src/os2/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/os2/radiobox.cpp
   3 // Purpose:     wxRadioBox
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/12/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_RADIOBOX
  16
  17 #include "wx/radiobox.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include <stdio.h>
  21     #include "wx/crt.h"
  22     #include "wx/string.h"
  23     #include "wx/bitmap.h"
  24     #include "wx/brush.h"
  25 #endif
  26
  27 #include "wx/os2/private.h"
  28
  29 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  30
  31 // ---------------------------------------------------------------------------
  32 // private functions
  33 // ---------------------------------------------------------------------------
  34
  35 // wnd proc for radio buttons
  36 MRESULT EXPENTRY wxRadioBtnWndProc( HWND hWnd
  37                                    ,UINT uMessage
  38                                    ,MPARAM wParam
  39                                    ,MPARAM lParam
  40                                   );
  41 MRESULT EXPENTRY wxRadioBoxWndProc( HWND   hWnd
  42                                    ,UINT   uMessage
  43                                    ,MPARAM wParam
  44                                    ,MPARAM lParam
  45                                   );
  46
  47 // ---------------------------------------------------------------------------
  48 // global vars
  49 // ---------------------------------------------------------------------------
  50
  51 extern void  wxAssociateWinWithHandle( HWND         hWnd
  52                                       ,wxWindowOS2* pWin
  53                                      );
  54 extern void wxRemoveHandleAssociation( wxWindowOS2 *pWin );
  55 // the pointer to standard radio button & box wnd procs
  56 static WXFARPROC                    fnWndProcRadioBtn = NULL;
  57 static WXFARPROC                    fnWndProcRadioBox = NULL;
  58
  59 // ===========================================================================
  60 // implementation
  61 // ===========================================================================
  62
  63 // ---------------------------------------------------------------------------
  64 // wxRadioBox
  65 // ---------------------------------------------------------------------------
  66
  67 // Radio box item
  68 wxRadioBox::wxRadioBox()
  69 {
  70     m_nSelectedButton = -1;
  71     m_nNoItems = 0;
  72     m_ahRadioButtons = NULL;
  73     m_pnRadioWidth = NULL;
  74     m_pnRadioHeight = NULL;
  75 } // end of wxRadioBox::wxRadioBox
  76
  77 wxRadioBox::~wxRadioBox()
  78 {
  79     m_isBeingDeleted = true;
  80
  81     if (m_hWnd)
  82         wxRemoveHandleAssociation(this);
  83     if (m_ahRadioButtons)
  84     {
  85         for (unsigned int i = 0; i < m_nNoItems; i++)
  86         {
  87             wxWindow* pWin = wxFindWinFromHandle((WXHWND)m_ahRadioButtons[i]);
  88             wxRemoveHandleAssociation(pWin);
  89
  90             ::WinDestroyWindow((HWND)m_ahRadioButtons[i]);
  91     }
  92         delete[] m_ahRadioButtons;
  93     }
  94     if (m_pnRadioWidth)
  95         delete[] m_pnRadioWidth;
  96     if (m_pnRadioHeight)
  97         delete[] m_pnRadioHeight;
  98 } // end of wxRadioBox::~wxRadioBox
  99
 100 void wxRadioBox::Command ( wxCommandEvent& rEvent )
 101 {
 102     SetSelection (rEvent.GetInt());
 103     ProcessCommand(rEvent);
 104 } // end of wxRadioBox::Command
 105
 106 bool wxRadioBox::ContainsHWND( WXHWND hWnd ) const
 107 {
 108     unsigned int nCount = GetCount();
 109     unsigned int i;
 110
 111     for (i = 0; i < nCount; i++)
 112     {
 113         if (GetRadioButtons()[i] == hWnd)
 114             return true;
 115     }
 116     return false;
 117 } // end of wxRadioBox::ContainsHWND
 118
 119 bool wxRadioBox::Create( wxWindow* pParent,
 120                          wxWindowID vId,
 121                          const wxString& rsTitle,
 122                          const wxPoint& rPos,
 123                          const wxSize& rSize,
 124                          const wxArrayString& asChoices,
 125                          int nMajorDim,
 126                          long lStyle,
 127                          const wxValidator& rVal,
 128                          const wxString& rsName )
 129 {
 130     wxCArrayString chs(asChoices);
 131
 132     return Create(pParent, vId, rsTitle, rPos, rSize, chs.GetCount(),
 133                   chs.GetStrings(), nMajorDim, lStyle, rVal, rsName);
 134 }
 135
 136 bool wxRadioBox::Create( wxWindow* pParent,
 137                          wxWindowID vId,
 138                          const wxString& rsTitle,
 139                          const wxPoint& rPos,
 140                          const wxSize& rSize,
 141                          int nNum,
 142                          const wxString asChoices[],
 143                          int nMajorDim,
 144                          long lStyle,
 145                          const wxValidator& rVal,
 146                          const wxString& rsName )
 147 {
 148     wxColour vColour(*wxBLACK);
 149     LONG     lColor;
 150     HWND     hWndParent = GetHwndOf(pParent);
 151
 152     m_backgroundColour = pParent->GetBackgroundColour();
 153     m_nSelectedButton = -1;
 154     m_nNoItems = 0;
 155
 156     //
 157     // Common initialization
 158     //
 159     if (!CreateControl( pParent
 160                        ,vId
 161                        ,rPos
 162                        ,rSize
 163                        ,lStyle
 164                        ,rVal
 165                        ,rsName
 166                       ))
 167         return false;
 168     if (!OS2CreateControl( wxT("STATIC")
 169                           ,SS_GROUPBOX
 170                           ,rPos
 171                           ,rSize
 172                           ,rsTitle
 173                          ))
 174         return false;
 175
 176     wxAssociateWinWithHandle(m_hWnd, this);
 177
 178     //
 179     // Now we can set m_nNoItems and let SetMajorDim set m_numCols/m_numRows
 180     //
 181     m_nNoItems = (unsigned int)nNum;
 182     SetMajorDim(nMajorDim == 0 ? nNum : nMajorDim, lStyle);
 183
 184     m_ahRadioButtons = new WXHWND[nNum];
 185     m_pnRadioWidth   = new int[nNum];
 186     m_pnRadioHeight  = new int[nNum];
 187
 188     for (int i = 0; i < nNum; i++)
 189     {
 190         m_pnRadioWidth[i] = m_pnRadioHeight[i] = -1;
 191         long                        lStyleBtn = BS_AUTORADIOBUTTON | WS_VISIBLE;
 192         int                         nNewId = NewControlId();
 193
 194         if (i == 0)
 195             lStyleBtn |= WS_GROUP | WS_TABSTOP;
 196
 197         wxString                    sLabel = ::wxPMTextToLabel(asChoices[i]);
 198
 199         HWND                        hWndBtn = (WXHWND)::WinCreateWindow ( hWndParent,
 200                                                                           WC_BUTTON,
 201                                                                           sLabel.c_str(),
 202                                                                           lStyleBtn,
 203                                                                           0, 0, 0, 0,
 204                                                                           hWndParent,
 205                                                                           HWND_BOTTOM,
 206                                                                           (HMENU)nNewId,
 207                                                                           NULL,
 208                                                                           NULL
 209                                                                         );
 210         if (!hWndBtn)
 211         {
 212             return false;
 213         }
 214         lColor = (LONG)vColour.GetPixel();
 215         ::WinSetPresParam( hWndBtn
 216                           ,PP_FOREGROUNDCOLOR
 217                           ,sizeof(LONG)
 218                           ,(PVOID)&lColor
 219                          );
 220
 221         lColor = (LONG)m_backgroundColour.GetPixel();
 222         ::WinSetPresParam( hWndBtn
 223                           ,PP_BACKGROUNDCOLOR
 224                           ,sizeof(LONG)
 225                           ,(PVOID)&lColor
 226                          );
 227         m_ahRadioButtons[i] = (WXHWND)hWndBtn;
 228         SubclassRadioButton((WXHWND)hWndBtn);
 229         wxAssociateWinWithHandle(hWndBtn, this);
 230         wxOS2SetFont( hWndBtn
 231                      ,*wxSMALL_FONT
 232                     );
 233         ::WinSetWindowULong(hWndBtn, QWL_USER, (ULONG)this);
 234         m_aSubControls.Add(nNewId);
 235     }
 236
 237     //
 238     // Create a dummy control to end the group.
 239     //
 240     (void)::WinCreateWindow ( hWndParent,
 241                               WC_BUTTON,
 242                               "",
 243                               WS_GROUP,
 244                               0, 0, 0, 0,
 245                               hWndParent,
 246                               HWND_TOP,
 247                               (HMENU)NewControlId(),
 248                               NULL,
 249                               NULL
 250                             );
 251     fnWndProcRadioBox = (WXFARPROC)::WinSubclassWindow( GetHwnd()
 252                                                        ,(PFNWP)wxRadioBoxWndProc
 253                                                       );
 254     ::WinSetWindowULong(GetHwnd(), QWL_USER, (ULONG)this);
 255     lColor = (LONG)vColour.GetPixel();
 256     ::WinSetPresParam( m_hWnd
 257                       ,PP_FOREGROUNDCOLOR
 258                       ,sizeof(LONG)
 259                       ,(PVOID)&lColor
 260                      );
 261
 262     lColor = (LONG)m_backgroundColour.GetPixel();
 263     ::WinSetPresParam( m_hWnd
 264                       ,PP_BACKGROUNDCOLOR
 265                       ,sizeof(LONG)
 266                       ,(PVOID)&lColor
 267                      );
 268     SetXComp(0);
 269     SetYComp(0);
 270     SetSelection(0);
 271     SetSize( rPos.x
 272             ,rPos.y
 273             ,rSize.x
 274             ,rSize.y
 275            );
 276     return true;
 277 } // end of wxRadioBox::Create
 278
 279 wxSize wxRadioBox::DoGetBestSize() const
 280 {
 281     return (GetTotalButtonSize(GetMaxButtonSize()));
 282 } // end of wxRadioBox::DoGetBestSize
 283
 284 void wxRadioBox::DoSetSize(
 285   int                               nX
 286 , int                               nY
 287 , int                               nWidth
 288 , int                               nHeight
 289 , int                               nSizeFlags
 290 )
 291 {
 292     //
 293     // Input parameters assume wxWidgets coordinate system
 294     //
 295     int                             nCurrentX;
 296     int                             nCurrentY;
 297     int                             nWidthOld;
 298     int                             nHeightOld;
 299     int                             nXx = nX;
 300     int                             nYy = nY;
 301     int                             nXOffset = nXx;
 302     int                             nYOffset = nYy;
 303     int                             nCx1;
 304     int                             nCy1;
 305     wxSize                          vMaxSize = GetMaxButtonSize();
 306     int                             nMaxWidth;
 307     int                             nMaxHeight;
 308     wxSize                          vTotSize;
 309     int                             nTotWidth;
 310     int                             nTotHeight;
 311     int                             nStartX;
 312     int                             nStartY;
 313     wxFont                          vFont = GetFont();
 314
 315     m_nSizeFlags = nSizeFlags;
 316     GetPosition( &nCurrentX
 317                 ,&nCurrentY
 318                );
 319     GetSize( &nWidthOld
 320             ,&nHeightOld
 321            );
 322
 323     if (nX == wxDefaultCoord && !(nSizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 324         nXx = nCurrentX;
 325     if (nY == wxDefaultCoord && !(nSizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 326         nYy = nCurrentY;
 327     if (nYy < 0)
 328         nYy = 0;
 329     if (nXx < 0)
 330         nXx = 0;
 331
 332     wxGetCharSize( m_hWnd
 333                   ,&nCx1
 334                   ,&nCy1
 335                   ,&vFont
 336                  );
 337
 338     //
 339     // Attempt to have a look coherent with other platforms: We compute the
 340     // biggest toggle dim, then we align all items according this value.
 341     //
 342     vMaxSize   = GetMaxButtonSize();
 343     nMaxWidth  = vMaxSize.x;
 344     nMaxHeight = vMaxSize.y;
 345
 346     vTotSize   = GetTotalButtonSize(vMaxSize);
 347     nTotWidth  = vTotSize.x;
 348     nTotHeight = vTotSize.y;
 349
 350     //
 351     // Only change our width/height if asked for
 352     //
 353     if (nWidth == -1)
 354     {
 355         if (nSizeFlags & wxSIZE_AUTO_WIDTH )
 356             nWidth = nTotWidth;
 357         else
 358             nWidth = nWidthOld;
 359     }
 360
 361     if (nHeight == -1)
 362     {
 363         if (nSizeFlags & wxSIZE_AUTO_HEIGHT)
 364             nHeight = nTotHeight;
 365         else
 366             nHeight = nHeightOld;
 367     }
 368
 369     //
 370     // Now convert to OS/2 coordinate system
 371     //
 372     wxWindowOS2*                    pParent = (wxWindowOS2*)GetParent();
 373     if (pParent)
 374         nYy = GetOS2ParentHeight(pParent) - nYy - nHeight;
 375     else
 376     {
 377         RECTL                       vRect;
 378         ::WinQueryWindowRect(HWND_DESKTOP, &vRect);
 379         nYy = vRect.yTop - nYy - nHeight;
 380     }
 381     nYOffset = nYy + nHeight;
 382     ::WinSetWindowPos( GetHwnd()
 383                       ,HWND_TOP
 384                       ,(LONG)nXx
 385                       ,(LONG)nYy
 386                       ,(LONG)nWidth
 387                       ,(LONG)nHeight
 388                       ,SWP_ZORDER | SWP_SIZE | SWP_MOVE | SWP_SHOW
 389                      );
 390
 391     //
 392     // Now position all the buttons: the current button will be put at
 393     // wxPoint(x_offset, y_offset) and the new row/column will start at
 394     // startX/startY. The size of all buttons will be the same wxSize(maxWidth,
 395     // maxHeight) except for the buttons in the last column which should extend
 396     // to the right border of radiobox and thus can be wider than this.
 397     //
 398     // Also, remember that wxRA_SPECIFY_COLS means that we arrange buttons in
 399     // left to right order and m_majorDim is the number of columns while
 400     // wxRA_SPECIFY_ROWS means that the buttons are arranged top to bottom and
 401     // m_majorDim is the number of rows.
 402     //
 403     nXOffset += nCx1;
 404     nYOffset -= (nMaxHeight + ((3*nCy1)/2));
 405
 406     nStartX = nXOffset;
 407     nStartY = nYOffset;
 408
 409     for (unsigned int i = 0; i < m_nNoItems; i++)
 410     {
 411         //
 412         // The last button in the row may be wider than the other ones as the
 413         // radiobox may be wider than the sum of the button widths (as it
 414         // happens, for example, when the radiobox label is very long)
 415         //
 416         bool bIsLastInTheRow;
 417
 418         if (m_windowStyle & wxRA_SPECIFY_COLS)
 419         {
 420             //
 421             // Item is the last in its row if it is a multiple of the number of
 422             // columns or if it is just the last item
 423             //
 424             int                  n = i + 1;
 425
 426             bIsLastInTheRow = ((n % GetMajorDim()) == 0) || (n == (int)m_nNoItems);
 427         }
 428         else // winRA_SPECIFY_ROWS
 429         {
 430             //
 431             // Item is the last in the row if it is in the last columns
 432             //
 433             bIsLastInTheRow = i >= (m_nNoItems/GetMajorDim()) * GetMajorDim();
 434         }
 435
 436         //
 437         // Is this the start of new row/column?
 438         //
 439         if (i && (i % GetMajorDim() == 0))
 440         {
 441             if (m_windowStyle & wxRA_SPECIFY_ROWS)
 442             {
 443                 //
 444                 // Start of new column
 445                 //
 446                 nYOffset = nStartY;
 447                 nXOffset += nMaxWidth + nCx1;
 448             }
 449             else // start of new row
 450             {
 451                 nXOffset = nStartX;
 452                 nYOffset -= nMaxHeight;
 453                 if (m_pnRadioWidth[0] > 0L)
 454                     nYOffset -= nCy1/2;
 455             }
 456         }
 457
 458         int                      nWidthBtn;
 459
 460         if (bIsLastInTheRow)
 461         {
 462             //
 463             // Make the button go to the end of radio box
 464             //
 465             nWidthBtn = nStartX + nWidth - nXOffset - (2 * nCx1);
 466             if (nWidthBtn < nMaxWidth)
 467                 nWidthBtn = nMaxWidth;
 468         }
 469         else
 470         {
 471             //
 472             // Normal button, always of the same size
 473             //
 474             nWidthBtn = nMaxWidth;
 475         }
 476
 477         //
 478         // Make all buttons of the same, maximal size - like this they
 479         // cover the radiobox entirely and the radiobox tooltips are always
 480         // shown (otherwise they are not when the mouse pointer is in the
 481         // radiobox part not belonging to any radiobutton)
 482         //
 483         ::WinSetWindowPos( (HWND)m_ahRadioButtons[i]
 484                           ,HWND_BOTTOM
 485                           ,(LONG)nXOffset
 486                           ,(LONG)nYOffset
 487                           ,(LONG)nWidthBtn
 488                           ,(LONG)nMaxHeight
 489                           ,SWP_ZORDER | SWP_SIZE | SWP_MOVE | SWP_SHOW
 490                          );
 491         //
 492         // Where do we put the next button?
 493         //
 494         if (m_windowStyle & wxRA_SPECIFY_ROWS)
 495         {
 496             //
 497             // Below this one
 498             //
 499             nYOffset -= nMaxHeight;
 500             if (m_pnRadioWidth[0] > 0)
 501                 nYOffset -= nCy1/2;
 502         }
 503         else
 504         {
 505             //
 506             // To the right of this one
 507             //
 508             nXOffset += nWidthBtn + nCx1;
 509         }
 510     }
 511 } // end of wxRadioBox::DoSetSize
 512
 513 bool wxRadioBox::Enable(unsigned int nItem, bool bEnable)
 514 {
 515     wxCHECK_MSG( IsValid(nItem), false,
 516                  wxT("invalid item in wxRadioBox::Enable()") );
 517
 518     ::WinEnableWindow((HWND) m_ahRadioButtons[nItem], bEnable);
 519     return true;
 520 } // end of wxRadioBox::Enable
 521
 522 bool wxRadioBox::Enable(bool bEnable)
 523 {
 524     if ( !wxControl::Enable(bEnable) )
 525         return false;
 526     for (unsigned int i = 0; i < m_nNoItems; i++)
 527         ::WinEnableWindow((HWND)m_ahRadioButtons[i], bEnable);
 528     return true;
 529 } // end of wxRadioBox::Enable
 530
 531 unsigned int wxRadioBox::GetCount() const
 532 {
 533     return m_nNoItems;
 534 } // end of wxRadioBox::GetCount
 535
 536 wxString wxRadioBox::GetLabel(int nItem) const
 537 {
 538     wxCHECK_MSG( IsValid(nItem), wxEmptyString, wxT("invalid radiobox index") );
 539
 540     return wxGetWindowText(m_ahRadioButtons[nItem]);
 541 } // end of wxRadioBox::GetLabel
 542
 543 wxSize wxRadioBox::GetMaxButtonSize() const
 544 {
 545     int nWidthMax = 0;
 546     int nHeightMax = 0;
 547
 548     for (unsigned int i = 0 ; i < m_nNoItems; i++)
 549     {
 550         int nWidth;
 551         int nHeight;
 552
 553         if (m_pnRadioWidth[i] < 0L)
 554         {
 555             GetTextExtent( wxGetWindowText(m_ahRadioButtons[i])
 556                           ,&nWidth
 557                           ,&nHeight
 558                          );
 559
 560             //
 561             // Adjust the size to take into account the radio box itself
 562             // FIXME this is totally bogus!
 563             //
 564             nWidth  += RADIO_SIZE;
 565             nHeight *= 3;
 566             nHeight /= 2;
 567         }
 568         else
 569         {
 570             nWidth  = m_pnRadioWidth[i];
 571             nHeight = m_pnRadioHeight[i];
 572         }
 573         if (nWidthMax < nWidth )
 574             nWidthMax = nWidth;
 575         if (nHeightMax < nHeight )
 576             nHeightMax = nHeight;
 577     }
 578     wxSize maxsize( nWidthMax, nHeightMax);
 579     return maxsize;
 580 } // end of wxRadioBox::GetMaxButtonSize
 581
 582 // Get single selection, for single choice list items
 583 int wxRadioBox::GetSelection() const
 584 {
 585     return m_nSelectedButton;
 586 } // end of wxRadioBox::GetSelection
 587
 588 void wxRadioBox::GetSize( int* pnWidth, int* pnHeight ) const
 589 {
 590     RECT vRect;
 591
 592     vRect.xLeft   = -1;
 593     vRect.xRight  = -1;
 594     vRect.yTop    = -1;
 595     vRect.yBottom = -1;
 596
 597     if (m_hWnd)
 598         wxFindMaxSize( m_hWnd, &vRect );
 599
 600     for (unsigned int i = 0; i < m_nNoItems; i++)
 601         wxFindMaxSize( m_ahRadioButtons[i], &vRect );
 602
 603     if (pnWidth)
 604         *pnWidth  = vRect.xRight - vRect.xLeft;
 605     if (pnHeight)
 606         *pnHeight = vRect.yTop - vRect.yBottom;
 607 } // end of wxRadioBox::GetSize
 608
 609 // Find string for position
 610 wxString wxRadioBox::GetString(unsigned int nNum) const
 611 {
 612     wxCHECK_MSG( IsValid(nNum), wxEmptyString, wxT("invalid radiobox index") );
 613     return wxGetWindowText(m_ahRadioButtons[nNum]);
 614 } // end of wxRadioBox::GetString
 615
 616 // For single selection items only
 617 wxString wxRadioBox::GetStringSelection() const
 618 {
 619     wxString sResult;
 620     int nSel = GetSelection();
 621
 622     if (nSel != wxNOT_FOUND)
 623         sResult = GetString(nSel);
 624
 625     return sResult;
 626 } // end of wxRadioBox::GetStringSelection
 627
 628 wxSize wxRadioBox::GetTotalButtonSize( const wxSize& rSizeBtn ) const
 629 {
 630     int    nCx1;
 631     int    nCy1;
 632     int    nHeight;
 633     int    nWidth;
 634     int    nWidthLabel = 0;
 635
 636     nCx1 = GetCharWidth();
 637     nCy1 = GetCharHeight();
 638     nHeight = GetRowCount() * rSizeBtn.y + (2 * nCy1);
 639     nWidth  = GetColumnCount() * (rSizeBtn.x + nCx1) + nCx1;
 640
 641     //
 642     // And also wide enough for its label
 643     //
 644     wxString sStr = wxGetWindowText(GetHwnd());
 645     if (!sStr.empty())
 646     {
 647         GetTextExtent( sStr
 648                       ,&nWidthLabel
 649                       ,NULL
 650                      );
 651         nWidthLabel += 2*nCx1;
 652     }
 653     if (nWidthLabel > nWidth)
 654         nWidth = nWidthLabel;
 655
 656     wxSize total( nWidth, nHeight );
 657     return total;
 658 } // end of wxRadioBox::GetTotalButtonSize
 659
 660 WXHBRUSH wxRadioBox::OnCtlColor( WXHDC    hwinDC,
 661                                  WXHWND   WXUNUSED(hWnd),
 662                                  WXUINT   WXUNUSED(uCtlColor),
 663                                  WXUINT   WXUNUSED(uMessage),
 664                                  WXWPARAM WXUNUSED(wParam),
 665                                  WXLPARAM WXUNUSED(lParam) )
 666 {
 667     HPS hPS = (HPS)hwinDC; // pass in a PS handle in OS/2
 668
 669     if (GetParent()->GetTransparentBackground())
 670         ::GpiSetBackMix(hPS, BM_LEAVEALONE);
 671     else
 672         ::GpiSetBackMix(hPS, BM_OVERPAINT);
 673
 674     wxColour vColBack = GetBackgroundColour();
 675
 676     ::GpiSetBackColor(hPS, vColBack.GetPixel());
 677     ::GpiSetColor(hPS, vColBack.GetPixel());
 678
 679     wxBrush* pBrush = wxTheBrushList->FindOrCreateBrush( vColBack, wxSOLID );
 680     return ((WXHBRUSH)pBrush->GetResourceHandle());
 681 } // end of wxRadioBox::OnCtlColor
 682
 683 bool wxRadioBox::OS2Command( WXUINT uCmd,
 684                              WXWORD wId)
 685 {
 686     int nSelectedButton = -1;
 687
 688     if (uCmd == BN_CLICKED)
 689     {
 690         if (wId == GetId())
 691             return true;
 692
 693         for (unsigned int i = 0; i < m_nNoItems; i++)
 694         {
 695             if (wId == wxGetWindowId(m_ahRadioButtons[i]))
 696             {
 697                 nSelectedButton = i;
 698                 break;
 699             }
 700         }
 701         if (nSelectedButton == -1)
 702         {
 703             //
 704             // Just ignore it
 705             //
 706             return false;
 707         }
 708         if (nSelectedButton != m_nSelectedButton)
 709         {
 710             m_nSelectedButton = nSelectedButton;
 711             SendNotificationEvent();
 712         }
 713         return true;
 714     }
 715     else
 716         return false;
 717 } // end of wxRadioBox::OS2Command
 718
 719 void wxRadioBox::SendNotificationEvent()
 720 {
 721     wxCommandEvent vEvent(
 722                        wxEVT_COMMAND_RADIOBOX_SELECTED,
 723                        m_windowId
 724                    );
 725
 726     vEvent.SetInt( m_nSelectedButton );
 727     vEvent.SetString( GetString(m_nSelectedButton) );
 728     vEvent.SetEventObject(this);
 729     ProcessCommand(vEvent);
 730 } // end of wxRadioBox::SendNotificationEvent
 731
 732 void wxRadioBox::SetFocus()
 733 {
 734     if (m_nNoItems > 0)
 735     {
 736         if (m_nSelectedButton == -1)
 737             ::WinSetFocus(HWND_DESKTOP, (HWND)m_ahRadioButtons[0]);
 738         else
 739             ::WinSetFocus(HWND_DESKTOP, (HWND)m_ahRadioButtons[m_nSelectedButton]);
 740     }
 741 } // end of wxRadioBox::SetFocus
 742
 743 bool wxRadioBox::SetFont(const wxFont& rFont)
 744 {
 745     if (!wxControl::SetFont(rFont))
 746     {
 747         //
 748         // Nothing to do
 749         //
 750         return false;
 751     }
 752     //
 753     // Also set the font of our radio buttons
 754     //
 755     for (unsigned int n = 0; n < m_nNoItems; n++)
 756     {
 757         HWND hWndBtn = (HWND)m_ahRadioButtons[n];
 758
 759         wxOS2SetFont( hWndBtn, rFont );
 760         ::WinInvalidateRect(hWndBtn, NULL, FALSE);
 761     }
 762     return true;
 763 } // end of wxRadioBox::SetFont
 764
 765 void wxRadioBox::SetSelection(
 766   int                               nNum
 767 )
 768 {
 769     wxCHECK_RET( IsValid(nNum), wxT("invalid radiobox index") );
 770
 771     if ( IsValid(m_nSelectedButton) )
 772         ::WinSendMsg((HWND)m_ahRadioButtons[m_nSelectedButton], BM_SETCHECK, (MPARAM)0, (MPARAM)0);
 773
 774     ::WinSendMsg((HWND)m_ahRadioButtons[nNum], BM_SETCHECK, (MPARAM)1, (MPARAM)0);
 775     ::WinSetFocus(HWND_DESKTOP, (HWND)m_ahRadioButtons[nNum]);
 776     m_nSelectedButton = nNum;
 777 } // end of wxRadioBox::SetSelection
 778
 779 void wxRadioBox::SetString(unsigned int nItem, const wxString& rsLabel)
 780 {
 781     wxCHECK_RET( IsValid(nItem), wxT("invalid radiobox index") );
 782
 783     m_pnRadioWidth[nItem] = m_pnRadioHeight[nItem] = -1;
 784     ::WinSetWindowText((HWND)m_ahRadioButtons[nItem], rsLabel.c_str());
 785 } // end of wxRadioBox::SetString
 786
 787 bool wxRadioBox::SetStringSelection(const wxString& rsStr)
 788 {
 789     int nSel = FindString(rsStr);
 790
 791     if (nSel > -1)
 792     {
 793         SetSelection(nSel);
 794         return true;
 795     }
 796     else
 797         return false;
 798 } // end of wxRadioBox::SetStringSelection
 799
 800 bool wxRadioBox::Show(bool bShow)
 801 {
 802     if (!wxControl::Show(bShow))
 803         return false;
 804
 805     for (unsigned int i = 0; i < m_nNoItems; i++)
 806     {
 807         ::WinShowWindow((HWND)m_ahRadioButtons[i], (BOOL)bShow);
 808     }
 809     return true;
 810 } // end of wxRadioBox::Show
 811
 812 // Show a specific button
 813 bool wxRadioBox::Show(unsigned int nItem, bool bShow)
 814 {
 815     wxCHECK_MSG( IsValid(nItem), false,
 816                  wxT("invalid item in wxRadioBox::Show()") );
 817
 818     ::WinShowWindow((HWND)m_ahRadioButtons[nItem], bShow);
 819
 820     return true;
 821 } // end of wxRadioBox::Show
 822
 823 void wxRadioBox::SubclassRadioButton(
 824   WXHWND                            hWndBtn
 825 )
 826 {
 827     fnWndProcRadioBtn = (WXFARPROC)::WinSubclassWindow(hWndBtn, (PFNWP)wxRadioBtnWndProc);
 828 } // end of wxRadioBox::SubclassRadioButton
 829
 830 MRESULT wxRadioBox::WindowProc(
 831   WXUINT                            uMsg
 832 , WXWPARAM                          wParam
 833 , WXLPARAM                          lParam
 834 )
 835 {
 836     return (wxControl::OS2WindowProc( uMsg
 837                                      ,wParam
 838                                      ,lParam
 839                                     ));
 840 } // end of wxRadioBox::WindowProc
 841
 842 // ---------------------------------------------------------------------------
 843 // window proc for radio buttons
 844 // ---------------------------------------------------------------------------
 845
 846 MRESULT wxRadioBtnWndProc(
 847   HWND                              hWnd
 848 , UINT                              uMessage
 849 , MPARAM                            wParam
 850 , MPARAM                            lParam
 851 )
 852 {
 853     switch (uMessage)
 854     {
 855         case WM_CHAR:
 856             {
 857                 USHORT                  uKeyFlags = SHORT1FROMMP((MPARAM)wParam);
 858
 859                 if (!(uKeyFlags & KC_KEYUP)) // Key Down event
 860                 {
 861                     if (uKeyFlags & KC_VIRTUALKEY)
 862                     {
 863                         wxRadioBox*             pRadiobox = (wxRadioBox *)::WinQueryWindowULong( hWnd
 864                                                                                                 ,QWL_USER
 865                                                                                                );
 866                         USHORT                  uVk = SHORT2FROMMP((MPARAM)lParam);
 867                         bool                    bProcessed = true;
 868                         wxDirection             eDir;
 869
 870                         switch(uVk)
 871                         {
 872                             case VK_LEFT:
 873                                 eDir = wxLEFT;
 874                                 break;
 875
 876                             case VK_RIGHT:
 877                                 eDir = wxRIGHT;
 878                                 break;
 879
 880                             case VK_DOWN:
 881                                 eDir = wxDOWN;
 882                                 break;
 883
 884                             case VK_UP:
 885                                 eDir = wxUP;
 886                                 break;
 887
 888                             default:
 889                                 bProcessed = false;
 890
 891                                 //
 892                                 // Just to suppress the compiler warning
 893                                 //
 894                                 eDir = wxALL;
 895                         }
 896
 897                         if (bProcessed)
 898                         {
 899                             int             nSelOld = pRadiobox->GetSelection();
 900                             int             nSelNew = pRadiobox->GetNextItem( nSelOld
 901                                                                              ,eDir
 902                                                                              ,pRadiobox->GetWindowStyleFlag()
 903                                                                             );
 904
 905                             if (nSelNew != nSelOld)
 906                             {
 907                                 pRadiobox->SetSelection(nSelNew);
 908
 909                                 //
 910                                 // Emulate the button click
 911                                 //
 912                                 pRadiobox->SendNotificationEvent();
 913                                 return 0;
 914                             }
 915                         }
 916                     }
 917                 }
 918             }
 919             break;
 920     }
 921
 922     return fnWndProcRadioBtn( hWnd
 923                              ,(ULONG)uMessage
 924                              ,(MPARAM)wParam
 925                              ,(MPARAM)lParam
 926                             );
 927 } // end of wxRadioBtnWndProc
 928
 929 MRESULT EXPENTRY wxRadioBoxWndProc( HWND hWnd,
 930                                     UINT uMessage,
 931                                     MPARAM wParam,
 932                                     MPARAM lParam )
 933 {
 934     return (fnWndProcRadioBox( hWnd,
 935                                (ULONG)uMessage,
 936                                (MPARAM)wParam,
 937                                (MPARAM)lParam )
 938            );
 939 } // end of wxRadioBoxWndProc
 940
 941 #endif // wxUSE_RADIOBOX