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, _T("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, _T(""), 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, _T(""), _T("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, _T("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(_T("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), _T("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     wxString buf;
 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
 373     // Attempt to have a look coherent with other platforms: We compute the
 374     // biggest toggle dim, then we align all 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             buf = wxGetWindowText(m_radioButtons[i]);
 387             GetTextExtent(buf, &current_width, &cyf);
 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
 397         if (maxWidth<eachWidth)
 398             maxWidth = eachWidth;
 399         if (maxHeight<eachHeight)
 400             maxHeight = eachHeight;
 401     }
 402
 403     if (m_hWnd)
 404     {
 405         int totWidth;
 406         int totHeight;
 407
 408         int nbHor = GetNumHor(),
 409         nbVer = GetNumVer();
 410
 411         // this formula works, but I don't know why.
 412         // Please, be sure what you do if you modify it!!
 413         if (m_radioWidth[0]<0)
 414             totHeight = (nbVer * maxHeight) + cy1/2;
 415         else
 416             totHeight = nbVer * (maxHeight+cy1/2);
 417         totWidth  = nbHor * (maxWidth+cx1);
 418
 419         int extraHeight = cy1;
 420
 421 #if !CTL3D
 422         // Requires a bigger group box in plain Windows
 423         extraHeight *= 3;
 424         extraHeight /= 2;
 425 #endif
 426
 427         MoveWindow(GetHwnd(), x_offset, y_offset,
 428                 totWidth+cx1, totHeight+extraHeight,
 429                 TRUE);
 430
 431         x_offset += cx1;
 432         y_offset += cy1;
 433     }
 434
 435 #if (!CTL3D)
 436     y_offset += (int)(cy1/2); // Fudge factor since buttons overlapped label
 437     // JACS 2/12/93. CTL3D draws group label quite high.
 438 #endif
 439     int startX = x_offset;
 440     int startY = y_offset;
 441
 442     for ( i = 0 ; i < m_noItems; i++)
 443     {
 444         // Bidimensional radio adjustment
 445         if (i&&((i%m_majorDim)==0)) // Why is this omitted for i = 0?
 446         {
 447             if (m_windowStyle & wxRA_VERTICAL)
 448             {
 449                 y_offset = startY;
 450                 x_offset += maxWidth + cx1;
 451             }
 452             else
 453             {
 454                 x_offset = startX;
 455                 y_offset += maxHeight;
 456                 if (m_radioWidth[0]>0)
 457                     y_offset += cy1/2;
 458             }
 459         }
 460         int eachWidth;
 461         int eachHeight;
 462         if (m_radioWidth[i]<0)
 463         {
 464             // It's a labeled item
 465             buf = wxGetWindowText(m_radioButtons[i]);
 466             GetTextExtent(buf, &current_width, &cyf);
 467
 468             // How do we find out radio button bitmap size!!
 469             // By adjusting them carefully, manually :-)
 470             eachWidth = (int)(current_width + RADIO_SIZE);
 471             eachHeight = (int)((3*cyf)/2);
 472         }
 473         else
 474         {
 475             eachWidth = m_radioWidth[i];
 476             eachHeight = m_radioHeight[i];
 477         }
 478
 479         MoveWindow((HWND)m_radioButtons[i], x_offset, y_offset,
 480                    eachWidth, eachHeight,
 481                    TRUE);
 482
 483         if (m_windowStyle & wxRA_SPECIFY_ROWS)
 484         {
 485             y_offset += maxHeight;
 486             if (m_radioWidth[0]>0)
 487                 y_offset += cy1/2;
 488         }
 489         else
 490             x_offset += maxWidth + cx1;
 491     }
 492 }
 493
 494 void wxRadioBox::GetSize(int *width, int *height) const
 495 {
 496     RECT rect;
 497     rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 498
 499     if (m_hWnd)
 500         wxFindMaxSize(m_hWnd, &rect);
 501
 502     int i;
 503     for (i = 0; i < m_noItems; i++)
 504         wxFindMaxSize(m_radioButtons[i], &rect);
 505
 506     *width = rect.right - rect.left;
 507     *height = rect.bottom - rect.top;
 508 }
 509
 510 void wxRadioBox::GetPosition(int *x, int *y) const
 511 {
 512     wxWindow *parent = GetParent();
 513     RECT rect;
 514     rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 515
 516     int i;
 517     for (i = 0; i < m_noItems; i++)
 518         wxFindMaxSize(m_radioButtons[i], &rect);
 519
 520     if (m_hWnd)
 521         wxFindMaxSize(m_hWnd, &rect);
 522
 523     // Since we now have the absolute screen coords,
 524     // if there's a parent we must subtract its top left corner
 525     POINT point;
 526     point.x = rect.left;
 527     point.y = rect.top;
 528     if (parent)
 529     {
 530         ::ScreenToClient((HWND) parent->GetHWND(), &point);
 531     }
 532     // We may be faking the client origin.
 533     // So a window that's really at (0, 30) may appear
 534     // (to wxWin apps) to be at (0, 0).
 535     if (GetParent())
 536     {
 537         wxPoint pt(GetParent()->GetClientAreaOrigin());
 538         point.x -= pt.x;
 539         point.y -= pt.y;
 540     }
 541
 542     *x = point.x;
 543     *y = point.y;
 544 }
 545
 546 void wxRadioBox::SetFocus()
 547 {
 548     if (m_noItems > 0)
 549     {
 550         if (m_selectedButton == -1)
 551             ::SetFocus((HWND) m_radioButtons[0]);
 552         else
 553             ::SetFocus((HWND) m_radioButtons[m_selectedButton]);
 554     }
 555
 556 }
 557
 558 bool wxRadioBox::Show(bool show)
 559 {
 560     if ( !wxControl::Show(show) )
 561         return FALSE;
 562
 563     int nCmdShow = show ? SW_SHOW : SW_HIDE;
 564     for ( int i = 0; i < m_noItems; i++ )
 565     {
 566         ::ShowWindow((HWND)m_radioButtons[i], nCmdShow);
 567     }
 568
 569     return TRUE;
 570 }
 571
 572 // Enable a specific button
 573 void wxRadioBox::Enable(int item, bool enable)
 574 {
 575     wxCHECK_RET( item >= 0 && item < m_noItems,
 576                  _T("invalid item in wxRadioBox::Enable()") );
 577
 578     ::EnableWindow((HWND) m_radioButtons[item], enable);
 579 }
 580
 581 // Enable all controls
 582 bool wxRadioBox::Enable(bool enable)
 583 {
 584     if ( !wxControl::Enable(enable) )
 585         return FALSE;
 586
 587     for (int i = 0; i < m_noItems; i++)
 588         ::EnableWindow((HWND) m_radioButtons[i], enable);
 589
 590     return TRUE;
 591 }
 592
 593 // Show a specific button
 594 void wxRadioBox::Show(int item, bool show)
 595 {
 596     wxCHECK_RET( item >= 0 && item < m_noItems,
 597                  _T("invalid item in wxRadioBox::Show()") );
 598
 599     ::ShowWindow((HWND)m_radioButtons[item], show ? SW_SHOW : SW_HIDE);
 600 }
 601
 602 WXHBRUSH wxRadioBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 603         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 604 {
 605 #if wxUSE_CTL3D
 606     if ( m_useCtl3D )
 607     {
 608         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 609         return (WXHBRUSH) hbrush;
 610     }
 611 #endif
 612
 613     if (GetParent()->GetTransparentBackground())
 614         SetBkMode((HDC) pDC, TRANSPARENT);
 615     else
 616         SetBkMode((HDC) pDC, OPAQUE);
 617
 618     ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 619     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 620
 621     wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 622
 623     return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 624 }
 625
 626 // For single selection items only
 627 wxString wxRadioBox::GetStringSelection() const
 628 {
 629     wxString result;
 630     int sel = GetSelection();
 631     if (sel > -1)
 632         result = GetString(sel);
 633
 634     return result;
 635 }
 636
 637 bool wxRadioBox::SetStringSelection(const wxString& s)
 638 {
 639     int sel = FindString (s);
 640     if (sel > -1)
 641     {
 642         SetSelection (sel);
 643         return TRUE;
 644     }
 645     else
 646         return FALSE;
 647 }
 648
 649 bool wxRadioBox::ContainsHWND(WXHWND hWnd) const
 650 {
 651     int i;
 652     for (i = 0; i < Number(); i++)
 653     {
 654         if (GetRadioButtons()[i] == hWnd)
 655             return TRUE;
 656     }
 657
 658     return FALSE;
 659 }
 660
 661 void wxRadioBox::Command (wxCommandEvent & event)
 662 {
 663     SetSelection (event.m_commandInt);
 664     ProcessCommand (event);
 665 }
 666
 667 long wxRadioBox::MSWWindowProc(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
 668 {
 669     long rc = 0;
 670     bool processed = FALSE;
 671
 672     switch ( msg )
 673     {
 674         case WM_NCHITTEST:
 675             {
 676                 int xPos = LOWORD(lParam);  // horizontal position of cursor
 677                 int yPos = HIWORD(lParam);  // vertical position of cursor
 678
 679                 ScreenToClient(&xPos, &yPos);
 680
 681                 // Make sure you can drag by the top of the groupbox, but let
 682                 // other (enclosed) controls get mouse events also
 683                 if ( yPos < 10 )
 684                 {
 685                     rc = HTCLIENT;
 686                     processed = TRUE;
 687                 }
 688             }
 689             break;
 690     }
 691
 692     if ( !processed )
 693         rc = wxControl::MSWWindowProc(msg, wParam, lParam);
 694
 695     return rc;
 696 }
 697
 698 void wxRadioBox::SubclassRadioButton(WXHWND hWndBtn)
 699 {
 700 #ifdef __WIN32__
 701     HWND hwndBtn = (HWND)hWndBtn;
 702
 703     if ( !s_wndprocRadioBtn )
 704         s_wndprocRadioBtn = (WXFARPROC)::GetWindowLong(hwndBtn, GWL_WNDPROC);
 705
 706     // No GWL_USERDATA in Win16, so omit this subclassing.
 707     ::SetWindowLong(hwndBtn, GWL_WNDPROC, (long)wxRadioBtnWndProc);
 708     ::SetWindowLong(hwndBtn, GWL_USERDATA, (long)this);
 709 #endif // __WIN32__
 710 }
 711
 712 void wxRadioBox::SendNotificationEvent()
 713 {
 714     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, m_windowId);
 715     event.SetInt( m_selectedButton );
 716     event.SetEventObject( this );
 717     ProcessCommand(event);
 718 }
 719
 720 // ---------------------------------------------------------------------------
 721 // window proc for radio buttons
 722 // ---------------------------------------------------------------------------
 723
 724 #ifdef __WIN32__
 725
 726 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hwnd,
 727                                            UINT msg,
 728                                            WPARAM wParam,
 729                                            LPARAM lParam)
 730 {
 731     bool processed = TRUE;
 732     if ( msg != WM_KEYDOWN )
 733         processed = FALSE;
 734
 735     if ( processed )
 736     {
 737         wxRadioBox *radiobox = (wxRadioBox *)::GetWindowLong(hwnd, GWL_USERDATA);
 738
 739         wxCHECK_MSG( radiobox, 0, _T("radio button without radio box?") );
 740
 741         int sel = radiobox->GetSelection();
 742
 743         switch ( wParam )
 744         {
 745             case VK_UP:
 746                 sel--;
 747                 break;
 748
 749             case VK_LEFT:
 750                 sel -= radiobox->GetNumVer();
 751                 break;
 752
 753             case VK_DOWN:
 754                 sel++;
 755                 break;
 756
 757             case VK_RIGHT:
 758                 sel += radiobox->GetNumVer();
 759                 break;
 760
 761             case VK_TAB:
 762                 {
 763                     wxNavigationKeyEvent event;
 764                     event.SetDirection(!(::GetKeyState(VK_SHIFT) & 0x100));
 765                     event.SetWindowChange(FALSE);
 766                     event.SetEventObject(radiobox);
 767
 768                     if ( radiobox->GetEventHandler()->ProcessEvent(event) )
 769                         return 0;
 770                 }
 771                 // fall through
 772
 773             default:
 774                 processed = FALSE;
 775         }
 776
 777         if ( processed )
 778         {
 779             if ( sel >= 0 && sel < radiobox->Number() )
 780             {
 781                 radiobox->SetSelection(sel);
 782
 783                 // emulate the button click
 784                 radiobox->SendNotificationEvent();
 785             }
 786         }
 787     }
 788
 789     if ( !processed )
 790         return ::CallWindowProc(CASTWNDPROC s_wndprocRadioBtn, hwnd, msg, wParam, lParam);
 791     else
 792         return 0;
 793 }
 794
 795 #endif // __WIN32__
 796