src/palmos/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/treectrl.cpp
   3 // Purpose:     wxTreeCtrl
   4 // Author:      William Osborne
   5 // Modified by:
   6 // Created:     10/13/04
   7 // RCS-ID:      $Id:
   8 // Copyright:   (c) William Osborne
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "treectrl.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TREECTRL
  32
  33 #include "wx/palmos/private.h"
  34
  35 // Set this to 1 to be _absolutely_ sure that repainting will work for all
  36 // comctl32.dll versions
  37 #define wxUSE_COMCTL32_SAFELY 0
  38
  39 #include "wx/app.h"
  40 #include "wx/log.h"
  41 #include "wx/dynarray.h"
  42 #include "wx/imaglist.h"
  43 #include "wx/settings.h"
  44 #include "wx/msw/treectrl.h"
  45 #include "wx/msw/dragimag.h"
  46
  47 #include "wx/palmos/wrapcctl.h"
  48
  49 // macros to hide the cast ugliness
  50 // --------------------------------
  51
  52 // ptr is the real item id, i.e. wxTreeItemId::m_pItem
  53 #define HITEM_PTR(ptr)     (HTREEITEM)(ptr)
  54
  55 // item here is a wxTreeItemId
  56 #define HITEM(item)     HITEM_PTR((item).m_pItem)
  57
  58 // the native control doesn't support multiple selections under MSW and we
  59 // have 2 ways to emulate them: either using TVS_CHECKBOXES style and let
  60 // checkboxes be the selection status (checked == selected) or by really
  61 // emulating everything, i.e. intercepting mouse and key events &c. The first
  62 // approach is much easier but doesn't work with comctl32.dll < 4.71 and also
  63 // looks quite ugly.
  64 #define wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE 0
  65
  66 // ----------------------------------------------------------------------------
  67 // private functions
  68 // ----------------------------------------------------------------------------
  69
  70 // ----------------------------------------------------------------------------
  71 // private classes
  72 // ----------------------------------------------------------------------------
  73
  74 // ----------------------------------------------------------------------------
  75 // wxWin macros
  76 // ----------------------------------------------------------------------------
  77
  78 #if wxUSE_EXTENDED_RTTI
  79 WX_DEFINE_FLAGS( wxTreeCtrlStyle )
  80
  81 wxBEGIN_FLAGS( wxTreeCtrlStyle )
  82     // new style border flags, we put them first to
  83     // use them for streaming out
  84     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  85     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  86     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  87     wxFLAGS_MEMBER(wxBORDER_RAISED)
  88     wxFLAGS_MEMBER(wxBORDER_STATIC)
  89     wxFLAGS_MEMBER(wxBORDER_NONE)
  90
  91     // old style border flags
  92     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  93     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  94     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  95     wxFLAGS_MEMBER(wxRAISED_BORDER)
  96     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  97     wxFLAGS_MEMBER(wxBORDER)
  98
  99     // standard window styles
 100     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 101     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 102     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 103     wxFLAGS_MEMBER(wxWANTS_CHARS)
 104     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 105     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 106     wxFLAGS_MEMBER(wxVSCROLL)
 107     wxFLAGS_MEMBER(wxHSCROLL)
 108
 109     wxFLAGS_MEMBER(wxTR_EDIT_LABELS)
 110     wxFLAGS_MEMBER(wxTR_NO_BUTTONS)
 111     wxFLAGS_MEMBER(wxTR_HAS_BUTTONS)
 112     wxFLAGS_MEMBER(wxTR_TWIST_BUTTONS)
 113     wxFLAGS_MEMBER(wxTR_NO_LINES)
 114     wxFLAGS_MEMBER(wxTR_FULL_ROW_HIGHLIGHT)
 115     wxFLAGS_MEMBER(wxTR_LINES_AT_ROOT)
 116     wxFLAGS_MEMBER(wxTR_HIDE_ROOT)
 117     wxFLAGS_MEMBER(wxTR_ROW_LINES)
 118     wxFLAGS_MEMBER(wxTR_HAS_VARIABLE_ROW_HEIGHT)
 119     wxFLAGS_MEMBER(wxTR_SINGLE)
 120     wxFLAGS_MEMBER(wxTR_MULTIPLE)
 121     wxFLAGS_MEMBER(wxTR_EXTENDED)
 122     wxFLAGS_MEMBER(wxTR_DEFAULT_STYLE)
 123
 124 wxEND_FLAGS( wxTreeCtrlStyle )
 125
 126 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTreeCtrl, wxControl,"wx/treectrl.h")
 127
 128 wxBEGIN_PROPERTIES_TABLE(wxTreeCtrl)
 129     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 130     wxEVENT_RANGE_PROPERTY( TreeEvent , wxEVT_COMMAND_TREE_BEGIN_DRAG , wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK , wxTreeEvent )
 131     wxPROPERTY_FLAGS( WindowStyle , wxTreeCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 132 wxEND_PROPERTIES_TABLE()
 133
 134 wxBEGIN_HANDLERS_TABLE(wxTreeCtrl)
 135 wxEND_HANDLERS_TABLE()
 136
 137 wxCONSTRUCTOR_5( wxTreeCtrl , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
 138 #else
 139 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl)
 140 #endif
 141
 142 // ----------------------------------------------------------------------------
 143 // constants
 144 // ----------------------------------------------------------------------------
 145
 146 // indices in gs_expandEvents table below
 147 enum
 148 {
 149     IDX_COLLAPSE,
 150     IDX_EXPAND,
 151     IDX_WHAT_MAX
 152 };
 153
 154 enum
 155 {
 156     IDX_DONE,
 157     IDX_DOING,
 158     IDX_HOW_MAX
 159 };
 160
 161 // handy table for sending events - it has to be initialized during run-time
 162 // now so can't be const any more
 163 static /* const */ wxEventType gs_expandEvents[IDX_WHAT_MAX][IDX_HOW_MAX];
 164
 165 /*
 166    but logically it's a const table with the following entries:
 167 =
 168 {
 169     { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, wxEVT_COMMAND_TREE_ITEM_COLLAPSING },
 170     { wxEVT_COMMAND_TREE_ITEM_EXPANDED,  wxEVT_COMMAND_TREE_ITEM_EXPANDING  }
 171 };
 172 */
 173
 174 // ============================================================================
 175 // implementation
 176 // ============================================================================
 177
 178 // ----------------------------------------------------------------------------
 179 // construction and destruction
 180 // ----------------------------------------------------------------------------
 181
 182 void wxTreeCtrl::Init()
 183 {
 184 }
 185
 186 bool wxTreeCtrl::Create(wxWindow *parent,
 187                         wxWindowID id,
 188                         const wxPoint& pos,
 189                         const wxSize& size,
 190                         long style,
 191                         const wxValidator& validator,
 192                         const wxString& name)
 193 {
 194     return false;
 195 }
 196
 197 wxTreeCtrl::~wxTreeCtrl()
 198 {
 199 }
 200
 201 // ----------------------------------------------------------------------------
 202 // accessors
 203 // ----------------------------------------------------------------------------
 204
 205 /* static */ wxVisualAttributes
 206 wxTreeCtrl::GetClassDefaultAttributes(wxWindowVariant variant)
 207 {
 208     wxVisualAttributes attrs;
 209
 210     return attrs;
 211 }
 212
 213
 214 // simple wrappers which add error checking in debug mode
 215
 216 bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
 217 {
 218     return false;
 219 }
 220
 221 void wxTreeCtrl::DoSetItem(wxTreeViewItem* tvItem)
 222 {
 223 }
 224
 225 size_t wxTreeCtrl::GetCount() const
 226 {
 227     return 0;
 228 }
 229
 230 unsigned int wxTreeCtrl::GetIndent() const
 231 {
 232     return 0;
 233 }
 234
 235 void wxTreeCtrl::SetIndent(unsigned int indent)
 236 {
 237 }
 238
 239 wxImageList *wxTreeCtrl::GetImageList() const
 240 {
 241     return m_imageListNormal;
 242 }
 243
 244 wxImageList *wxTreeCtrl::GetStateImageList() const
 245 {
 246     return m_imageListState;
 247 }
 248
 249 void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which)
 250 {
 251 }
 252
 253 void wxTreeCtrl::SetImageList(wxImageList *imageList)
 254 {
 255 }
 256
 257 void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
 258 {
 259 }
 260
 261 void wxTreeCtrl::AssignImageList(wxImageList *imageList)
 262 {
 263 }
 264
 265 void wxTreeCtrl::AssignStateImageList(wxImageList *imageList)
 266 {
 267 }
 268
 269 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
 270                                     bool recursively) const
 271 {
 272     return 0;
 273 }
 274
 275 // ----------------------------------------------------------------------------
 276 // control colours
 277 // ----------------------------------------------------------------------------
 278
 279 bool wxTreeCtrl::SetBackgroundColour(const wxColour &colour)
 280 {
 281     return false;
 282 }
 283
 284 bool wxTreeCtrl::SetForegroundColour(const wxColour &colour)
 285 {
 286     return false;
 287 }
 288
 289 // ----------------------------------------------------------------------------
 290 // Item access
 291 // ----------------------------------------------------------------------------
 292
 293 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 294 {
 295     return wxString;
 296 }
 297
 298 void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 299 {
 300 }
 301
 302 int wxTreeCtrl::DoGetItemImageFromData(const wxTreeItemId& item,
 303                                        wxTreeItemIcon which) const
 304 {
 305     return -1;
 306 }
 307
 308 void wxTreeCtrl::DoSetItemImageFromData(const wxTreeItemId& item,
 309                                         int image,
 310                                         wxTreeItemIcon which) const
 311 {
 312 }
 313
 314 void wxTreeCtrl::DoSetItemImages(const wxTreeItemId& item,
 315                                  int image,
 316                                  int imageSel)
 317 {
 318 }
 319
 320 int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
 321                              wxTreeItemIcon which) const
 322 {
 323     return -1;
 324 }
 325
 326 void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
 327                               wxTreeItemIcon which)
 328 {
 329 }
 330
 331 wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 332 {
 333     return NULL;
 334 }
 335
 336 void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 337 {
 338 }
 339
 340 void wxTreeCtrl::SetIndirectItemData(const wxTreeItemId& item,
 341                                      wxTreeItemIndirectData *data)
 342 {
 343 }
 344
 345 bool wxTreeCtrl::HasIndirectData(const wxTreeItemId& item) const
 346 {
 347     return false;
 348 }
 349
 350 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 351 {
 352 }
 353
 354 void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 355 {
 356 }
 357
 358 void wxTreeCtrl::SetItemDropHighlight(const wxTreeItemId& item, bool highlight)
 359 {
 360 }
 361
 362 void wxTreeCtrl::RefreshItem(const wxTreeItemId& item)
 363 {
 364 }
 365
 366 wxColour wxTreeCtrl::GetItemTextColour(const wxTreeItemId& item) const
 367 {
 368     return wxNullColour;
 369 }
 370
 371 wxColour wxTreeCtrl::GetItemBackgroundColour(const wxTreeItemId& item) const
 372 {
 373     return wxNullColour;
 374 }
 375
 376 wxFont wxTreeCtrl::GetItemFont(const wxTreeItemId& item) const
 377 {
 378     return wxNullFont;
 379 }
 380
 381 void wxTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
 382                                    const wxColour& col)
 383 {
 384 }
 385
 386 void wxTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
 387                                          const wxColour& col)
 388 {
 389 }
 390
 391 void wxTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 392 {
 393 }
 394
 395 // ----------------------------------------------------------------------------
 396 // Item status
 397 // ----------------------------------------------------------------------------
 398
 399 bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
 400 {
 401     return false;
 402 }
 403
 404 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 405 {
 406     return false;
 407 }
 408
 409 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 410 {
 411     return false;
 412 }
 413
 414 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 415 {
 416     return false;
 417 }
 418
 419 bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
 420 {
 421     return false;
 422 }
 423
 424 // ----------------------------------------------------------------------------
 425 // navigation
 426 // ----------------------------------------------------------------------------
 427
 428 wxTreeItemId wxTreeCtrl::GetRootItem() const
 429 {
 430     // Root may be real (visible) or virtual (hidden).
 431     if ( GET_VIRTUAL_ROOT() )
 432         return TVI_ROOT;
 433
 434     return wxTreeItemId(TreeView_GetRoot(GetHwnd()));
 435 }
 436
 437 wxTreeItemId wxTreeCtrl::GetSelection() const
 438 {
 439     return 0;
 440 }
 441
 442 wxTreeItemId wxTreeCtrl::GetItemParent(const wxTreeItemId& item) const
 443 {
 444     return 0;
 445 }
 446
 447 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
 448                                        wxTreeItemIdValue& cookie) const
 449 {
 450     return 0;
 451 }
 452
 453 wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
 454                                       wxTreeItemIdValue& cookie) const
 455 {
 456     return 0;
 457 }
 458
 459 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 460 {
 461     return 0;
 462 }
 463
 464 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
 465 {
 466     return 0;
 467 }
 468
 469 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
 470 {
 471     return 0;
 472 }
 473
 474 wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
 475 {
 476     return 0;
 477 }
 478
 479 wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
 480 {
 481     return 0;
 482 }
 483
 484 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 485 {
 486     return 0;
 487 }
 488
 489 // ----------------------------------------------------------------------------
 490 // multiple selections emulation
 491 // ----------------------------------------------------------------------------
 492
 493 bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const
 494 {
 495     return false;
 496 }
 497
 498 void wxTreeCtrl::SetItemCheck(const wxTreeItemId& item, bool check)
 499 {
 500 }
 501
 502 size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const
 503 {
 504     return 0;
 505 }
 506
 507 // ----------------------------------------------------------------------------
 508 // Usual operations
 509 // ----------------------------------------------------------------------------
 510
 511 wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
 512                                       wxTreeItemId hInsertAfter,
 513                                       const wxString& text,
 514                                       int image, int selectedImage,
 515                                       wxTreeItemData *data)
 516 {
 517     return 0;
 518 }
 519
 520 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
 521                                  int image, int selectedImage,
 522                                  wxTreeItemData *data)
 523 {
 524     return 0;
 525 }
 526
 527 wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
 528                                      const wxString& text,
 529                                      int image, int selectedImage,
 530                                      wxTreeItemData *data)
 531 {
 532     return 0;
 533 }
 534
 535 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 536                                     const wxTreeItemId& idPrevious,
 537                                     const wxString& text,
 538                                     int image, int selectedImage,
 539                                     wxTreeItemData *data)
 540 {
 541     return 0;
 542 }
 543
 544 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 545                                     size_t index,
 546                                     const wxString& text,
 547                                     int image, int selectedImage,
 548                                     wxTreeItemData *data)
 549 {
 550     return 0;
 551 }
 552
 553 wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parent,
 554                                     const wxString& text,
 555                                     int image, int selectedImage,
 556                                     wxTreeItemData *data)
 557 {
 558     return 0;
 559 }
 560
 561 void wxTreeCtrl::Delete(const wxTreeItemId& item)
 562 {
 563     return 0;
 564 }
 565
 566 // delete all children (but don't delete the item itself)
 567 void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
 568 {
 569 }
 570
 571 void wxTreeCtrl::DeleteAllItems()
 572 {
 573 }
 574
 575 void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
 576 {
 577 }
 578
 579 void wxTreeCtrl::Expand(const wxTreeItemId& item)
 580 {
 581 }
 582
 583 void wxTreeCtrl::Collapse(const wxTreeItemId& item)
 584 {
 585 }
 586
 587 void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
 588 {
 589 }
 590
 591 void wxTreeCtrl::Toggle(const wxTreeItemId& item)
 592 {
 593 }
 594
 595 void wxTreeCtrl::Unselect()
 596 {
 597 }
 598
 599 void wxTreeCtrl::UnselectAll()
 600 {
 601 }
 602
 603 void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select)
 604 {
 605 }
 606
 607 void wxTreeCtrl::UnselectItem(const wxTreeItemId& item)
 608 {
 609 }
 610
 611 void wxTreeCtrl::ToggleItemSelection(const wxTreeItemId& item)
 612 {
 613 }
 614
 615 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
 616 {
 617 }
 618
 619 void wxTreeCtrl::ScrollTo(const wxTreeItemId& item)
 620 {
 621 }
 622
 623 wxTextCtrl *wxTreeCtrl::GetEditControl() const
 624 {
 625     return NULL;
 626 }
 627
 628 void wxTreeCtrl::DeleteTextCtrl()
 629 {
 630 }
 631
 632 wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
 633                                   wxClassInfo* textControlClass)
 634 {
 635     return NULL;
 636 }
 637
 638 // End label editing, optionally cancelling the edit
 639 void wxTreeCtrl::EndEditLabel(const wxTreeItemId& WXUNUSED(item), bool discardChanges)
 640 {
 641 }
 642
 643 wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
 644 {
 645     return 0;
 646 }
 647
 648 bool wxTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
 649                                  wxRect& rect,
 650                                  bool textOnly) const
 651 {
 652     return false;
 653 }
 654
 655 // ----------------------------------------------------------------------------
 656 // sorting stuff
 657 // ----------------------------------------------------------------------------
 658
 659 // this is just a tiny namespace which is friend to wxTreeCtrl and so can use
 660 // functions such as IsDataIndirect()
 661 class wxTreeSortHelper
 662 {
 663 public:
 664     static int CALLBACK Compare(LPARAM data1, LPARAM data2, LPARAM tree);
 665
 666 private:
 667     static wxTreeItemId GetIdFromData(wxTreeCtrl *tree, LPARAM item)
 668     {
 669         wxTreeItemData *data = (wxTreeItemData *)item;
 670         if ( tree->IsDataIndirect(data) )
 671         {
 672             data = ((wxTreeItemIndirectData *)data)->GetData();
 673         }
 674
 675         return data->GetId();
 676     }
 677 };
 678
 679 int CALLBACK wxTreeSortHelper::Compare(LPARAM pItem1,
 680                                        LPARAM pItem2,
 681                                        LPARAM htree)
 682 {
 683     wxCHECK_MSG( pItem1 && pItem2, 0,
 684                  wxT("sorting tree without data doesn't make sense") );
 685
 686     wxTreeCtrl *tree = (wxTreeCtrl *)htree;
 687
 688     return tree->OnCompareItems(GetIdFromData(tree, pItem1),
 689                                 GetIdFromData(tree, pItem2));
 690 }
 691
 692 int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 693                                const wxTreeItemId& item2)
 694 {
 695     return wxStrcmp(GetItemText(item1), GetItemText(item2));
 696 }
 697
 698 void wxTreeCtrl::SortChildren(const wxTreeItemId& item)
 699 {
 700     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 701
 702     // rely on the fact that TreeView_SortChildren does the same thing as our
 703     // default behaviour, i.e. sorts items alphabetically and so call it
 704     // directly if we're not in derived class (much more efficient!)
 705     if ( GetClassInfo() == CLASSINFO(wxTreeCtrl) )
 706     {
 707         TreeView_SortChildren(GetHwnd(), HITEM(item), 0);
 708     }
 709     else
 710     {
 711         TV_SORTCB tvSort;
 712         tvSort.hParent = HITEM(item);
 713         tvSort.lpfnCompare = wxTreeSortHelper::Compare;
 714         tvSort.lParam = (LPARAM)this;
 715         TreeView_SortChildrenCB(GetHwnd(), &tvSort, 0 /* reserved */);
 716     }
 717 }
 718
 719 // ----------------------------------------------------------------------------
 720 // implementation
 721 // ----------------------------------------------------------------------------
 722
 723 bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
 724 {
 725     return false;
 726 }
 727
 728 WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 729 {
 730     return 0;
 731 }
 732
 733 // process WM_NOTIFY Windows message
 734 bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 735 {
 736     return false;
 737 }
 738
 739 // ----------------------------------------------------------------------------
 740 // State control.
 741 // ----------------------------------------------------------------------------
 742
 743 // why do they define INDEXTOSTATEIMAGEMASK but not the inverse?
 744 #define STATEIMAGEMASKTOINDEX(state) (((state) & TVIS_STATEIMAGEMASK) >> 12)
 745
 746 void wxTreeCtrl::SetState(const wxTreeItemId& node, int state)
 747 {
 748 }
 749
 750 int wxTreeCtrl::GetState(const wxTreeItemId& node)
 751 {
 752     return 0;
 753 }
 754
 755 #endif // wxUSE_TREECTRL
 756