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/hashmap.h"
  33     #include "wx/bitmap.h"
  34     #include "wx/brush.h"
  35     #include "wx/settings.h"
  36     #include "wx/log.h"
  37 #endif
  38
  39 #include "wx/msw/subwin.h"
  40
  41 #if wxUSE_TOOLTIPS
  42     #include "wx/tooltip.h"
  43 #endif // wxUSE_TOOLTIPS
  44
  45 // TODO: wxCONSTRUCTOR
  46 #if 0 // wxUSE_EXTENDED_RTTI
  47 WX_DEFINE_FLAGS( wxRadioBoxStyle )
  48
  49 wxBEGIN_FLAGS( wxRadioBoxStyle )
  50     // new style border flags, we put them first to
  51     // use them for streaming out
  52     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  53     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  54     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  55     wxFLAGS_MEMBER(wxBORDER_RAISED)
  56     wxFLAGS_MEMBER(wxBORDER_STATIC)
  57     wxFLAGS_MEMBER(wxBORDER_NONE)
  58
  59     // old style border flags
  60     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  61     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  62     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  63     wxFLAGS_MEMBER(wxRAISED_BORDER)
  64     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  65     wxFLAGS_MEMBER(wxBORDER)
  66
  67     // standard window styles
  68     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  69     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  70     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  71     wxFLAGS_MEMBER(wxWANTS_CHARS)
  72     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  73     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  74     wxFLAGS_MEMBER(wxVSCROLL)
  75     wxFLAGS_MEMBER(wxHSCROLL)
  76
  77     wxFLAGS_MEMBER(wxRA_SPECIFY_COLS)
  78     wxFLAGS_MEMBER(wxRA_SPECIFY_ROWS)
  79 wxEND_FLAGS( wxRadioBoxStyle )
  80
  81 IMPLEMENT_DYNAMIC_CLASS_XTI(wxRadioBox, wxControl,"wx/radiobox.h")
  82
  83 wxBEGIN_PROPERTIES_TABLE(wxRadioBox)
  84     wxEVENT_PROPERTY( Select , wxEVT_COMMAND_RADIOBOX_SELECTED , wxCommandEvent )
  85     wxPROPERTY_FLAGS( WindowStyle , wxRadioBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  86 wxEND_PROPERTIES_TABLE()
  87
  88 #else
  89 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  90 #endif
  91
  92 /*
  93     selection
  94     content
  95         label
  96         dimension
  97         item
  98 */
  99
 100 // ---------------------------------------------------------------------------
 101 // private functions
 102 // ---------------------------------------------------------------------------
 103
 104 // wnd proc for radio buttons
 105 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hWnd,
 106                                            UINT message,
 107                                            WPARAM wParam,
 108                                            LPARAM lParam);
 109
 110 // ---------------------------------------------------------------------------
 111 // global vars
 112 // ---------------------------------------------------------------------------
 113
 114 namespace
 115 {
 116
 117 // the pointer to standard radio button wnd proc
 118 WXFARPROC s_wndprocRadioBtn = (WXFARPROC)NULL;
 119
 120 // Hash allowing to find wxRadioBox containing the given radio button by its
 121 // HWND. This is used by (subclassed) radio button window proc to find the
 122 // radio box it belongs to.
 123 WX_DECLARE_HASH_MAP(HWND, wxRadioBox *,
 124                     wxPointerHash, wxPointerEqual,
 125                     RadioBoxFromButton);
 126
 127 RadioBoxFromButton gs_boxFromButton;
 128
 129 } // anonymous namespace
 130
 131 // ===========================================================================
 132 // implementation
 133 // ===========================================================================
 134
 135 /* static */
 136 wxRadioBox* wxRadioBox::GetFromRadioButtonHWND(WXHWND hwnd)
 137 {
 138     const RadioBoxFromButton::const_iterator it = gs_boxFromButton.find(hwnd);
 139     return it == gs_boxFromButton.end() ? NULL : it->second;
 140 }
 141
 142 // ---------------------------------------------------------------------------
 143 // wxRadioBox creation
 144 // ---------------------------------------------------------------------------
 145
 146 // Radio box item
 147 void wxRadioBox::Init()
 148 {
 149     m_selectedButton = wxNOT_FOUND;
 150     m_radioButtons = NULL;
 151     m_dummyHwnd = NULL;
 152     m_radioWidth = NULL;
 153     m_radioHeight = NULL;
 154 }
 155
 156 bool wxRadioBox::Create(wxWindow *parent,
 157                         wxWindowID id,
 158                         const wxString& title,
 159                         const wxPoint& pos,
 160                         const wxSize& size,
 161                         int n,
 162                         const wxString choices[],
 163                         int majorDim,
 164                         long style,
 165                         const wxValidator& val,
 166                         const wxString& name)
 167 {
 168     // common initialization
 169     if ( !wxStaticBox::Create(parent, id, title, pos, size, style, name) )
 170         return false;
 171
 172     // the code elsewhere in this file supposes that either wxRA_SPECIFY_COLS
 173     // or wxRA_SPECIFY_ROWS is set, ensure that this is indeed the case
 174     if ( !(style & (wxRA_SPECIFY_ROWS | wxRA_SPECIFY_COLS)) )
 175         style |= wxRA_SPECIFY_COLS;
 176
 177 #if wxUSE_VALIDATORS
 178     SetValidator(val);
 179 #else
 180     wxUnusedVar(val);
 181 #endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS
 182
 183     // We need an extra one to keep track of the 'dummy' item we
 184     // create to end the radio group, so it will be destroyed and
 185     // it's id will be released.  But we want it separate from the
 186     // other buttons since the wxSubwindows will operate on it as
 187     // well and we just want to ignore it until destroying it.
 188     // For instance, we don't want the bounding box of the radio
 189     // buttons to include the dummy button
 190     m_radioButtons = new wxSubwindows(n);
 191
 192     m_radioWidth = new int[n];
 193     m_radioHeight = new int[n];
 194
 195     for ( int i = 0; i < n; i++ )
 196     {
 197         m_radioWidth[i] =
 198         m_radioHeight[i] = wxDefaultCoord;
 199         long styleBtn = BS_AUTORADIOBUTTON | WS_TABSTOP | WS_CHILD | WS_VISIBLE;
 200         if ( i == 0 )
 201             styleBtn |= WS_GROUP;
 202
 203         wxWindowIDRef subid = NewControlId();
 204
 205         HWND hwndBtn = ::CreateWindow(wxT("BUTTON"),
 206                                       choices[i].wx_str(),
 207                                       styleBtn,
 208                                       0, 0, 0, 0,   // will be set in SetSize()
 209                                       GetHwndOf(parent),
 210                                       (HMENU)wxUIntToPtr(subid.GetValue()),
 211                                       wxGetInstance(),
 212                                       NULL);
 213
 214         if ( !hwndBtn )
 215         {
 216             wxLogLastError(wxT("CreateWindow(radio btn)"));
 217
 218             return false;
 219         }
 220
 221         // Keep track of the subwindow
 222         m_radioButtons->Set(i, hwndBtn, subid);
 223
 224         SubclassRadioButton((WXHWND)hwndBtn);
 225
 226         // Also, make it a subcontrol of this control
 227         m_subControls.Add(subid);
 228     }
 229
 230     // Create a dummy radio control to end the group.
 231     m_dummyId = NewControlId();
 232
 233     m_dummyHwnd = (WXHWND)::CreateWindow(wxT("BUTTON"),
 234                          wxEmptyString,
 235                          WS_GROUP | BS_AUTORADIOBUTTON | WS_CHILD,
 236                          0, 0, 0, 0, GetHwndOf(parent),
 237                          (HMENU)wxUIntToPtr(m_dummyId.GetValue()),
 238                          wxGetInstance(), NULL);
 239
 240
 241     m_radioButtons->SetFont(GetFont());
 242
 243 #ifdef __WXWINCE__
 244     // Set the z-order correctly
 245     SetWindowPos(GetHwnd(), HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 246 #endif
 247
 248     SetMajorDim(majorDim == 0 ? n : majorDim, style);
 249     SetSelection(0);
 250     SetSize(pos.x, pos.y, size.x, size.y);
 251
 252     // Now that we have items determine what is the best size and set it.
 253     SetInitialSize(size);
 254
 255     return true;
 256 }
 257
 258 bool wxRadioBox::Create(wxWindow *parent,
 259                         wxWindowID id,
 260                         const wxString& title,
 261                         const wxPoint& pos,
 262                         const wxSize& size,
 263                         const wxArrayString& choices,
 264                         int majorDim,
 265                         long style,
 266                         const wxValidator& val,
 267                         const wxString& name)
 268 {
 269     wxCArrayString chs(choices);
 270     return Create(parent, id, title, pos, size, chs.GetCount(),
 271                   chs.GetStrings(), majorDim, style, val, name);
 272 }
 273
 274 wxRadioBox::~wxRadioBox()
 275 {
 276     SendDestroyEvent();
 277
 278     // Unsubclass all the radio buttons and remove their soon-to-be-invalid
 279     // HWNDs from the global map. Notice that we need to unsubclass because
 280     // otherwise we'd need the entries in gs_boxFromButton for the buttons
 281     // being deleted to handle the messages generated during their destruction.
 282     for ( size_t item = 0; item < m_radioButtons->GetCount(); item++ )
 283     {
 284         HWND hwnd = m_radioButtons->Get(item);
 285
 286         wxSetWindowProc(hwnd, reinterpret_cast<WNDPROC>(s_wndprocRadioBtn));
 287         gs_boxFromButton.erase(hwnd);
 288     }
 289
 290     delete m_radioButtons;
 291
 292     if ( m_dummyHwnd )
 293         DestroyWindow((HWND)m_dummyHwnd);
 294
 295     delete[] m_radioWidth;
 296     delete[] m_radioHeight;
 297 }
 298
 299 // NB: if this code is changed, wxGetWindowForHWND() which relies on having the
 300 //     radiobox pointer in GWL_USERDATA for radio buttons must be updated too!
 301 void wxRadioBox::SubclassRadioButton(WXHWND hWndBtn)
 302 {
 303     HWND hwndBtn = (HWND)hWndBtn;
 304
 305     if ( !s_wndprocRadioBtn )
 306         s_wndprocRadioBtn = (WXFARPROC)wxGetWindowProc(hwndBtn);
 307
 308     wxSetWindowProc(hwndBtn, wxRadioBtnWndProc);
 309
 310     gs_boxFromButton[hwndBtn] = this;
 311 }
 312
 313 // ----------------------------------------------------------------------------
 314 // events generation
 315 // ----------------------------------------------------------------------------
 316
 317 bool wxRadioBox::MSWCommand(WXUINT cmd, WXWORD id_)
 318 {
 319     const int id = (signed short)id_;
 320
 321     if ( cmd == BN_CLICKED )
 322     {
 323         if (id == GetId())
 324             return true;
 325
 326         int selectedButton = wxNOT_FOUND;
 327
 328         const unsigned int count = GetCount();
 329         for ( unsigned int i = 0; i < count; i++ )
 330         {
 331             const HWND hwndBtn = (*m_radioButtons)[i];
 332             if ( id == wxGetWindowId(hwndBtn) )
 333             {
 334                 // we can get BN_CLICKED for a button which just became focused
 335                 // but it may not be checked, in which case we shouldn't
 336                 // generate a radiobox selection changed event for it
 337                 if ( ::SendMessage(hwndBtn, BM_GETCHECK, 0, 0) == BST_CHECKED )
 338                     selectedButton = i;
 339
 340                 break;
 341             }
 342         }
 343
 344         if ( selectedButton == wxNOT_FOUND )
 345         {
 346             // just ignore it - due to a hack with WM_NCHITTEST handling in our
 347             // wnd proc, we can receive dummy click messages when we click near
 348             // the radiobox edge (this is ugly but Julian wouldn't let me get
 349             // rid of this...)
 350             return false;
 351         }
 352
 353         if ( selectedButton != m_selectedButton )
 354         {
 355             m_selectedButton = selectedButton;
 356
 357             SendNotificationEvent();
 358         }
 359         //else: don't generate events when the selection doesn't change
 360
 361         return true;
 362     }
 363     else
 364         return false;
 365 }
 366
 367 void wxRadioBox::Command(wxCommandEvent & event)
 368 {
 369     SetSelection (event.GetInt());
 370     SetFocus();
 371     ProcessCommand(event);
 372 }
 373
 374 void wxRadioBox::SendNotificationEvent()
 375 {
 376     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, m_windowId);
 377     event.SetInt( m_selectedButton );
 378     event.SetString(GetString(m_selectedButton));
 379     event.SetEventObject( this );
 380     ProcessCommand(event);
 381 }
 382
 383 // ----------------------------------------------------------------------------
 384 // simple accessors
 385 // ----------------------------------------------------------------------------
 386
 387 unsigned int wxRadioBox::GetCount() const
 388 {
 389     return m_radioButtons ? m_radioButtons->GetCount() : 0u;
 390 }
 391
 392 void wxRadioBox::SetString(unsigned int item, const wxString& label)
 393 {
 394     wxCHECK_RET( IsValid(item), wxT("invalid radiobox index") );
 395
 396     m_radioWidth[item] =
 397     m_radioHeight[item] = wxDefaultCoord;
 398
 399     ::SetWindowText((*m_radioButtons)[item], label.c_str());
 400
 401     InvalidateBestSize();
 402 }
 403
 404 void wxRadioBox::SetSelection(int N)
 405 {
 406     wxCHECK_RET( IsValid(N), wxT("invalid radiobox index") );
 407
 408     // unselect the old button
 409     if ( m_selectedButton != wxNOT_FOUND )
 410         ::SendMessage((*m_radioButtons)[m_selectedButton], BM_SETCHECK, 0, 0L);
 411
 412     // and select the new one
 413     ::SendMessage((*m_radioButtons)[N], BM_SETCHECK, 1, 0L);
 414
 415     m_selectedButton = N;
 416 }
 417
 418 // Find string for position
 419 wxString wxRadioBox::GetString(unsigned int item) const
 420 {
 421     wxCHECK_MSG( IsValid(item), wxEmptyString,
 422                  wxT("invalid radiobox index") );
 423
 424     return wxGetWindowText((*m_radioButtons)[item]);
 425 }
 426
 427 void wxRadioBox::SetFocus()
 428 {
 429     if ( GetCount() > 0 )
 430     {
 431         ::SetFocus((*m_radioButtons)[m_selectedButton == wxNOT_FOUND
 432                                         ? 0
 433                                         : m_selectedButton]);
 434     }
 435 }
 436
 437 // Enable a specific button
 438 bool wxRadioBox::Enable(unsigned int item, bool enable)
 439 {
 440     wxCHECK_MSG( IsValid(item), false,
 441                  wxT("invalid item in wxRadioBox::Enable()") );
 442
 443     BOOL ret = MSWEnableHWND((*m_radioButtons)[item], enable);
 444
 445     return (ret == 0) != enable;
 446 }
 447
 448 bool wxRadioBox::IsItemEnabled(unsigned int item) const
 449 {
 450     wxCHECK_MSG( IsValid(item), false,
 451                  wxT("invalid item in wxRadioBox::IsItemEnabled()") );
 452
 453     return ::IsWindowEnabled((*m_radioButtons)[item]) != 0;
 454 }
 455
 456 // Show a specific button
 457 bool wxRadioBox::Show(unsigned int item, bool show)
 458 {
 459     wxCHECK_MSG( IsValid(item), false,
 460                  wxT("invalid item in wxRadioBox::Show()") );
 461
 462     BOOL ret = ::ShowWindow((*m_radioButtons)[item], show ? SW_SHOW : SW_HIDE);
 463
 464     bool changed = (ret != 0) != show;
 465     if ( changed )
 466     {
 467         InvalidateBestSize();
 468     }
 469
 470     return changed;
 471 }
 472
 473 bool wxRadioBox::IsItemShown(unsigned int item) const
 474 {
 475     wxCHECK_MSG( IsValid(item), false,
 476                  wxT("invalid item in wxRadioBox::IsItemShown()") );
 477
 478     // don't use IsWindowVisible() here because it would return false if the
 479     // radiobox itself is hidden while we want to only return false if this
 480     // button specifically is hidden
 481     return (::GetWindowLong((*m_radioButtons)[item],
 482                             GWL_STYLE) & WS_VISIBLE) != 0;
 483 }
 484
 485 #if wxUSE_TOOLTIPS
 486
 487 bool wxRadioBox::HasToolTips() const
 488 {
 489     return wxStaticBox::HasToolTips() || wxRadioBoxBase::HasItemToolTips();
 490 }
 491
 492 void wxRadioBox::DoSetItemToolTip(unsigned int item, wxToolTip *tooltip)
 493 {
 494     // we have already checked for the item to be valid in wxRadioBoxBase
 495     const HWND hwndRbtn = (*m_radioButtons)[item];
 496     if ( tooltip != NULL )
 497         tooltip->Add(hwndRbtn);
 498     else // unset the tooltip
 499         wxToolTip::Remove(hwndRbtn, 0, wxRect(0,0,0,0));
 500         // the second parameter can be zero since it's ignored by Remove()
 501         // as we pass a rect for which wxRect::IsEmpty()==true...
 502 }
 503
 504 #endif // wxUSE_TOOLTIPS
 505
 506 bool wxRadioBox::Reparent(wxWindowBase *newParent)
 507 {
 508     if ( !wxStaticBox::Reparent(newParent) )
 509     {
 510         return false;
 511     }
 512
 513     HWND hwndParent = GetHwndOf(GetParent());
 514     for ( size_t item = 0; item < m_radioButtons->GetCount(); item++ )
 515     {
 516         ::SetParent((*m_radioButtons)[item], hwndParent);
 517     }
 518 #ifdef __WXWINCE__
 519     // put static box under the buttons in the Z-order
 520     SetWindowPos(GetHwnd(), HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 521 #endif
 522     return true;
 523 }
 524
 525 WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(wxRadioBox, wxStaticBox, m_radioButtons)
 526
 527 // ----------------------------------------------------------------------------
 528 // size calculations
 529 // ----------------------------------------------------------------------------
 530
 531 wxSize wxRadioBox::GetMaxButtonSize() const
 532 {
 533     // calculate the max button size
 534     int widthMax = 0,
 535         heightMax = 0;
 536     const unsigned int count = GetCount();
 537     for ( unsigned int i = 0 ; i < count; i++ )
 538     {
 539         int width, height;
 540         if ( m_radioWidth[i] < 0 )
 541         {
 542             GetTextExtent(wxGetWindowText((*m_radioButtons)[i]), &width, &height);
 543
 544             // adjust the size to take into account the radio box itself
 545             // FIXME this is totally bogus!
 546             width += RADIO_SIZE;
 547             height *= 3;
 548             height /= 2;
 549         }
 550         else
 551         {
 552             width = m_radioWidth[i];
 553             height = m_radioHeight[i];
 554         }
 555
 556         if ( widthMax < width )
 557             widthMax = width;
 558         if ( heightMax < height )
 559             heightMax = height;
 560     }
 561
 562     return wxSize(widthMax, heightMax);
 563 }
 564
 565 wxSize wxRadioBox::GetTotalButtonSize(const wxSize& sizeBtn) const
 566 {
 567     // the radiobox should be big enough for its buttons
 568     int cx1, cy1;
 569     wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
 570
 571     int extraHeight = cy1;
 572
 573     int height = GetRowCount() * sizeBtn.y + cy1/2 + extraHeight;
 574     int width  = GetColumnCount() * (sizeBtn.x + cx1) + cx1;
 575
 576     // Add extra space under the label, if it exists.
 577     if (!wxControl::GetLabel().empty())
 578         height += cy1/2;
 579
 580     // and also wide enough for its label
 581     int widthLabel;
 582     GetTextExtent(GetLabelText(), &widthLabel, NULL);
 583     widthLabel += RADIO_SIZE; // FIXME this is bogus too
 584     if ( widthLabel > width )
 585         width = widthLabel;
 586
 587     return wxSize(width, height);
 588 }
 589
 590 wxSize wxRadioBox::DoGetBestSize() const
 591 {
 592     if ( !m_radioButtons )
 593     {
 594         // if we're not fully initialized yet, we can't meaningfully compute
 595         // our best size, we'll do it later
 596         return wxSize(1, 1);
 597     }
 598
 599     wxSize best = GetTotalButtonSize(GetMaxButtonSize());
 600     CacheBestSize(best);
 601     return best;
 602 }
 603
 604 void wxRadioBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 605 {
 606     if ( (width == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_WIDTH)) ||
 607             (height == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_HEIGHT)) )
 608     {
 609         // Attempt to have a look coherent with other platforms: We compute the
 610         // biggest toggle dim, then we align all items according this value.
 611         const wxSize totSize = GetTotalButtonSize(GetMaxButtonSize());
 612
 613         // only change our width/height if asked for
 614         if ( width == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_WIDTH) )
 615             width = totSize.x;
 616
 617         if ( height == wxDefaultCoord && (sizeFlags & wxSIZE_AUTO_HEIGHT) )
 618             height = totSize.y;
 619     }
 620
 621     wxStaticBox::DoSetSize(x, y, width, height);
 622 }
 623
 624 void wxRadioBox::DoMoveWindow(int x, int y, int width, int height)
 625 {
 626     wxStaticBox::DoMoveWindow(x, y, width, height);
 627
 628     wxSize maxSize = GetMaxButtonSize();
 629     int maxWidth = maxSize.x,
 630         maxHeight = maxSize.y;
 631
 632     // Now position all the buttons: the current button will be put at
 633     // wxPoint(x_offset, y_offset) and the new row/column will start at
 634     // startX/startY. The size of all buttons will be the same wxSize(maxWidth,
 635     // maxHeight) except for the buttons in the last column which should extend
 636     // to the right border of radiobox and thus can be wider than this.
 637
 638     // Also, remember that wxRA_SPECIFY_COLS means that we arrange buttons in
 639     // left to right order and GetMajorDim() is the number of columns while
 640     // wxRA_SPECIFY_ROWS means that the buttons are arranged top to bottom and
 641     // GetMajorDim() is the number of rows.
 642
 643     int cx1, cy1;
 644     wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
 645
 646     int x_offset = x + cx1;
 647     int y_offset = y + cy1;
 648
 649     // Add extra space under the label, if it exists.
 650     if (!wxControl::GetLabel().empty())
 651         y_offset += cy1/2;
 652
 653     int startX = x_offset;
 654     int startY = y_offset;
 655
 656     const unsigned int count = GetCount();
 657     for (unsigned int i = 0; i < count; i++)
 658     {
 659         // the last button in the row may be wider than the other ones as the
 660         // radiobox may be wider than the sum of the button widths (as it
 661         // happens, for example, when the radiobox label is very long)
 662         bool isLastInTheRow;
 663         if ( m_windowStyle & wxRA_SPECIFY_COLS )
 664         {
 665             // item is the last in its row if it is a multiple of the number of
 666             // columns or if it is just the last item
 667             unsigned int n = i + 1;
 668             isLastInTheRow = ((n % GetMajorDim()) == 0) || (n == count);
 669         }
 670         else // wxRA_SPECIFY_ROWS
 671         {
 672             // item is the last in the row if it is in the last columns
 673             isLastInTheRow = i >= (count/GetMajorDim())*GetMajorDim();
 674         }
 675
 676         // is this the start of new row/column?
 677         if ( i && (i % GetMajorDim() == 0) )
 678         {
 679             if ( m_windowStyle & wxRA_SPECIFY_ROWS )
 680             {
 681                 // start of new column
 682                 y_offset = startY;
 683                 x_offset += maxWidth + cx1;
 684             }
 685             else // start of new row
 686             {
 687                 x_offset = startX;
 688                 y_offset += maxHeight;
 689                 if (m_radioWidth[0]>0)
 690                     y_offset += cy1/2;
 691             }
 692         }
 693
 694         int widthBtn;
 695         if ( isLastInTheRow )
 696         {
 697             // make the button go to the end of radio box
 698             widthBtn = startX + width - x_offset - 2*cx1;
 699             if ( widthBtn < maxWidth )
 700                 widthBtn = maxWidth;
 701         }
 702         else
 703         {
 704             // normal button, always of the same size
 705             widthBtn = maxWidth;
 706         }
 707
 708         // make all buttons of the same, maximal size - like this they cover
 709         // the radiobox entirely and the radiobox tooltips are always shown
 710         // (otherwise they are not when the mouse pointer is in the radiobox
 711         // part not belonging to any radiobutton)
 712         DoMoveSibling((*m_radioButtons)[i], x_offset, y_offset, widthBtn, maxHeight);
 713
 714         // where do we put the next button?
 715         if ( m_windowStyle & wxRA_SPECIFY_ROWS )
 716         {
 717             // below this one
 718             y_offset += maxHeight;
 719             if (m_radioWidth[0]>0)
 720                 y_offset += cy1/2;
 721         }
 722         else
 723         {
 724             // to the right of this one
 725             x_offset += widthBtn + cx1;
 726         }
 727     }
 728 }
 729
 730 int wxRadioBox::GetItemFromPoint(const wxPoint& pt) const
 731 {
 732     const unsigned int count = GetCount();
 733     for ( unsigned int i = 0; i < count; i++ )
 734     {
 735         RECT rect = wxGetWindowRect((*m_radioButtons)[i]);
 736
 737         if ( rect.left <= pt.x && pt.x < rect.right &&
 738                 rect.top  <= pt.y && pt.y < rect.bottom )
 739         {
 740             return i;
 741         }
 742     }
 743
 744     return wxNOT_FOUND;
 745 }
 746
 747 // ----------------------------------------------------------------------------
 748 // radio box drawing
 749 // ----------------------------------------------------------------------------
 750
 751 #ifndef __WXWINCE__
 752
 753 WXHRGN wxRadioBox::MSWGetRegionWithoutChildren()
 754 {
 755     RECT rc;
 756     ::GetWindowRect(GetHwnd(), &rc);
 757     HRGN hrgn = ::CreateRectRgn(rc.left, rc.top, rc.right + 1, rc.bottom + 1);
 758
 759     const unsigned int count = GetCount();
 760     for ( unsigned int i = 0; i < count; ++i )
 761     {
 762         // don't clip out hidden children
 763         if ( !IsItemShown(i) )
 764             continue;
 765
 766         ::GetWindowRect((*m_radioButtons)[i], &rc);
 767         AutoHRGN hrgnchild(::CreateRectRgnIndirect(&rc));
 768         ::CombineRgn(hrgn, hrgn, hrgnchild, RGN_DIFF);
 769     }
 770
 771     return (WXHRGN)hrgn;
 772 }
 773
 774 #endif // __WXWINCE__
 775
 776 // ---------------------------------------------------------------------------
 777 // window proc for radio buttons
 778 // ---------------------------------------------------------------------------
 779
 780 LRESULT APIENTRY _EXPORT wxRadioBtnWndProc(HWND hwnd,
 781                                            UINT message,
 782                                            WPARAM wParam,
 783                                            LPARAM lParam)
 784 {
 785
 786     wxRadioBox * const radiobox = wxRadioBox::GetFromRadioButtonHWND(hwnd);
 787     wxCHECK_MSG( radiobox, 0, wxT("Should have the associated radio box") );
 788
 789     switch ( message )
 790     {
 791         case WM_GETDLGCODE:
 792             // we must tell IsDialogMessage()/our kbd processing code that we
 793             // want to process arrows ourselves because neither of them is
 794             // smart enough to handle arrows properly for us
 795             {
 796                 long lDlgCode = ::CallWindowProc(CASTWNDPROC s_wndprocRadioBtn, hwnd,
 797                                                  message, wParam, lParam);
 798
 799                 return lDlgCode | DLGC_WANTARROWS;
 800             }
 801
 802         case WM_KEYDOWN:
 803             {
 804                 bool processed = true;
 805
 806                 wxDirection dir;
 807                 switch ( wParam )
 808                 {
 809                     case VK_UP:
 810                         dir = wxUP;
 811                         break;
 812
 813                     case VK_LEFT:
 814                         dir = wxLEFT;
 815                         break;
 816
 817                     case VK_DOWN:
 818                         dir = wxDOWN;
 819                         break;
 820
 821                     case VK_RIGHT:
 822                         dir = wxRIGHT;
 823                         break;
 824
 825                     default:
 826                         processed = false;
 827
 828                         // just to suppress the compiler warning
 829                         dir = wxALL;
 830                 }
 831
 832                 if ( processed )
 833                 {
 834                     int selOld = radiobox->GetSelection();
 835                     int selNew = radiobox->GetNextItem
 836                                  (
 837                                   selOld,
 838                                   dir,
 839                                   radiobox->GetWindowStyle()
 840                                  );
 841
 842                     if ( selNew != selOld )
 843                     {
 844                         radiobox->SetSelection(selNew);
 845                         radiobox->SetFocus();
 846
 847                         // emulate the button click
 848                         radiobox->SendNotificationEvent();
 849
 850                         return 0;
 851                     }
 852                 }
 853             }
 854             break;
 855
 856         case WM_SETFOCUS:
 857         case WM_KILLFOCUS:
 858             {
 859                 // if we don't do this, no focus events are generated for the
 860                 // radiobox and, besides, we need to notify the parent about
 861                 // the focus change, otherwise the focus handling logic in
 862                 // wxControlContainer doesn't work
 863                 if ( message == WM_SETFOCUS )
 864                     radiobox->HandleSetFocus((WXHWND)wParam);
 865                 else
 866                     radiobox->HandleKillFocus((WXHWND)wParam);
 867             }
 868             break;
 869
 870 #ifndef __WXWINCE__
 871         case WM_HELP:
 872             {
 873                 bool processed = false;
 874
 875                 wxEvtHandler * const handler = radiobox->GetEventHandler();
 876
 877                 HELPINFO* info = (HELPINFO*) lParam;
 878                 if ( info->iContextType == HELPINFO_WINDOW )
 879                 {
 880                     for ( wxWindow* subjectOfHelp = radiobox;
 881                           subjectOfHelp;
 882                           subjectOfHelp = subjectOfHelp->GetParent() )
 883                     {
 884                         wxHelpEvent helpEvent(wxEVT_HELP,
 885                                               subjectOfHelp->GetId(),
 886                                               wxPoint(info->MousePos.x,
 887                                                       info->MousePos.y));
 888                         helpEvent.SetEventObject(radiobox);
 889                         if ( handler->ProcessEvent(helpEvent) )
 890                         {
 891                             processed = true;
 892                             break;
 893                         }
 894                     }
 895                 }
 896                 else if (info->iContextType == HELPINFO_MENUITEM)
 897                 {
 898                     wxHelpEvent helpEvent(wxEVT_HELP, info->iCtrlId);
 899                     helpEvent.SetEventObject(radiobox);
 900                     processed = handler->ProcessEvent(helpEvent);
 901                 }
 902
 903                 if ( processed )
 904                     return 0;
 905             }
 906             break;
 907 #endif // !__WXWINCE__
 908     }
 909
 910     return ::CallWindowProc(CASTWNDPROC s_wndprocRadioBtn, hwnd, message, wParam, lParam);
 911 }
 912
 913 #endif // wxUSE_RADIOBOX