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 #endif
  27
  28 #include "wx/msw/private.h"
  29
  30 #include <windows.h>
  31 #include <windowsx.h>
  32
  33 #ifdef __GNUWIN32__
  34 #include <wx/msw/gnuwin32/extra.h>
  35 #endif
  36
  37 #ifdef GetCharWidth
  38 #undef GetCharWidth
  39 #endif
  40
  41 #if USE_OWNER_DRAWN
  42   #include  "wx/ownerdrw.h"
  43 #endif
  44
  45 #include "wx/dynarray.h"
  46 #include "wx/log.h"
  47
  48 #if !USE_SHARED_LIBRARY
  49   IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
  50 #endif
  51
  52 // ============================================================================
  53 // list box item declaration and implementation
  54 // ============================================================================
  55
  56 #if USE_OWNER_DRAWN
  57
  58 class wxListBoxItem : public wxOwnerDrawn
  59 {
  60 public:
  61   wxListBoxItem(const wxString& str = "");
  62 };
  63
  64 wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
  65 {
  66   // no bitmaps/checkmarks
  67   SetMarginWidth(0);
  68 }
  69
  70 wxOwnerDrawn *wxListBox::CreateItem(uint n)
  71 {
  72   return new wxListBoxItem();
  73 }
  74
  75 #endif  //USE_OWNER_DRAWN
  76
  77 // ============================================================================
  78 // list box control implementation
  79 // ============================================================================
  80
  81 // this macro is dangerous but still better than tons of (HWND)GetHWND()
  82 #define   hwnd    (HWND)GetHWND()
  83
  84 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
  85 {
  86 /*
  87   if (param == LBN_SELCANCEL)
  88   {
  89     event.extraLong = FALSE;
  90   }
  91 */
  92   if (param == LBN_SELCHANGE)
  93   {
  94     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
  95     wxArrayInt aSelections;
  96     int count = GetSelections(aSelections);
  97     if ( count > 0 )
  98     {
  99       event.m_commandInt = aSelections[0] ;
 100       event.m_clientData = GetClientData(event.m_commandInt);
 101       wxString str(GetString(event.m_commandInt));
 102       if (str != "")
 103         event.m_commandString = copystring((char *)(const char *)str);
 104     }
 105     else
 106     {
 107       event.m_commandInt = -1 ;
 108       event.m_commandString = copystring("") ;
 109     }
 110
 111     event.SetEventObject( this );
 112     ProcessCommand(event);
 113     if (event.m_commandString)
 114       delete[] event.m_commandString ;
 115     return TRUE;
 116   }
 117   else if (param == LBN_DBLCLK)
 118   {
 119     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
 120     event.SetEventObject( this );
 121     GetEventHandler()->ProcessEvent(event) ;
 122     return TRUE;
 123 /*
 124     {
 125 #if WXWIN_COMPATIBILITY
 126       wxWindow *parent = (wxWindow *)GetParent();
 127       if (parent)
 128         parent->GetEventHandler()->OnDefaultAction(this);
 129 #endif
 130       return TRUE;
 131     }
 132  */
 133   }
 134   return FALSE;
 135 }
 136
 137 // Listbox item
 138 wxListBox::wxListBox(void)
 139 {
 140   m_noItems = 0;
 141   m_selected = 0;
 142 }
 143
 144 bool wxListBox::Create(wxWindow *parent, wxWindowID id,
 145                        const wxPoint& pos,
 146                        const wxSize& size,
 147                        int n, const wxString choices[],
 148                        long style,
 149                        const wxValidator& validator,
 150                        const wxString& name)
 151 {
 152   m_noItems = n;
 153   m_hWnd = 0;
 154   m_selected = 0;
 155
 156   SetName(name);
 157   SetValidator(validator);
 158
 159   if (parent) parent->AddChild(this);
 160
 161   wxSystemSettings settings;
 162   SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
 163   SetForegroundColour(parent->GetDefaultForegroundColour());
 164
 165   m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
 166
 167   int x = pos.x;
 168   int y = pos.y;
 169   int width = size.x;
 170   int height = size.y;
 171   m_windowStyle = style;
 172
 173   DWORD wstyle = WS_VSCROLL | WS_TABSTOP | LBS_NOTIFY | LBS_HASSTRINGS;
 174   if (m_windowStyle & wxLB_MULTIPLE)
 175     wstyle |= LBS_MULTIPLESEL;
 176   else if (m_windowStyle & wxLB_EXTENDED)
 177     wstyle |= LBS_EXTENDEDSEL;
 178
 179   if (m_windowStyle & wxLB_ALWAYS_SB)
 180     wstyle |= LBS_DISABLENOSCROLL ;
 181   if (m_windowStyle & wxLB_HSCROLL)
 182     wstyle |= WS_HSCROLL;
 183   if (m_windowStyle & wxLB_SORT)
 184     wstyle |= LBS_SORT;
 185
 186 #if USE_OWNER_DRAWN
 187     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 188       // we don't support LBS_OWNERDRAWVARIABLE yet
 189       wstyle |= LBS_OWNERDRAWFIXED;
 190     }
 191 #endif
 192   // Without this style, you get unexpected heights, so e.g. constraint layout
 193   // doesn't work properly
 194   wstyle |= LBS_NOINTEGRALHEIGHT;
 195
 196   bool want3D;
 197   WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
 198
 199   // Even with extended styles, need to combine with WS_BORDER
 200   // for them to look right.
 201   if ( want3D || (m_windowStyle & wxSIMPLE_BORDER)
 202               || (m_windowStyle & wxRAISED_BORDER)
 203               || (m_windowStyle & wxSUNKEN_BORDER)
 204               || (m_windowStyle & wxDOUBLE_BORDER) ) {
 205     wstyle |= WS_BORDER;
 206   }
 207
 208   HWND wx_list = CreateWindowEx(exStyle, "LISTBOX", NULL,
 209                                 wstyle | WS_CHILD,
 210                                 0, 0, 0, 0,
 211                                 (HWND)parent->GetHWND(), (HMENU)m_windowId,
 212                                 wxGetInstance(), NULL);
 213
 214   m_hWnd = (WXHWND)wx_list;
 215
 216 #if CTL3D
 217   if (want3D)
 218   {
 219     Ctl3dSubclassCtl(wx_list);
 220     m_useCtl3D = TRUE;
 221   }
 222 #endif
 223
 224   // Subclass again to catch messages
 225   SubclassWin((WXHWND)wx_list);
 226
 227   uint ui;
 228   for (ui = 0; ui < (uint)n; ui++) {
 229     SendMessage(wx_list, LB_ADDSTRING, 0, (LPARAM)(const char *)choices[ui]);
 230   }
 231
 232 #if USE_OWNER_DRAWN
 233     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 234       for (ui = 0; ui < (uint)n; ui++) {
 235         // create new item which will process WM_{DRAW|MEASURE}ITEM messages
 236         wxOwnerDrawn *pNewItem = CreateItem(ui);
 237         pNewItem->SetName(choices[ui]);
 238         m_aItems.Add(pNewItem);
 239         ListBox_SetItemData(wx_list, ui, pNewItem);
 240       }
 241     }
 242 #endif
 243
 244   if ((m_windowStyle & wxLB_MULTIPLE) == 0)
 245     SendMessage(wx_list, LB_SETCURSEL, 0, 0);
 246
 247   SetFont(* parent->GetFont());
 248
 249   SetSize(x, y, width, height);
 250
 251   ShowWindow(wx_list, SW_SHOW);
 252
 253   return TRUE;
 254 }
 255
 256 wxListBox::~wxListBox(void)
 257 {
 258 #if USE_OWNER_DRAWN
 259     uint uiCount = m_aItems.Count();
 260     while ( uiCount-- != 0 ) {
 261       delete m_aItems[uiCount];
 262     }
 263 #endif
 264 }
 265
 266 void wxListBox::SetupColours(void)
 267 {
 268   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
 269   SetForegroundColour(GetParent()->GetDefaultForegroundColour());
 270 }
 271
 272 void wxListBox::SetFirstItem(int N)
 273 {
 274   SendMessage(hwnd,LB_SETTOPINDEX,(WPARAM)N,(LPARAM)0) ;
 275 }
 276
 277 void wxListBox::SetFirstItem(const wxString& s)
 278 {
 279   int N = FindString(s) ;
 280
 281   if (N>=0)
 282     SetFirstItem(N) ;
 283 }
 284
 285 void wxListBox::Delete(int N)
 286 {
 287   SendMessage(hwnd, LB_DELETESTRING, N, 0);
 288   m_noItems --;
 289   SetHorizontalExtent("");
 290 }
 291
 292 void wxListBox::Append(const wxString& item)
 293 {
 294   int index = ListBox_AddString(hwnd, item);
 295   m_noItems ++;
 296
 297 #if USE_OWNER_DRAWN
 298     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 299       wxOwnerDrawn *pNewItem = CreateItem(-1); // dummy argument
 300       pNewItem->SetName(item);
 301       m_aItems.Add(pNewItem);
 302       ListBox_SetItemData(hwnd, index, pNewItem);
 303     }
 304 #endif
 305
 306   SetHorizontalExtent(item);
 307 }
 308
 309 void wxListBox::Append(const wxString& item, char *Client_data)
 310 {
 311   int index = ListBox_AddString(hwnd, item);
 312   m_noItems ++;
 313
 314 #if USE_OWNER_DRAWN
 315     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 316       // client data must be pointer to wxOwnerDrawn, otherwise we would crash
 317       // in OnMeasure/OnDraw.
 318       wxFAIL_MSG("Can't use client data with owner-drawn listboxes");
 319     }
 320     else
 321 #endif
 322       ListBox_SetItemData(hwnd, index, Client_data);
 323
 324   SetHorizontalExtent(item);
 325 }
 326
 327 void wxListBox::Set(int n, const wxString *choices, char** clientData)
 328 {
 329   ShowWindow(hwnd, SW_HIDE);
 330   ListBox_ResetContent(hwnd);
 331   int i;
 332   for (i = 0; i < n; i++)
 333   {
 334     ListBox_AddString(hwnd, choices[i]);
 335     if ( clientData )
 336       ListBox_SetItemData(hwnd, i, clientData[i]);
 337   }
 338   m_noItems = n;
 339
 340 #if USE_OWNER_DRAWN
 341     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 342       // first delete old items
 343       uint ui = m_aItems.Count();
 344       while ( ui-- != 0 ) {
 345         delete m_aItems[ui];
 346       }
 347       m_aItems.Empty();
 348
 349       // then create new ones
 350       for (ui = 0; ui < (uint)n; ui++) {
 351         wxOwnerDrawn *pNewItem = CreateItem(ui);
 352         pNewItem->SetName(choices[ui]);
 353         m_aItems.Add(pNewItem);
 354         ListBox_SetItemData(hwnd, ui, pNewItem);
 355
 356         wxASSERT_MSG(clientData[ui] == NULL,
 357                      "Can't use client data with owner-drawn listboxes");
 358       }
 359     }
 360 #endif
 361
 362   SetHorizontalExtent("");
 363   ShowWindow(hwnd, SW_SHOW);
 364 }
 365
 366 int wxListBox::FindString(const wxString& s) const
 367 {
 368  int pos = ListBox_FindStringExact(hwnd, (WPARAM)-1, s);
 369  if (pos == LB_ERR)
 370    return -1;
 371  else
 372    return pos;
 373 }
 374
 375 void wxListBox::Clear(void)
 376 {
 377   ListBox_ResetContent(hwnd);
 378
 379   m_noItems = 0;
 380   ListBox_GetHorizontalExtent(hwnd);
 381 }
 382
 383 void wxListBox::SetSelection(int N, bool select)
 384 {
 385   if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
 386     SendMessage(hwnd, LB_SETSEL, select, N);
 387   else
 388   {
 389     int N1 = N;
 390     if (!select)
 391         N1 = -1;
 392     SendMessage(hwnd, LB_SETCURSEL, N1, 0);
 393   }
 394 }
 395
 396 bool wxListBox::Selected(int N) const
 397 {
 398   return SendMessage(hwnd, LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
 399 }
 400
 401 void wxListBox::Deselect(int N)
 402 {
 403   if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
 404     SendMessage(hwnd, LB_SETSEL, FALSE, N);
 405 }
 406
 407 char *wxListBox::GetClientData(int N) const
 408 {
 409   return (char *)SendMessage(hwnd, LB_GETITEMDATA, N, 0);
 410 }
 411
 412 void wxListBox::SetClientData(int N, char *Client_data)
 413 {
 414   if ( ListBox_SetItemData(hwnd, N, Client_data) == LB_ERR )
 415     wxLogDebug("LB_SETITEMDATA failed");
 416 }
 417
 418 // Return number of selections and an array of selected integers
 419 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 420 {
 421   aSelections.Empty();
 422
 423   if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
 424   {
 425     int no_sel = ListBox_GetSelCount(hwnd);
 426     if (no_sel != 0) {
 427       int *selections = new int[no_sel];
 428       if ( ListBox_GetSelItems(hwnd, no_sel, selections) == LB_ERR ) {
 429         wxFAIL_MSG("This listbox can't have single-selection style!");
 430       }
 431
 432       aSelections.Alloc(no_sel);
 433       for ( int n = 0; n < no_sel; n++ )
 434         aSelections.Add(selections[n]);
 435
 436       delete [] selections;
 437     }
 438
 439     return no_sel;
 440   }
 441   else  // single-selection listbox
 442   {
 443     aSelections.Add(ListBox_GetCurSel(hwnd));
 444
 445     return 1;
 446   }
 447 }
 448
 449 // Get single selection, for single choice list items
 450 int wxListBox::GetSelection() const
 451 {
 452   wxCHECK_MSG( !(m_windowStyle & wxLB_MULTIPLE) &&
 453                !(m_windowStyle & wxLB_EXTENDED),
 454                -1,
 455                "GetSelection() can't be used with multiple-selection "
 456                "listboxes, use GetSelections() instead." );
 457
 458   return ListBox_GetCurSel(hwnd);
 459 }
 460
 461 // Find string for position
 462 wxString wxListBox::GetString(int N) const
 463 {
 464   if (N < 0 || N > m_noItems)
 465     return wxString("");
 466
 467   int len = (int)SendMessage(hwnd, LB_GETTEXT, N, (LONG)wxBuffer);
 468   wxBuffer[len] = 0;
 469   return wxString(wxBuffer);
 470 }
 471
 472 void wxListBox::SetSize(int x, int y, int width, int height, int sizeFlags)
 473 {
 474   int currentX, currentY;
 475   GetPosition(&currentX, &currentY);
 476
 477   int x1 = x;
 478   int y1 = y;
 479   int w1 = width;
 480   int h1 = height;
 481
 482   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 483     x1 = currentX;
 484   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 485     y1 = currentY;
 486
 487   // If we're prepared to use the existing size, then...
 488   if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 489   {
 490     GetSize(&w1, &h1);
 491   }
 492
 493   int cx; // button font dimensions
 494   int cy;
 495
 496   wxGetCharSize(GetHWND(), &cx, &cy,GetFont());
 497
 498   float control_width, control_height, control_x, control_y;
 499
 500   // Deal with default size (using -1 values)
 501   if (w1<=0)
 502     w1 = DEFAULT_ITEM_WIDTH;
 503
 504   if (h1<=0)
 505     h1 = DEFAULT_ITEM_HEIGHT;
 506
 507   control_x = (float)x1;
 508   control_y = (float)y1;
 509   control_width = (float)w1;
 510   control_height = (float)h1;
 511
 512   // Calculations may have made size too small
 513   if (control_height <= 0)
 514     control_height = (float)DEFAULT_ITEM_HEIGHT;
 515
 516   if (control_width <= 0)
 517     control_width = (float)DEFAULT_ITEM_WIDTH;
 518
 519 //  wxDebugMsg("About to set the listbox height to %d", (int)control_height);
 520   MoveWindow(hwnd, (int)control_x, (int)control_y,
 521                    (int)control_width, (int)control_height, TRUE);
 522
 523 }
 524
 525 // Windows-specific code to set the horizontal extent of
 526 // the listbox, if necessary. If s is non-NULL, it's
 527 // used to calculate the horizontal extent.
 528 // Otherwise, all strings are used.
 529 void wxListBox::SetHorizontalExtent(const wxString& s)
 530 {
 531   // Only necessary if we want a horizontal scrollbar
 532   if (!(m_windowStyle & wxHSCROLL))
 533     return;
 534   TEXTMETRIC lpTextMetric;
 535
 536   if (s != "")
 537   {
 538     int existingExtent = (int)SendMessage(hwnd, LB_GETHORIZONTALEXTENT, 0, 0L);
 539     HDC dc = GetWindowDC(hwnd);
 540     HFONT oldFont = 0;
 541     if (GetFont() && GetFont()->GetResourceHandle())
 542       oldFont = ::SelectObject(dc, (HFONT) GetFont()->GetResourceHandle());
 543
 544     GetTextMetrics(dc, &lpTextMetric);
 545     SIZE extentXY;
 546     ::GetTextExtentPoint(dc, (LPSTR) (const char *)s, s.Length(), &extentXY);
 547     int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
 548
 549     if (oldFont)
 550       ::SelectObject(dc, oldFont);
 551
 552     ReleaseDC(hwnd, dc);
 553     if (extentX > existingExtent)
 554       SendMessage(hwnd, LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
 555     return;
 556   }
 557   else
 558   {
 559     int largestExtent = 0;
 560     HDC dc = GetWindowDC(hwnd);
 561     HFONT oldFont = 0;
 562     if (GetFont() && GetFont()->GetResourceHandle())
 563       oldFont = ::SelectObject(dc, (HFONT) GetFont()->GetResourceHandle());
 564
 565     GetTextMetrics(dc, &lpTextMetric);
 566     int i;
 567     for (i = 0; i < m_noItems; i++)
 568     {
 569       int len = (int)SendMessage(hwnd, LB_GETTEXT, i, (LONG)wxBuffer);
 570       wxBuffer[len] = 0;
 571       SIZE extentXY;
 572       ::GetTextExtentPoint(dc, (LPSTR)wxBuffer, len, &extentXY);
 573       int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
 574       if (extentX > largestExtent)
 575         largestExtent = extentX;
 576     }
 577     if (oldFont)
 578       ::SelectObject(dc, oldFont);
 579
 580     ReleaseDC(hwnd, dc);
 581     SendMessage(hwnd, LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
 582   }
 583 }
 584
 585 void
 586 wxListBox::InsertItems(int nItems, const wxString items[], int pos)
 587 {
 588   int i;
 589   for (i = 0; i < nItems; i++)
 590     ListBox_InsertString(hwnd, i + pos, items[i]);
 591   m_noItems += nItems;
 592
 593   #if USE_OWNER_DRAWN
 594     if ( m_windowStyle & wxLB_OWNERDRAW ) {
 595       for ( i = 0; i < nItems; i++ ) {
 596         wxOwnerDrawn *pNewItem = CreateItem((uint)(pos + i));
 597         pNewItem->SetName(items[i]);
 598         m_aItems.Insert(pNewItem, (uint)(pos + i));
 599         ListBox_SetItemData(hwnd, i, pNewItem);
 600       }
 601     }
 602   #endif
 603
 604   SetHorizontalExtent("");
 605 }
 606
 607 void wxListBox::SetString(int N, const wxString& s)
 608 {
 609   int sel = GetSelection();
 610
 611   char *oldData = (char *)wxListBox::GetClientData(N);
 612
 613   SendMessage(hwnd, LB_DELETESTRING, N, 0);
 614
 615   int newN = N;
 616   if (N == (m_noItems - 1))
 617     newN = -1;
 618
 619   SendMessage(hwnd, LB_INSERTSTRING, newN, (LPARAM) (const char *)s);
 620   if (oldData)
 621     wxListBox::SetClientData(N, oldData);
 622
 623   // Selection may have changed
 624   if (sel >= 0)
 625     SetSelection(sel);
 626
 627 #if       USE_OWNER_DRAWN
 628   if ( m_windowStyle & wxLB_OWNERDRAW )
 629           // update item's text
 630           m_aItems[N]->SetName(s);
 631 #endif  //USE_OWNER_DRAWN
 632 }
 633
 634 int wxListBox::Number (void) const
 635 {
 636   return m_noItems;
 637 }
 638
 639 // For single selection items only
 640 wxString wxListBox::GetStringSelection (void) const
 641 {
 642   int sel = GetSelection ();
 643   if (sel > -1)
 644     return this->GetString (sel);
 645   else
 646     return wxString("");
 647 }
 648
 649 bool wxListBox::SetStringSelection (const wxString& s, bool flag)
 650 {
 651   int sel = FindString (s);
 652   if (sel > -1)
 653     {
 654       SetSelection (sel, flag);
 655       return TRUE;
 656     }
 657   else
 658     return FALSE;
 659 }
 660
 661 // Is this the right thing? Won't setselection generate a command
 662 // event too? No! It'll just generate a setselection event.
 663 // But we still can't have this being called whenever a real command
 664 // is generated, because it sets the selection, which will already
 665 // have been done! (Unless we have an optional argument for calling
 666 // by the actual window system, or a separate function, ProcessCommand)
 667 void wxListBox::Command (wxCommandEvent & event)
 668 {
 669   if (event.m_extraLong)
 670     SetSelection (event.m_commandInt);
 671   else
 672     {
 673       Deselect (event.m_commandInt);
 674       return;
 675     }
 676   ProcessCommand (event);
 677 }
 678
 679 WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 680                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 681 {
 682 #if CTL3D
 683   if ( m_useCtl3D )
 684   {
 685     HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 686     return (WXHBRUSH) hbrush;
 687   }
 688 #endif
 689
 690   if (GetParent()->GetTransparentBackground())
 691     SetBkMode((HDC) pDC, TRANSPARENT);
 692   else
 693     SetBkMode((HDC) pDC, OPAQUE);
 694
 695   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 696   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 697
 698   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 699
 700   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 701   // has a zero usage count.
 702   backgroundBrush->RealizeResource();
 703   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 704 }
 705
 706 long wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 707 {
 708 #if 0
 709   switch (nMsg)
 710   {
 711         case WM_INITDIALOG:
 712         case WM_ACTIVATE:
 713         case WM_SETFOCUS:
 714         case WM_KILLFOCUS:
 715         case WM_CREATE:
 716         case WM_PAINT:
 717         case WM_QUERYDRAGICON:
 718         case WM_SIZE:
 719         case WM_RBUTTONDOWN:
 720         case WM_RBUTTONUP:
 721         case WM_RBUTTONDBLCLK:
 722         case WM_MBUTTONDOWN:
 723         case WM_MBUTTONUP:
 724         case WM_MBUTTONDBLCLK:
 725         case WM_LBUTTONDOWN:
 726         case WM_LBUTTONUP:
 727         case WM_LBUTTONDBLCLK:
 728         case WM_MOUSEMOVE:
 729         case WM_COMMAND:
 730         case WM_NOTIFY:
 731         case WM_DESTROY:
 732         case WM_MENUSELECT:
 733         case WM_INITMENUPOPUP:
 734         case WM_DRAWITEM:
 735         case WM_MEASUREITEM:
 736         case WM_KEYDOWN:
 737         case WM_KEYUP:
 738         case WM_CHAR: // Always an ASCII character
 739         case WM_HSCROLL:
 740         case WM_VSCROLL:
 741         case WM_CTLCOLORBTN:
 742         case WM_CTLCOLORDLG:
 743         case WM_CTLCOLORLISTBOX:
 744         case WM_CTLCOLORMSGBOX:
 745         case WM_CTLCOLORSCROLLBAR:
 746         case WM_CTLCOLORSTATIC:
 747         case WM_CTLCOLOREDIT:
 748         case WM_SYSCOLORCHANGE:
 749         case WM_ERASEBKGND:
 750         case WM_MDIACTIVATE:
 751         case WM_DROPFILES:
 752         case WM_QUERYENDSESSION:
 753         case WM_CLOSE:
 754         case WM_GETMINMAXINFO:
 755                 case WM_NCHITTEST:
 756             return MSWDefWindowProc(nMsg, wParam, lParam );
 757     }
 758 #endif
 759
 760   return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 761 }
 762
 763 #if USE_OWNER_DRAWN
 764
 765 // drawing
 766 // -------
 767
 768 // space beneath/above each row in pixels
 769 // "standard" checklistbox use 1 here, some might prefer 2. 0 is ugly.
 770 #define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
 771
 772 // the height is the same for all items
 773 // ## should be changed for LBS_OWNERDRAWVARIABLE style listboxes
 774 //    NB: can't forward this to wxListBoxItem because LB_SETITEMDATA
 775 //        message is not yet sent when we get here!
 776 bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 777 {
 778   // only owner-drawn control should receive this message
 779   wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 780
 781   MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 782
 783   wxDC dc;
 784   dc.SetHDC((WXHDC)CreateIC("DISPLAY", NULL, NULL, 0));
 785   dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
 786
 787   pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
 788   pStruct->itemWidth  = dc.GetCharWidth();
 789
 790   return TRUE;
 791 }
 792
 793 // forward the message to the appropriate item
 794 bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 795 {
 796   // only owner-drawn control should receive this message
 797   wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 798
 799   DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
 800   wxListBoxItem *pItem = (wxListBoxItem *)SendMessage(hwnd, LB_GETITEMDATA,
 801                                                       pStruct->itemID, 0);
 802
 803   wxCHECK( (int)pItem != LB_ERR, FALSE );
 804
 805   wxDC dc;
 806   dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
 807   wxRect rect(pStruct->rcItem.left, pStruct->rcItem.top,
 808               pStruct->rcItem.right - pStruct->rcItem.left,
 809               pStruct->rcItem.bottom - pStruct->rcItem.top);
 810
 811   return pItem->OnDrawItem(dc, rect,
 812                            (wxOwnerDrawn::wxODAction)pStruct->itemAction,
 813                            (wxOwnerDrawn::wxODStatus)pStruct->itemState);
 814 }
 815
 816 #endif
 817   // USE_OWNER_DRAWN