src/msw/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectrl.cpp
   3 // Purpose:     wxTreeCtrl
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin to be less MSW-specific on 10.10.98
   6 // Created:     1997
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19 #ifdef __GNUG__
  20     #pragma implementation "treectrl.h"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #include "wx/window.h"
  31 #include "wx/msw/private.h"
  32
  33 // Mingw32 is a bit mental even though this is done in winundef
  34 #ifdef GetFirstChild
  35     #undef GetFirstChild
  36 #endif
  37
  38 #ifdef GetNextSibling
  39     #undef GetNextSibling
  40 #endif
  41
  42 #if defined(__WIN95__)
  43
  44 #include "wx/log.h"
  45 #include "wx/dynarray.h"
  46 #include "wx/imaglist.h"
  47 #include "wx/treectrl.h"
  48
  49 #ifdef __GNUWIN32__
  50 #include "wx/msw/gnuwin32/extra.h"
  51 #endif
  52
  53 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
  54     #include <commctrl.h>
  55 #endif
  56
  57 // Bug in headers, sometimes
  58 #ifndef TVIS_FOCUSED
  59     #define TVIS_FOCUSED            0x0001
  60 #endif
  61
  62 // ----------------------------------------------------------------------------
  63 // private classes
  64 // ----------------------------------------------------------------------------
  65
  66 // a convenient wrapper around TV_ITEM struct which adds a ctor
  67 struct wxTreeViewItem : public TV_ITEM
  68 {
  69     wxTreeViewItem(const wxTreeItemId& item,    // the item handle
  70                    UINT mask_,                  // fields which are valid
  71                    UINT stateMask_ = 0)         // for TVIF_STATE only
  72     {
  73         // hItem member is always valid
  74         mask = mask_ | TVIF_HANDLE;
  75         stateMask = stateMask_;
  76         hItem = (HTREEITEM) (WXHTREEITEM) item;
  77     }
  78 };
  79
  80 // a class which encapsulates the tree traversal logic: it vists all (unless
  81 // OnVisit() returns FALSE) items under the given one
  82 class wxTreeTraversal
  83 {
  84 public:
  85     wxTreeTraversal(const wxTreeCtrl *tree)
  86     {
  87         m_tree = tree;
  88     }
  89
  90     // do traverse the tree: visit all items (recursively by default) under the
  91     // given one; return TRUE if all items were traversed or FALSE if the
  92     // traversal was aborted because OnVisit returned FALSE
  93     bool DoTraverse(const wxTreeItemId& root, bool recursively = TRUE);
  94
  95     // override this function to do whatever is needed for each item, return
  96     // FALSE to stop traversing
  97     virtual bool OnVisit(const wxTreeItemId& item) = 0;
  98
  99 protected:
 100     const wxTreeCtrl *GetTree() const { return m_tree; }
 101
 102 private:
 103     bool Traverse(const wxTreeItemId& root, bool recursively);
 104
 105     const wxTreeCtrl *m_tree;
 106 };
 107
 108 // ----------------------------------------------------------------------------
 109 // macros
 110 // ----------------------------------------------------------------------------
 111
 112 #if !USE_SHARED_LIBRARY
 113     IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl)
 114 #endif
 115
 116 // ----------------------------------------------------------------------------
 117 // variables
 118 // ----------------------------------------------------------------------------
 119
 120 // handy table for sending events
 121 static const wxEventType g_events[2][2] =
 122 {
 123     { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, wxEVT_COMMAND_TREE_ITEM_COLLAPSING },
 124     { wxEVT_COMMAND_TREE_ITEM_EXPANDED,  wxEVT_COMMAND_TREE_ITEM_EXPANDING  }
 125 };
 126
 127 // ============================================================================
 128 // implementation
 129 // ============================================================================
 130
 131 // ----------------------------------------------------------------------------
 132 // tree traversal
 133 // ----------------------------------------------------------------------------
 134
 135 bool wxTreeTraversal::DoTraverse(const wxTreeItemId& root, bool recursively)
 136 {
 137     if ( !OnVisit(root) )
 138         return FALSE;
 139
 140     return Traverse(root, recursively);
 141 }
 142
 143 bool wxTreeTraversal::Traverse(const wxTreeItemId& root, bool recursively)
 144 {
 145     long cookie;
 146     wxTreeItemId child = m_tree->GetFirstChild(root, cookie);
 147     while ( child.IsOk() )
 148     {
 149         // depth first traversal
 150         if ( recursively && !Traverse(child, TRUE) )
 151             return FALSE;
 152
 153         if ( !OnVisit(child) )
 154             return FALSE;
 155
 156         child = m_tree->GetNextChild(root, cookie);
 157     }
 158
 159     return TRUE;
 160 }
 161
 162 // ----------------------------------------------------------------------------
 163 // construction and destruction
 164 // ----------------------------------------------------------------------------
 165
 166 void wxTreeCtrl::Init()
 167 {
 168     m_imageListNormal = NULL;
 169     m_imageListState = NULL;
 170     m_textCtrl = NULL;
 171 }
 172
 173 bool wxTreeCtrl::Create(wxWindow *parent,
 174                         wxWindowID id,
 175                         const wxPoint& pos,
 176                         const wxSize& size,
 177                         long style,
 178                         const wxValidator& validator,
 179                         const wxString& name)
 180 {
 181     Init();
 182
 183     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 184         return FALSE;
 185
 186     DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_TABSTOP |
 187                    TVS_HASLINES | TVS_SHOWSELALWAYS;
 188
 189     if ( m_windowStyle & wxTR_HAS_BUTTONS )
 190         wstyle |= TVS_HASBUTTONS;
 191
 192     if ( m_windowStyle & wxTR_EDIT_LABELS )
 193         wstyle |= TVS_EDITLABELS;
 194
 195     if ( m_windowStyle & wxTR_LINES_AT_ROOT )
 196         wstyle |= TVS_LINESATROOT;
 197
 198     // we emulate the multiple selection tree controls by using checkboxes: set
 199     // up the image list we need for this if we do have multiple selections
 200     if ( m_windowStyle & wxTR_MULTIPLE )
 201         wstyle |= TVS_CHECKBOXES;
 202
 203     // Create the tree control.
 204     if ( !MSWCreateControl(WC_TREEVIEW, wstyle) )
 205         return FALSE;
 206
 207     // VZ: this is some experimental code which may be used to get the
 208     //     TVS_CHECKBOXES style functionality for comctl32.dll < 4.71.
 209     //     AFAIK, the standard DLL does about the same thing anyhow.
 210 #if 0
 211     if ( m_windowStyle & wxTR_MULTIPLE )
 212     {
 213         wxBitmap bmp;
 214
 215         // create the DC compatible with the current screen
 216         HDC hdcMem = CreateCompatibleDC(NULL);
 217
 218         // create a mono bitmap of the standard size
 219         int x = GetSystemMetrics(SM_CXMENUCHECK);
 220         int y = GetSystemMetrics(SM_CYMENUCHECK);
 221         wxImageList imagelistCheckboxes(x, y, FALSE, 2);
 222         HBITMAP hbmpCheck = CreateBitmap(x, y,   // bitmap size
 223                                          1,      // # of color planes
 224                                          1,      // # bits needed for one pixel
 225                                          0);     // array containing colour data
 226         SelectObject(hdcMem, hbmpCheck);
 227
 228         // then draw a check mark into it
 229         RECT rect = { 0, 0, x, y };
 230         if ( !::DrawFrameControl(hdcMem, &rect,
 231                                  DFC_BUTTON,
 232                                  DFCS_BUTTONCHECK | DFCS_CHECKED) )
 233         {
 234             wxLogLastError(_T("DrawFrameControl(check)"));
 235         }
 236
 237         bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
 238         imagelistCheckboxes.Add(bmp);
 239
 240         if ( !::DrawFrameControl(hdcMem, &rect,
 241                                  DFC_BUTTON,
 242                                  DFCS_BUTTONCHECK) )
 243         {
 244             wxLogLastError(_T("DrawFrameControl(uncheck)"));
 245         }
 246
 247         bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
 248         imagelistCheckboxes.Add(bmp);
 249
 250         // clean up
 251         ::DeleteDC(hdcMem);
 252
 253         // set the imagelist
 254         SetStateImageList(&imagelistCheckboxes);
 255     }
 256 #endif // 0
 257
 258     SetSize(pos.x, pos.y, size.x, size.y);
 259
 260     return TRUE;
 261 }
 262
 263 wxTreeCtrl::~wxTreeCtrl()
 264 {
 265     DeleteTextCtrl();
 266
 267     // delete user data to prevent memory leaks
 268     DeleteAllItems();
 269 }
 270
 271 // ----------------------------------------------------------------------------
 272 // accessors
 273 // ----------------------------------------------------------------------------
 274
 275 // simple wrappers which add error checking in debug mode
 276
 277 bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
 278 {
 279     if ( !TreeView_GetItem(GetHwnd(), tvItem) )
 280     {
 281         wxLogLastError("TreeView_GetItem");
 282
 283         return FALSE;
 284     }
 285
 286     return TRUE;
 287 }
 288
 289 void wxTreeCtrl::DoSetItem(wxTreeViewItem* tvItem)
 290 {
 291     if ( TreeView_SetItem(GetHwnd(), tvItem) == -1 )
 292     {
 293         wxLogLastError("TreeView_SetItem");
 294     }
 295 }
 296
 297 size_t wxTreeCtrl::GetCount() const
 298 {
 299     return (size_t)TreeView_GetCount(GetHwnd());
 300 }
 301
 302 unsigned int wxTreeCtrl::GetIndent() const
 303 {
 304     return TreeView_GetIndent(GetHwnd());
 305 }
 306
 307 void wxTreeCtrl::SetIndent(unsigned int indent)
 308 {
 309     TreeView_SetIndent(GetHwnd(), indent);
 310 }
 311
 312 wxImageList *wxTreeCtrl::GetImageList() const
 313 {
 314     return m_imageListNormal;
 315 }
 316
 317 wxImageList *wxTreeCtrl::GetStateImageList() const
 318 {
 319     return m_imageListNormal;
 320 }
 321
 322 void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which)
 323 {
 324     // no error return
 325     TreeView_SetImageList(GetHwnd(),
 326                           imageList ? imageList->GetHIMAGELIST() : 0,
 327                           which);
 328 }
 329
 330 void wxTreeCtrl::SetImageList(wxImageList *imageList)
 331 {
 332     SetAnyImageList(m_imageListNormal = imageList, TVSIL_NORMAL);
 333 }
 334
 335 void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
 336 {
 337     SetAnyImageList(m_imageListState = imageList, TVSIL_STATE);
 338 }
 339
 340 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
 341                                     bool recursively) const
 342 {
 343     class TraverseCounter : public wxTreeTraversal
 344     {
 345     public:
 346         TraverseCounter(const wxTreeCtrl *tree,
 347                         const wxTreeItemId& root,
 348                         bool recursively)
 349             : wxTreeTraversal(tree)
 350             {
 351                 m_count = 0;
 352
 353                 DoTraverse(root, recursively);
 354             }
 355
 356         virtual bool OnVisit(const wxTreeItemId& item)
 357         {
 358             m_count++;
 359
 360             return TRUE;
 361         }
 362
 363         size_t GetCount() const { return m_count; }
 364
 365     private:
 366         size_t m_count;
 367     } counter(this, item, recursively);
 368
 369     return counter.GetCount();
 370 }
 371
 372 // ----------------------------------------------------------------------------
 373 // Item access
 374 // ----------------------------------------------------------------------------
 375
 376 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 377 {
 378     wxChar buf[512];  // the size is arbitrary...
 379
 380     wxTreeViewItem tvItem(item, TVIF_TEXT);
 381     tvItem.pszText = buf;
 382     tvItem.cchTextMax = WXSIZEOF(buf);
 383     if ( !DoGetItem(&tvItem) )
 384     {
 385         // don't return some garbage which was on stack, but an empty string
 386         buf[0] = _T('\0');
 387     }
 388
 389     return wxString(buf);
 390 }
 391
 392 void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 393 {
 394     wxTreeViewItem tvItem(item, TVIF_TEXT);
 395     tvItem.pszText = (wxChar *)text.c_str();  // conversion is ok
 396     DoSetItem(&tvItem);
 397 }
 398
 399 void wxTreeCtrl::DoSetItemImages(const wxTreeItemId& item,
 400                                  int image,
 401                                  int imageSel)
 402 {
 403     wxTreeViewItem tvItem(item, TVIF_IMAGE | TVIF_SELECTEDIMAGE);
 404     tvItem.iSelectedImage = imageSel;
 405     tvItem.iImage = image;
 406     DoSetItem(&tvItem);
 407 }
 408
 409 int wxTreeCtrl::GetItemImage(const wxTreeItemId& item) const
 410 {
 411     wxTreeViewItem tvItem(item, TVIF_IMAGE);
 412     DoGetItem(&tvItem);
 413
 414     return tvItem.iImage;
 415 }
 416
 417 void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image)
 418 {
 419     // NB: at least in version 5.00.0518.9 of comctl32.dll we need to always
 420     //     change both normal and selected image - otherwise the change simply
 421     //     doesn't take place!
 422     DoSetItemImages(item, image, GetItemSelectedImage(item));
 423 }
 424
 425 int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const
 426 {
 427     wxTreeViewItem tvItem(item, TVIF_SELECTEDIMAGE);
 428     DoGetItem(&tvItem);
 429
 430     return tvItem.iSelectedImage;
 431 }
 432
 433 void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image)
 434 {
 435     // NB: at least in version 5.00.0518.9 of comctl32.dll we need to always
 436     //     change both normal and selected image - otherwise the change simply
 437     //     doesn't take place!
 438     DoSetItemImages(item, GetItemImage(item), image);
 439 }
 440
 441 wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 442 {
 443     wxTreeViewItem tvItem(item, TVIF_PARAM);
 444     if ( !DoGetItem(&tvItem) )
 445     {
 446         return NULL;
 447     }
 448
 449     return (wxTreeItemData *)tvItem.lParam;
 450 }
 451
 452 void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 453 {
 454     wxTreeViewItem tvItem(item, TVIF_PARAM);
 455     tvItem.lParam = (LPARAM)data;
 456     DoSetItem(&tvItem);
 457 }
 458
 459 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 460 {
 461     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
 462     tvItem.cChildren = (int)has;
 463     DoSetItem(&tvItem);
 464 }
 465
 466 void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 467 {
 468     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD);
 469     tvItem.state = bold ? TVIS_BOLD : 0;
 470     DoSetItem(&tvItem);
 471 }
 472
 473 void wxTreeCtrl::SetItemDropHighlight(const wxTreeItemId& item, bool highlight)
 474 {
 475     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_DROPHILITED);
 476     tvItem.state = highlight ? TVIS_DROPHILITED : 0;
 477     DoSetItem(&tvItem);
 478 }
 479
 480 // ----------------------------------------------------------------------------
 481 // Item status
 482 // ----------------------------------------------------------------------------
 483
 484 bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
 485 {
 486     // Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect
 487     RECT rect;
 488     return SendMessage(GetHwnd(), TVM_GETITEMRECT, FALSE, (LPARAM)&rect) != 0;
 489
 490 }
 491
 492 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 493 {
 494     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
 495     DoGetItem(&tvItem);
 496
 497     return tvItem.cChildren != 0;
 498 }
 499
 500 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 501 {
 502     // probably not a good idea to put it here
 503     //wxASSERT( ItemHasChildren(item) );
 504
 505     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDED);
 506     DoGetItem(&tvItem);
 507
 508     return (tvItem.state & TVIS_EXPANDED) != 0;
 509 }
 510
 511 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 512 {
 513     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_SELECTED);
 514     DoGetItem(&tvItem);
 515
 516     return (tvItem.state & TVIS_SELECTED) != 0;
 517 }
 518
 519 bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
 520 {
 521     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD);
 522     DoGetItem(&tvItem);
 523
 524     return (tvItem.state & TVIS_BOLD) != 0;
 525 }
 526
 527 // ----------------------------------------------------------------------------
 528 // navigation
 529 // ----------------------------------------------------------------------------
 530
 531 wxTreeItemId wxTreeCtrl::GetRootItem() const
 532 {
 533     return wxTreeItemId((WXHTREEITEM) TreeView_GetRoot(GetHwnd()));
 534 }
 535
 536 wxTreeItemId wxTreeCtrl::GetSelection() const
 537 {
 538     wxCHECK_MSG( !(m_windowStyle & wxTR_MULTIPLE), (WXHTREEITEM)0,
 539                  _T("this only works with single selection controls") );
 540
 541     return wxTreeItemId((WXHTREEITEM) TreeView_GetSelection(GetHwnd()));
 542 }
 543
 544 wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
 545 {
 546     return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
 547 }
 548
 549 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
 550                                        long& _cookie) const
 551 {
 552     // remember the last child returned in 'cookie'
 553     _cookie = (long)TreeView_GetChild(GetHwnd(), (HTREEITEM) (WXHTREEITEM)item);
 554
 555     return wxTreeItemId((WXHTREEITEM)_cookie);
 556 }
 557
 558 wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
 559                                       long& _cookie) const
 560 {
 561     wxTreeItemId l = wxTreeItemId((WXHTREEITEM)TreeView_GetNextSibling(GetHwnd(),
 562                                    (HTREEITEM)(WXHTREEITEM)_cookie));
 563     _cookie = (long)l;
 564
 565     return l;
 566 }
 567
 568 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 569 {
 570     // can this be done more efficiently?
 571     long cookie;
 572
 573     wxTreeItemId childLast,
 574     child = GetFirstChild(item, cookie);
 575     while ( child.IsOk() )
 576     {
 577         childLast = child;
 578         child = GetNextChild(item, cookie);
 579     }
 580
 581     return childLast;
 582 }
 583
 584 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
 585 {
 586     return wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
 587 }
 588
 589 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
 590 {
 591     return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevSibling(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
 592 }
 593
 594 wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
 595 {
 596     return wxTreeItemId((WXHTREEITEM) TreeView_GetFirstVisible(GetHwnd()));
 597 }
 598
 599 wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
 600 {
 601     wxASSERT_MSG( IsVisible(item), _T("The item you call GetNextVisible() "
 602                                       "for must be visible itself!"));
 603
 604     return wxTreeItemId((WXHTREEITEM) TreeView_GetNextVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
 605 }
 606
 607 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 608 {
 609     wxASSERT_MSG( IsVisible(item), _T("The item you call GetPrevVisible() "
 610                                       "for must be visible itself!"));
 611
 612     return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
 613 }
 614
 615 // ----------------------------------------------------------------------------
 616 // multiple selections emulation
 617 // ----------------------------------------------------------------------------
 618
 619 bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const
 620 {
 621     // receive the desired information.
 622     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
 623     DoGetItem(&tvItem);
 624
 625     // state image indices are 1 based
 626     return ((tvItem.state >> 12) - 1) == 1;
 627 }
 628
 629 void wxTreeCtrl::SetItemCheck(const wxTreeItemId& item, bool check)
 630 {
 631     // receive the desired information.
 632     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
 633
 634     // state images are one-based
 635     tvItem.state = (check ? 2 : 1) << 12;
 636
 637     DoSetItem(&tvItem);
 638 }
 639
 640 size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const
 641 {
 642     class TraverseSelections : public wxTreeTraversal
 643     {
 644     public:
 645         TraverseSelections(const wxTreeCtrl *tree,
 646                            wxArrayTreeItemIds& selections)
 647             : wxTreeTraversal(tree), m_selections(selections)
 648             {
 649                 m_selections.Empty();
 650
 651                 DoTraverse(tree->GetRootItem());
 652             }
 653
 654         virtual bool OnVisit(const wxTreeItemId& item)
 655         {
 656             if ( GetTree()->IsItemChecked(item) )
 657             {
 658                 m_selections.Add(item);
 659             }
 660
 661             return TRUE;
 662         }
 663
 664     private:
 665         wxArrayTreeItemIds& m_selections;
 666     } selector(this, selections);
 667
 668     return selections.GetCount();
 669 }
 670
 671 // ----------------------------------------------------------------------------
 672 // Usual operations
 673 // ----------------------------------------------------------------------------
 674
 675 wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
 676                                       wxTreeItemId hInsertAfter,
 677                                       const wxString& text,
 678                                       int image, int selectedImage,
 679                                       wxTreeItemData *data)
 680 {
 681     TV_INSERTSTRUCT tvIns;
 682     tvIns.hParent = (HTREEITEM) (WXHTREEITEM)parent;
 683     tvIns.hInsertAfter = (HTREEITEM) (WXHTREEITEM) hInsertAfter;
 684
 685     // This is how we insert the item as the first child: supply a NULL hInsertAfter
 686     if (tvIns.hInsertAfter == (HTREEITEM) 0)
 687     {
 688         tvIns.hInsertAfter = TVI_FIRST;
 689     }
 690
 691     UINT mask = 0;
 692     if ( !text.IsEmpty() )
 693     {
 694         mask |= TVIF_TEXT;
 695         tvIns.item.pszText = (wxChar *)text.c_str();  // cast is ok
 696     }
 697
 698     if ( image != -1 )
 699     {
 700         mask |= TVIF_IMAGE;
 701         tvIns.item.iImage = image;
 702
 703         if ( selectedImage == -1 )
 704         {
 705             // take the same image for selected icon if not specified
 706             selectedImage = image;
 707         }
 708     }
 709
 710     if ( selectedImage != -1 )
 711     {
 712         mask |= TVIF_SELECTEDIMAGE;
 713         tvIns.item.iSelectedImage = selectedImage;
 714     }
 715
 716     if ( data != NULL )
 717     {
 718         mask |= TVIF_PARAM;
 719         tvIns.item.lParam = (LPARAM)data;
 720     }
 721
 722     tvIns.item.mask = mask;
 723
 724     HTREEITEM id = (HTREEITEM) TreeView_InsertItem(GetHwnd(), &tvIns);
 725     if ( id == 0 )
 726     {
 727         wxLogLastError("TreeView_InsertItem");
 728     }
 729
 730     if ( data != NULL )
 731     {
 732         // associate the application tree item with Win32 tree item handle
 733         data->SetId((WXHTREEITEM)id);
 734     }
 735
 736     return wxTreeItemId((WXHTREEITEM)id);
 737 }
 738
 739 // for compatibility only
 740 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 741                                     const wxString& text,
 742                                     int image, int selImage,
 743                                     long insertAfter)
 744 {
 745     return DoInsertItem(parent, (WXHTREEITEM)insertAfter, text,
 746                         image, selImage, NULL);
 747 }
 748
 749 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
 750                                  int image, int selectedImage,
 751                                  wxTreeItemData *data)
 752 {
 753     return DoInsertItem(wxTreeItemId((WXHTREEITEM) 0), (WXHTREEITEM) 0,
 754                         text, image, selectedImage, data);
 755 }
 756
 757 wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
 758                                      const wxString& text,
 759                                      int image, int selectedImage,
 760                                      wxTreeItemData *data)
 761 {
 762     return DoInsertItem(parent, (WXHTREEITEM) TVI_FIRST,
 763                         text, image, selectedImage, data);
 764 }
 765
 766 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 767                                     const wxTreeItemId& idPrevious,
 768                                     const wxString& text,
 769                                     int image, int selectedImage,
 770                                     wxTreeItemData *data)
 771 {
 772     return DoInsertItem(parent, idPrevious, text, image, selectedImage, data);
 773 }
 774
 775 wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parent,
 776                                     const wxString& text,
 777                                     int image, int selectedImage,
 778                                     wxTreeItemData *data)
 779 {
 780     return DoInsertItem(parent, (WXHTREEITEM) TVI_LAST,
 781                         text, image, selectedImage, data);
 782 }
 783
 784 void wxTreeCtrl::Delete(const wxTreeItemId& item)
 785 {
 786     if ( !TreeView_DeleteItem(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item) )
 787     {
 788         wxLogLastError("TreeView_DeleteItem");
 789     }
 790 }
 791
 792 // delete all children (but don't delete the item itself)
 793 void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
 794 {
 795     long cookie;
 796
 797     wxArrayLong children;
 798     wxTreeItemId child = GetFirstChild(item, cookie);
 799     while ( child.IsOk() )
 800     {
 801         children.Add((long)(WXHTREEITEM)child);
 802
 803         child = GetNextChild(item, cookie);
 804     }
 805
 806     size_t nCount = children.Count();
 807     for ( size_t n = 0; n < nCount; n++ )
 808     {
 809         if ( !TreeView_DeleteItem(GetHwnd(), (HTREEITEM)children[n]) )
 810         {
 811             wxLogLastError("TreeView_DeleteItem");
 812         }
 813     }
 814 }
 815
 816 void wxTreeCtrl::DeleteAllItems()
 817 {
 818     if ( !TreeView_DeleteAllItems(GetHwnd()) )
 819     {
 820         wxLogLastError("TreeView_DeleteAllItems");
 821     }
 822 }
 823
 824 void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
 825 {
 826     wxASSERT_MSG( flag == TVE_COLLAPSE ||
 827                   flag == (TVE_COLLAPSE | TVE_COLLAPSERESET) ||
 828                   flag == TVE_EXPAND   ||
 829                   flag == TVE_TOGGLE,
 830                   _T("Unknown flag in wxTreeCtrl::DoExpand") );
 831
 832     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
 833     // emulate them. This behaviour has changed slightly with comctl32.dll
 834     // v 4.70 - now it does send them but only the first time. To maintain
 835     // compatible behaviour and also in order to not have surprises with the
 836     // future versions, don't rely on this and still do everything ourselves.
 837     // To avoid that the messages be sent twice when the item is expanded for
 838     // the first time we must clear TVIS_EXPANDEDONCE style manually.
 839
 840     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDEDONCE);
 841     tvItem.state = 0;
 842     DoSetItem(&tvItem);
 843
 844     if ( TreeView_Expand(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item, flag) != 0 )
 845     {
 846         wxTreeEvent event(wxEVT_NULL, m_windowId);
 847         event.m_item = item;
 848
 849         bool isExpanded = IsExpanded(item);
 850
 851         event.SetEventObject(this);
 852
 853         // FIXME return value of {EXPAND|COLLAPS}ING event handler is discarded
 854         event.SetEventType(g_events[isExpanded][TRUE]);
 855         GetEventHandler()->ProcessEvent(event);
 856
 857         event.SetEventType(g_events[isExpanded][FALSE]);
 858         GetEventHandler()->ProcessEvent(event);
 859     }
 860     //else: change didn't took place, so do nothing at all
 861 }
 862
 863 void wxTreeCtrl::Expand(const wxTreeItemId& item)
 864 {
 865     DoExpand(item, TVE_EXPAND);
 866 }
 867
 868 void wxTreeCtrl::Collapse(const wxTreeItemId& item)
 869 {
 870     DoExpand(item, TVE_COLLAPSE);
 871 }
 872
 873 void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
 874 {
 875     DoExpand(item, TVE_COLLAPSE | TVE_COLLAPSERESET);
 876 }
 877
 878 void wxTreeCtrl::Toggle(const wxTreeItemId& item)
 879 {
 880     DoExpand(item, TVE_TOGGLE);
 881 }
 882
 883 void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action)
 884 {
 885     DoExpand(item, action);
 886 }
 887
 888 void wxTreeCtrl::Unselect()
 889 {
 890     wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE), _T("doesn't make sense") );
 891
 892     // just remove the selection
 893     SelectItem(wxTreeItemId((WXHTREEITEM) 0));
 894 }
 895
 896 void wxTreeCtrl::UnselectAll()
 897 {
 898     if ( m_windowStyle & wxTR_MULTIPLE )
 899     {
 900         wxArrayTreeItemIds selections;
 901         size_t count = GetSelections(selections);
 902         for ( size_t n = 0; n < count; n++ )
 903         {
 904             SetItemCheck(selections[n], FALSE);
 905         }
 906     }
 907     else
 908     {
 909         // just remove the selection
 910         Unselect();
 911     }
 912 }
 913
 914 void wxTreeCtrl::SelectItem(const wxTreeItemId& item)
 915 {
 916     if ( m_windowStyle & wxTR_MULTIPLE )
 917     {
 918         // selecting the item means checking it
 919         SetItemCheck(item);
 920     }
 921     else
 922     {
 923         // inspite of the docs (MSDN Jan 99 edition), we don't seem to receive
 924         // the notification from the control (i.e. TVN_SELCHANG{ED|ING}), so
 925         // send them ourselves
 926
 927         wxTreeEvent event(wxEVT_NULL, m_windowId);
 928         event.m_item = item;
 929         event.SetEventObject(this);
 930
 931         event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGING);
 932         if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 933         {
 934             if ( !TreeView_SelectItem(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) )
 935             {
 936                 wxLogLastError("TreeView_SelectItem");
 937             }
 938             else
 939             {
 940                 event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
 941                 (void)GetEventHandler()->ProcessEvent(event);
 942             }
 943         }
 944         //else: program vetoed the change
 945     }
 946 }
 947
 948 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
 949 {
 950     // no error return
 951     TreeView_EnsureVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item);
 952 }
 953
 954 void wxTreeCtrl::ScrollTo(const wxTreeItemId& item)
 955 {
 956     if ( !TreeView_SelectSetFirstVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) )
 957     {
 958         wxLogLastError("TreeView_SelectSetFirstVisible");
 959     }
 960 }
 961
 962 wxTextCtrl* wxTreeCtrl::GetEditControl() const
 963 {
 964     return m_textCtrl;
 965 }
 966
 967 void wxTreeCtrl::DeleteTextCtrl()
 968 {
 969     if ( m_textCtrl )
 970     {
 971         m_textCtrl->UnsubclassWin();
 972         m_textCtrl->SetHWND(0);
 973         delete m_textCtrl;
 974         m_textCtrl = NULL;
 975     }
 976 }
 977
 978 wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
 979                                   wxClassInfo* textControlClass)
 980 {
 981     wxASSERT( textControlClass->IsKindOf(CLASSINFO(wxTextCtrl)) );
 982
 983     HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item);
 984
 985     // this is not an error - the TVN_BEGINLABELEDIT handler might have
 986     // returned FALSE
 987     if ( !hWnd )
 988     {
 989         return NULL;
 990     }
 991
 992     DeleteTextCtrl();
 993
 994     m_textCtrl = (wxTextCtrl *)textControlClass->CreateObject();
 995     m_textCtrl->SetHWND((WXHWND)hWnd);
 996     m_textCtrl->SubclassWin((WXHWND)hWnd);
 997
 998     return m_textCtrl;
 999 }
1000
1001 // End label editing, optionally cancelling the edit
1002 void wxTreeCtrl::EndEditLabel(const wxTreeItemId& item, bool discardChanges)
1003 {
1004     TreeView_EndEditLabelNow(GetHwnd(), discardChanges);
1005
1006     DeleteTextCtrl();
1007 }
1008
1009 wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
1010 {
1011     TV_HITTESTINFO hitTestInfo;
1012     hitTestInfo.pt.x = (int)point.x;
1013     hitTestInfo.pt.y = (int)point.y;
1014
1015     TreeView_HitTest(GetHwnd(), &hitTestInfo);
1016
1017     flags = 0;
1018
1019     // avoid repetition
1020     #define TRANSLATE_FLAG(flag) if ( hitTestInfo.flags & TVHT_##flag ) \
1021                                     flags |= wxTREE_HITTEST_##flag
1022
1023     TRANSLATE_FLAG(ABOVE);
1024     TRANSLATE_FLAG(BELOW);
1025     TRANSLATE_FLAG(NOWHERE);
1026     TRANSLATE_FLAG(ONITEMBUTTON);
1027     TRANSLATE_FLAG(ONITEMICON);
1028     TRANSLATE_FLAG(ONITEMINDENT);
1029     TRANSLATE_FLAG(ONITEMLABEL);
1030     TRANSLATE_FLAG(ONITEMRIGHT);
1031     TRANSLATE_FLAG(ONITEMSTATEICON);
1032     TRANSLATE_FLAG(TOLEFT);
1033     TRANSLATE_FLAG(TORIGHT);
1034
1035     #undef TRANSLATE_FLAG
1036
1037     return wxTreeItemId((WXHTREEITEM) hitTestInfo.hItem);
1038 }
1039
1040 bool wxTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
1041                                  wxRect& rect,
1042                                  bool textOnly) const
1043 {
1044     RECT rc;
1045     if ( TreeView_GetItemRect(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item,
1046                               &rc, textOnly) )
1047     {
1048         rect = wxRect(wxPoint(rc.left, rc.top), wxPoint(rc.right, rc.bottom));
1049
1050         return TRUE;
1051     }
1052     else
1053     {
1054         // couldn't retrieve rect: for example, item isn't visible
1055         return FALSE;
1056     }
1057 }
1058
1059 // ----------------------------------------------------------------------------
1060 // sorting stuff
1061 // ----------------------------------------------------------------------------
1062
1063 static int CALLBACK TreeView_CompareCallback(wxTreeItemData *pItem1,
1064                                              wxTreeItemData *pItem2,
1065                                              wxTreeCtrl *tree)
1066 {
1067     wxCHECK_MSG( pItem1 && pItem2, 0,
1068                  _T("sorting tree without data doesn't make sense") );
1069
1070     return tree->OnCompareItems(pItem1->GetId(), pItem2->GetId());
1071 }
1072
1073 int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
1074                                const wxTreeItemId& item2)
1075 {
1076     return wxStrcmp(GetItemText(item1), GetItemText(item2));
1077 }
1078
1079 void wxTreeCtrl::SortChildren(const wxTreeItemId& item)
1080 {
1081     // rely on the fact that TreeView_SortChildren does the same thing as our
1082     // default behaviour, i.e. sorts items alphabetically and so call it
1083     // directly if we're not in derived class (much more efficient!)
1084     if ( GetClassInfo() == CLASSINFO(wxTreeCtrl) )
1085     {
1086         TreeView_SortChildren(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item, 0);
1087     }
1088     else
1089     {
1090         TV_SORTCB tvSort;
1091         tvSort.hParent = (HTREEITEM)(WXHTREEITEM)item;
1092         tvSort.lpfnCompare = (PFNTVCOMPARE)TreeView_CompareCallback;
1093         tvSort.lParam = (LPARAM)this;
1094         TreeView_SortChildrenCB(GetHwnd(), &tvSort, 0 /* reserved */);
1095     }
1096 }
1097
1098 // ----------------------------------------------------------------------------
1099 // implementation
1100 // ----------------------------------------------------------------------------
1101
1102 bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
1103 {
1104     if ( cmd == EN_UPDATE )
1105     {
1106         wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id);
1107         event.SetEventObject( this );
1108         ProcessCommand(event);
1109     }
1110     else if ( cmd == EN_KILLFOCUS )
1111     {
1112         wxCommandEvent event(wxEVT_KILL_FOCUS, id);
1113         event.SetEventObject( this );
1114         ProcessCommand(event);
1115     }
1116     else
1117     {
1118         // nothing done
1119         return FALSE;
1120     }
1121
1122     // command processed
1123     return TRUE;
1124 }
1125
1126 // process WM_NOTIFY Windows message
1127 bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1128 {
1129     wxTreeEvent event(wxEVT_NULL, m_windowId);
1130     wxEventType eventType = wxEVT_NULL;
1131     NMHDR *hdr = (NMHDR *)lParam;
1132
1133     switch ( hdr->code )
1134     {
1135         case TVN_BEGINDRAG:
1136             eventType = wxEVT_COMMAND_TREE_BEGIN_DRAG;
1137             // fall through
1138
1139         case TVN_BEGINRDRAG:
1140             {
1141                 if ( eventType == wxEVT_NULL )
1142                     eventType = wxEVT_COMMAND_TREE_BEGIN_RDRAG;
1143                 //else: left drag, already set above
1144
1145                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
1146
1147                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
1148                 event.m_pointDrag = wxPoint(tv->ptDrag.x, tv->ptDrag.y);
1149                 break;
1150             }
1151
1152         case TVN_BEGINLABELEDIT:
1153             {
1154                 eventType = wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT;
1155                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
1156
1157                 event.m_item = (WXHTREEITEM) info->item.hItem;
1158                 event.m_label = info->item.pszText;
1159                 break;
1160             }
1161
1162         case TVN_DELETEITEM:
1163             {
1164                 eventType = wxEVT_COMMAND_TREE_DELETE_ITEM;
1165                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
1166
1167                 event.m_item = (WXHTREEITEM) tv->itemOld.hItem;
1168                 break;
1169             }
1170
1171         case TVN_ENDLABELEDIT:
1172             {
1173                 eventType = wxEVT_COMMAND_TREE_END_LABEL_EDIT;
1174                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
1175
1176                 event.m_item = (WXHTREEITEM)info->item.hItem;
1177                 event.m_label = info->item.pszText;
1178                 break;
1179             }
1180
1181         case TVN_GETDISPINFO:
1182             eventType = wxEVT_COMMAND_TREE_GET_INFO;
1183             // fall through
1184
1185         case TVN_SETDISPINFO:
1186             {
1187                 if ( eventType == wxEVT_NULL )
1188                     eventType = wxEVT_COMMAND_TREE_SET_INFO;
1189                 //else: get, already set above
1190
1191                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
1192
1193                 event.m_item = (WXHTREEITEM) info->item.hItem;
1194                 break;
1195             }
1196
1197         case TVN_ITEMEXPANDING:
1198             event.m_code = FALSE;
1199             // fall through
1200
1201         case TVN_ITEMEXPANDED:
1202             {
1203                 NM_TREEVIEW* tv = (NM_TREEVIEW*)lParam;
1204
1205                 bool expand = FALSE;
1206                 switch ( tv->action )
1207                 {
1208                     case TVE_EXPAND:
1209                         expand = TRUE;
1210                         break;
1211
1212                     case TVE_COLLAPSE:
1213                         expand = FALSE;
1214                         break;
1215
1216                     default:
1217                         wxLogDebug(_T("unexpected code %d in TVN_ITEMEXPAND "
1218                                       "message"), tv->action);
1219                 }
1220
1221                 bool ing = (hdr->code == TVN_ITEMEXPANDING);
1222                 eventType = g_events[expand][ing];
1223
1224                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
1225                 break;
1226             }
1227
1228         case TVN_KEYDOWN:
1229             {
1230                 eventType = wxEVT_COMMAND_TREE_KEY_DOWN;
1231                 TV_KEYDOWN *info = (TV_KEYDOWN *)lParam;
1232
1233                 event.m_code = wxCharCodeMSWToWX(info->wVKey);
1234
1235                 // a separate event for this case
1236                 if ( info->wVKey == VK_SPACE || info->wVKey == VK_RETURN )
1237                 {
1238                     wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED,
1239                                        m_windowId);
1240                     event2.SetEventObject(this);
1241
1242                     GetEventHandler()->ProcessEvent(event2);
1243                 }
1244                 break;
1245             }
1246
1247         case TVN_SELCHANGED:
1248             eventType = wxEVT_COMMAND_TREE_SEL_CHANGED;
1249             // fall through
1250
1251         case TVN_SELCHANGING:
1252             {
1253                 if ( eventType == wxEVT_NULL )
1254                     eventType = wxEVT_COMMAND_TREE_SEL_CHANGING;
1255                 //else: already set above
1256
1257                 NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
1258
1259                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
1260                 event.m_itemOld = (WXHTREEITEM) tv->itemOld.hItem;
1261                 break;
1262             }
1263
1264         default:
1265             return wxControl::MSWOnNotify(idCtrl, lParam, result);
1266     }
1267
1268     event.SetEventObject(this);
1269     event.SetEventType(eventType);
1270
1271     bool processed = GetEventHandler()->ProcessEvent(event);
1272
1273     // post processing
1274     switch ( hdr->code )
1275     {
1276         case TVN_DELETEITEM:
1277             {
1278                 // NB: we might process this message using wxWindows event
1279                 //     tables, but due to overhead of wxWin event system we
1280                 //     prefer to do it here ourself (otherwise deleting a tree
1281                 //     with many items is just too slow)
1282                 NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
1283                 wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam;
1284                 delete data; // may be NULL, ok
1285
1286                 processed = TRUE; // Make sure we don't get called twice
1287             }
1288             break;
1289
1290         case TVN_BEGINLABELEDIT:
1291             // return TRUE to cancel label editing
1292             *result = !event.IsAllowed();
1293             break;
1294
1295         case TVN_ENDLABELEDIT:
1296             // return TRUE to set the label to the new string
1297             *result = event.IsAllowed();
1298
1299             // ensure that we don't have the text ctrl which is going to be
1300             // deleted any more
1301             DeleteTextCtrl();
1302             break;
1303
1304         case TVN_SELCHANGING:
1305         case TVN_ITEMEXPANDING:
1306             // return TRUE to prevent the action from happening
1307             *result = !event.IsAllowed();
1308             break;
1309
1310         //default:
1311             // for the other messages the return value is ignored and there is
1312             // nothing special to do
1313     }
1314
1315     return processed;
1316 }
1317
1318 // ----------------------------------------------------------------------------
1319 // Tree event
1320 // ----------------------------------------------------------------------------
1321
1322 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent)
1323
1324 wxTreeEvent::wxTreeEvent(wxEventType commandType, int id)
1325            : wxNotifyEvent(commandType, id)
1326 {
1327     m_code = 0;
1328     m_itemOld = 0;
1329 }
1330
1331 #endif // __WIN95__
1332