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