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 /*
 129   if ( want3D || wxStyleHasBorder(m_windowStyle) )
 130     msStyle |= WS_BORDER;
 131 */
 132
 133
 134   HWND the_handle = (HWND) parent->GetHWND() ;
 135
 136   m_hWnd = (WXHWND)::CreateWindowEx
 137                      (
 138                       (DWORD)exStyle,
 139                       GROUP_CLASS,
 140                       title,
 141                       msStyle,
 142                       0, 0, 0, 0,
 143                       the_handle,
 144                       (HMENU)m_windowId,
 145                       wxGetInstance(),
 146                       NULL
 147                      );
 148
 149 #if CTL3D
 150   if (want3D)
 151   {
 152     Ctl3dSubclassCtl((HWND)m_hWnd);
 153     m_useCtl3D = TRUE;
 154   }
 155 #endif
 156
 157   SetFont(* parent->GetFont());
 158
 159   SubclassWin((WXHWND)m_hWnd);
 160
 161   // Some radio boxes test consecutive id.
 162   (void)NewControlId() ;
 163   m_radioButtons = new WXHWND[n];
 164   m_radioWidth = new int[n] ;
 165   m_radioHeight = new int[n] ;
 166   int i;
 167   for (i = 0; i < n; i++)
 168   {
 169     m_radioWidth[i] = m_radioHeight[i] = -1 ;
 170     long groupStyle = 0;
 171     if (i == 0 && style==0)
 172       groupStyle = WS_GROUP;
 173     long newId = NewControlId();
 174     long msStyle = groupStyle | RADIO_FLAGS;
 175
 176     m_radioButtons[i] = (WXHWND) CreateWindowEx(exStyle, RADIO_CLASS, choices[i],
 177                           msStyle,0,0,0,0,
 178                           the_handle, (HMENU)newId, wxGetInstance(), NULL);
 179 #if CTL3D
 180   if (want3D)
 181   {
 182     Ctl3dSubclassCtl((HWND) m_hWnd);
 183    m_useCtl3D = TRUE;
 184   }
 185 #endif
 186     if (GetFont())
 187     {
 188        SendMessage((HWND)m_radioButtons[i],WM_SETFONT,
 189                     (WPARAM)GetFont()->GetResourceHandle(),0L);
 190     }
 191     m_subControls.Append((wxObject *)newId);
 192   }
 193
 194   // Create a dummy radio control to end the group.
 195   (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP|RADIO_FLAGS, 0,0,0,0, the_handle, (HMENU)NewControlId(), wxGetInstance(), NULL);
 196
 197   SetSelection(0);
 198
 199   SetSize(x, y, width, height);
 200
 201   return TRUE;
 202 }
 203
 204 #if 0
 205 bool wxRadioBox::Create(wxWindow *parent, wxWindowID id, const wxString& title,
 206              const wxPoint& pos, const wxSize& size,
 207              int n, const wxBitmap *choices[],
 208              int majorDim, long style,
 209              const wxValidator& val, const wxString& name)
 210 {
 211   m_selectedButton = -1;
 212   m_noRowsOrCols = 0;
 213   m_noItems = n;
 214
 215   SetName(name);
 216   SetValidator(val);
 217
 218   parent->AddChild(this);
 219   m_backgroundColour = parent->GetBackgroundColour() ;
 220   m_foregroundColour = parent->GetForegroundColour() ;
 221
 222   m_windowStyle = (long&)style;
 223
 224   int x = pos.x;
 225   int y = pos.y;
 226   int width = size.x;
 227   int height = size.y;
 228
 229   if (id == -1)
 230     m_windowId = NewControlId();
 231   else
 232     m_windowId = id;
 233
 234
 235   m_noRowsOrCols = majorDim;
 236   if (majorDim==0)
 237     m_majorDim = n ;
 238   m_majorDim = majorDim ;
 239   HWND the_handle ;
 240
 241   long msStyle = GROUP_FLAGS;
 242
 243   bool want3D;
 244   WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
 245   // Even with extended styles, need to combine with WS_BORDER
 246   // for them to look right.
 247   if ( want3D || wxStyleHasBorder(m_windowStyle) )
 248     msStyle |= WS_BORDER;
 249
 250   m_hWnd = (WXHWND) CreateWindowEx((DWORD) exStyle, GROUP_CLASS, (title == "" ? NULL : (const char *)title),
 251                            msStyle,
 252                            0,0,0,0,
 253                            (HWND) parent->GetHWND(), (HMENU) m_windowId, wxGetInstance(), NULL) ;
 254
 255   the_handle = (HWND) parent->GetHWND();
 256
 257 #if CTL3D
 258   if (want3D)
 259   {
 260     Ctl3dSubclassCtl((HWND) m_hWnd);
 261    m_useCtl3D = TRUE;
 262   }
 263 #endif
 264
 265   SetFont(* parent->GetFont());
 266
 267   // Subclass again for purposes of dialog editing mode
 268   SubclassWin((WXHWND)m_hWnd);
 269
 270   (void)NewControlId() ;
 271   m_radioButtons = new WXHWND[n];
 272   m_radioWidth = new int[n] ;
 273   m_radioHeight = new int[n] ;
 274
 275   int i;
 276   for (i = 0; i < n; i++)
 277   {
 278     long groupStyle = 0;
 279     if (i == 0 && style==0)
 280       groupStyle = WS_GROUP;
 281     long newId = NewControlId();
 282     m_radioWidth[i]  = ((wxBitmap *)choices[i])->GetWidth();
 283     m_radioHeight[i] = ((wxBitmap *)choices[i])->GetHeight();
 284     char tmp[32] ;
 285     sprintf(tmp,"Toggle%d",i) ;
 286     long msStyle = groupStyle | RADIO_FLAGS;
 287     m_radioButtons[i] = (WXHWND) CreateWindowEx(exStyle, RADIO_CLASS, tmp,
 288                           msStyle,0,0,0,0,
 289                           the_handle, (HMENU)newId, wxhInstance, NULL);
 290 #if CTL3D
 291   if (want3D)
 292   {
 293     Ctl3dSubclassCtl((HWND) m_hWnd);
 294    m_useCtl3D = TRUE;
 295   }
 296 #endif
 297     m_subControls.Append((wxObject *)newId);
 298   }
 299   // Create a dummy radio control to end the group.
 300   (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP|RADIO_FLAGS, 0,0,0,0, the_handle, (HMENU)NewControlId(), wxGetInstance(), NULL);
 301
 302   SetSelection(0);
 303
 304   SetSize(x, y, width, height);
 305
 306   return TRUE;
 307 }
 308 #endif
 309
 310 wxRadioBox::~wxRadioBox(void)
 311 {
 312   m_isBeingDeleted = TRUE;
 313
 314   if (m_radioButtons)
 315   {
 316     int i;
 317     for (i = 0; i < m_noItems; i++)
 318       DestroyWindow((HWND) m_radioButtons[i]);
 319     delete[] m_radioButtons;
 320   }
 321   if (m_radioWidth)
 322     delete[] m_radioWidth ;
 323   if (m_radioHeight)
 324     delete[] m_radioHeight ;
 325   if (m_hWnd)
 326     ::DestroyWindow((HWND) m_hWnd) ;
 327   m_hWnd = 0 ;
 328
 329 }
 330
 331 wxString wxRadioBox::GetLabel(int item) const
 332 {
 333   GetWindowText((HWND)m_radioButtons[item], wxBuffer, 300);
 334   return wxString(wxBuffer);
 335 }
 336
 337 void wxRadioBox::SetLabel(int item, const wxString& label)
 338 {
 339   m_radioWidth[item] = m_radioHeight[item] = -1 ;
 340   SetWindowText((HWND)m_radioButtons[item], (const char *)label);
 341 }
 342
 343 void wxRadioBox::SetLabel(int item, wxBitmap *bitmap)
 344 {
 345 /*
 346     m_radioWidth[item] = bitmap->GetWidth() + FB_MARGIN ;
 347     m_radioHeight[item] = bitmap->GetHeight() + FB_MARGIN ;
 348 */
 349 }
 350
 351 int wxRadioBox::FindString(const wxString& s) const
 352 {
 353  int i;
 354  for (i = 0; i < m_noItems; i++)
 355  {
 356   GetWindowText((HWND) m_radioButtons[i], wxBuffer, 1000);
 357   if (s == wxBuffer)
 358     return i;
 359  }
 360  return -1;
 361 }
 362
 363 void wxRadioBox::SetSelection(int N)
 364 {
 365   if ((N < 0) || (N >= m_noItems))
 366     return;
 367
 368 // Following necessary for Win32s, because Win32s translate BM_SETCHECK
 369   if (m_selectedButton >= 0 && m_selectedButton < m_noItems)
 370     SendMessage((HWND) m_radioButtons[m_selectedButton], BM_SETCHECK, 0, 0L);
 371
 372   SendMessage((HWND) m_radioButtons[N], BM_SETCHECK, 1, 0L);
 373   m_selectedButton = N;
 374 }
 375
 376 // Get single selection, for single choice list items
 377 int wxRadioBox::GetSelection(void) const
 378 {
 379   return m_selectedButton;
 380 }
 381
 382 // Find string for position
 383 wxString wxRadioBox::GetString(int N) const
 384 {
 385   GetWindowText((HWND) m_radioButtons[N], wxBuffer, 1000);
 386   return wxString(wxBuffer);
 387 }
 388
 389 void wxRadioBox::SetSize(int x, int y, int width, int height, int sizeFlags)
 390 {
 391   int currentX, currentY;
 392   GetPosition(&currentX, &currentY);
 393   int xx = x;
 394   int yy = y;
 395
 396   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 397     xx = currentX;
 398   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 399     yy = currentY;
 400
 401   AdjustForParentClientOrigin(xx, yy, sizeFlags);
 402
 403   char buf[400];
 404
 405   int y_offset = yy;
 406   int x_offset = xx;
 407   int current_width, cyf;
 408
 409   int cx1,cy1 ;
 410   wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
 411   // Attempt to have a look coherent with other platforms:
 412   // We compute the biggest toggle dim, then we align all
 413   // items according this value.
 414   int maxWidth =  -1;
 415   int maxHeight = -1 ;
 416
 417   int i;
 418   for (i = 0 ; i < m_noItems; i++)
 419   {
 420     int eachWidth;
 421     int eachHeight ;
 422     if (m_radioWidth[i]<0)
 423     {
 424       // It's a labelled toggle
 425       GetWindowText((HWND) m_radioButtons[i], buf, 300);
 426       GetTextExtent(buf, &current_width, &cyf,NULL,NULL, GetFont());
 427       eachWidth = (int)(current_width + RADIO_SIZE);
 428       eachHeight = (int)((3*cyf)/2);
 429     }
 430     else
 431     {
 432       eachWidth = m_radioWidth[i] ;
 433       eachHeight = m_radioHeight[i] ;
 434     }
 435     if (maxWidth<eachWidth) maxWidth = eachWidth ;
 436     if (maxHeight<eachHeight) maxHeight = eachHeight ;
 437   }
 438
 439   if (m_hWnd)
 440   {
 441     int totWidth ;
 442     int totHeight;
 443
 444     int nbHor,nbVer;
 445
 446     if (m_windowStyle & wxRA_VERTICAL)
 447     {
 448       nbVer = m_majorDim ;
 449       nbHor = (m_noItems+m_majorDim-1)/m_majorDim ;
 450     }
 451     else
 452     {
 453       nbHor = m_majorDim ;
 454       nbVer = (m_noItems+m_majorDim-1)/m_majorDim ;
 455     }
 456
 457     // this formula works, but I don't know why.
 458     // Please, be sure what you do if you modify it!!
 459     if (m_radioWidth[0]<0)
 460       totHeight = (nbVer * maxHeight) + cy1/2 ;
 461     else
 462       totHeight = nbVer * (maxHeight+cy1/2) ;
 463     totWidth  = nbHor * (maxWidth+cx1) ;
 464
 465 #if (!CTL3D)
 466     // Requires a bigger group box in plain Windows
 467     MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+(3*cy1)/2,TRUE) ;
 468 #else
 469     MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+cy1,TRUE) ;
 470 #endif
 471     x_offset += cx1;
 472     y_offset += cy1;
 473   }
 474
 475 #if (!CTL3D)
 476   y_offset += (int)(cy1/2); // Fudge factor since buttons overlapped label
 477                             // JACS 2/12/93. CTL3D draws group label quite high.
 478 #endif
 479   int startX = x_offset ;
 480   int startY = y_offset ;
 481
 482   for ( i = 0 ; i < m_noItems; i++)
 483   {
 484     // Bidimensional radio adjustment
 485     if (i&&((i%m_majorDim)==0)) // Why is this omitted for i = 0?
 486     {
 487       if (m_windowStyle & wxRA_VERTICAL)
 488       {
 489         y_offset = startY;
 490         x_offset += maxWidth + cx1 ;
 491       }
 492       else
 493       {
 494         x_offset = startX ;
 495         y_offset += maxHeight ;
 496         if (m_radioWidth[0]>0)
 497           y_offset += cy1/2 ;
 498       }
 499     }
 500     int eachWidth ;
 501     int eachHeight ;
 502     if (m_radioWidth[i]<0)
 503     {
 504       // It's a labeled item
 505       GetWindowText((HWND) m_radioButtons[i], buf, 300);
 506       GetTextExtent(buf, &current_width, &cyf,NULL,NULL,GetFont());
 507
 508       // How do we find out radio button bitmap size!!
 509       // By adjusting them carefully, manually :-)
 510       eachWidth = (int)(current_width + RADIO_SIZE);
 511       eachHeight = (int)((3*cyf)/2);
 512     }
 513     else
 514     {
 515       eachWidth = m_radioWidth[i] ;
 516       eachHeight = m_radioHeight[i] ;
 517     }
 518
 519     MoveWindow((HWND) m_radioButtons[i],x_offset,y_offset,eachWidth,eachHeight,TRUE);
 520     if (m_windowStyle & wxRA_VERTICAL)
 521     {
 522       y_offset += maxHeight;
 523       if (m_radioWidth[0]>0)
 524         y_offset += cy1/2 ;
 525     }
 526     else
 527       x_offset += maxWidth + cx1;
 528   }
 529 }
 530
 531 void wxRadioBox::GetSize(int *width, int *height) const
 532 {
 533   RECT rect;
 534   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 535
 536   if (m_hWnd)
 537     wxFindMaxSize(m_hWnd, &rect);
 538
 539   int i;
 540   for (i = 0; i < m_noItems; i++)
 541     wxFindMaxSize(m_radioButtons[i], &rect);
 542
 543   *width = rect.right - rect.left;
 544   *height = rect.bottom - rect.top;
 545 }
 546
 547 void wxRadioBox::GetPosition(int *x, int *y) const
 548 {
 549   wxWindow *parent = GetParent();
 550   RECT rect;
 551   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 552
 553   int i;
 554   for (i = 0; i < m_noItems; i++)
 555     wxFindMaxSize(m_radioButtons[i], &rect);
 556
 557   if (m_hWnd)
 558     wxFindMaxSize(m_hWnd, &rect);
 559
 560   // Since we now have the absolute screen coords,
 561   // if there's a parent we must subtract its top left corner
 562   POINT point;
 563   point.x = rect.left;
 564   point.y = rect.top;
 565   if (parent)
 566   {
 567     ::ScreenToClient((HWND) parent->GetHWND(), &point);
 568   }
 569   // We may be faking the client origin.
 570   // So a window that's really at (0, 30) may appear
 571   // (to wxWin apps) to be at (0, 0).
 572   if (GetParent())
 573   {
 574     wxPoint pt(GetParent()->GetClientAreaOrigin());
 575     point.x -= pt.x;
 576     point.y -= pt.y;
 577   }
 578
 579   *x = point.x;
 580   *y = point.y;
 581 }
 582
 583 wxString wxRadioBox::GetLabel(void) const
 584 {
 585   if (m_hWnd)
 586   {
 587     GetWindowText((HWND) m_hWnd, wxBuffer, 300);
 588     return wxString(wxBuffer);
 589   }
 590   else return wxString("");
 591 }
 592
 593 void wxRadioBox::SetLabel(const wxString& label)
 594 {
 595   if (m_hWnd && label)
 596     SetWindowText((HWND) m_hWnd, label);
 597 }
 598
 599 void wxRadioBox::SetFocus(void)
 600 {
 601   if (m_noItems > 0)
 602   {
 603     if (m_selectedButton == -1)
 604       ::SetFocus((HWND) m_radioButtons[0]);
 605     else
 606       ::SetFocus((HWND) m_radioButtons[m_selectedButton]);
 607   }
 608
 609 }
 610
 611 bool wxRadioBox::Show(bool show)
 612 {
 613   int cshow;
 614   if (show)
 615     cshow = SW_SHOW;
 616   else
 617     cshow = SW_HIDE;
 618   if (m_hWnd)
 619     ShowWindow((HWND) m_hWnd, cshow);
 620   int i;
 621   for (i = 0; i < m_noItems; i++)
 622     ShowWindow((HWND) m_radioButtons[i], cshow);
 623   return TRUE;
 624 }
 625
 626 // Enable a specific button
 627 void wxRadioBox::Enable(int item, bool enable)
 628 {
 629   if (item<0)
 630     wxWindow::Enable(enable) ;
 631   else if (item < m_noItems)
 632     ::EnableWindow((HWND) m_radioButtons[item], enable);
 633 }
 634
 635 // Enable all controls
 636 void wxRadioBox::Enable(bool enable)
 637 {
 638   wxControl::Enable(enable);
 639
 640   int i;
 641   for (i = 0; i < m_noItems; i++)
 642     ::EnableWindow((HWND) m_radioButtons[i], enable);
 643 }
 644
 645 // Show a specific button
 646 void wxRadioBox::Show(int item, bool show)
 647 {
 648   if (item<0)
 649     wxRadioBox::Show(show) ;
 650   else if (item < m_noItems)
 651   {
 652     int cshow;
 653     if (show)
 654       cshow = SW_SHOW;
 655     else
 656       cshow = SW_HIDE;
 657     ShowWindow((HWND) m_radioButtons[item], cshow);
 658   }
 659 }
 660
 661 WXHBRUSH wxRadioBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 662       WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 663 {
 664 #if CTL3D
 665   if ( m_useCtl3D )
 666   {
 667     HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 668     return (WXHBRUSH) hbrush;
 669   }
 670 #endif
 671
 672   if (GetParent()->GetTransparentBackground())
 673     SetBkMode((HDC) pDC, TRANSPARENT);
 674   else
 675     SetBkMode((HDC) pDC, OPAQUE);
 676
 677   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 678   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 679
 680   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 681
 682   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 683   // has a zero usage count.
 684 //  backgroundBrush->RealizeResource();
 685   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 686 }
 687
 688 // For single selection items only
 689 wxString wxRadioBox::GetStringSelection (void) const
 690 {
 691   int sel = GetSelection ();
 692   if (sel > -1)
 693     return this->GetString (sel);
 694   else
 695     return wxString("");
 696 }
 697
 698 bool wxRadioBox::SetStringSelection (const wxString& s)
 699 {
 700   int sel = FindString (s);
 701   if (sel > -1)
 702     {
 703       SetSelection (sel);
 704       return TRUE;
 705     }
 706   else
 707     return FALSE;
 708 }
 709
 710 bool wxRadioBox::ContainsHWND(WXHWND hWnd) const
 711 {
 712   int i;
 713     for (i = 0; i < Number(); i++)
 714        if (GetRadioButtons()[i] == hWnd)
 715           return TRUE;
 716   return FALSE;
 717 }
 718
 719 void wxRadioBox::Command (wxCommandEvent & event)
 720 {
 721   SetSelection (event.m_commandInt);
 722   ProcessCommand (event);
 723 }
 724
 725 long wxRadioBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 726 {
 727   if (nMsg == WM_NCHITTEST)
 728     {
 729         int xPos = LOWORD(lParam);  // horizontal position of cursor
 730         int yPos = HIWORD(lParam);  // vertical position of cursor
 731
 732         ScreenToClient(&xPos, &yPos);
 733
 734         // Make sure you can drag by the top of the groupbox, but let
 735         // other (enclosed) controls get mouse events also
 736         if (yPos < 10)
 737             return (long)HTCLIENT;
 738     }
 739
 740   return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 741 }
 742