src/os2/listbox.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/os2/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 #if wxUSE_LISTBOX
  16
  17 #include "wx/listbox.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/dynarray.h"
  21     #include "wx/settings.h"
  22     #include "wx/brush.h"
  23     #include "wx/font.h"
  24     #include "wx/dc.h"
  25     #include "wx/dcscreen.h"
  26     #include "wx/utils.h"
  27     #include "wx/scrolwin.h"
  28     #include "wx/log.h"
  29     #include "wx/window.h"
  30 #endif
  31
  32 #include "wx/os2/dcclient.h"
  33 #include "wx/os2/private.h"
  34
  35 #define INCL_M
  36 #include <os2.h>
  37
  38 #if wxUSE_OWNER_DRAWN
  39     #include  "wx/ownerdrw.h"
  40 #endif
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControlWithItems)
  43
  44 // ============================================================================
  45 // list box item declaration and implementation
  46 // ============================================================================
  47
  48 #if wxUSE_OWNER_DRAWN
  49
  50 class wxListBoxItem : public wxOwnerDrawn
  51 {
  52 public:
  53     wxListBoxItem(const wxString& rsStr = wxEmptyString);
  54 };
  55
  56 wxListBoxItem::wxListBoxItem(
  57   const wxString& rsStr
  58 )
  59 : wxOwnerDrawn( rsStr
  60                ,false
  61               )
  62 {
  63     //
  64     // No bitmaps/checkmarks
  65     //
  66     SetMarginWidth(0);
  67 } // end of wxListBoxItem::wxListBoxItem
  68
  69 wxOwnerDrawn* wxListBox::CreateItem( size_t WXUNUSED(n) )
  70 {
  71     return new wxListBoxItem();
  72 } // end of wxListBox::CreateItem
  73
  74 #endif  //USE_OWNER_DRAWN
  75
  76 // ============================================================================
  77 // list box control implementation
  78 // ============================================================================
  79
  80 // Listbox item
  81 wxListBox::wxListBox()
  82 {
  83     m_nNumItems = 0;
  84     m_nSelected = 0;
  85 } // end of wxListBox::wxListBox
  86
  87 bool wxListBox::Create(
  88   wxWindow*                         pParent
  89 , wxWindowID                        vId
  90 , const wxPoint&                    rPos
  91 , const wxSize&                     rSize
  92 , const wxArrayString&              asChoices
  93 , long                              lStyle
  94 , const wxValidator&                rValidator
  95 , const wxString&                   rsName
  96 )
  97 {
  98     wxCArrayString chs(asChoices);
  99
 100     return Create(pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
 101                   lStyle, rValidator, rsName);
 102 }
 103
 104 bool wxListBox::Create( wxWindow* pParent,
 105                         wxWindowID vId,
 106                         const wxPoint& rPos,
 107                         const wxSize& rSize,
 108                         int n,
 109                         const wxString asChoices[],
 110                         long lStyle,
 111                         const wxValidator& rValidator,
 112                         const wxString& rsName )
 113 {
 114     m_nNumItems = 0;
 115     m_hWnd      = 0;
 116     m_nSelected = 0;
 117
 118     SetName(rsName);
 119 #if wxUSE_VALIDATORS
 120     SetValidator(rValidator);
 121 #endif
 122
 123     if (pParent)
 124         pParent->AddChild(this);
 125
 126     wxSystemSettings                vSettings;
 127
 128     SetBackgroundColour(vSettings.GetColour(wxSYS_COLOUR_WINDOW));
 129     SetForegroundColour(pParent->GetForegroundColour());
 130
 131     m_windowId = (vId == -1) ? (int)NewControlId() : vId;
 132
 133     int                             nX      = rPos.x;
 134     int                             nY      = rPos.y;
 135     int                             nWidth  = rSize.x;
 136     int                             nHeight = rSize.y;
 137
 138     m_windowStyle = lStyle;
 139
 140     lStyle = WS_VISIBLE;
 141
 142     if (m_windowStyle & wxCLIP_SIBLINGS )
 143         lStyle |= WS_CLIPSIBLINGS;
 144     if (m_windowStyle & wxLB_MULTIPLE)
 145         lStyle |= LS_MULTIPLESEL;
 146     else if (m_windowStyle & wxLB_EXTENDED)
 147         lStyle |= LS_EXTENDEDSEL;
 148     if (m_windowStyle & wxLB_HSCROLL)
 149         lStyle |= LS_HORZSCROLL;
 150     if (m_windowStyle & wxLB_OWNERDRAW)
 151         lStyle |= LS_OWNERDRAW;
 152
 153     //
 154     // Without this style, you get unexpected heights, so e.g. constraint layout
 155     // doesn't work properly
 156     //
 157     lStyle |= LS_NOADJUSTPOS;
 158
 159     m_hWnd = (WXHWND)::WinCreateWindow( GetWinHwnd(pParent) // Parent
 160                                        ,WC_LISTBOX          // Default Listbox class
 161                                        ,"LISTBOX"           // Control's name
 162                                        ,lStyle              // Initial Style
 163                                        ,0, 0, 0, 0          // Position and size
 164                                        ,GetWinHwnd(pParent) // Owner
 165                                        ,HWND_TOP            // Z-Order
 166                                        ,(HMENU)m_windowId   // Id
 167                                        ,NULL                // Control Data
 168                                        ,NULL                // Presentation Parameters
 169                                       );
 170     if (m_hWnd == 0)
 171     {
 172         return false;
 173     }
 174
 175     //
 176     // Subclass again for purposes of dialog editing mode
 177     //
 178     SubclassWin(m_hWnd);
 179
 180     LONG                            lUi;
 181
 182     for (lUi = 0; lUi < (LONG)n; lUi++)
 183     {
 184         Append(asChoices[lUi]);
 185     }
 186     wxFont*                          pTextFont = new wxFont( 10
 187                                                             ,wxMODERN
 188                                                             ,wxNORMAL
 189                                                             ,wxNORMAL
 190                                                            );
 191     SetFont(*pTextFont);
 192
 193     //
 194     // Set OS/2 system colours for Listbox items and highlighting
 195     //
 196     wxColour                        vColour;
 197
 198     vColour = wxSystemSettingsNative::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 199
 200     LONG                            lColor = (LONG)vColour.GetPixel();
 201
 202     ::WinSetPresParam( m_hWnd
 203                       ,PP_HILITEFOREGROUNDCOLOR
 204                       ,sizeof(LONG)
 205                       ,(PVOID)&lColor
 206                      );
 207     vColour = wxSystemSettingsNative::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 208     lColor = (LONG)vColour.GetPixel();
 209     ::WinSetPresParam( m_hWnd
 210                       ,PP_HILITEBACKGROUNDCOLOR
 211                       ,sizeof(LONG)
 212                       ,(PVOID)&lColor
 213                      );
 214
 215     SetXComp(0);
 216     SetYComp(0);
 217     SetSize( nX
 218             ,nY
 219             ,nWidth
 220             ,nHeight
 221            );
 222     delete pTextFont;
 223     return true;
 224 } // end of wxListBox::Create
 225
 226 wxListBox::~wxListBox()
 227 {
 228 #if wxUSE_OWNER_DRAWN
 229     size_t lUiCount = m_aItems.Count();
 230
 231     while (lUiCount-- != 0)
 232     {
 233         delete m_aItems[lUiCount];
 234     }
 235 #endif // wxUSE_OWNER_DRAWN
 236 } // end of wxListBox::~wxListBox
 237
 238 void wxListBox::SetupColours()
 239 {
 240     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 241     SetForegroundColour(GetParent()->GetForegroundColour());
 242 } // end of wxListBox::SetupColours
 243
 244 // ----------------------------------------------------------------------------
 245 // implementation of wxListBoxBase methods
 246 // ----------------------------------------------------------------------------
 247
 248 void wxListBox::DoSetFirstItem(int N)
 249 {
 250     wxCHECK_RET( IsValid(N),
 251                  wxT("invalid index in wxListBox::SetFirstItem") );
 252
 253     ::WinSendMsg(GetHwnd(), LM_SETTOPINDEX, MPFROMLONG(N), (MPARAM)0);
 254 } // end of wxListBox::DoSetFirstItem
 255
 256 void wxListBox::DoDeleteOneItem(unsigned int n)
 257 {
 258     wxCHECK_RET( IsValid(n),
 259                  wxT("invalid index in wxListBox::Delete") );
 260
 261 #if wxUSE_OWNER_DRAWN
 262     delete m_aItems[n];
 263     m_aItems.RemoveAt(n);
 264 #endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
 265
 266     ::WinSendMsg(GetHwnd(), LM_DELETEITEM, (MPARAM)n, (MPARAM)0);
 267     m_nNumItems--;
 268 } // end of wxListBox::DoSetFirstItem
 269
 270 int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items,
 271                              unsigned int pos,
 272                              void **clientData,
 273                              wxClientDataType type)
 274 {
 275     long lIndex = 0;
 276     LONG lIndexType = 0;
 277     bool incrementPos = false;
 278
 279     if (IsSorted())
 280         lIndexType = LIT_SORTASCENDING;
 281     else if (pos == GetCount())
 282         lIndexType = LIT_END;
 283     else
 284     {
 285         lIndexType = (LONG)pos;
 286         incrementPos = true;
 287     }
 288
 289     int n = wxNOT_FOUND;
 290
 291     unsigned int count = items.GetCount();
 292     for (unsigned int i = 0; i < count; i++)
 293     {
 294         n = (int)::WinSendMsg(GetHwnd(), LM_INSERTITEM, (MPARAM)lIndexType, (MPARAM)items[i].wx_str());
 295         if (n < 0)
 296         {
 297             wxLogLastError(wxT("WinSendMsg(LM_INSERTITEM)"));
 298             n = wxNOT_FOUND;
 299             break;
 300         }
 301         ++m_nNumItems;
 302
 303 #if wxUSE_OWNER_DRAWN
 304         if (HasFlag(wxLB_OWNERDRAW))
 305         {
 306             wxOwnerDrawn*               pNewItem = CreateItem(n); // dummy argument
 307             wxScreenDC                  vDc; // FIXME: is it really needed here?
 308
 309             pNewItem->SetName(items[i]);
 310             m_aItems.Insert(pNewItem, n);
 311             pNewItem->SetFont(GetFont());
 312         }
 313 #endif
 314         AssignNewItemClientData(n, clientData, i, type);
 315
 316         if (incrementPos)
 317             ++lIndexType;
 318     }
 319
 320     return n;
 321 } // end of wxListBox::DoInsertAppendItemsWithData
 322
 323 void wxListBox::DoClear()
 324 {
 325 #if wxUSE_OWNER_DRAWN
 326     unsigned int lUiCount = m_aItems.Count();
 327
 328     while (lUiCount-- != 0)
 329     {
 330         delete m_aItems[lUiCount];
 331     }
 332
 333     m_aItems.Clear();
 334 #endif // wxUSE_OWNER_DRAWN
 335     ::WinSendMsg(GetHwnd(), LM_DELETEALL, (MPARAM)0, (MPARAM)0);
 336
 337     m_nNumItems = 0;
 338 } // end of wxListBox::Clear
 339
 340 void wxListBox::DoSetSelection( int N, bool bSelect)
 341 {
 342     wxCHECK_RET( IsValid(N),
 343                  wxT("invalid index in wxListBox::SetSelection") );
 344     ::WinSendMsg( GetHwnd()
 345                  ,LM_SELECTITEM
 346                  ,MPFROMLONG(N)
 347                  ,(MPARAM)bSelect
 348                 );
 349     if(m_windowStyle & wxLB_OWNERDRAW)
 350         Refresh();
 351 } // end of wxListBox::SetSelection
 352
 353 bool wxListBox::IsSelected( int N ) const
 354 {
 355     wxCHECK_MSG( IsValid(N), false,
 356                  wxT("invalid index in wxListBox::Selected") );
 357
 358     LONG                            lItem;
 359
 360     if (GetWindowStyleFlag() & wxLB_EXTENDED)
 361     {
 362         if (N == 0)
 363             lItem = LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYSELECTION, (MPARAM)LIT_FIRST, (MPARAM)0));
 364         else
 365             lItem = LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYSELECTION, (MPARAM)(N - 1), (MPARAM)0));
 366     }
 367     else
 368     {
 369         lItem = LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYSELECTION, (MPARAM)LIT_FIRST, (MPARAM)0));
 370     }
 371     return (lItem == (LONG)N && lItem != LIT_NONE);
 372 } // end of wxListBox::IsSelected
 373
 374 void* wxListBox::DoGetItemClientData(unsigned int n) const
 375 {
 376     wxCHECK_MSG( IsValid(n), NULL,
 377                  wxT("invalid index in wxListBox::GetClientData") );
 378
 379     return((void *)::WinSendMsg(GetHwnd(), LM_QUERYITEMHANDLE, MPFROMLONG(n), (MPARAM)0));
 380 } // end of wxListBox::DoGetItemClientData
 381
 382 void wxListBox::DoSetItemClientData(unsigned int n, void* pClientData)
 383 {
 384     wxCHECK_RET( IsValid(n),
 385                  wxT("invalid index in wxListBox::SetClientData") );
 386
 387     ::WinSendMsg(GetHwnd(), LM_SETITEMHANDLE, MPFROMLONG(n), MPFROMP(pClientData));
 388 } // end of wxListBox::DoSetItemClientData
 389
 390 bool wxListBox::HasMultipleSelection() const
 391 {
 392     return (m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED);
 393 } // end of wxListBox::HasMultipleSelection
 394
 395 int wxListBox::GetSelections( wxArrayInt& raSelections ) const
 396 {
 397     int  nCount = 0;
 398     LONG lItem;
 399
 400
 401     raSelections.Empty();
 402     if (HasMultipleSelection())
 403     {
 404         lItem = LONGFROMMR(::WinSendMsg( GetHwnd()
 405                                         ,LM_QUERYSELECTION
 406                                         ,(MPARAM)LIT_FIRST
 407                                         ,(MPARAM)0
 408                                        )
 409                           );
 410         if (lItem != LIT_NONE)
 411         {
 412             nCount++;
 413             while ((lItem = LONGFROMMR(::WinSendMsg( GetHwnd()
 414                                                     ,LM_QUERYSELECTION
 415                                                     ,(MPARAM)lItem
 416                                                     ,(MPARAM)0
 417                                                    )
 418                                       )) != LIT_NONE)
 419             {
 420                 nCount++;
 421             }
 422             raSelections.Alloc(nCount);
 423             lItem = LONGFROMMR(::WinSendMsg( GetHwnd()
 424                                             ,LM_QUERYSELECTION
 425                                             ,(MPARAM)LIT_FIRST
 426                                             ,(MPARAM)0
 427                                            )
 428                               );
 429
 430             raSelections.Add((int)lItem);
 431             while ((lItem = LONGFROMMR(::WinSendMsg( GetHwnd()
 432                                                     ,LM_QUERYSELECTION
 433                                                     ,(MPARAM)lItem
 434                                                     ,(MPARAM)0
 435                                                    )
 436                                       )) != LIT_NONE)
 437             {
 438                 raSelections.Add((int)lItem);
 439             }
 440             return nCount;
 441         }
 442     }
 443     else  // single-selection listbox
 444     {
 445         lItem = LONGFROMMR(::WinSendMsg( GetHwnd()
 446                                         ,LM_QUERYSELECTION
 447                                         ,(MPARAM)LIT_FIRST
 448                                         ,(MPARAM)0
 449                                        )
 450                           );
 451         raSelections.Add((int)lItem);
 452         return 1;
 453     }
 454     return 0;
 455 } // end of wxListBox::GetSelections
 456
 457 int wxListBox::GetSelection() const
 458 {
 459     wxCHECK_MSG( !HasMultipleSelection(),
 460                  -1,
 461                  wxT("GetSelection() can't be used with multiple-selection "
 462                     "listboxes, use GetSelections() instead.") );
 463
 464     return(LONGFROMMR(::WinSendMsg( GetHwnd()
 465                                    ,LM_QUERYSELECTION
 466                                    ,(MPARAM)LIT_FIRST
 467                                    ,(MPARAM)0
 468                                   )
 469                      ));
 470 } // end of wxListBox::GetSelection
 471
 472 wxString wxListBox::GetString(unsigned int n) const
 473 {
 474     LONG     lLen = 0;
 475     wxChar*  zBuf;
 476     wxString sResult;
 477
 478     wxCHECK_MSG( IsValid(n), wxEmptyString,
 479                  wxT("invalid index in wxListBox::GetClientData") );
 480
 481     lLen = LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXTLENGTH, (MPARAM)n, (MPARAM)0));
 482     zBuf = new wxChar[lLen + 1];
 483     ::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXT, MPFROM2SHORT((SHORT)n, (SHORT)lLen), (MPARAM)zBuf);
 484     zBuf[lLen] = '\0';
 485     sResult = zBuf;
 486     delete [] zBuf;
 487     return sResult;
 488 } // end of wxListBox::GetString
 489
 490 void wxListBox::SetString(unsigned int n, const wxString& rsString)
 491 {
 492     wxCHECK_RET( IsValid(n),
 493                  wxT("invalid index in wxListBox::SetString") );
 494
 495     //
 496     // Remember the state of the item
 497     //
 498     bool           bWasSelected = IsSelected(n);
 499     void*          pOldData = NULL;
 500     wxClientData*  pOldObjData = NULL;
 501
 502     if ( HasClientUntypedData() )
 503         pOldData = GetClientData(n);
 504     else if ( HasClientObjectData() )
 505         pOldObjData = GetClientObject(n);
 506
 507     //
 508     // Delete and recreate it
 509     //
 510     ::WinSendMsg( GetHwnd()
 511                  ,LM_DELETEITEM
 512                  ,(MPARAM)n
 513                  ,(MPARAM)0
 514                 );
 515
 516     int nNewN = n;
 517
 518     if (n == (m_nNumItems - 1))
 519         nNewN = -1;
 520
 521     ::WinSendMsg( GetHwnd()
 522                  ,LM_INSERTITEM
 523                  ,(MPARAM)nNewN
 524                  ,(MPARAM)rsString.wx_str()
 525                 );
 526
 527     //
 528     // Restore the client data
 529     //
 530     if (pOldData)
 531         SetClientData(n, pOldData);
 532     else if (pOldObjData)
 533         SetClientObject(n, pOldObjData);
 534
 535     //
 536     // We may have lost the selection
 537     //
 538     if (bWasSelected)
 539         Select(n);
 540
 541 #if wxUSE_OWNER_DRAWN
 542     if (m_windowStyle & wxLB_OWNERDRAW)
 543         //
 544         // Update item's text
 545         //
 546         m_aItems[n]->SetName(rsString);
 547 #endif  //USE_OWNER_DRAWN
 548 } // end of wxListBox::SetString
 549
 550 unsigned int wxListBox::GetCount() const
 551 {
 552     return m_nNumItems;
 553 }
 554
 555 // ----------------------------------------------------------------------------
 556 // helpers
 557 // ----------------------------------------------------------------------------
 558
 559 wxSize wxListBox::DoGetBestSize() const
 560 {
 561     //
 562     // Find the widest string
 563     //
 564     int        nLine;
 565     int        nListbox = 0;
 566     int        nCx;
 567     int        nCy;
 568     wxFont     vFont = (wxFont)GetFont();
 569
 570     for (unsigned int i = 0; i < m_nNumItems; i++)
 571     {
 572         wxString vStr(GetString(i));
 573
 574         GetTextExtent( vStr, &nLine, NULL );
 575         if (nLine > nListbox)
 576             nListbox = nLine;
 577     }
 578
 579     //
 580     // Give it some reasonable default value if there are no strings in the
 581     // list.
 582     //
 583     if (nListbox == 0)
 584         nListbox = 100;
 585
 586     //
 587     // The listbox should be slightly larger than the widest string
 588     //
 589     wxGetCharSize( GetHWND()
 590                   ,&nCx
 591                   ,&nCy
 592                   ,&vFont
 593                  );
 594     nListbox += 3 * nCx;
 595
 596     int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * (wxMax(m_nNumItems, 7));
 597
 598     return wxSize( nListbox
 599                   ,hListbox
 600                  );
 601 } // end of wxListBox::DoGetBestSize
 602
 603 // ----------------------------------------------------------------------------
 604 // callbacks
 605 // ----------------------------------------------------------------------------
 606
 607 bool wxListBox::OS2Command(
 608   WXUINT                            uParam
 609 , WXWORD                            WXUNUSED(wId))
 610 {
 611     wxEventType                     eEvtType;
 612
 613     if (uParam == LN_SELECT)
 614     {
 615         eEvtType = wxEVT_COMMAND_LISTBOX_SELECTED;
 616     }
 617     else if (uParam == LN_ENTER)
 618     {
 619         eEvtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;
 620     }
 621     else
 622     {
 623         //
 624         // Some event we're not interested in
 625         //
 626         return false;
 627     }
 628     wxCommandEvent                  vEvent( eEvtType
 629                                            ,m_windowId
 630                                           );
 631
 632     vEvent.SetEventObject(this);
 633
 634     wxArrayInt aSelections;
 635     int        n;
 636     int        nCount = GetSelections(aSelections);
 637
 638     if (nCount > 0)
 639     {
 640         n = aSelections[0];
 641         if (HasClientObjectData())
 642             vEvent.SetClientObject(GetClientObject(n));
 643         else if ( HasClientUntypedData() )
 644             vEvent.SetClientData(GetClientData(n));
 645         vEvent.SetString(GetString(n));
 646     }
 647     else
 648     {
 649         n = -1;
 650     }
 651     vEvent.SetInt(n);
 652     return HandleWindowEvent(vEvent);
 653 } // end of wxListBox::OS2Command
 654
 655 // ----------------------------------------------------------------------------
 656 // wxCheckListBox support
 657 // ----------------------------------------------------------------------------
 658
 659 #if wxUSE_OWNER_DRAWN
 660
 661 //
 662 // Drawing
 663 // -------
 664 //
 665 #define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
 666
 667 long wxListBox::OS2OnMeasure(WXMEASUREITEMSTRUCT* pItem)
 668 {
 669     if (!pItem)
 670         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 671
 672     POWNERITEM                      pMeasureStruct = (POWNERITEM)pItem;
 673     wxScreenDC                      vDc;
 674
 675     //
 676     // Only owner-drawn control should receive this message
 677     //
 678     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 679
 680     vDc.SetFont(GetFont());
 681
 682     wxCoord                         vHeight;
 683     wxCoord                         vWidth;
 684
 685     GetSize( &vWidth
 686             ,NULL
 687            );
 688
 689     pMeasureStruct->rclItem.xRight = (USHORT)vWidth;
 690     pMeasureStruct->rclItem.xLeft  = 0;
 691     pMeasureStruct->rclItem.yTop   = 0;
 692     pMeasureStruct->rclItem.yBottom = 0;
 693
 694     vHeight = (wxCoord)(vDc.GetCharHeight() * 2.5);
 695     pMeasureStruct->rclItem.yTop  = (USHORT)vHeight;
 696
 697     return long(MRFROM2SHORT((USHORT)vHeight, (USHORT)vWidth));
 698 } // end of wxListBox::OS2OnMeasure
 699
 700 bool wxListBox::OS2OnDraw (
 701   WXDRAWITEMSTRUCT*                 pItem
 702 )
 703 {
 704     POWNERITEM                      pDrawStruct = (POWNERITEM)pItem;
 705     int                             eAction = 0;
 706     int                             eStatus = 0;
 707
 708     //
 709     // Only owner-drawn control should receive this message
 710     //
 711     wxCHECK(((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false);
 712
 713
 714     //
 715     // The item may be -1 for an empty listbox
 716     //
 717     if (pDrawStruct->idItem == -1L)
 718         return false;
 719
 720     wxListBoxItem* pData = (wxListBoxItem*)m_aItems[pDrawStruct->idItem];
 721
 722     wxClientDC    vDc(this);
 723     wxPMDCImpl *impl = (wxPMDCImpl*) vDc.GetImpl();
 724     wxPoint pt1( pDrawStruct->rclItem.xLeft, pDrawStruct->rclItem.yTop );
 725     wxPoint pt2( pDrawStruct->rclItem.xRight, pDrawStruct->rclItem.yBottom );
 726     wxRect  vRect( pt1, pt2 );
 727
 728     impl->SetHPS(pDrawStruct->hps);
 729
 730     if (pDrawStruct->fsAttribute == pDrawStruct->fsAttributeOld)
 731     {
 732         //
 733         // Entire Item needs to be redrawn (either it has reappeared from
 734         // behind another window or is being displayed for the first time
 735         //
 736         eAction = wxOwnerDrawn::wxODDrawAll;
 737
 738         if (pDrawStruct->fsAttribute & MIA_HILITED)
 739         {
 740             //
 741             // If it is currently selected we let the system handle it
 742             //
 743             eStatus |= wxOwnerDrawn::wxODSelected;
 744         }
 745         if (pDrawStruct->fsAttribute & MIA_CHECKED)
 746         {
 747             //
 748             // If it is currently checked we draw our own
 749             //
 750             eStatus |= wxOwnerDrawn::wxODChecked;
 751             pDrawStruct->fsAttributeOld = pDrawStruct->fsAttribute &= ~MIA_CHECKED;
 752         }
 753         if (pDrawStruct->fsAttribute & MIA_DISABLED)
 754         {
 755             //
 756             // If it is currently disabled we let the system handle it
 757             //
 758             eStatus |= wxOwnerDrawn::wxODDisabled;
 759         }
 760         //
 761         // Don't really care about framed (indicationg focus) or NoDismiss
 762         //
 763     }
 764     else
 765     {
 766         if (pDrawStruct->fsAttribute & MIA_HILITED)
 767         {
 768             eAction = wxOwnerDrawn::wxODDrawAll;
 769             eStatus |= wxOwnerDrawn::wxODSelected;
 770             //
 771             // Keep the system from trying to highlight with its bogus colors
 772             //
 773             pDrawStruct->fsAttributeOld = pDrawStruct->fsAttribute &= ~MIA_HILITED;
 774         }
 775         else if (!(pDrawStruct->fsAttribute & MIA_HILITED))
 776         {
 777             eAction = wxOwnerDrawn::wxODDrawAll;
 778             eStatus = 0;
 779             //
 780             // Keep the system from trying to highlight with its bogus colors
 781             //
 782             pDrawStruct->fsAttribute = pDrawStruct->fsAttributeOld &= ~MIA_HILITED;
 783         }
 784         else
 785         {
 786             //
 787             // For now we don't care about anything else
 788             // just ignore the entire message!
 789             //
 790             return true;
 791         }
 792     }
 793     return pData->OnDrawItem( vDc
 794                              ,vRect
 795                              ,(wxOwnerDrawn::wxODAction)eAction
 796                              ,(wxOwnerDrawn::wxODStatus)eStatus
 797                             );
 798 } // end of wxListBox::OS2OnDraw
 799
 800 #endif // ndef for wxUSE_OWNER_DRAWN
 801
 802 #endif // wxUSE_LISTBOX