src/os2/listbox.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        listbox.cpp
   3 // Purpose:     wxListBox
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/09/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/window.h"
  16 #include "wx/os2/private.h"
  17
  18 #ifndef WX_PRECOMP
  19 #include "wx/listbox.h"
  20 #include "wx/settings.h"
  21 #include "wx/brush.h"
  22 #include "wx/font.h"
  23 #include "wx/dc.h"
  24 #include "wx/utils.h"
  25 #endif
  26
  27 #define INCL_M
  28 #include <os2.h>
  29
  30 #include "wx/dynarray.h"
  31 #include "wx/log.h"
  32
  33 #if wxUSE_LISTBOX
  34
  35 #if wxUSE_OWNER_DRAWN
  36     #include  "wx/ownerdrw.h"
  37 #endif
  38
  39   IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
  40
  41 // ============================================================================
  42 // list box item declaration and implementation
  43 // ============================================================================
  44
  45 #if wxUSE_OWNER_DRAWN
  46
  47 class wxListBoxItem : public wxOwnerDrawn
  48 {
  49 public:
  50     wxListBoxItem(const wxString& str = "");
  51 };
  52
  53 wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
  54 {
  55     // no bitmaps/checkmarks
  56     SetMarginWidth(0);
  57 }
  58
  59 wxOwnerDrawn *wxListBox::CreateItem(size_t n)
  60 {
  61     return new wxListBoxItem();
  62 }
  63
  64 #endif  //USE_OWNER_DRAWN
  65
  66 // ============================================================================
  67 // list box control implementation
  68 // ============================================================================
  69
  70 // Listbox item
  71 wxListBox::wxListBox()
  72 {
  73     m_noItems = 0;
  74     m_selected = 0;
  75 }
  76
  77 bool wxListBox::Create(wxWindow *parent,
  78                        wxWindowID id,
  79                        const wxPoint& pos,
  80                        const wxSize& size,
  81                        int n, const wxString choices[],
  82                        long style,
  83 #if wxUSE_VALIDATORS
  84                        const wxValidator& validator,
  85 #endif
  86                        const wxString& name)
  87 {
  88     m_noItems = 0;
  89     m_hWnd = 0;
  90     m_selected = 0;
  91
  92     SetName(name);
  93 #if wxUSE_VALIDATORS
  94     SetValidator(validator);
  95 #endif
  96
  97     if (parent)
  98         parent->AddChild(this);
  99
 100     wxSystemSettings settings;
 101     SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
 102     SetForegroundColour(parent->GetForegroundColour());
 103
 104     m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
 105
 106     int x = pos.x;
 107     int y = pos.y;
 108     int width = size.x;
 109     int height = size.y;
 110     m_windowStyle = style;
 111
 112 // TODO:
 113 /*
 114     DWORD wstyle = WS_VISIBLE | WS_VSCROLL | WS_TABSTOP |
 115                    LBS_NOTIFY | LBS_HASSTRINGS;
 116     if (m_windowStyle & wxLB_MULTIPLE)
 117         wstyle |= LBS_MULTIPLESEL;
 118     else if (m_windowStyle & wxLB_EXTENDED)
 119         wstyle |= LBS_EXTENDEDSEL;
 120
 121     if (m_windowStyle & wxLB_ALWAYS_SB)
 122         wstyle |= LBS_DISABLENOSCROLL;
 123     if (m_windowStyle & wxLB_HSCROLL)
 124         wstyle |= WS_HSCROLL;
 125     if (m_windowStyle & wxLB_SORT)
 126         wstyle |= LBS_SORT;
 127
 128 #if wxUSE_OWNER_DRAWN
 129     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 130         // we don't support LBS_OWNERDRAWVARIABLE yet
 131         wstyle |= LBS_OWNERDRAWFIXED;
 132     }
 133 #endif
 134
 135     // Without this style, you get unexpected heights, so e.g. constraint layout
 136     // doesn't work properly
 137     wstyle |= LBS_NOINTEGRALHEIGHT;
 138
 139     bool want3D;
 140     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 141
 142     // Even with extended styles, need to combine with WS_BORDER for them to
 143     // look right.
 144     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 145     {
 146         wstyle |= WS_BORDER;
 147     }
 148
 149     m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("LISTBOX"), NULL,
 150             wstyle | WS_CHILD,
 151             0, 0, 0, 0,
 152             (HWND)parent->GetHWND(), (HMENU)m_windowId,
 153             wxGetInstance(), NULL);
 154
 155     wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create listbox") );
 156
 157     // Subclass again to catch messages
 158     SubclassWin(m_hWnd);
 159
 160     size_t ui;
 161     for (ui = 0; ui < (size_t)n; ui++) {
 162         Append(choices[ui]);
 163     }
 164
 165     if ( (m_windowStyle & wxLB_MULTIPLE) == 0 )
 166         SendMessage(GetHwnd(), LB_SETCURSEL, 0, 0);
 167 */
 168     SetFont(parent->GetFont());
 169
 170     SetSize(x, y, width, height);
 171
 172     Show(TRUE);
 173
 174     return TRUE;
 175 }
 176
 177 wxListBox::~wxListBox()
 178 {
 179 #if wxUSE_OWNER_DRAWN
 180     size_t uiCount = m_aItems.Count();
 181     while ( uiCount-- != 0 ) {
 182         delete m_aItems[uiCount];
 183     }
 184 #endif // wxUSE_OWNER_DRAWN
 185 }
 186
 187 void wxListBox::SetupColours()
 188 {
 189     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
 190     SetForegroundColour(GetParent()->GetForegroundColour());
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // implementation of wxListBoxBase methods
 195 // ----------------------------------------------------------------------------
 196
 197 void wxListBox::DoSetFirstItem(int N)
 198 {
 199     wxCHECK_RET( N >= 0 && N < m_noItems,
 200                  wxT("invalid index in wxListBox::SetFirstItem") );
 201
 202 //    SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0);
 203 }
 204
 205 void wxListBox::Delete(int N)
 206 {
 207     wxCHECK_RET( N >= 0 && N < m_noItems,
 208                  wxT("invalid index in wxListBox::Delete") );
 209
 210 #if wxUSE_OWNER_DRAWN
 211     delete m_aItems[N];
 212     m_aItems.RemoveAt(N);
 213 #else // !wxUSE_OWNER_DRAWN
 214     if ( HasClientObjectData() )
 215     {
 216         delete GetClientObject(N);
 217     }
 218 #endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
 219
 220 //    SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
 221     m_noItems--;
 222
 223     SetHorizontalExtent("");
 224 }
 225
 226 int wxListBox::DoAppend(const wxString& item)
 227 {
 228 // TODO:
 229 /*
 230     int index = ListBox_AddString(GetHwnd(), item);
 231     m_noItems++;
 232
 233 #if wxUSE_OWNER_DRAWN
 234     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 235         wxOwnerDrawn *pNewItem = CreateItem(index); // dummy argument
 236         pNewItem->SetName(item);
 237         m_aItems.Add(pNewItem);
 238         ListBox_SetItemData(GetHwnd(), index, pNewItem);
 239     }
 240 #endif
 241
 242     SetHorizontalExtent(item);
 243
 244     return index;
 245 */
 246     return 0;
 247 }
 248
 249 void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
 250 {
 251 // TODO:
 252 /*
 253     ShowWindow(GetHwnd(), SW_HIDE);
 254
 255     ListBox_ResetContent(GetHwnd());
 256
 257     m_noItems = choices.GetCount();
 258     int i;
 259     for (i = 0; i < m_noItems; i++)
 260     {
 261         ListBox_AddString(GetHwnd(), choices[i]);
 262         if ( clientData )
 263         {
 264 #if wxUSE_OWNER_DRAWN
 265             wxASSERT_MSG(clientData[ui] == NULL,
 266                          wxT("Can't use client data with owner-drawn listboxes"));
 267 #else // !wxUSE_OWNER_DRAWN
 268             ListBox_SetItemData(GetHwnd(), i, clientData[i]);
 269 #endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
 270         }
 271     }
 272
 273 #if wxUSE_OWNER_DRAWN
 274     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 275         // first delete old items
 276         size_t ui = m_aItems.Count();
 277         while ( ui-- != 0 ) {
 278             delete m_aItems[ui];
 279         }
 280         m_aItems.Empty();
 281
 282         // then create new ones
 283         for ( ui = 0; ui < (size_t)m_noItems; ui++ ) {
 284             wxOwnerDrawn *pNewItem = CreateItem(ui);
 285             pNewItem->SetName(choices[ui]);
 286             m_aItems.Add(pNewItem);
 287             ListBox_SetItemData(GetHwnd(), ui, pNewItem);
 288         }
 289     }
 290 #endif // wxUSE_OWNER_DRAWN
 291
 292     SetHorizontalExtent();
 293
 294     ShowWindow(GetHwnd(), SW_SHOW);
 295 */
 296 }
 297
 298 int wxListBox::FindString(const wxString& s) const
 299 {
 300 // TODO:
 301 /*
 302     int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-1, s);
 303     if (pos == LB_ERR)
 304         return wxNOT_FOUND;
 305     else
 306         return pos;
 307 */
 308     return 0;
 309 }
 310
 311 void wxListBox::Clear()
 312 {
 313 #if wxUSE_OWNER_DRAWN
 314     size_t uiCount = m_aItems.Count();
 315     while ( uiCount-- != 0 ) {
 316         delete m_aItems[uiCount];
 317     }
 318
 319     m_aItems.Clear();
 320 #else // !wxUSE_OWNER_DRAWN
 321     if ( HasClientObjectData() )
 322     {
 323         for ( size_t n = 0; n < (size_t)m_noItems; n++ )
 324         {
 325             delete GetClientObject(n);
 326         }
 327     }
 328 #endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
 329 // TODO:
 330 /*
 331
 332     ListBox_ResetContent(GetHwnd());
 333
 334     m_noItems = 0;
 335     SetHorizontalExtent();
 336 */
 337 }
 338
 339 void wxListBox::SetSelection(int N, bool select)
 340 {
 341     wxCHECK_RET( N >= 0 && N < m_noItems,
 342                  wxT("invalid index in wxListBox::SetSelection") );
 343 // TODO:
 344 /*
 345
 346     if ( HasMultipleSelection() )
 347     {
 348         SendMessage(GetHwnd(), LB_SETSEL, select, N);
 349     }
 350     else
 351     {
 352         SendMessage(GetHwnd(), LB_SETCURSEL, select ? N : -1, 0);
 353     }
 354 */
 355 }
 356
 357 bool wxListBox::IsSelected(int N) const
 358 {
 359     wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
 360                  wxT("invalid index in wxListBox::Selected") );
 361
 362 //    return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
 363     return FALSE;
 364 }
 365
 366 wxClientData* wxListBox::DoGetItemClientObject(int n) const
 367 {
 368     return (wxClientData *)DoGetItemClientData(n);
 369 }
 370
 371 void *wxListBox::DoGetItemClientData(int n) const
 372 {
 373     wxCHECK_MSG( n >= 0 && n < m_noItems, NULL,
 374                  wxT("invalid index in wxListBox::GetClientData") );
 375
 376 //    return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 377     return NULL;
 378 }
 379
 380 void wxListBox::DoSetItemClientObject(int n, wxClientData* clientData)
 381 {
 382     DoSetItemClientData(n, clientData);
 383 }
 384
 385 void wxListBox::DoSetItemClientData(int n, void *clientData)
 386 {
 387     wxCHECK_RET( n >= 0 && n < m_noItems,
 388                  wxT("invalid index in wxListBox::SetClientData") );
 389
 390 #if wxUSE_OWNER_DRAWN
 391     if ( m_windowStyle & wxLB_OWNERDRAW )
 392     {
 393         // client data must be pointer to wxOwnerDrawn, otherwise we would crash
 394         // in OnMeasure/OnDraw.
 395         wxFAIL_MSG(wxT("Can't use client data with owner-drawn listboxes"));
 396     }
 397 #endif // wxUSE_OWNER_DRAWN
 398
 399 // TODO:
 400 /*
 401     if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR )
 402         wxLogDebug(wxT("LB_SETITEMDATA failed"));
 403 */
 404 }
 405
 406 bool wxListBox::HasMultipleSelection() const
 407 {
 408     return (m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED);
 409 }
 410
 411 // Return number of selections and an array of selected integers
 412 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 413 {
 414     aSelections.Empty();
 415
 416 // TODO:
 417 /*
 418     if ( HasMultipleSelection() )
 419     {
 420         int no_sel = ListBox_GetSelCount(GetHwnd());
 421         if (no_sel != 0) {
 422             int *selections = new int[no_sel];
 423             int rc = ListBox_GetSelItems(GetHwnd(), no_sel, selections);
 424
 425             wxCHECK_MSG(rc != LB_ERR, -1, wxT("ListBox_GetSelItems failed"));
 426
 427             aSelections.Alloc(no_sel);
 428             for ( int n = 0; n < no_sel; n++ )
 429                 aSelections.Add(selections[n]);
 430
 431             delete [] selections;
 432         }
 433
 434         return no_sel;
 435     }
 436     else  // single-selection listbox
 437     {
 438         aSelections.Add(ListBox_GetCurSel(GetHwnd()));
 439
 440         return 1;
 441     }
 442 */
 443     return 0;
 444 }
 445
 446 // Get single selection, for single choice list items
 447 int wxListBox::GetSelection() const
 448 {
 449     wxCHECK_MSG( !HasMultipleSelection(),
 450                  -1,
 451                  wxT("GetSelection() can't be used with multiple-selection "
 452                     "listboxes, use GetSelections() instead.") );
 453
 454 //    return ListBox_GetCurSel(GetHwnd());
 455     return 0;
 456 }
 457
 458 // Find string for position
 459 wxString wxListBox::GetString(int N) const
 460 {
 461     wxCHECK_MSG( N >= 0 && N < m_noItems, "",
 462                  wxT("invalid index in wxListBox::GetClientData") );
 463
 464 // TODO:
 465 /*
 466     int len = ListBox_GetTextLen(GetHwnd(), N);
 467
 468     // +1 for terminating NUL
 469     wxString result;
 470     ListBox_GetText(GetHwnd(), N, result.GetWriteBuf(len + 1));
 471     result.UngetWriteBuf();
 472
 473     return result;
 474 */
 475     return((wxString)"");
 476 }
 477
 478 void
 479 wxListBox::DoInsertItems(const wxArrayString& items, int pos)
 480 {
 481     wxCHECK_RET( pos >= 0 && pos <= m_noItems,
 482                  wxT("invalid index in wxListBox::InsertItems") );
 483
 484 // TODO:
 485 /*
 486     int nItems = items.GetCount();
 487     for ( int i = 0; i < nItems; i++ )
 488         ListBox_InsertString(GetHwnd(), i + pos, items[i]);
 489     m_noItems += nItems;
 490
 491     SetHorizontalExtent();
 492 */
 493 }
 494
 495 void wxListBox::SetString(int N, const wxString& s)
 496 {
 497     wxCHECK_RET( N >= 0 && N < m_noItems,
 498                  wxT("invalid index in wxListBox::SetString") );
 499
 500     // remember the state of the item
 501     bool wasSelected = IsSelected(N);
 502
 503     void *oldData = NULL;
 504     wxClientData *oldObjData = NULL;
 505     if ( m_clientDataItemsType == wxClientData_Void )
 506         oldData = GetClientData(N);
 507     else if ( m_clientDataItemsType == wxClientData_Object )
 508         oldObjData = GetClientObject(N);
 509 // TODO:
 510 /*
 511
 512     // delete and recreate it
 513     SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
 514
 515     int newN = N;
 516     if ( N == m_noItems - 1 )
 517         newN = -1;
 518
 519     ListBox_InsertString(GetHwnd(), newN, s);
 520
 521     // restore the client data
 522     if ( oldData )
 523         SetClientData(N, oldData);
 524     else if ( oldObjData )
 525         SetClientObject(N, oldObjData);
 526
 527     // we may have lost the selection
 528     if ( wasSelected )
 529         Select(N);
 530
 531 #if wxUSE_OWNER_DRAWN
 532     if ( m_windowStyle & wxLB_OWNERDRAW )
 533         // update item's text
 534         m_aItems[N]->SetName(s);
 535 #endif  //USE_OWNER_DRAWN
 536 */
 537 }
 538
 539 int wxListBox::GetCount() const
 540 {
 541     return m_noItems;
 542 }
 543
 544 // ----------------------------------------------------------------------------
 545 // helpers
 546 // ----------------------------------------------------------------------------
 547
 548 // Windows-specific code to set the horizontal extent of the listbox, if
 549 // necessary. If s is non-NULL, it's used to calculate the horizontal extent.
 550 // Otherwise, all strings are used.
 551 void wxListBox::SetHorizontalExtent(const wxString& s)
 552 {
 553 // TODO:
 554 /*
 555     // Only necessary if we want a horizontal scrollbar
 556     if (!(m_windowStyle & wxHSCROLL))
 557         return;
 558     TEXTMETRIC lpTextMetric;
 559
 560     if ( !s.IsEmpty() )
 561     {
 562         int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L);
 563         HDC dc = GetWindowDC(GetHwnd());
 564         HFONT oldFont = 0;
 565         if (GetFont().Ok() && GetFont().GetResourceHandle())
 566             oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
 567
 568         GetTextMetrics(dc, &lpTextMetric);
 569         SIZE extentXY;
 570         ::GetTextExtentPoint(dc, (LPTSTR) (const wxChar *)s, s.Length(), &extentXY);
 571         int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
 572
 573         if (oldFont)
 574             ::SelectObject(dc, oldFont);
 575
 576         ReleaseDC(GetHwnd(), dc);
 577         if (extentX > existingExtent)
 578             SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
 579     }
 580     else
 581     {
 582         int largestExtent = 0;
 583         HDC dc = GetWindowDC(GetHwnd());
 584         HFONT oldFont = 0;
 585         if (GetFont().Ok() && GetFont().GetResourceHandle())
 586             oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
 587
 588         GetTextMetrics(dc, &lpTextMetric);
 589         int i;
 590         for (i = 0; i < m_noItems; i++)
 591         {
 592             int len = (int)SendMessage(GetHwnd(), LB_GETTEXT, i, (LONG)wxBuffer);
 593             wxBuffer[len] = 0;
 594             SIZE extentXY;
 595             ::GetTextExtentPoint(dc, (LPTSTR)wxBuffer, len, &extentXY);
 596             int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
 597             if (extentX > largestExtent)
 598                 largestExtent = extentX;
 599         }
 600         if (oldFont)
 601             ::SelectObject(dc, oldFont);
 602
 603         ReleaseDC(GetHwnd(), dc);
 604         SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
 605     }
 606 */
 607 }
 608
 609 wxSize wxListBox::DoGetBestSize() const
 610 {
 611     // find the widest string
 612     int wLine;
 613     int wListbox = 0;
 614     for ( int i = 0; i < m_noItems; i++ )
 615     {
 616         wxString str(GetString(i));
 617         GetTextExtent(str, &wLine, NULL);
 618         if ( wLine > wListbox )
 619             wListbox = wLine;
 620     }
 621
 622     // give it some reasonable default value if there are no strings in the
 623     // list
 624     if ( wListbox == 0 )
 625         wListbox = 100;
 626
 627     // the listbox should be slightly larger than the widest string
 628     int cx, cy;
 629     wxGetCharSize(GetHWND(), &cx, &cy, (wxFont*)&GetFont());
 630
 631     wListbox += 3*cx;
 632
 633     int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*(wxMax(m_noItems, 7));
 634
 635     return wxSize(wListbox, hListbox);
 636 }
 637
 638 // ----------------------------------------------------------------------------
 639 // callbacks
 640 // ----------------------------------------------------------------------------
 641
 642 bool wxListBox::OS2Command(WXUINT param, WXWORD WXUNUSED(id))
 643 {
 644     /*
 645        if (param == LBN_SELCANCEL)
 646        {
 647        event.extraLong = FALSE;
 648        }
 649      */
 650 // TODO:
 651 /*
 652     if (param == LBN_SELCHANGE)
 653     {
 654         wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
 655         wxArrayInt aSelections;
 656         int count = GetSelections(aSelections);
 657         if ( count > 0 )
 658         {
 659             event.m_commandInt = aSelections[0];
 660             event.m_clientData = GetClientData(event.m_commandInt);
 661             wxString str(GetString(event.m_commandInt));
 662             if (str != wxT(""))
 663             {
 664                 event.m_commandString = str;
 665             }
 666         }
 667         else
 668         {
 669             event.m_commandInt = -1;
 670             event.m_commandString.Empty();
 671         }
 672
 673         event.SetEventObject( this );
 674         ProcessCommand(event);
 675         return TRUE;
 676     }
 677     else if (param == LBN_DBLCLK)
 678     {
 679         wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
 680         event.SetEventObject( this );
 681         GetEventHandler()->ProcessEvent(event);
 682         return TRUE;
 683     }
 684 */
 685     return FALSE;
 686 }
 687
 688 WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 689                                WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 690 {
 691 // TODO:
 692 /*
 693     if (GetParent()->GetTransparentBackground())
 694         SetBkMode((HDC) pDC, TRANSPARENT);
 695     else
 696         SetBkMode((HDC) pDC, OPAQUE);
 697
 698     ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 699     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 700
 701     wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 702
 703     // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 704     // has a zero usage count.
 705     backgroundBrush->RealizeResource();
 706     return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 707 */
 708     return (WXHBRUSH)0;
 709 }
 710
 711 // ----------------------------------------------------------------------------
 712 // wxCheckListBox support
 713 // ----------------------------------------------------------------------------
 714
 715 #if wxUSE_OWNER_DRAWN
 716
 717 // drawing
 718 // -------
 719
 720 // space beneath/above each row in pixels
 721 // "standard" checklistbox use 1 here, some might prefer 2. 0 is ugly.
 722 #define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
 723
 724 // the height is the same for all items
 725 // TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes
 726
 727 // NB: can't forward this to wxListBoxItem because LB_SETITEMDATA
 728 //     message is not yet sent when we get here!
 729 bool wxListBox::OS2OnMeasure(WXMEASUREITEMSTRUCT *item)
 730 {
 731 // TODO:
 732 /*
 733     // only owner-drawn control should receive this message
 734     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 735
 736     MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 737
 738     wxDC dc;
 739     dc.SetHDC((WXHDC)CreateIC(wxT("DISPLAY"), NULL, NULL, 0));
 740     dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
 741
 742     pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
 743     pStruct->itemWidth  = dc.GetCharWidth();
 744
 745     return TRUE;
 746 */
 747     return TRUE;
 748 }
 749
 750 // forward the message to the appropriate item
 751 bool wxListBox::OS2OnDraw(WXDRAWITEMSTRUCT *item)
 752 {
 753 // TODO:
 754 /*
 755     // only owner-drawn control should receive this message
 756     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 757
 758     DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
 759
 760     long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
 761
 762     wxCHECK( data && (data != LB_ERR), FALSE );
 763
 764     wxListBoxItem *pItem = (wxListBoxItem *)data;
 765
 766     wxDC dc;
 767     dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
 768     wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top),
 769             wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
 770
 771     return pItem->OnDrawItem(dc, rect,
 772             (wxOwnerDrawn::wxODAction)pStruct->itemAction,
 773             (wxOwnerDrawn::wxODStatus)pStruct->itemState);
 774 */
 775     return FALSE;
 776 }
 777 #endif
 778     // wxUSE_OWNER_DRAWN
 779
 780 #endif //wxUSE_LISTBOX