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