src/msw/listbox.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        listbox.cpp
   3 // Purpose:     wxListBox
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin (owner drawn stuff)
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "listbox.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/listbox.h"
  25     #include "wx/settings.h"
  26     #include "wx/brush.h"
  27     #include "wx/font.h"
  28     #include "wx/dc.h"
  29 #endif
  30
  31 #include "wx/msw/private.h"
  32
  33 #include <windows.h>
  34 #include <windowsx.h>
  35
  36 #ifndef __TWIN32__
  37     #ifdef __GNUWIN32__
  38         #include <wx/msw/gnuwin32/extra.h>
  39     #endif
  40 #endif
  41
  42 #ifdef GetCharWidth
  43     #undef GetCharWidth
  44 #endif
  45
  46 #if wxUSE_OWNER_DRAWN
  47     #include  "wx/ownerdrw.h"
  48 #endif
  49
  50 #include "wx/dynarray.h"
  51 #include "wx/log.h"
  52
  53 #if !USE_SHARED_LIBRARY
  54     IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
  55 #endif
  56
  57 // ============================================================================
  58 // list box item declaration and implementation
  59 // ============================================================================
  60
  61 #if wxUSE_OWNER_DRAWN
  62
  63 class wxListBoxItem : public wxOwnerDrawn
  64 {
  65 public:
  66     wxListBoxItem(const wxString& str = "");
  67 };
  68
  69 wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
  70 {
  71     // no bitmaps/checkmarks
  72     SetMarginWidth(0);
  73 }
  74
  75 wxOwnerDrawn *wxListBox::CreateItem(size_t n)
  76 {
  77     return new wxListBoxItem();
  78 }
  79
  80 #endif  //USE_OWNER_DRAWN
  81
  82 // ============================================================================
  83 // list box control implementation
  84 // ============================================================================
  85
  86 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
  87 {
  88     /*
  89        if (param == LBN_SELCANCEL)
  90        {
  91        event.extraLong = FALSE;
  92        }
  93      */
  94     if (param == LBN_SELCHANGE)
  95     {
  96         wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
  97         wxArrayInt aSelections;
  98         int count = GetSelections(aSelections);
  99         if ( count > 0 )
 100         {
 101             event.m_commandInt = aSelections[0] ;
 102             event.m_clientData = GetClientData(event.m_commandInt);
 103             wxString str(GetString(event.m_commandInt));
 104             if (str != "")
 105             {
 106                 event.m_commandString = str;
 107             }
 108         }
 109         else
 110         {
 111             event.m_commandInt = -1 ;
 112             event.m_commandString.Empty();
 113         }
 114
 115         event.SetEventObject( this );
 116         ProcessCommand(event);
 117         return TRUE;
 118     }
 119     else if (param == LBN_DBLCLK)
 120     {
 121         wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
 122         event.SetEventObject( this );
 123         GetEventHandler()->ProcessEvent(event) ;
 124         return TRUE;
 125     }
 126
 127     return FALSE;
 128 }
 129
 130     // Listbox item
 131 wxListBox::wxListBox()
 132 {
 133     m_noItems = 0;
 134     m_selected = 0;
 135 }
 136
 137 bool wxListBox::Create(wxWindow *parent,
 138                        wxWindowID id,
 139                        const wxPoint& pos,
 140                        const wxSize& size,
 141                        int n, const wxString choices[],
 142                        long style,
 143                        const wxValidator& validator,
 144                        const wxString& name)
 145 {
 146     m_noItems = 0;
 147     m_hWnd = 0;
 148     m_selected = 0;
 149
 150     SetName(name);
 151     SetValidator(validator);
 152
 153     if (parent)
 154         parent->AddChild(this);
 155
 156     wxSystemSettings settings;
 157     SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
 158     SetForegroundColour(parent->GetForegroundColour());
 159
 160     m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
 161
 162     int x = pos.x;
 163     int y = pos.y;
 164     int width = size.x;
 165     int height = size.y;
 166     m_windowStyle = style;
 167
 168     DWORD wstyle = WS_VSCROLL | WS_TABSTOP | LBS_NOTIFY | LBS_HASSTRINGS;
 169     if (m_windowStyle & wxLB_MULTIPLE)
 170         wstyle |= LBS_MULTIPLESEL;
 171     else if (m_windowStyle & wxLB_EXTENDED)
 172         wstyle |= LBS_EXTENDEDSEL;
 173
 174     if (m_windowStyle & wxLB_ALWAYS_SB)
 175         wstyle |= LBS_DISABLENOSCROLL ;
 176     if (m_windowStyle & wxLB_HSCROLL)
 177         wstyle |= WS_HSCROLL;
 178     if (m_windowStyle & wxLB_SORT)
 179         wstyle |= LBS_SORT;
 180
 181 #if wxUSE_OWNER_DRAWN
 182     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 183         // we don't support LBS_OWNERDRAWVARIABLE yet
 184         wstyle |= LBS_OWNERDRAWFIXED;
 185     }
 186 #endif
 187
 188     // Without this style, you get unexpected heights, so e.g. constraint layout
 189     // doesn't work properly
 190     wstyle |= LBS_NOINTEGRALHEIGHT;
 191
 192     bool want3D;
 193     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
 194
 195     // Even with extended styles, need to combine with WS_BORDER
 196     // for them to look right.
 197     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 198     {
 199         wstyle |= WS_BORDER;
 200     }
 201
 202     m_hWnd = (WXHWND)::CreateWindowEx(exStyle, "LISTBOX", NULL,
 203             wstyle | WS_CHILD,
 204             0, 0, 0, 0,
 205             (HWND)parent->GetHWND(), (HMENU)m_windowId,
 206             wxGetInstance(), NULL);
 207
 208     wxCHECK_MSG( m_hWnd, FALSE, "Failed to create listbox" );
 209
 210 #if wxUSE_CTL3D
 211     if (want3D)
 212     {
 213         Ctl3dSubclassCtl(GetHwnd());
 214         m_useCtl3D = TRUE;
 215     }
 216 #endif
 217
 218     // Subclass again to catch messages
 219     SubclassWin(m_hWnd);
 220
 221     size_t ui;
 222     for (ui = 0; ui < (size_t)n; ui++) {
 223         Append(choices[ui]);
 224     }
 225
 226     if ( (m_windowStyle & wxLB_MULTIPLE) == 0 )
 227         SendMessage(GetHwnd(), LB_SETCURSEL, 0, 0);
 228
 229     SetFont(parent->GetFont());
 230
 231     SetSize(x, y, width, height);
 232
 233     Show(TRUE);
 234
 235     return TRUE;
 236 }
 237
 238 wxListBox::~wxListBox()
 239 {
 240 #if wxUSE_OWNER_DRAWN
 241     size_t uiCount = m_aItems.Count();
 242     while ( uiCount-- != 0 ) {
 243         delete m_aItems[uiCount];
 244     }
 245 #endif // wxUSE_OWNER_DRAWN
 246 }
 247
 248 void wxListBox::SetupColours()
 249 {
 250     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
 251     SetForegroundColour(GetParent()->GetForegroundColour());
 252 }
 253
 254 void wxListBox::SetFirstItem(int N)
 255 {
 256     wxCHECK_RET( N >= 0 && N < m_noItems,
 257                  "invalid index in wxListBox::SetFirstItem" );
 258
 259     SendMessage(GetHwnd(),LB_SETTOPINDEX,(WPARAM)N,(LPARAM)0) ;
 260 }
 261
 262 void wxListBox::SetFirstItem(const wxString& s)
 263 {
 264     int N = FindString(s) ;
 265
 266     if ( N >= 0 )
 267         SetFirstItem(N) ;
 268 }
 269
 270 void wxListBox::Delete(int N)
 271 {
 272     wxCHECK_RET( N >= 0 && N < m_noItems,
 273                  "invalid index in wxListBox::Delete" );
 274
 275     SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
 276     m_noItems--;
 277
 278     SetHorizontalExtent("");
 279 }
 280
 281 void wxListBox::Append(const wxString& item)
 282 {
 283     int index = ListBox_AddString(GetHwnd(), item);
 284     m_noItems ++;
 285
 286 #if wxUSE_OWNER_DRAWN
 287     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 288         wxOwnerDrawn *pNewItem = CreateItem(index); // dummy argument
 289         pNewItem->SetName(item);
 290         m_aItems.Add(pNewItem);
 291         ListBox_SetItemData(GetHwnd(), index, pNewItem);
 292     }
 293 #endif
 294
 295     SetHorizontalExtent(item);
 296 }
 297
 298 void wxListBox::Append(const wxString& item, char *Client_data)
 299 {
 300     int index = ListBox_AddString(GetHwnd(), item);
 301     m_noItems ++;
 302
 303 #if wxUSE_OWNER_DRAWN
 304     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 305         // client data must be pointer to wxOwnerDrawn, otherwise we would crash
 306         // in OnMeasure/OnDraw.
 307         wxFAIL_MSG("Can't use client data with owner-drawn listboxes");
 308     }
 309     else
 310 #endif
 311
 312     ListBox_SetItemData(GetHwnd(), index, Client_data);
 313
 314     SetHorizontalExtent(item);
 315 }
 316
 317 void wxListBox::Set(int n, const wxString *choices, char** clientData)
 318 {
 319     ShowWindow(GetHwnd(), SW_HIDE);
 320     ListBox_ResetContent(GetHwnd());
 321     int i;
 322     for (i = 0; i < n; i++)
 323     {
 324         ListBox_AddString(GetHwnd(), choices[i]);
 325         if ( clientData )
 326             ListBox_SetItemData(GetHwnd(), i, clientData[i]);
 327     }
 328     m_noItems = n;
 329
 330 #if wxUSE_OWNER_DRAWN
 331     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 332         // first delete old items
 333         size_t ui = m_aItems.Count();
 334         while ( ui-- != 0 ) {
 335             delete m_aItems[ui];
 336         }
 337         m_aItems.Empty();
 338
 339         // then create new ones
 340         for (ui = 0; ui < (size_t)n; ui++) {
 341             wxOwnerDrawn *pNewItem = CreateItem(ui);
 342             pNewItem->SetName(choices[ui]);
 343             m_aItems.Add(pNewItem);
 344             ListBox_SetItemData(GetHwnd(), ui, pNewItem);
 345
 346             wxASSERT_MSG(clientData[ui] == NULL,
 347                     "Can't use client data with owner-drawn listboxes");
 348         }
 349     }
 350 #endif
 351
 352     SetHorizontalExtent("");
 353     ShowWindow(GetHwnd(), SW_SHOW);
 354 }
 355
 356 int wxListBox::FindString(const wxString& s) const
 357 {
 358     int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-1, s);
 359     if (pos == LB_ERR)
 360         return -1;
 361     else
 362         return pos;
 363 }
 364
 365 void wxListBox::Clear()
 366 {
 367     ListBox_ResetContent(GetHwnd());
 368
 369 #if wxUSE_OWNER_DRAWN
 370     size_t uiCount = m_aItems.Count();
 371     while ( uiCount-- != 0 ) {
 372         delete m_aItems[uiCount];
 373     }
 374
 375     m_aItems.Clear();
 376 #endif // wxUSE_OWNER_DRAWN
 377
 378     m_noItems = 0;
 379     ListBox_GetHorizontalExtent(GetHwnd());
 380 }
 381
 382 void wxListBox::SetSelection(int N, bool select)
 383 {
 384     wxCHECK_RET( N >= 0 && N < m_noItems,
 385                  "invalid index in wxListBox::SetSelection" );
 386
 387     if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
 388         SendMessage(GetHwnd(), LB_SETSEL, select, N);
 389     else
 390     {
 391         int N1 = N;
 392         if (!select)
 393             N1 = -1;
 394         SendMessage(GetHwnd(), LB_SETCURSEL, N1, 0);
 395     }
 396 }
 397
 398 bool wxListBox::Selected(int N) const
 399 {
 400     wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
 401                  "invalid index in wxListBox::Selected" );
 402
 403     return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
 404 }
 405
 406 void wxListBox::Deselect(int N)
 407 {
 408     wxCHECK_RET( N >= 0 && N < m_noItems,
 409                  "invalid index in wxListBox::Deselect" );
 410
 411     if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
 412         SendMessage(GetHwnd(), LB_SETSEL, FALSE, N);
 413 }
 414
 415 char *wxListBox::GetClientData(int N) const
 416 {
 417     wxCHECK_MSG( N >= 0 && N < m_noItems, NULL,
 418                  "invalid index in wxListBox::GetClientData" );
 419
 420     return (char *)SendMessage(GetHwnd(), LB_GETITEMDATA, N, 0);
 421 }
 422
 423 void wxListBox::SetClientData(int N, char *Client_data)
 424 {
 425     wxCHECK_RET( N >= 0 && N < m_noItems,
 426                  "invalid index in wxListBox::SetClientData" );
 427
 428     if ( ListBox_SetItemData(GetHwnd(), N, Client_data) == LB_ERR )
 429         wxLogDebug("LB_SETITEMDATA failed");
 430 }
 431
 432 // Return number of selections and an array of selected integers
 433 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 434 {
 435     aSelections.Empty();
 436
 437     if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
 438     {
 439         int no_sel = ListBox_GetSelCount(GetHwnd());
 440         if (no_sel != 0) {
 441             int *selections = new int[no_sel];
 442             if ( ListBox_GetSelItems(GetHwnd(), no_sel, selections) == LB_ERR ) {
 443                 wxFAIL_MSG("This listbox can't have single-selection style!");
 444             }
 445
 446             aSelections.Alloc(no_sel);
 447             for ( int n = 0; n < no_sel; n++ )
 448                 aSelections.Add(selections[n]);
 449
 450             delete [] selections;
 451         }
 452
 453         return no_sel;
 454     }
 455     else  // single-selection listbox
 456     {
 457         aSelections.Add(ListBox_GetCurSel(GetHwnd()));
 458
 459         return 1;
 460     }
 461 }
 462
 463 // Get single selection, for single choice list items
 464 int wxListBox::GetSelection() const
 465 {
 466     wxCHECK_MSG( !(m_windowStyle & wxLB_MULTIPLE) &&
 467                  !(m_windowStyle & wxLB_EXTENDED),
 468                  -1,
 469                  "GetSelection() can't be used with multiple-selection "
 470                  "listboxes, use GetSelections() instead." );
 471
 472     return ListBox_GetCurSel(GetHwnd());
 473 }
 474
 475 // Find string for position
 476 wxString wxListBox::GetString(int N) const
 477 {
 478     wxCHECK_MSG( N >= 0 && N < m_noItems, "",
 479                  "invalid index in wxListBox::GetClientData" );
 480
 481     int len = ListBox_GetTextLen(GetHwnd(), N);
 482
 483     // +1 for terminating NUL
 484     wxString result;
 485     ListBox_GetText(GetHwnd(), N, result.GetWriteBuf(len + 1));
 486     result.UngetWriteBuf();
 487
 488     return result;
 489 }
 490
 491 void wxListBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 492 {
 493     int currentX, currentY;
 494     GetPosition(&currentX, &currentY);
 495
 496     int x1 = x;
 497     int y1 = y;
 498     int w1 = width;
 499     int h1 = height;
 500
 501     if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 502         x1 = currentX;
 503     if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 504         y1 = currentY;
 505
 506     AdjustForParentClientOrigin(x1, y1, sizeFlags);
 507
 508     // If we're prepared to use the existing size, then...
 509     if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 510     {
 511         GetSize(&w1, &h1);
 512     }
 513
 514     int cx; // button font dimensions
 515     int cy;
 516
 517     wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
 518
 519     float control_width, control_height, control_x, control_y;
 520
 521     // Deal with default size (using -1 values)
 522     if (w1<=0)
 523         w1 = DEFAULT_ITEM_WIDTH;
 524
 525     if (h1<=0)
 526         h1 = DEFAULT_ITEM_HEIGHT;
 527
 528     control_x = (float)x1;
 529     control_y = (float)y1;
 530     control_width = (float)w1;
 531     control_height = (float)h1;
 532
 533     // Calculations may have made size too small
 534     if (control_height <= 0)
 535         control_height = (float)DEFAULT_ITEM_HEIGHT;
 536
 537     if (control_width <= 0)
 538         control_width = (float)DEFAULT_ITEM_WIDTH;
 539
 540     MoveWindow(GetHwnd(),
 541                (int)control_x, (int)control_y,
 542                (int)control_width, (int)control_height,
 543                TRUE);
 544
 545 }
 546
 547 // Windows-specific code to set the horizontal extent of
 548 // the listbox, if necessary. If s is non-NULL, it's
 549 // used to calculate the horizontal extent.
 550 // Otherwise, all strings are used.
 551 void wxListBox::SetHorizontalExtent(const wxString& s)
 552 {
 553     // Only necessary if we want a horizontal scrollbar
 554     if (!(m_windowStyle & wxHSCROLL))
 555         return;
 556     TEXTMETRIC lpTextMetric;
 557
 558     if (s != "")
 559     {
 560         int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L);
 561         HDC dc = GetWindowDC(GetHwnd());
 562         HFONT oldFont = 0;
 563         if (GetFont().Ok() && GetFont().GetResourceHandle())
 564             oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
 565
 566         GetTextMetrics(dc, &lpTextMetric);
 567         SIZE extentXY;
 568         ::GetTextExtentPoint(dc, (LPSTR) (const char *)s, s.Length(), &extentXY);
 569         int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
 570
 571         if (oldFont)
 572             ::SelectObject(dc, oldFont);
 573
 574         ReleaseDC(GetHwnd(), dc);
 575         if (extentX > existingExtent)
 576             SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
 577         return;
 578     }
 579     else
 580     {
 581         int largestExtent = 0;
 582         HDC dc = GetWindowDC(GetHwnd());
 583         HFONT oldFont = 0;
 584         if (GetFont().Ok() && GetFont().GetResourceHandle())
 585             oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
 586
 587         GetTextMetrics(dc, &lpTextMetric);
 588         int i;
 589         for (i = 0; i < m_noItems; i++)
 590         {
 591             int len = (int)SendMessage(GetHwnd(), LB_GETTEXT, i, (LONG)wxBuffer);
 592             wxBuffer[len] = 0;
 593             SIZE extentXY;
 594             ::GetTextExtentPoint(dc, (LPSTR)wxBuffer, len, &extentXY);
 595             int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
 596             if (extentX > largestExtent)
 597                 largestExtent = extentX;
 598         }
 599         if (oldFont)
 600             ::SelectObject(dc, oldFont);
 601
 602         ReleaseDC(GetHwnd(), dc);
 603         SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
 604     }
 605 }
 606
 607 void
 608 wxListBox::InsertItems(int nItems, const wxString items[], int pos)
 609 {
 610     wxCHECK_RET( pos >= 0 && pos <= m_noItems,
 611                  "invalid index in wxListBox::InsertItems" );
 612
 613     int i;
 614     for (i = 0; i < nItems; i++)
 615         ListBox_InsertString(GetHwnd(), i + pos, items[i]);
 616     m_noItems += nItems;
 617
 618     SetHorizontalExtent("");
 619 }
 620
 621 void wxListBox::SetString(int N, const wxString& s)
 622 {
 623     wxCHECK_RET( N >= 0 && N < m_noItems,
 624                  "invalid index in wxListBox::SetString" );
 625
 626     int sel = -1;
 627     if (!(m_windowStyle & wxLB_MULTIPLE) && !(m_windowStyle & wxLB_EXTENDED))
 628         sel = GetSelection();
 629
 630     char *oldData = (char *)wxListBox::GetClientData(N);
 631
 632     SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
 633
 634     int newN = N;
 635     if (N == (m_noItems - 1))
 636         newN = -1;
 637
 638     SendMessage(GetHwnd(), LB_INSERTSTRING, newN, (LPARAM) (const char *)s);
 639     if (oldData)
 640         wxListBox::SetClientData(N, oldData);
 641
 642     // Selection may have changed
 643     if (sel >= 0)
 644         SetSelection(sel);
 645
 646 #if       wxUSE_OWNER_DRAWN
 647     if ( m_windowStyle & wxLB_OWNERDRAW )
 648         // update item's text
 649         m_aItems[N]->SetName(s);
 650 #endif  //USE_OWNER_DRAWN
 651 }
 652
 653 int wxListBox::Number () const
 654 {
 655     return m_noItems;
 656 }
 657
 658 // For single selection items only
 659 wxString wxListBox::GetStringSelection () const
 660 {
 661     int sel = GetSelection ();
 662     if (sel > -1)
 663         return this->GetString (sel);
 664     else
 665         return wxString("");
 666 }
 667
 668 bool wxListBox::SetStringSelection (const wxString& s, bool flag)
 669 {
 670     int sel = FindString (s);
 671     if (sel > -1)
 672     {
 673         SetSelection (sel, flag);
 674         return TRUE;
 675     }
 676     else
 677         return FALSE;
 678 }
 679
 680 // Is this the right thing? Won't setselection generate a command
 681 // event too? No! It'll just generate a setselection event.
 682 // But we still can't have this being called whenever a real command
 683 // is generated, because it sets the selection, which will already
 684 // have been done! (Unless we have an optional argument for calling
 685 // by the actual window system, or a separate function, ProcessCommand)
 686 void wxListBox::Command (wxCommandEvent & event)
 687 {
 688     if (event.m_extraLong)
 689         SetSelection (event.m_commandInt);
 690     else
 691     {
 692         Deselect (event.m_commandInt);
 693         return;
 694     }
 695     ProcessCommand (event);
 696 }
 697
 698 WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 699         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 700 {
 701 #if wxUSE_CTL3D
 702     if ( m_useCtl3D )
 703     {
 704         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 705         return (WXHBRUSH) hbrush;
 706     }
 707 #endif
 708
 709     if (GetParent()->GetTransparentBackground())
 710         SetBkMode((HDC) pDC, TRANSPARENT);
 711     else
 712         SetBkMode((HDC) pDC, OPAQUE);
 713
 714     ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 715     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 716
 717     wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 718
 719     // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 720     // has a zero usage count.
 721     backgroundBrush->RealizeResource();
 722     return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 723 }
 724
 725 long wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 726 {
 727     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 728 }
 729
 730 #if wxUSE_OWNER_DRAWN
 731
 732 // drawing
 733 // -------
 734
 735 // space beneath/above each row in pixels
 736 // "standard" checklistbox use 1 here, some might prefer 2. 0 is ugly.
 737 #define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
 738
 739 // the height is the same for all items
 740 // TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes
 741
 742 // NB: can't forward this to wxListBoxItem because LB_SETITEMDATA
 743 //     message is not yet sent when we get here!
 744 bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 745 {
 746     // only owner-drawn control should receive this message
 747     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 748
 749     MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 750
 751     wxDC dc;
 752     dc.SetHDC((WXHDC)CreateIC("DISPLAY", NULL, NULL, 0));
 753     dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
 754
 755     pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
 756     pStruct->itemWidth  = dc.GetCharWidth();
 757
 758     return TRUE;
 759 }
 760
 761 // forward the message to the appropriate item
 762 bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 763 {
 764     // only owner-drawn control should receive this message
 765     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 766
 767     DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
 768
 769     long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
 770
 771     wxCHECK( data && (data != LB_ERR), FALSE );
 772
 773     wxListBoxItem *pItem = (wxListBoxItem *)data;
 774
 775     wxDC dc;
 776     dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
 777     wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top),
 778             wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
 779
 780     return pItem->OnDrawItem(dc, rect,
 781             (wxOwnerDrawn::wxODAction)pStruct->itemAction,
 782             (wxOwnerDrawn::wxODStatus)pStruct->itemState);
 783 }
 784
 785 #endif
 786     // wxUSE_OWNER_DRAWN