cookie); if(id <= 0) return; wxString text = GetItemText(id); wxLogMessage(text); if (ItemHasChildren(id)) GetItemsRecursively(id,-1); 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& event) \ { \ wxLogMessage(#name); \ event.Skip(); \ } 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) 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 ( IsTestItem(itemId) ) { wxMessageBox("You can't collapse this item."); event.Veto(); } } void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event)) { // show some info about this item wxTreeItemId itemId = GetSelection(); MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId); if ( item != NULL ) { item->ShowInfo(this); } wxLogMessage("OnItemActivated"); } 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)); }