src/msw/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobox.cpp
   3 // Purpose:     wxRadioBox
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "radiobox.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include <stdio.h>
  25 #include "wx/setup.h"
  26 #include "wx/radiobox.h"
  27 #endif
  28
  29 #include "wx/msw/private.h"
  30
  31 #if !USE_SHARED_LIBRARY
  32 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  33 #endif
  34
  35 bool wxRadioBox::MSWCommand(WXUINT param, WXWORD id)
  36 {
  37   if (param == BN_CLICKED)
  38   {
  39 #ifdef __WIN32__
  40     int i;
  41     for (i = 0; i < m_noItems; i++)
  42       if (id == GetWindowLong((HWND) m_radioButtons[i], GWL_ID))
  43         m_selectedButton = i;
  44 #else
  45     int i;
  46     for (i = 0; i < m_noItems; i++)
  47       if (id == GetWindowWord((HWND) m_radioButtons[i], GWW_ID))
  48         m_selectedButton = i;
  49 #endif
  50
  51     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, m_windowId);
  52     event.SetInt( m_selectedButton );
  53     event.SetEventObject( this );
  54     ProcessCommand(event);
  55     return TRUE;
  56   }
  57   else return FALSE;
  58 }
  59
  60 #if WXWIN_COMPATIBILITY
  61 wxRadioBox::wxRadioBox(wxWindow *parent, wxFunction func, const char *title,
  62              int x, int y, int width, int height,
  63              int n, char **choices,
  64              int majorDim, long style, const char *name)
  65 {
  66     wxString *choices2 = new wxString[n];
  67     for ( int i = 0; i < n; i ++) choices2[i] = choices[i];
  68     Create(parent, -1, title, wxPoint(x, y), wxSize(width, height), n, choices2, majorDim, style,
  69         wxDefaultValidator, name);
  70     Callback(func);
  71     delete choices2;
  72 }
  73
  74 #endif
  75
  76 // Radio box item
  77 wxRadioBox::wxRadioBox(void)
  78 {
  79   m_selectedButton = -1;
  80   m_noItems = 0;
  81   m_noRowsOrCols = 0;
  82   m_radioButtons = NULL;
  83   m_majorDim = 0 ;
  84   m_radioWidth = NULL ;
  85   m_radioHeight = NULL ;
  86 }
  87
  88 bool wxRadioBox::Create(wxWindow *parent, wxWindowID id, const wxString& title,
  89              const wxPoint& pos, const wxSize& size,
  90              int n, const wxString choices[],
  91              int majorDim, long style,
  92              const wxValidator& val, const wxString& name)
  93 {
  94   m_selectedButton = -1;
  95   m_noItems = n;
  96
  97   SetName(name);
  98   SetValidator(val);
  99
 100   parent->AddChild(this);
 101   m_backgroundColour = parent->GetBackgroundColour() ;
 102   m_foregroundColour = parent->GetForegroundColour() ;
 103
 104   m_windowStyle = (long&)style;
 105
 106   int x = pos.x;
 107   int y = pos.y;
 108   int width = size.x;
 109   int height = size.y;
 110
 111   if (id == -1)
 112     m_windowId = NewControlId();
 113   else
 114     m_windowId = id;
 115
 116   m_noRowsOrCols = majorDim;
 117   if (majorDim==0)
 118     m_majorDim = n ;
 119   else // Seemed to make sense to put this 'else' here...  (RD)
 120     m_majorDim = majorDim ;
 121
 122   long msStyle = GROUP_FLAGS;
 123
 124   bool want3D;
 125   WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
 126   // Even with extended styles, need to combine with WS_BORDER
 127   // for them to look right.
 128   if ( want3D || wxStyleHasBorder(m_windowStyle) )
 129     msStyle |= WS_BORDER;
 130
 131
 132   HWND the_handle = (HWND) parent->GetHWND() ;
 133
 134   m_hWnd = (WXHWND)::CreateWindowEx
 135                      (
 136                       (DWORD)exStyle,
 137                       GROUP_CLASS,
 138                       title,
 139                       msStyle,
 140                       0, 0, 0, 0,
 141                       the_handle,
 142                       (HMENU)m_windowId,
 143                       wxGetInstance(),
 144                       NULL
 145                      );
 146
 147 #if CTL3D
 148   if (want3D)
 149   {
 150     Ctl3dSubclassCtl((HWND)m_hWnd);
 151     m_useCtl3D = TRUE;
 152   }
 153 #endif
 154
 155   SetFont(* parent->GetFont());
 156
 157   SubclassWin((WXHWND)m_hWnd);
 158
 159   // Some radio boxes test consecutive id.
 160   (void)NewControlId() ;
 161   m_radioButtons = new WXHWND[n];
 162   m_radioWidth = new int[n] ;
 163   m_radioHeight = new int[n] ;
 164   int i;
 165   for (i = 0; i < n; i++)
 166   {
 167     m_radioWidth[i] = m_radioHeight[i] = -1 ;
 168     long groupStyle = 0;
 169     if (i == 0 && style==0)
 170       groupStyle = WS_GROUP;
 171     long newId = NewControlId();
 172     long msStyle = groupStyle | RADIO_FLAGS;
 173
 174     m_radioButtons[i] = (WXHWND) CreateWindowEx(exStyle, RADIO_CLASS, choices[i],
 175                           msStyle,0,0,0,0,
 176                           the_handle, (HMENU)newId, wxGetInstance(), NULL);
 177 #if CTL3D
 178   if (want3D)
 179   {
 180     Ctl3dSubclassCtl((HWND) m_hWnd);
 181    m_useCtl3D = TRUE;
 182   }
 183 #endif
 184     if (GetFont())
 185     {
 186        SendMessage((HWND)m_radioButtons[i],WM_SETFONT,
 187                     (WPARAM)GetFont()->GetResourceHandle(),0L);
 188     }
 189     m_subControls.Append((wxObject *)newId);
 190   }
 191
 192   // Create a dummy radio control to end the group.
 193   (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP|RADIO_FLAGS, 0,0,0,0, the_handle, (HMENU)NewControlId(), wxGetInstance(), NULL);
 194
 195   SetSelection(0);
 196
 197   SetSize(x, y, width, height);
 198
 199   return TRUE;
 200 }
 201
 202 #if 0
 203 bool wxRadioBox::Create(wxWindow *parent, wxWindowID id, const wxString& title,
 204              const wxPoint& pos, const wxSize& size,
 205              int n, const wxBitmap *choices[],
 206              int majorDim, long style,
 207              const wxValidator& val, const wxString& name)
 208 {
 209   m_selectedButton = -1;
 210   m_noRowsOrCols = 0;
 211   m_noItems = n;
 212
 213   SetName(name);
 214   SetValidator(val);
 215
 216   parent->AddChild(this);
 217   m_backgroundColour = parent->GetBackgroundColour() ;
 218   m_foregroundColour = parent->GetForegroundColour() ;
 219
 220   m_windowStyle = (long&)style;
 221
 222   int x = pos.x;
 223   int y = pos.y;
 224   int width = size.x;
 225   int height = size.y;
 226
 227   if (id == -1)
 228     m_windowId = NewControlId();
 229   else
 230     m_windowId = id;
 231
 232
 233   m_noRowsOrCols = majorDim;
 234   if (majorDim==0)
 235     m_majorDim = n ;
 236   m_majorDim = majorDim ;
 237   HWND the_handle ;
 238
 239   long msStyle = GROUP_FLAGS;
 240
 241   bool want3D;
 242   WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
 243   // Even with extended styles, need to combine with WS_BORDER
 244   // for them to look right.
 245   if ( want3D || wxStyleHasBorder(m_windowStyle) )
 246     msStyle |= WS_BORDER;
 247
 248   m_hWnd = (WXHWND) CreateWindowEx((DWORD) exStyle, GROUP_CLASS, (title == "" ? NULL : (const char *)title),
 249                            msStyle,
 250                            0,0,0,0,
 251                            (HWND) parent->GetHWND(), (HMENU) m_windowId, wxGetInstance(), NULL) ;
 252
 253   the_handle = (HWND) parent->GetHWND();
 254
 255 #if CTL3D
 256   if (want3D)
 257   {
 258     Ctl3dSubclassCtl((HWND) m_hWnd);
 259    m_useCtl3D = TRUE;
 260   }
 261 #endif
 262
 263   SetFont(* parent->GetFont());
 264
 265   // Subclass again for purposes of dialog editing mode
 266   SubclassWin((WXHWND)m_hWnd);
 267
 268   (void)NewControlId() ;
 269   m_radioButtons = new WXHWND[n];
 270   m_radioWidth = new int[n] ;
 271   m_radioHeight = new int[n] ;
 272
 273   int i;
 274   for (i = 0; i < n; i++)
 275   {
 276     long groupStyle = 0;
 277     if (i == 0 && style==0)
 278       groupStyle = WS_GROUP;
 279     long newId = NewControlId();
 280     m_radioWidth[i]  = ((wxBitmap *)choices[i])->GetWidth();
 281     m_radioHeight[i] = ((wxBitmap *)choices[i])->GetHeight();
 282     char tmp[32] ;
 283     sprintf(tmp,"Toggle%d",i) ;
 284     long msStyle = groupStyle | RADIO_FLAGS;
 285     m_radioButtons[i] = (WXHWND) CreateWindowEx(exStyle, RADIO_CLASS, tmp,
 286                           msStyle,0,0,0,0,
 287                           the_handle, (HMENU)newId, wxhInstance, NULL);
 288 #if CTL3D
 289   if (want3D)
 290   {
 291     Ctl3dSubclassCtl((HWND) m_hWnd);
 292    m_useCtl3D = TRUE;
 293   }
 294 #endif
 295     m_subControls.Append((wxObject *)newId);
 296   }
 297   // Create a dummy radio control to end the group.
 298   (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP|RADIO_FLAGS, 0,0,0,0, the_handle, (HMENU)NewControlId(), wxGetInstance(), NULL);
 299
 300   SetSelection(0);
 301
 302   SetSize(x, y, width, height);
 303
 304   return TRUE;
 305 }
 306 #endif
 307
 308 wxRadioBox::~wxRadioBox(void)
 309 {
 310   m_isBeingDeleted = TRUE;
 311
 312   if (m_radioButtons)
 313   {
 314     int i;
 315     for (i = 0; i < m_noItems; i++)
 316       DestroyWindow((HWND) m_radioButtons[i]);
 317     delete[] m_radioButtons;
 318   }
 319   if (m_radioWidth)
 320     delete[] m_radioWidth ;
 321   if (m_radioHeight)
 322     delete[] m_radioHeight ;
 323   if (m_hWnd)
 324     ::DestroyWindow((HWND) m_hWnd) ;
 325   m_hWnd = 0 ;
 326
 327 }
 328
 329 wxString wxRadioBox::GetLabel(int item) const
 330 {
 331   GetWindowText((HWND)m_radioButtons[item], wxBuffer, 300);
 332   return wxString(wxBuffer);
 333 }
 334
 335 void wxRadioBox::SetLabel(int item, const wxString& label)
 336 {
 337   m_radioWidth[item] = m_radioHeight[item] = -1 ;
 338   SetWindowText((HWND)m_radioButtons[item], (const char *)label);
 339 }
 340
 341 void wxRadioBox::SetLabel(int item, wxBitmap *bitmap)
 342 {
 343 /*
 344     m_radioWidth[item] = bitmap->GetWidth() + FB_MARGIN ;
 345     m_radioHeight[item] = bitmap->GetHeight() + FB_MARGIN ;
 346 */
 347 }
 348
 349 int wxRadioBox::FindString(const wxString& s) const
 350 {
 351  int i;
 352  for (i = 0; i < m_noItems; i++)
 353  {
 354   GetWindowText((HWND) m_radioButtons[i], wxBuffer, 1000);
 355   if (s == wxBuffer)
 356     return i;
 357  }
 358  return -1;
 359 }
 360
 361 void wxRadioBox::SetSelection(int N)
 362 {
 363   if ((N < 0) || (N >= m_noItems))
 364     return;
 365
 366 // Following necessary for Win32s, because Win32s translate BM_SETCHECK
 367   if (m_selectedButton >= 0 && m_selectedButton < m_noItems)
 368     SendMessage((HWND) m_radioButtons[m_selectedButton], BM_SETCHECK, 0, 0L);
 369
 370   SendMessage((HWND) m_radioButtons[N], BM_SETCHECK, 1, 0L);
 371   m_selectedButton = N;
 372 }
 373
 374 // Get single selection, for single choice list items
 375 int wxRadioBox::GetSelection(void) const
 376 {
 377   return m_selectedButton;
 378 }
 379
 380 // Find string for position
 381 wxString wxRadioBox::GetString(int N) const
 382 {
 383   GetWindowText((HWND) m_radioButtons[N], wxBuffer, 1000);
 384   return wxString(wxBuffer);
 385 }
 386
 387 void wxRadioBox::SetSize(int x, int y, int width, int height, int sizeFlags)
 388 {
 389   int currentX, currentY;
 390   GetPosition(&currentX, &currentY);
 391   int xx = x;
 392   int yy = y;
 393
 394   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 395     xx = currentX;
 396   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 397     yy = currentY;
 398
 399   AdjustForParentClientOrigin(xx, yy, sizeFlags);
 400
 401   char buf[400];
 402
 403   int y_offset = yy;
 404   int x_offset = xx;
 405   int current_width, cyf;
 406
 407   int cx1,cy1 ;
 408   wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
 409   // Attempt to have a look coherent with other platforms:
 410   // We compute the biggest toggle dim, then we align all
 411   // items according this value.
 412   int maxWidth =  -1;
 413   int maxHeight = -1 ;
 414
 415   int i;
 416   for (i = 0 ; i < m_noItems; i++)
 417   {
 418     int eachWidth;
 419     int eachHeight ;
 420     if (m_radioWidth[i]<0)
 421     {
 422       // It's a labelled toggle
 423       GetWindowText((HWND) m_radioButtons[i], buf, 300);
 424       GetTextExtent(buf, &current_width, &cyf,NULL,NULL, GetFont());
 425       eachWidth = (int)(current_width + RADIO_SIZE);
 426       eachHeight = (int)((3*cyf)/2);
 427     }
 428     else
 429     {
 430       eachWidth = m_radioWidth[i] ;
 431       eachHeight = m_radioHeight[i] ;
 432     }
 433     if (maxWidth<eachWidth) maxWidth = eachWidth ;
 434     if (maxHeight<eachHeight) maxHeight = eachHeight ;
 435   }
 436
 437   if (m_hWnd)
 438   {
 439     int totWidth ;
 440     int totHeight;
 441
 442     int nbHor,nbVer;
 443
 444     if (m_windowStyle & wxRA_VERTICAL)
 445     {
 446       nbVer = m_majorDim ;
 447       nbHor = (m_noItems+m_majorDim-1)/m_majorDim ;
 448     }
 449     else
 450     {
 451       nbHor = m_majorDim ;
 452       nbVer = (m_noItems+m_majorDim-1)/m_majorDim ;
 453     }
 454
 455     // this formula works, but I don't know why.
 456     // Please, be sure what you do if you modify it!!
 457     if (m_radioWidth[0]<0)
 458       totHeight = (nbVer * maxHeight) + cy1/2 ;
 459     else
 460       totHeight = nbVer * (maxHeight+cy1/2) ;
 461     totWidth  = nbHor * (maxWidth+cx1) ;
 462
 463 #if (!CTL3D)
 464     // Requires a bigger group box in plain Windows
 465     MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+(3*cy1)/2,TRUE) ;
 466 #else
 467     MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+cy1,TRUE) ;
 468 #endif
 469     x_offset += cx1;
 470     y_offset += cy1;
 471   }
 472
 473 #if (!CTL3D)
 474   y_offset += (int)(cy1/2); // Fudge factor since buttons overlapped label
 475                             // JACS 2/12/93. CTL3D draws group label quite high.
 476 #endif
 477   int startX = x_offset ;
 478   int startY = y_offset ;
 479
 480   for ( i = 0 ; i < m_noItems; i++)
 481   {
 482     // Bidimensional radio adjustment
 483     if (i&&((i%m_majorDim)==0)) // Why is this omitted for i = 0?
 484     {
 485       if (m_windowStyle & wxRA_VERTICAL)
 486       {
 487         y_offset = startY;
 488         x_offset += maxWidth + cx1 ;
 489       }
 490       else
 491       {
 492         x_offset = startX ;
 493         y_offset += maxHeight ;
 494         if (m_radioWidth[0]>0)
 495           y_offset += cy1/2 ;
 496       }
 497     }
 498     int eachWidth ;
 499     int eachHeight ;
 500     if (m_radioWidth[i]<0)
 501     {
 502       // It's a labeled item
 503       GetWindowText((HWND) m_radioButtons[i], buf, 300);
 504       GetTextExtent(buf, &current_width, &cyf,NULL,NULL,GetFont());
 505
 506       // How do we find out radio button bitmap size!!
 507       // By adjusting them carefully, manually :-)
 508       eachWidth = (int)(current_width + RADIO_SIZE);
 509       eachHeight = (int)((3*cyf)/2);
 510     }
 511     else
 512     {
 513       eachWidth = m_radioWidth[i] ;
 514       eachHeight = m_radioHeight[i] ;
 515     }
 516
 517     MoveWindow((HWND) m_radioButtons[i],x_offset,y_offset,eachWidth,eachHeight,TRUE);
 518     if (m_windowStyle & wxRA_VERTICAL)
 519     {
 520       y_offset += maxHeight;
 521       if (m_radioWidth[0]>0)
 522         y_offset += cy1/2 ;
 523     }
 524     else
 525       x_offset += maxWidth + cx1;
 526   }
 527 }
 528
 529 void wxRadioBox::GetSize(int *width, int *height) const
 530 {
 531   RECT rect;
 532   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 533
 534   if (m_hWnd)
 535     wxFindMaxSize(m_hWnd, &rect);
 536
 537   int i;
 538   for (i = 0; i < m_noItems; i++)
 539     wxFindMaxSize(m_radioButtons[i], &rect);
 540
 541   *width = rect.right - rect.left;
 542   *height = rect.bottom - rect.top;
 543 }
 544
 545 void wxRadioBox::GetPosition(int *x, int *y) const
 546 {
 547   wxWindow *parent = GetParent();
 548   RECT rect;
 549   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 550
 551   int i;
 552   for (i = 0; i < m_noItems; i++)
 553     wxFindMaxSize(m_radioButtons[i], &rect);
 554
 555   if (m_hWnd)
 556     wxFindMaxSize(m_hWnd, &rect);
 557
 558   // Since we now have the absolute screen coords,
 559   // if there's a parent we must subtract its top left corner
 560   POINT point;
 561   point.x = rect.left;
 562   point.y = rect.top;
 563   if (parent)
 564   {
 565     ::ScreenToClient((HWND) parent->GetHWND(), &point);
 566   }
 567   // We may be faking the client origin.
 568   // So a window that's really at (0, 30) may appear
 569   // (to wxWin apps) to be at (0, 0).
 570   if (GetParent())
 571   {
 572     wxPoint pt(GetParent()->GetClientAreaOrigin());
 573     point.x -= pt.x;
 574     point.y -= pt.y;
 575   }
 576
 577   *x = point.x;
 578   *y = point.y;
 579 }
 580
 581 wxString wxRadioBox::GetLabel(void) const
 582 {
 583   if (m_hWnd)
 584   {
 585     GetWindowText((HWND) m_hWnd, wxBuffer, 300);
 586     return wxString(wxBuffer);
 587   }
 588   else return wxString("");
 589 }
 590
 591 void wxRadioBox::SetLabel(const wxString& label)
 592 {
 593   if (m_hWnd && label)
 594     SetWindowText((HWND) m_hWnd, label);
 595 }
 596
 597 void wxRadioBox::SetFocus(void)
 598 {
 599   if (m_noItems > 0)
 600   {
 601     if (m_selectedButton == -1)
 602       ::SetFocus((HWND) m_radioButtons[0]);
 603     else
 604       ::SetFocus((HWND) m_radioButtons[m_selectedButton]);
 605   }
 606
 607 }
 608
 609 bool wxRadioBox::Show(bool show)
 610 {
 611   int cshow;
 612   if (show)
 613     cshow = SW_SHOW;
 614   else
 615     cshow = SW_HIDE;
 616   if (m_hWnd)
 617     ShowWindow((HWND) m_hWnd, cshow);
 618   int i;
 619   for (i = 0; i < m_noItems; i++)
 620     ShowWindow((HWND) m_radioButtons[i], cshow);
 621   return TRUE;
 622 }
 623
 624 // Enable a specific button
 625 void wxRadioBox::Enable(int item, bool enable)
 626 {
 627   if (item<0)
 628     wxWindow::Enable(enable) ;
 629   else if (item < m_noItems)
 630     ::EnableWindow((HWND) m_radioButtons[item], enable);
 631 }
 632
 633 // Enable all controls
 634 void wxRadioBox::Enable(bool enable)
 635 {
 636   wxControl::Enable(enable);
 637
 638   int i;
 639   for (i = 0; i < m_noItems; i++)
 640     ::EnableWindow((HWND) m_radioButtons[i], enable);
 641 }
 642
 643 // Show a specific button
 644 void wxRadioBox::Show(int item, bool show)
 645 {
 646   if (item<0)
 647     wxRadioBox::Show(show) ;
 648   else if (item < m_noItems)
 649   {
 650     int cshow;
 651     if (show)
 652       cshow = SW_SHOW;
 653     else
 654       cshow = SW_HIDE;
 655     ShowWindow((HWND) m_radioButtons[item], cshow);
 656   }
 657 }
 658
 659 WXHBRUSH wxRadioBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 660       WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 661 {
 662 #if CTL3D
 663   if ( m_useCtl3D )
 664   {
 665     HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 666     return (WXHBRUSH) hbrush;
 667   }
 668 #endif
 669
 670   if (GetParent()->GetTransparentBackground())
 671     SetBkMode((HDC) pDC, TRANSPARENT);
 672   else
 673     SetBkMode((HDC) pDC, OPAQUE);
 674
 675   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 676   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 677
 678   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 679
 680   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 681   // has a zero usage count.
 682 //  backgroundBrush->RealizeResource();
 683   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 684 }
 685
 686 // For single selection items only
 687 wxString wxRadioBox::GetStringSelection (void) const
 688 {
 689   int sel = GetSelection ();
 690   if (sel > -1)
 691     return this->GetString (sel);
 692   else
 693     return wxString("");
 694 }
 695
 696 bool wxRadioBox::SetStringSelection (const wxString& s)
 697 {
 698   int sel = FindString (s);
 699   if (sel > -1)
 700     {
 701       SetSelection (sel);
 702       return TRUE;
 703     }
 704   else
 705     return FALSE;
 706 }
 707
 708 bool wxRadioBox::ContainsHWND(WXHWND hWnd) const
 709 {
 710   int i;
 711     for (i = 0; i < Number(); i++)
 712        if (GetRadioButtons()[i] == hWnd)
 713           return TRUE;
 714   return FALSE;
 715 }
 716
 717 void wxRadioBox::Command (wxCommandEvent & event)
 718 {
 719   SetSelection (event.m_commandInt);
 720   ProcessCommand (event);
 721 }
 722
 723 long wxRadioBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 724 {
 725   if (nMsg == WM_NCHITTEST)
 726     {
 727         int xPos = LOWORD(lParam);  // horizontal position of cursor
 728         int yPos = HIWORD(lParam);  // vertical position of cursor
 729
 730         ScreenToClient(&xPos, &yPos);
 731
 732         // Make sure you can drag by the top of the groupbox, but let
 733         // other (enclosed) controls get mouse events also
 734         if (yPos < 10)
 735             return (long)HTCLIENT;
 736     }
 737
 738   return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 739 }
 740