src/msw/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/radiobox.cpp
   3 // Purpose:     wxRadioBox implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_RADIOBOX
  28
  29 #include "wx/radiobox.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/bitmap.h"
  33     #include "wx/brush.h"
  34     #include "wx/settings.h"
  35     #include "wx/log.h"
  36 #endif
  37
  38 #include "wx/msw/subwin.h"
  39
  40 #if wxUSE_TOOLTIPS
  41     #include "wx/tooltip.h"
  42 #endif // wxUSE_TOOLTIPS
  43
  44 // TODO: wxCONSTRUCTOR
  45 #if 0 // wxUSE_EXTENDED_RTTI
  46 WX_DEFINE_FLAGS( wxRadioBoxStyle )
  47
  48 wxBEGIN_FLAGS( wxRadioBoxStyle )
  49     // new style border flags, we put them first to
  50     // use them for streaming out
  51     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  52     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  53     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  54     wxFLAGS_MEMBER(wxBORDER_RAISED)
  55     wxFLAGS_MEMBER(wxBORDER_STATIC)
  56     wxFLAGS_MEMBER(wxBORDER_NONE)
  57
  58     // old style border flags
  59     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  60     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  61     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  62     wxFLAGS_MEMBER(wxRAISED_BORDER)
  63     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  64     wxFLAGS_MEMBER(wxBORDER)
  65
  66     // standard window styles
  67     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  68     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  69     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  70     wxFLAGS_MEMBER(wxWANTS_CHARS)
  71     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  72     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  73     wxFLAGS_MEMBER(wxVSCROLL)
  74     wxFLAGS_MEMBER(wxHSCROLL)
  75
  76     wxFLAGS_MEMBER(wxRA_SPECIFY_COLS)
  77     wxFLAGS_MEMBER(wxRA_SPECIFY_ROWS)
  78 wxEND_FLAGS( wxRadioBoxStyle )
  79
  80 IMPLEMENT_DYNAMIC_CLASS_XTI(wxRadioBox, wxControl,"wx/radiobox.h")
  81
  82 wxBEGIN_PROPERTIES_TABLE(wxRadioBox)
  83     wxEVENT_PROPERTY( Select , wxEVT_COMMAND_RADIOBOX_SELECTED , wxCommandEvent )
  84     wxPROPERTY_FLAGS( WindowStyle , wxRadioBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  85 wxEND_PROPERTIES_TABLE()
  86
  87 #else
  88 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  89 #endif
  90
  91 /*
  92     selection
  93     content
  94         label
  95         dimension
  96         item
  97 */
  98
  99 // ---------------------------------------------------------------------------
 100 // private functions
 101 // ---------------------------------------------------------------------------
 102
 103 // wnd proc for radio buttons
 104 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hWnd,
 105                                            UINT message,
 106                                            WPARAM wParam,
 107                                            LPARAM lParam);
 108
 109 // ---------------------------------------------------------------------------
 110 // global vars
 111 // ---------------------------------------------------------------------------
 112
 113 // the pointer to standard radio button wnd proc
 114 static WXFARPROC s_wndprocRadioBtn = (WXFARPROC)NULL;
 115
 116 // ===========================================================================
 117 // implementation
 118 // ===========================================================================
 119
 120 // ---------------------------------------------------------------------------
 121 // wxRadioBox creation
 122 // ---------------------------------------------------------------------------
 123
 124 // Radio box item
 125 void wxRadioBox::Init()
 126 {
 127     m_selectedButton = wxNOT_FOUND;
 128     m_radioButtons = NULL;
 129     m_dummyHwnd = NULL;
 130     m_radioWidth = NULL;
 131     m_radioHeight = NULL;
 132 }
 133
 134 bool wxRadioBox::Create(wxWindow *parent,
 135                         wxWindowID id,
 136                         const wxString& title,
 137                         const wxPoint& pos,
 138                         const wxSize& size,
 139                         int n,
 140                         const wxString choices[],
 141                         int majorDim,
 142                         long style,
 143                         const wxValidator& val,
 144                         const wxString& name)
 145 {
 146     // common initialization
 147     if ( !wxStaticBox::Create(parent, id, title, pos, size, style, name) )
 148         return false;
 149
 150     // the code elsewhere in this file supposes that either wxRA_SPECIFY_COLS
 151     // or wxRA_SPECIFY_ROWS is set, ensure that this is indeed the case
 152     if ( !(style & (wxRA_SPECIFY_ROWS | wxRA_SPECIFY_COLS)) )
 153         style |= wxRA_SPECIFY_COLS;
 154
 155 #if wxUSE_VALIDATORS
 156     SetValidator(val);
 157 #else
 158     wxUnusedVar(val);
 159 #endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS
 160
 161     // We need an extra one to keep track of the 'dummy' item we
 162     // create to end the radio group, so it will be destroyed and
 163     // it's id will be released.  But we want it separate from the
 164     // other buttons since the wxSubwindows will operate on it as
 165     // well and we just want to ignore it until destroying it.
 166     // For instance, we don't want the bounding box of the radio
 167     // buttons to include the dummy button
 168     m_radioButtons = new wxSubwindows(n);
 169
 170     m_radioWidth = new int[n];
 171     m_radioHeight = new int[n];
 172
 173     for ( int i = 0; i < n; i++ )
 174     {
 175         m_radioWidth[i] =
 176         m_radioHeight[i] = wxDefaultCoord;
 177         long styleBtn = BS_AUTORADIOBUTTON | WS_TABSTOP | WS_CHILD | WS_VISIBLE;
 178         if ( i == 0 )
 179             styleBtn |= WS_GROUP;
 180
 181         wxWindowIDRef subid = NewControlId();
 182
 183         HWND hwndBtn = ::CreateWindow(wxT("BUTTON"),
 184                                       choices[i].wx_str(),
 185                                       styleBtn,
 186                                       0, 0, 0, 0,   // will be set in SetSize()
 187                                       GetHwndOf(parent),
 188                                       (HMENU)wxUIntToPtr(subid.GetValue()),
 189                                       wxGetInstance(),
 190                                       NULL);
 191
 192         if ( !hwndBtn )
 193         {
 194             wxLogLastError(wxT("CreateWindow(radio btn)"));
 195
 196             return false;
 197         }
 198
 199         // Keep track of the subwindow
 200         m_radioButtons->Set(i, hwndBtn, subid);
 201
 202         SubclassRadioButton((WXHWND)hwndBtn);
 203
 204         // Also, make it a subcontrol of this control
 205         m_subControls.Add(subid);
 206     }
 207
 208     // Create a dummy radio control to end the group.
 209     m_dummyId = NewControlId();
 210
 211     m_dummyHwnd = (WXHWND)::CreateWindow(wxT("BUTTON"),
 212                          wxEmptyString,
 213                          WS_GROUP | BS_AUTORADIOBUTTON | WS_CHILD,
 214                          0, 0, 0, 0, GetHwndOf(parent),
 215                          (HMENU)wxUIntToPtr(m_dummyId.GetValue()),
 216                          wxGetInstance(), NULL);
 217
 218
 219     m_radioButtons->SetFont(GetFont());
 220
 221 #ifdef __WXWINCE__
 222     // Set the z-order correctly
 223     SetWindowPos(GetHwnd(), HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 224 #endif
 225
 226     SetMajorDim(majorDim == 0 ? n : majorDim, style);
 227     SetSelection(0);
 228     SetSize(pos.x, pos.y, size.x, size.y);
 229
 230     // Now that we have items determine what is the best size and set it.
 231     SetInitialSize(size);
 232
 233     return true;
 234 }
 235
 236 bool wxRadioBox::Create(wxWindow *parent,
 237                         wxWindowID id,
 238                         const wxString& title,
 239                         const wxPoint& pos,
 240                         const wxSize& size,
 241                         const wxArrayString& choices,
 242                         int majorDim,
 243                         long style,
 244                         const wxValidator& val,
 245                         const wxString& name)
 246 {
 247     wxCArrayString chs(choices);
 248     return Create(parent, id, title, pos, size, chs.GetCount(),
 249                   chs.GetStrings(), majorDim, style, val, name);
 250 }
 251
 252 wxRadioBox::~wxRadioBox()
 253 {
 254     SendDestroyEvent();
 255
 256     delete m_radioButtons;
 257     if ( m_dummyHwnd )
 258         DestroyWindow((HWND)m_dummyHwnd);
 259     delete[] m_radioWidth;
 260     delete[] m_radioHeight;
 261 }
 262
 263 // NB: if this code is changed, wxGetWindowForHWND() which relies on having the
 264 //     radiobox pointer in GWL_USERDATA for radio buttons must be updated too!
 265 void wxRadioBox::SubclassRadioButton(WXHWND hWndBtn)
 266 {
 267     HWND hwndBtn = (HWND)hWndBtn;
 268
 269     if ( !s_wndprocRadioBtn )
 270         s_wndprocRadioBtn = (WXFARPROC)wxGetWindowProc(hwndBtn);
 271
 272     wxSetWindowProc(hwndBtn, wxRadioBtnWndProc);
 273     wxSetWindowUserData(hwndBtn, this);
 274 }
 275
 276 // ----------------------------------------------------------------------------
 277 // events generation
 278 // ----------------------------------------------------------------------------
 279
 280 bool wxRadioBox::MSWCommand(WXUINT cmd, WXWORD id_)
 281 {
 282     const int id = (signed short)id_;
 283
 284     if ( cmd == BN_CLICKED )
 285     {
 286         if (id == GetId())
 287             return true;
 288
 289         int selectedButton = wxNOT_FOUND;
 290
 291         const unsigned int count = GetCount();
 292         for ( unsigned int i = 0; i < count; i++ )
 293         {
 294             const HWND hwndBtn = (*m_radioButtons)[i];
 295             if ( id == wxGetWindowId(hwndBtn) )
 296             {
 297                 // we can get BN_CLICKED for a button which just became focused
 298                 // but it may not be checked, in which case we shouldn't
 299                 // generate a radiobox selection changed event for it
 300                 if ( ::SendMessage(hwndBtn, BM_GETCHECK, 0, 0) == BST_CHECKED )
 301                     selectedButton = i;
 302
 303                 break;
 304             }
 305         }
 306
 307         if ( selectedButton == wxNOT_FOUND )
 308         {
 309             // just ignore it - due to a hack with WM_NCHITTEST handling in our
 310             // wnd proc, we can receive dummy click messages when we click near
 311             // the radiobox edge (this is ugly but Julian wouldn't let me get
 312             // rid of this...)
 313             return false;
 314         }
 315
 316         if ( selectedButton != m_selectedButton )
 317         {
 318             m_selectedButton = selectedButton;
 319
 320             SendNotificationEvent();
 321         }
 322         //else: don't generate events when the selection doesn't change
 323
 324         return true;
 325     }
 326     else
 327         return false;
 328 }
 329
 330 void wxRadioBox::Command(wxCommandEvent & event)
 331 {
 332     SetSelection (event.GetInt());
 333     SetFocus();
 334     ProcessCommand(event);
 335 }
 336
 337 void wxRadioBox::SendNotificationEvent()
 338 {
 339     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, m_windowId);
 340     event.SetInt( m_selectedButton );
 341     event.SetString(GetString(m_selectedButton));
 342     event.SetEventObject( this );
 343     ProcessCommand(event);
 344 }
 345
 346 // ----------------------------------------------------------------------------
 347 // simple accessors
 348 // ----------------------------------------------------------------------------
 349
 350 unsigned int wxRadioBox::GetCount() const
 351 {
 352     return m_radioButtons ? m_radioButtons->GetCount() : 0u;
 353 }
 354
 355 void wxRadioBox::SetString(unsigned int item, const wxString& label)
 356 {
 357     wxCHECK_RET( IsValid(item), wxT("invalid radiobox index") );
 358
 359     m_radioWidth[item] =
 360     m_radioHeight[item] = wxDefaultCoord;
 361
 362     ::SetWindowText((*m_radioButtons)[item], label.c_str());
 363
 364     InvalidateBestSize();
 365 }
 366
 367 void wxRadioBox::SetSelection(int N)
 368 {
 369     wxCHECK_RET( IsValid(N), wxT("invalid radiobox index") );
 370
 371     // unselect the old button
 372     if ( m_selectedButton != wxNOT_FOUND )
 373         ::SendMessage((*m_radioButtons)[m_selectedButton], BM_SETCHECK, 0, 0L);
 374
 375     // and select the new one
 376     ::SendMessage((*m_radioButtons)[N], BM_SETCHECK, 1, 0L);
 377
 378     m_selectedButton = N;
 379 }
 380
 381 // Find string for position
 382 wxString wxRadioBox::GetString(unsigned int item) const
 383 {
 384     wxCHECK_MSG( IsValid(item), wxEmptyString,
 385                  wxT("invalid radiobox index") );
 386
 387     return wxGetWindowText((*m_radioButtons)[item]);
 388 }
 389
 390 void wxRadioBox::SetFocus()
 391 {
 392     if ( GetCount() > 0 )
 393     {
 394         ::SetFocus((*m_radioButtons)[m_selectedButton == wxNOT_FOUND
 395                                         ? 0
 396                                         : m_selectedButton]);
 397     }
 398 }
 399
 400 // Enable a specific button
 401 bool wxRadioBox::Enable(unsigned int item, bool enable)
 402 {
 403     wxCHECK_MSG( IsValid(item), false,
 404                  wxT("invalid item in wxRadioBox::Enable()") );
 405
 406     BOOL ret = ::EnableWindow((*m_radioButtons)[item], enable);
 407
 408     return (ret == 0) != enable;
 409 }
 410
 411 bool wxRadioBox::IsItemEnabled(unsigned int item) const
 412 {
 413     wxCHECK_MSG( IsValid(item), false,
 414                  wxT("invalid item in wxRadioBox::IsItemEnabled()") );
 415
 416     return ::IsWindowEnabled((*m_radioButtons)[item]) != 0;
 417 }
 418
 419 // Show a specific button
 420 bool wxRadioBox::Show(unsigned int item, bool show)
 421 {
 422     wxCHECK_MSG( IsValid(item), false,
 423                  wxT("invalid item in wxRadioBox::Show()") );
 424
 425     BOOL ret = ::ShowWindow((*m_radioButtons)[item], show ? SW_SHOW : SW_HIDE);
 426
 427     bool changed = (ret != 0) != show;
 428     if ( changed )
 429     {
 430         InvalidateBestSize();
 431     }
 432
 433     return changed;
 434 }
 435
 436 bool wxRadioBox::IsItemShown(unsigned int item) const
 437 {
 438     wxCHECK_MSG( IsValid(item), false,
 439                  wxT("invalid item in wxRadioBox::IsItemShown()") );
 440
 441     // don't use IsWindowVisible() here because it would return false if the
 442     // radiobox itself is hidden while we want to only return false if this
 443     // button specifically is hidden
 444     return (::GetWindowLong((*m_radioButtons)[item],
 445                             GWL_STYLE) & WS_VISIBLE) != 0;
 446 }
 447
 448 #if wxUSE_TOOLTIPS
 449
 450 bool wxRadioBox::HasToolTips() const
 451 {
 452     return wxStaticBox::HasToolTips() || wxRadioBoxBase::HasItemToolTips();
 453 }
 454
 455 void wxRadioBox::DoSetItemToolTip(unsigned int item, wxToolTip *tooltip)
 456 {
 457     // we have already checked for the item to be valid in wxRadioBoxBase
 458     const HWND hwndRbtn = (*m_radioButtons)[item];
 459     if ( tooltip != NULL )
 460         tooltip->Add(hwndRbtn);
 461     else // unset the tooltip
 462         wxToolTip::Remove(hwndRbtn, 0, wxRect(0,0,0,0));
 463         // the second parameter can be zero since it's ignored by Remove()
 464         // as we pass a rect for which wxRect::IsEmpty()==true...
 465 }
 466
 467 #endif // wxUSE_TOOLTIPS
 468
 469 bool wxRadioBox::Reparent(wxWindowBase *newParent)
 470 {
 471     if ( !wxStaticBox::Reparent(newParent) )
 472     {
 473         return false;
 474     }
 475
 476     HWND hwndParent = GetHwndOf(GetParent());
 477     for ( size_t item = 0; item < m_radioButtons->GetCount(); item++ )
 478     {
 479         ::SetParent((*m_radioButtons)[item], hwndParent);
 480     }
 481 #ifdef __WXWINCE__
 482     // put static box under the buttons in the Z-order
 483     SetWindowPos(GetHwnd(), HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 484 #endif
 485     return true;
 486 }
 487
 488 WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(wxRadioBox, wxStaticBox, m_radioButtons)
 489
 490 // ----------------------------------------------------------------------------
 491 // size calculations
 492 // ----------------------------------------------------------------------------
 493
 494 wxSize wxRadioBox::GetMaxButtonSize() const
 495 {
 496     // calculate the max button size
 497     int widthMax = 0,
 498         heightMax = 0;
 499     const unsigned int count = GetCount();
 500     for ( unsigned int i = 0 ; i < count; i++ )
 501     {
 502         int width, height;
 503         if ( m_radioWidth[i] < 0 )
 504         {
 505             GetTextExtent(wxGetWindowText((*m_radioButtons)[i]), &width, &height);
 506
 507             // adjust the size to take into account the radio box itself
 508             // FIXME this is totally bogus!
 509             width += RADIO_SIZE;
 510             height *= 3;
 511             height /= 2;
 512         }
 513         else
 514         {
 515             width = m_radioWidth[i];
 516             height = m_radioHeight[i];
 517         }
 518
 519         if ( widthMax < width )
 520             widthMax = width;
 521         if ( heightMax < height )
 522             heightMax = height;
 523     }
 524
 525     return wxSize(widthMax, heightMax);
 526 }
 527
 528 wxSize wxRadioBox::GetTotalButtonSize(const wxSize& sizeBtn) const
 529 {
 530     // the radiobox should be big enough for its buttons
 531     int cx1, cy1;
 532     wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
 533
 534     int extraHeight = cy1;
 535
 536     int height = GetRowCount() * sizeBtn.y + cy1/2 + extraHeight;
 537     int width  = GetColumnCount() * (sizeBtn.x + cx1) + cx1;
 538
 539     // Add extra space under the label, if it exists.
 540     if (!wxControl::GetLabel().empty())
 541         height += cy1/2;
 542
 543     // and also wide enough for its label
 544     int widthLabel;
 545     GetTextExtent(GetLabelText(), &widthLabel, NULL);
 546     widthLabel += RADIO_SIZE; // FIXME this is bogus too
 547     if ( widthLabel > width )
 548         width = widthLabel;
 549
 550     return wxSize(width, height);
 551 }
 552
 553 wxSize wxRadioBox::DoGetBestSize() const
 554 {
 555     if ( !m_radioButtons )
 556     {
 557         // if we're not fully initialized yet, we can't meaningfully compute
 558         // our best size, we'll do it later
 559         return wxSize(1, 1);
 560     }
 561
 562     wxSize best = GetTotalButtonSize(GetMaxButtonSize());
 563     CacheBestSize(best);
 564     return best;
 565 }
 566
 567 void wxRadioBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 568 {
 569     if ( (width == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_WIDTH)) ||
 570             (height == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_HEIGHT)) )
 571     {
 572         // Attempt to have a look coherent with other platforms: We compute the
 573         // biggest toggle dim, then we align all items according this value.
 574         const wxSize totSize = GetTotalButtonSize(GetMaxButtonSize());
 575
 576         // only change our width/height if asked for
 577         if ( width == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_WIDTH) )
 578             width = totSize.x;
 579
 580         if ( height == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_HEIGHT) )
 581             height = totSize.y;
 582     }
 583
 584     wxStaticBox::DoSetSize(x, y, width, height);
 585 }
 586
 587 void wxRadioBox::DoMoveWindow(int x, int y, int width, int height)
 588 {
 589     wxStaticBox::DoMoveWindow(x, y, width, height);
 590
 591     wxSize maxSize = GetMaxButtonSize();
 592     int maxWidth = maxSize.x,
 593         maxHeight = maxSize.y;
 594
 595     // Now position all the buttons: the current button will be put at
 596     // wxPoint(x_offset, y_offset) and the new row/column will start at
 597     // startX/startY. The size of all buttons will be the same wxSize(maxWidth,
 598     // maxHeight) except for the buttons in the last column which should extend
 599     // to the right border of radiobox and thus can be wider than this.
 600
 601     // Also, remember that wxRA_SPECIFY_COLS means that we arrange buttons in
 602     // left to right order and GetMajorDim() is the number of columns while
 603     // wxRA_SPECIFY_ROWS means that the buttons are arranged top to bottom and
 604     // GetMajorDim() is the number of rows.
 605
 606     int cx1, cy1;
 607     wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
 608
 609     int x_offset = x + cx1;
 610     int y_offset = y + cy1;
 611
 612     // Add extra space under the label, if it exists.
 613     if (!wxControl::GetLabel().empty())
 614         y_offset += cy1/2;
 615
 616     int startX = x_offset;
 617     int startY = y_offset;
 618
 619     const unsigned int count = GetCount();
 620     for (unsigned int i = 0; i < count; i++)
 621     {
 622         // the last button in the row may be wider than the other ones as the
 623         // radiobox may be wider than the sum of the button widths (as it
 624         // happens, for example, when the radiobox label is very long)
 625         bool isLastInTheRow;
 626         if ( m_windowStyle & wxRA_SPECIFY_COLS )
 627         {
 628             // item is the last in its row if it is a multiple of the number of
 629             // columns or if it is just the last item
 630             unsigned int n = i + 1;
 631             isLastInTheRow = ((n % GetMajorDim()) == 0) || (n == count);
 632         }
 633         else // wxRA_SPECIFY_ROWS
 634         {
 635             // item is the last in the row if it is in the last columns
 636             isLastInTheRow = i >= (count/GetMajorDim())*GetMajorDim();
 637         }
 638
 639         // is this the start of new row/column?
 640         if ( i && (i % GetMajorDim() == 0) )
 641         {
 642             if ( m_windowStyle & wxRA_SPECIFY_ROWS )
 643             {
 644                 // start of new column
 645                 y_offset = startY;
 646                 x_offset += maxWidth + cx1;
 647             }
 648             else // start of new row
 649             {
 650                 x_offset = startX;
 651                 y_offset += maxHeight;
 652                 if (m_radioWidth[0]>0)
 653                     y_offset += cy1/2;
 654             }
 655         }
 656
 657         int widthBtn;
 658         if ( isLastInTheRow )
 659         {
 660             // make the button go to the end of radio box
 661             widthBtn = startX + width - x_offset - 2*cx1;
 662             if ( widthBtn < maxWidth )
 663                 widthBtn = maxWidth;
 664         }
 665         else
 666         {
 667             // normal button, always of the same size
 668             widthBtn = maxWidth;
 669         }
 670
 671         // make all buttons of the same, maximal size - like this they cover
 672         // the radiobox entirely and the radiobox tooltips are always shown
 673         // (otherwise they are not when the mouse pointer is in the radiobox
 674         // part not belonging to any radiobutton)
 675         DoMoveSibling((*m_radioButtons)[i], x_offset, y_offset, widthBtn, maxHeight);
 676
 677         // where do we put the next button?
 678         if ( m_windowStyle & wxRA_SPECIFY_ROWS )
 679         {
 680             // below this one
 681             y_offset += maxHeight;
 682             if (m_radioWidth[0]>0)
 683                 y_offset += cy1/2;
 684         }
 685         else
 686         {
 687             // to the right of this one
 688             x_offset += widthBtn + cx1;
 689         }
 690     }
 691 }
 692
 693 int wxRadioBox::GetItemFromPoint(const wxPoint& pt) const
 694 {
 695     const unsigned int count = GetCount();
 696     for ( unsigned int i = 0; i < count; i++ )
 697     {
 698         RECT rect = wxGetWindowRect((*m_radioButtons)[i]);
 699
 700         if ( rect.left <= pt.x && pt.x < rect.right &&
 701                 rect.top  <= pt.y && pt.y < rect.bottom )
 702         {
 703             return i;
 704         }
 705     }
 706
 707     return wxNOT_FOUND;
 708 }
 709
 710 // ----------------------------------------------------------------------------
 711 // radio box drawing
 712 // ----------------------------------------------------------------------------
 713
 714 #ifndef __WXWINCE__
 715
 716 WXHRGN wxRadioBox::MSWGetRegionWithoutChildren()
 717 {
 718     RECT rc;
 719     ::GetWindowRect(GetHwnd(), &rc);
 720     HRGN hrgn = ::CreateRectRgn(rc.left, rc.top, rc.right + 1, rc.bottom + 1);
 721
 722     const unsigned int count = GetCount();
 723     for ( unsigned int i = 0; i < count; ++i )
 724     {
 725         // don't clip out hidden children
 726         if ( !IsItemShown(i) )
 727             continue;
 728
 729         ::GetWindowRect((*m_radioButtons)[i], &rc);
 730         AutoHRGN hrgnchild(::CreateRectRgnIndirect(&rc));
 731         ::CombineRgn(hrgn, hrgn, hrgnchild, RGN_DIFF);
 732     }
 733
 734     return (WXHRGN)hrgn;
 735 }
 736
 737 #endif // __WXWINCE__
 738
 739 // ---------------------------------------------------------------------------
 740 // window proc for radio buttons
 741 // ---------------------------------------------------------------------------
 742
 743 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hwnd,
 744                                            UINT message,
 745                                            WPARAM wParam,
 746                                            LPARAM lParam)
 747 {
 748     switch ( message )
 749     {
 750         case WM_GETDLGCODE:
 751             // we must tell IsDialogMessage()/our kbd processing code that we
 752             // want to process arrows ourselves because neither of them is
 753             // smart enough to handle arrows properly for us
 754             {
 755                 long lDlgCode = ::CallWindowProc(CASTWNDPROC s_wndprocRadioBtn, hwnd,
 756                                                  message, wParam, lParam);
 757
 758                 return lDlgCode | DLGC_WANTARROWS;
 759             }
 760
 761         case WM_KEYDOWN:
 762             {
 763                 wxRadioBox *radiobox = (wxRadioBox *)wxGetWindowUserData(hwnd);
 764
 765                 wxCHECK_MSG( radiobox, 0, wxT("radio button without radio box?") );
 766
 767                 bool processed = true;
 768
 769                 wxDirection dir;
 770                 switch ( wParam )
 771                 {
 772                     case VK_UP:
 773                         dir = wxUP;
 774                         break;
 775
 776                     case VK_LEFT:
 777                         dir = wxLEFT;
 778                         break;
 779
 780                     case VK_DOWN:
 781                         dir = wxDOWN;
 782                         break;
 783
 784                     case VK_RIGHT:
 785                         dir = wxRIGHT;
 786                         break;
 787
 788                     default:
 789                         processed = false;
 790
 791                         // just to suppress the compiler warning
 792                         dir = wxALL;
 793                 }
 794
 795                 if ( processed )
 796                 {
 797                     int selOld = radiobox->GetSelection();
 798                     int selNew = radiobox->GetNextItem
 799                                  (
 800                                   selOld,
 801                                   dir,
 802                                   radiobox->GetWindowStyle()
 803                                  );
 804
 805                     if ( selNew != selOld )
 806                     {
 807                         radiobox->SetSelection(selNew);
 808                         radiobox->SetFocus();
 809
 810                         // emulate the button click
 811                         radiobox->SendNotificationEvent();
 812
 813                         return 0;
 814                     }
 815                 }
 816             }
 817             break;
 818
 819         case WM_SETFOCUS:
 820         case WM_KILLFOCUS:
 821             {
 822                 wxRadioBox *radiobox = (wxRadioBox *)wxGetWindowUserData(hwnd);
 823
 824                 wxCHECK_MSG( radiobox, 0, wxT("radio button without radio box?") );
 825
 826                 // if we don't do this, no focus events are generated for the
 827                 // radiobox and, besides, we need to notify the parent about
 828                 // the focus change, otherwise the focus handling logic in
 829                 // wxControlContainer doesn't work
 830                 if ( message == WM_SETFOCUS )
 831                     radiobox->HandleSetFocus((WXHWND)wParam);
 832                 else
 833                     radiobox->HandleKillFocus((WXHWND)wParam);
 834             }
 835             break;
 836
 837 #ifndef __WXWINCE__
 838         case WM_HELP:
 839             {
 840                 wxRadioBox *radiobox = (wxRadioBox *)wxGetWindowUserData(hwnd);
 841
 842                 wxCHECK_MSG( radiobox, 0, wxT("radio button without radio box?") );
 843
 844                 bool processed = false;
 845
 846                 wxEvtHandler * const handler = radiobox->GetEventHandler();
 847
 848                 HELPINFO* info = (HELPINFO*) lParam;
 849                 if ( info->iContextType == HELPINFO_WINDOW )
 850                 {
 851                     for ( wxWindow* subjectOfHelp = radiobox;
 852                           subjectOfHelp;
 853                           subjectOfHelp = subjectOfHelp->GetParent() )
 854                     {
 855                         wxHelpEvent helpEvent(wxEVT_HELP,
 856                                               subjectOfHelp->GetId(),
 857                                               wxPoint(info->MousePos.x,
 858                                                       info->MousePos.y));
 859                         helpEvent.SetEventObject(radiobox);
 860                         if ( handler->ProcessEvent(helpEvent) )
 861                         {
 862                             processed = true;
 863                             break;
 864                         }
 865                     }
 866                 }
 867                 else if (info->iContextType == HELPINFO_MENUITEM)
 868                 {
 869                     wxHelpEvent helpEvent(wxEVT_HELP, info->iCtrlId);
 870                     helpEvent.SetEventObject(radiobox);
 871                     processed = handler->ProcessEvent(helpEvent);
 872                 }
 873
 874                 if ( processed )
 875                     return 0;
 876             }
 877             break;
 878 #endif // !__WXWINCE__
 879     }
 880
 881     return ::CallWindowProc(CASTWNDPROC s_wndprocRadioBtn, hwnd, message, wParam, lParam);
 882 }
 883
 884 #endif // wxUSE_RADIOBOX