src/msw/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobox.cpp
   3 // Purpose:     wxRadioBox
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "radiobox.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include <stdio.h>
  33     #include "wx/setup.h"
  34     #include "wx/bitmap.h"
  35     #include "wx/brush.h"
  36     #include "wx/radiobox.h"
  37 #endif
  38
  39 #include "wx/msw/private.h"
  40
  41 #if !USE_SHARED_LIBRARY
  42     IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  43 #endif
  44
  45 // ---------------------------------------------------------------------------
  46 // private functions
  47 // ---------------------------------------------------------------------------
  48
  49 // wnd proc for radio buttons
  50 #ifdef __WIN32__
  51 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hWnd,
  52                                            UINT message,
  53                                            WPARAM wParam,
  54                                            LPARAM lParam);
  55
  56 // ---------------------------------------------------------------------------
  57 // global vars
  58 // ---------------------------------------------------------------------------
  59
  60 // the pointer to standard radio button wnd proc
  61 static WXFARPROC s_wndprocRadioBtn = (WXFARPROC)NULL;
  62
  63 #endif // __WIN32__
  64
  65 // ===========================================================================
  66 // implementation
  67 // ===========================================================================
  68
  69 // ---------------------------------------------------------------------------
  70 // wxRadioBox
  71 // ---------------------------------------------------------------------------
  72
  73 int wxRadioBox::GetNumVer() const
  74 {
  75     if ( m_windowStyle & wxRA_SPECIFY_ROWS )
  76     {
  77         return m_majorDim;
  78     }
  79     else
  80     {
  81         return (m_noItems + m_majorDim - 1)/m_majorDim;
  82     }
  83 }
  84
  85 int wxRadioBox::GetNumHor() const
  86 {
  87     if ( m_windowStyle & wxRA_SPECIFY_ROWS )
  88     {
  89         return (m_noItems + m_majorDim - 1)/m_majorDim;
  90     }
  91     else
  92     {
  93         return m_majorDim;
  94     }
  95 }
  96
  97 bool wxRadioBox::MSWCommand(WXUINT cmd, WXWORD id)
  98 {
  99     if ( cmd == BN_CLICKED )
 100     {
 101         int selectedButton = -1;
 102
 103         for ( int i = 0; i < m_noItems; i++ )
 104         {
 105             if ( id == wxGetWindowId(m_radioButtons[i]) )
 106             {
 107                 selectedButton = i;
 108
 109                 break;
 110             }
 111         }
 112
 113         wxASSERT_MSG( selectedButton != -1, "click from alien button?" );
 114
 115         if ( selectedButton != m_selectedButton )
 116         {
 117             m_selectedButton = selectedButton;
 118
 119             SendNotificationEvent();
 120         }
 121         //else: don't generate events when the selection doesn't change
 122
 123         return TRUE;
 124     }
 125     else
 126         return FALSE;
 127 }
 128
 129 #if WXWIN_COMPATIBILITY
 130 wxRadioBox::wxRadioBox(wxWindow *parent, wxFunction func, const char *title,
 131         int x, int y, int width, int height,
 132         int n, char **choices,
 133         int majorDim, long style, const char *name)
 134 {
 135     wxString *choices2 = new wxString[n];
 136     for ( int i = 0; i < n; i ++) choices2[i] = choices[i];
 137     Create(parent, -1, title, wxPoint(x, y), wxSize(width, height), n, choices2, majorDim, style,
 138             wxDefaultValidator, name);
 139     Callback(func);
 140     delete choices2;
 141 }
 142
 143 #endif
 144
 145 // Radio box item
 146 wxRadioBox::wxRadioBox()
 147 {
 148     m_selectedButton = -1;
 149     m_noItems = 0;
 150     m_noRowsOrCols = 0;
 151     m_radioButtons = NULL;
 152     m_majorDim = 0;
 153     m_radioWidth = NULL;
 154     m_radioHeight = NULL;
 155 }
 156
 157 bool wxRadioBox::Create(wxWindow *parent, wxWindowID id, const wxString& title,
 158         const wxPoint& pos, const wxSize& size,
 159         int n, const wxString choices[],
 160         int majorDim, long style,
 161         const wxValidator& val, const wxString& name)
 162 {
 163     m_selectedButton = -1;
 164     m_noItems = n;
 165
 166     SetName(name);
 167     SetValidator(val);
 168
 169     parent->AddChild(this);
 170     m_backgroundColour = parent->GetBackgroundColour();
 171     m_foregroundColour = parent->GetForegroundColour();
 172
 173     m_windowStyle = (long&)style;
 174
 175     int x = pos.x;
 176     int y = pos.y;
 177     int width = size.x;
 178     int height = size.y;
 179
 180     if (id == -1)
 181         m_windowId = NewControlId();
 182     else
 183         m_windowId = id;
 184
 185     if ( majorDim == 0 )
 186         m_majorDim = n;
 187     else
 188         m_majorDim = majorDim;
 189     m_noRowsOrCols = majorDim;
 190
 191     long msStyle = GROUP_FLAGS;
 192
 193     bool want3D;
 194     WXDWORD exStyle = Determine3DEffects(0, &want3D);
 195
 196     HWND hwndParent = (HWND)parent->GetHWND();
 197
 198     m_hWnd = (WXHWND)::CreateWindowEx
 199                         (
 200                          (DWORD)exStyle,
 201                          GROUP_CLASS,
 202                          title,
 203                          msStyle,
 204                          0, 0, 0, 0,
 205                          hwndParent,
 206                          (HMENU)m_windowId,
 207                          wxGetInstance(),
 208                          NULL
 209                         );
 210
 211 #if wxUSE_CTL3D
 212     if (want3D)
 213     {
 214         Ctl3dSubclassCtl((HWND)m_hWnd);
 215         m_useCtl3D = TRUE;
 216     }
 217 #endif // wxUSE_CTL3D
 218
 219     SetFont(parent->GetFont());
 220
 221     SubclassWin(m_hWnd);
 222
 223     // Some radio boxes test consecutive id.
 224     (void)NewControlId();
 225     m_radioButtons = new WXHWND[n];
 226     m_radioWidth = new int[n];
 227     m_radioHeight = new int[n];
 228     int i;
 229     for (i = 0; i < n; i++)
 230     {
 231         m_radioWidth[i] = m_radioHeight[i] = -1;
 232         long groupStyle = 0;
 233         if ( i == 0 && style == 0 )
 234             groupStyle = WS_GROUP;
 235         long newId = NewControlId();
 236         long msStyle = groupStyle | RADIO_FLAGS;
 237
 238         HWND hwndBtn = CreateWindowEx(exStyle, RADIO_CLASS,
 239                                       choices[i], msStyle,
 240                                       0,0,0,0,
 241                                       hwndParent,
 242                                       (HMENU)newId, wxGetInstance(),
 243                                       NULL);
 244
 245         m_radioButtons[i] = (WXHWND)hwndBtn;
 246
 247         SubclassRadioButton((WXHWND)hwndBtn);
 248
 249         wxFont& font = GetFont();
 250         if ( font.Ok() )
 251         {
 252             SendMessage(hwndBtn, WM_SETFONT,
 253                         (WPARAM)font.GetResourceHandle(), 0L);
 254         }
 255
 256         m_subControls.Append((wxObject *)(WXWORD)newId);
 257     }
 258
 259     // Create a dummy radio control to end the group.
 260     (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP | RADIO_FLAGS,
 261                          0, 0, 0, 0, hwndParent,
 262                          (HMENU)NewControlId(), wxGetInstance(), NULL);
 263
 264     SetSelection(0);
 265
 266     SetSize(x, y, width, height);
 267
 268     return TRUE;
 269 }
 270
 271 wxRadioBox::~wxRadioBox()
 272 {
 273     m_isBeingDeleted = TRUE;
 274
 275     if (m_radioButtons)
 276     {
 277         int i;
 278         for (i = 0; i < m_noItems; i++)
 279             ::DestroyWindow((HWND)m_radioButtons[i]);
 280         delete[] m_radioButtons;
 281     }
 282
 283     if (m_radioWidth)
 284         delete[] m_radioWidth;
 285     if (m_radioHeight)
 286         delete[] m_radioHeight;
 287
 288 }
 289
 290 wxString wxRadioBox::GetLabel(int item) const
 291 {
 292     wxCHECK_MSG( item >= 0 && item < m_noItems, "", "invalid radiobox index" );
 293
 294     return wxGetWindowText(m_radioButtons[item]);
 295 }
 296
 297 void wxRadioBox::SetLabel(int item, const wxString& label)
 298 {
 299     wxCHECK_RET( item >= 0 && item < m_noItems, "invalid radiobox index" );
 300
 301     m_radioWidth[item] = m_radioHeight[item] = -1;
 302     SetWindowText((HWND)m_radioButtons[item], label.c_str());
 303 }
 304
 305 void wxRadioBox::SetLabel(int item, wxBitmap *bitmap)
 306 {
 307     /*
 308        m_radioWidth[item] = bitmap->GetWidth() + FB_MARGIN;
 309        m_radioHeight[item] = bitmap->GetHeight() + FB_MARGIN;
 310      */
 311     wxFAIL_MSG("not implemented");
 312 }
 313
 314 int wxRadioBox::FindString(const wxString& s) const
 315 {
 316     for (int i = 0; i < m_noItems; i++)
 317     {
 318         if ( s == wxGetWindowText(m_radioButtons[i]) )
 319             return i;
 320     }
 321
 322     return wxNOT_FOUND;
 323 }
 324
 325 void wxRadioBox::SetSelection(int N)
 326 {
 327     wxCHECK_RET( (N >= 0) && (N < m_noItems), "invalid radiobox index" );
 328
 329     // Following necessary for Win32s, because Win32s translate BM_SETCHECK
 330     if (m_selectedButton >= 0 && m_selectedButton < m_noItems)
 331         ::SendMessage((HWND) m_radioButtons[m_selectedButton], BM_SETCHECK, 0, 0L);
 332
 333     ::SendMessage((HWND)m_radioButtons[N], BM_SETCHECK, 1, 0L);
 334     ::SetFocus((HWND)m_radioButtons[N]);
 335
 336     m_selectedButton = N;
 337 }
 338
 339 // Get single selection, for single choice list items
 340 int wxRadioBox::GetSelection() const
 341 {
 342     return m_selectedButton;
 343 }
 344
 345 // Find string for position
 346 wxString wxRadioBox::GetString(int N) const
 347 {
 348     return wxGetWindowText(m_radioButtons[N]);
 349 }
 350
 351 // Restored old code.
 352 void wxRadioBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 353 {
 354   int currentX, currentY;
 355   GetPosition(&currentX, &currentY);
 356   int xx = x;
 357   int yy = y;
 358
 359   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 360     xx = currentX;
 361   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 362     yy = currentY;
 363
 364   char buf[400];
 365
 366   int y_offset = yy;
 367   int x_offset = xx;
 368   int current_width, cyf;
 369
 370   int cx1,cy1;
 371   wxGetCharSize(m_hWnd, &cx1, &cy1, & GetFont());
 372   // Attempt to have a look coherent with other platforms:
 373   // We compute the biggest toggle dim, then we align all
 374   // items according this value.
 375   int maxWidth =  -1;
 376   int maxHeight = -1;
 377
 378   int i;
 379   for (i = 0 ; i < m_noItems; i++)
 380   {
 381     int eachWidth;
 382     int eachHeight;
 383     if (m_radioWidth[i]<0)
 384     {
 385       // It's a labelled toggle
 386       GetWindowText((HWND) m_radioButtons[i], buf, 300);
 387       GetTextExtent(buf, &current_width, &cyf,NULL,NULL, & GetFont());
 388       eachWidth = (int)(current_width + RADIO_SIZE);
 389       eachHeight = (int)((3*cyf)/2);
 390     }
 391     else
 392     {
 393       eachWidth = m_radioWidth[i];
 394       eachHeight = m_radioHeight[i];
 395     }
 396     if (maxWidth<eachWidth) maxWidth = eachWidth;
 397     if (maxHeight<eachHeight) maxHeight = eachHeight;
 398   }
 399
 400   if (m_hWnd)
 401   {
 402     int totWidth;
 403     int totHeight;
 404
 405     int nbHor = GetNumHor(),
 406         nbVer = GetNumVer();
 407
 408     // this formula works, but I don't know why.
 409     // Please, be sure what you do if you modify it!!
 410     if (m_radioWidth[0]<0)
 411       totHeight = (nbVer * maxHeight) + cy1/2;
 412     else
 413       totHeight = nbVer * (maxHeight+cy1/2);
 414     totWidth  = nbHor * (maxWidth+cx1);
 415
 416 #if (!CTL3D)
 417     // Requires a bigger group box in plain Windows
 418     MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+(3*cy1)/2,TRUE);
 419 #else
 420     MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+cy1,TRUE);
 421 #endif
 422     x_offset += cx1;
 423     y_offset += cy1;
 424   }
 425
 426 #if (!CTL3D)
 427   y_offset += (int)(cy1/2); // Fudge factor since buttons overlapped label
 428                             // JACS 2/12/93. CTL3D draws group label quite high.
 429 #endif
 430   int startX = x_offset;
 431   int startY = y_offset;
 432
 433   for ( i = 0 ; i < m_noItems; i++)
 434   {
 435     // Bidimensional radio adjustment
 436     if (i&&((i%m_majorDim)==0)) // Why is this omitted for i = 0?
 437     {
 438       if (m_windowStyle & wxRA_VERTICAL)
 439       {
 440         y_offset = startY;
 441         x_offset += maxWidth + cx1;
 442       }
 443       else
 444       {
 445         x_offset = startX;
 446         y_offset += maxHeight;
 447         if (m_radioWidth[0]>0)
 448           y_offset += cy1/2;
 449       }
 450     }
 451     int eachWidth;
 452     int eachHeight;
 453     if (m_radioWidth[i]<0)
 454     {
 455       // It's a labeled item
 456       GetWindowText((HWND) m_radioButtons[i], buf, 300);
 457       GetTextExtent(buf, &current_width, &cyf,NULL,NULL, & GetFont());
 458
 459       // How do we find out radio button bitmap size!!
 460       // By adjusting them carefully, manually :-)
 461       eachWidth = (int)(current_width + RADIO_SIZE);
 462       eachHeight = (int)((3*cyf)/2);
 463     }
 464     else
 465     {
 466       eachWidth = m_radioWidth[i];
 467       eachHeight = m_radioHeight[i];
 468     }
 469
 470     MoveWindow((HWND) m_radioButtons[i],x_offset,y_offset,eachWidth,eachHeight,TRUE);
 471     if (m_windowStyle & wxRA_SPECIFY_ROWS)
 472     {
 473       y_offset += maxHeight;
 474       if (m_radioWidth[0]>0)
 475         y_offset += cy1/2;
 476     }
 477     else
 478       x_offset += maxWidth + cx1;
 479   }
 480 }
 481
 482
 483 void wxRadioBox::GetSize(int *width, int *height) const
 484 {
 485     RECT rect;
 486     rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 487
 488     if (m_hWnd)
 489         wxFindMaxSize(m_hWnd, &rect);
 490
 491     int i;
 492     for (i = 0; i < m_noItems; i++)
 493         wxFindMaxSize(m_radioButtons[i], &rect);
 494
 495     *width = rect.right - rect.left;
 496     *height = rect.bottom - rect.top;
 497 }
 498
 499 void wxRadioBox::GetPosition(int *x, int *y) const
 500 {
 501     wxWindow *parent = GetParent();
 502     RECT rect;
 503     rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 504
 505     int i;
 506     for (i = 0; i < m_noItems; i++)
 507         wxFindMaxSize(m_radioButtons[i], &rect);
 508
 509     if (m_hWnd)
 510         wxFindMaxSize(m_hWnd, &rect);
 511
 512     // Since we now have the absolute screen coords,
 513     // if there's a parent we must subtract its top left corner
 514     POINT point;
 515     point.x = rect.left;
 516     point.y = rect.top;
 517     if (parent)
 518     {
 519         ::ScreenToClient((HWND) parent->GetHWND(), &point);
 520     }
 521     // We may be faking the client origin.
 522     // So a window that's really at (0, 30) may appear
 523     // (to wxWin apps) to be at (0, 0).
 524     if (GetParent())
 525     {
 526         wxPoint pt(GetParent()->GetClientAreaOrigin());
 527         point.x -= pt.x;
 528         point.y -= pt.y;
 529     }
 530
 531     *x = point.x;
 532     *y = point.y;
 533 }
 534
 535 void wxRadioBox::SetFocus()
 536 {
 537     if (m_noItems > 0)
 538     {
 539         if (m_selectedButton == -1)
 540             ::SetFocus((HWND) m_radioButtons[0]);
 541         else
 542             ::SetFocus((HWND) m_radioButtons[m_selectedButton]);
 543     }
 544
 545 }
 546
 547 bool wxRadioBox::Show(bool show)
 548 {
 549     if ( !wxControl::Show(show) )
 550         return FALSE;
 551
 552     int nCmdShow = show ? SW_SHOW : SW_HIDE;
 553     for ( int i = 0; i < m_noItems; i++ )
 554     {
 555         ::ShowWindow((HWND)m_radioButtons[i], nCmdShow);
 556     }
 557
 558     return TRUE;
 559 }
 560
 561 // Enable a specific button
 562 void wxRadioBox::Enable(int item, bool enable)
 563 {
 564     wxCHECK_RET( item >= 0 && item < m_noItems,
 565                  _T("invalid item in wxRadioBox::Enable()") );
 566
 567     ::EnableWindow((HWND) m_radioButtons[item], enable);
 568 }
 569
 570 // Enable all controls
 571 bool wxRadioBox::Enable(bool enable)
 572 {
 573     if ( !wxControl::Enable(enable) )
 574         return FALSE;
 575
 576     for (int i = 0; i < m_noItems; i++)
 577         ::EnableWindow((HWND) m_radioButtons[i], enable);
 578
 579     return TRUE;
 580 }
 581
 582 // Show a specific button
 583 void wxRadioBox::Show(int item, bool show)
 584 {
 585     wxCHECK_RET( item >= 0 && item < m_noItems,
 586                  _T("invalid item in wxRadioBox::Show()") );
 587
 588     ::ShowWindow((HWND)m_radioButtons[item], show ? SW_SHOW : SW_HIDE);
 589 }
 590
 591 WXHBRUSH wxRadioBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 592         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 593 {
 594 #if wxUSE_CTL3D
 595     if ( m_useCtl3D )
 596     {
 597         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 598         return (WXHBRUSH) hbrush;
 599     }
 600 #endif
 601
 602     if (GetParent()->GetTransparentBackground())
 603         SetBkMode((HDC) pDC, TRANSPARENT);
 604     else
 605         SetBkMode((HDC) pDC, OPAQUE);
 606
 607     ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 608     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 609
 610     wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 611
 612     return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 613 }
 614
 615 // For single selection items only
 616 wxString wxRadioBox::GetStringSelection() const
 617 {
 618     wxString result;
 619     int sel = GetSelection();
 620     if (sel > -1)
 621         result = GetString(sel);
 622
 623     return result;
 624 }
 625
 626 bool wxRadioBox::SetStringSelection(const wxString& s)
 627 {
 628     int sel = FindString (s);
 629     if (sel > -1)
 630     {
 631         SetSelection (sel);
 632         return TRUE;
 633     }
 634     else
 635         return FALSE;
 636 }
 637
 638 bool wxRadioBox::ContainsHWND(WXHWND hWnd) const
 639 {
 640     int i;
 641     for (i = 0; i < Number(); i++)
 642     {
 643         if (GetRadioButtons()[i] == hWnd)
 644             return TRUE;
 645     }
 646
 647     return FALSE;
 648 }
 649
 650 void wxRadioBox::Command (wxCommandEvent & event)
 651 {
 652     SetSelection (event.m_commandInt);
 653     ProcessCommand (event);
 654 }
 655
 656 long wxRadioBox::MSWWindowProc(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
 657 {
 658     long rc = 0;
 659     bool processed = FALSE;
 660
 661     switch ( msg )
 662     {
 663         case WM_NCHITTEST:
 664             {
 665                 int xPos = LOWORD(lParam);  // horizontal position of cursor
 666                 int yPos = HIWORD(lParam);  // vertical position of cursor
 667
 668                 ScreenToClient(&xPos, &yPos);
 669
 670                 // Make sure you can drag by the top of the groupbox, but let
 671                 // other (enclosed) controls get mouse events also
 672                 if ( yPos < 10 )
 673                 {
 674                     rc = HTCLIENT;
 675                     processed = TRUE;
 676                 }
 677             }
 678             break;
 679     }
 680
 681     if ( !processed )
 682         rc = wxControl::MSWWindowProc(msg, wParam, lParam);
 683
 684     return rc;
 685 }
 686
 687 void wxRadioBox::SubclassRadioButton(WXHWND hWndBtn)
 688 {
 689 #ifdef __WIN32__
 690     HWND hwndBtn = (HWND)hWndBtn;
 691
 692     if ( !s_wndprocRadioBtn )
 693         s_wndprocRadioBtn = (WXFARPROC)::GetWindowLong(hwndBtn, GWL_WNDPROC);
 694
 695     // No GWL_USERDATA in Win16, so omit this subclassing.
 696     ::SetWindowLong(hwndBtn, GWL_WNDPROC, (long)wxRadioBtnWndProc);
 697     ::SetWindowLong(hwndBtn, GWL_USERDATA, (long)this);
 698 #endif // __WIN32__
 699 }
 700
 701 void wxRadioBox::SendNotificationEvent()
 702 {
 703     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, m_windowId);
 704     event.SetInt( m_selectedButton );
 705     event.SetEventObject( this );
 706     ProcessCommand(event);
 707 }
 708
 709 // ---------------------------------------------------------------------------
 710 // window proc for radio buttons
 711 // ---------------------------------------------------------------------------
 712
 713 #ifdef __WIN32__
 714
 715 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hwnd,
 716                                            UINT msg,
 717                                            WPARAM wParam,
 718                                            LPARAM lParam)
 719 {
 720     bool processed = TRUE;
 721     if ( msg != WM_KEYDOWN )
 722         processed = FALSE;
 723
 724     if ( processed )
 725     {
 726         wxRadioBox *radiobox = (wxRadioBox *)::GetWindowLong(hwnd, GWL_USERDATA);
 727
 728         wxCHECK_MSG( radiobox, 0, "radio button without radio box?" );
 729
 730         int sel = radiobox->GetSelection();
 731
 732         switch ( wParam )
 733         {
 734             case VK_UP:
 735                 sel--;
 736                 break;
 737
 738             case VK_LEFT:
 739                 sel -= radiobox->GetNumVer();
 740                 break;
 741
 742             case VK_DOWN:
 743                 sel++;
 744                 break;
 745
 746             case VK_RIGHT:
 747                 sel += radiobox->GetNumVer();
 748                 break;
 749
 750             case VK_TAB:
 751                 {
 752                     wxNavigationKeyEvent event;
 753                     event.SetDirection(!(::GetKeyState(VK_SHIFT) & 0x100));
 754                     event.SetWindowChange(FALSE);
 755                     event.SetEventObject(radiobox);
 756
 757                     if ( radiobox->GetEventHandler()->ProcessEvent(event) )
 758                         return 0;
 759                 }
 760                 // fall through
 761
 762             default:
 763                 processed = FALSE;
 764         }
 765
 766         if ( processed )
 767         {
 768             if ( sel >= 0 && sel < radiobox->Number() )
 769             {
 770                 radiobox->SetSelection(sel);
 771
 772                 // emulate the button click
 773                 radiobox->SendNotificationEvent();
 774             }
 775         }
 776     }
 777
 778     if ( !processed )
 779         return ::CallWindowProc(CASTWNDPROC s_wndprocRadioBtn, hwnd, msg, wParam, lParam);
 780     else
 781         return 0;
 782 }
 783
 784 #endif // __WIN32__
 785