src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "windowbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/defs.h"
  37     #include "wx/window.h"
  38     #include "wx/control.h"
  39     #include "wx/checkbox.h"
  40     #include "wx/radiobut.h"
  41     #include "wx/textctrl.h"
  42     #include "wx/settings.h"
  43     #include "wx/dialog.h"
  44     #include "wx/msgdlg.h"
  45     #include "wx/statusbr.h"
  46 #endif //WX_PRECOMP
  47
  48 #if wxUSE_CONSTRAINTS
  49     #include "wx/layout.h"
  50     #include "wx/sizer.h"
  51 #endif // wxUSE_CONSTRAINTS
  52
  53 #if wxUSE_DRAG_AND_DROP
  54     #include "wx/dnd.h"
  55 #endif // wxUSE_DRAG_AND_DROP
  56
  57 #if wxUSE_HELP
  58     #include "wx/cshelp.h"
  59 #endif // wxUSE_HELP
  60
  61 #if wxUSE_TOOLTIPS
  62     #include "wx/tooltip.h"
  63 #endif // wxUSE_TOOLTIPS
  64
  65 #if wxUSE_CARET
  66     #include "wx/caret.h"
  67 #endif // wxUSE_CARET
  68
  69 // ----------------------------------------------------------------------------
  70 // static data
  71 // ----------------------------------------------------------------------------
  72
  73 int wxWindowBase::ms_lastControlId = -200;
  74
  75 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  76
  77 // ----------------------------------------------------------------------------
  78 // event table
  79 // ----------------------------------------------------------------------------
  80
  81 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  82     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  83     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  84     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
  85
  86 #if wxUSE_HELP
  87     EVT_HELP(-1, wxWindowBase::OnHelp)
  88 #endif // wxUSE_HELP
  89
  90 END_EVENT_TABLE()
  91
  92 // ============================================================================
  93 // implementation of the common functionality of the wxWindow class
  94 // ============================================================================
  95
  96 // ----------------------------------------------------------------------------
  97 // initialization
  98 // ----------------------------------------------------------------------------
  99
 100 // the default initialization
 101 void wxWindowBase::InitBase()
 102 {
 103     // no window yet, no parent nor children
 104     m_parent = (wxWindow *)NULL;
 105     m_windowId = -1;
 106     m_children.DeleteContents( FALSE ); // don't auto delete node data
 107
 108     // no constraints on the minimal window size
 109     m_minWidth =
 110     m_minHeight =
 111     m_maxWidth =
 112     m_maxHeight = -1;
 113
 114     // window is created enabled but it's not visible yet
 115     m_isShown = FALSE;
 116     m_isEnabled = TRUE;
 117
 118     // the default event handler is just this window
 119     m_eventHandler = this;
 120
 121 #if wxUSE_VALIDATORS
 122     // no validator
 123     m_windowValidator = (wxValidator *) NULL;
 124 #endif // wxUSE_VALIDATORS
 125
 126     // use the system default colours
 127     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_BTNFACE);
 128     m_foregroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOWTEXT);
 129
 130     // don't set the font here for wxMSW as we don't call WM_SETFONT here and
 131     // so the font is *not* really set - but calls to SetFont() later won't do
 132     // anything because m_font appears to be already set!
 133 #ifndef __WXMSW__
 134     m_font = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 135 #endif // __WXMSW__
 136
 137     // the colours/fonts are default for now
 138     m_hasBgCol =
 139     m_hasFgCol =
 140     m_hasFont = FALSE;
 141
 142     // no style bits
 143     m_exStyle =
 144     m_windowStyle = 0;
 145
 146     // an optimization for the event processing: checking this flag is much
 147     // faster than using IsKindOf(CLASSINFO(wxWindow))
 148     m_isWindow = TRUE;
 149
 150 #if wxUSE_CONSTRAINTS
 151     // no constraints whatsoever
 152     m_constraints = (wxLayoutConstraints *) NULL;
 153     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 154     m_windowSizer = (wxSizer *) NULL;
 155     m_autoLayout = FALSE;
 156 #endif // wxUSE_CONSTRAINTS
 157
 158 #if wxUSE_DRAG_AND_DROP
 159     m_dropTarget = (wxDropTarget *)NULL;
 160 #endif // wxUSE_DRAG_AND_DROP
 161
 162 #if wxUSE_TOOLTIPS
 163     m_tooltip = (wxToolTip *)NULL;
 164 #endif // wxUSE_TOOLTIPS
 165
 166 #if wxUSE_CARET
 167     m_caret = (wxCaret *)NULL;
 168 #endif // wxUSE_CARET
 169
 170     // Whether we're using the current theme for this window (wxGTK only for now)
 171     m_themeEnabled = FALSE;
 172 }
 173
 174 // common part of window creation process
 175 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 176                               wxWindowID id,
 177                               const wxPoint& WXUNUSED(pos),
 178                               const wxSize& WXUNUSED(size),
 179                               long style,
 180                               const wxValidator& validator,
 181                               const wxString& name)
 182 {
 183     // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
 184     // member variables - check that it has been called (will catch the case
 185     // when a new ctor is added which doesn't call InitWindow)
 186     wxASSERT_MSG( m_isWindow, wxT("Init() must have been called before!") );
 187
 188     // generate a new id if the user doesn't care about it
 189     m_windowId = id == -1 ? NewControlId() : id;
 190
 191     SetName(name);
 192     SetWindowStyleFlag(style);
 193     SetParent(parent);
 194
 195 #if wxUSE_VALIDATORS
 196     SetValidator(validator);
 197 #endif // wxUSE_VALIDATORS
 198
 199     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 200     // have it too - like this it's possible to set it only in the top level
 201     // dialog/frame and all children will inherit it by defult
 202     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 203     {
 204         SetExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
 205     }
 206
 207     return TRUE;
 208 }
 209
 210 // ----------------------------------------------------------------------------
 211 // destruction
 212 // ----------------------------------------------------------------------------
 213
 214 // common clean up
 215 wxWindowBase::~wxWindowBase()
 216 {
 217     // FIXME if these 2 cases result from programming errors in the user code
 218     //       we should probably assert here instead of silently fixing them
 219
 220     // Just in case the window has been Closed, but we're then deleting
 221     // immediately: don't leave dangling pointers.
 222     wxPendingDelete.DeleteObject(this);
 223
 224     // Just in case we've loaded a top-level window via LoadNativeDialog but
 225     // we weren't a dialog class
 226     wxTopLevelWindows.DeleteObject(this);
 227
 228     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 229
 230 #if wxUSE_CARET
 231     if ( m_caret )
 232         delete m_caret;
 233 #endif // wxUSE_CARET
 234
 235 #if wxUSE_VALIDATORS
 236     if ( m_windowValidator )
 237         delete m_windowValidator;
 238 #endif // wxUSE_VALIDATORS
 239
 240 #if wxUSE_CONSTRAINTS
 241     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 242     // at deleted windows as they delete themselves.
 243     DeleteRelatedConstraints();
 244
 245     if ( m_constraints )
 246     {
 247         // This removes any dangling pointers to this window in other windows'
 248         // constraintsInvolvedIn lists.
 249         UnsetConstraints(m_constraints);
 250         delete m_constraints;
 251         m_constraints = NULL;
 252     }
 253
 254     if ( m_windowSizer )
 255         delete m_windowSizer;
 256
 257 #endif // wxUSE_CONSTRAINTS
 258
 259 #if wxUSE_DRAG_AND_DROP
 260     if ( m_dropTarget )
 261         delete m_dropTarget;
 262 #endif // wxUSE_DRAG_AND_DROP
 263
 264 #if wxUSE_TOOLTIPS
 265     if ( m_tooltip )
 266         delete m_tooltip;
 267 #endif // wxUSE_TOOLTIPS
 268
 269     // reset the dangling pointer our parent window may keep to us
 270     if ( m_parent && m_parent->GetDefaultItem() == this )
 271     {
 272         m_parent->SetDefaultItem(NULL);
 273     }
 274 }
 275
 276 bool wxWindowBase::Destroy()
 277 {
 278     delete this;
 279
 280     return TRUE;
 281 }
 282
 283 bool wxWindowBase::Close(bool force)
 284 {
 285     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 286     event.SetEventObject(this);
 287 #if WXWIN_COMPATIBILITY
 288     event.SetForce(force);
 289 #endif // WXWIN_COMPATIBILITY
 290     event.SetCanVeto(!force);
 291
 292     // return FALSE if window wasn't closed because the application vetoed the
 293     // close event
 294     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 295 }
 296
 297 bool wxWindowBase::DestroyChildren()
 298 {
 299     wxWindowList::Node *node;
 300     for ( ;; )
 301     {
 302         // we iterate until the list becomes empty
 303         node = GetChildren().GetFirst();
 304         if ( !node )
 305             break;
 306
 307         wxWindow *child = node->GetData();
 308
 309         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 310
 311         child->Show(FALSE);
 312         delete child;
 313
 314         wxASSERT_MSG( !GetChildren().Find(child),
 315                       wxT("child didn't remove itself using RemoveChild()") );
 316     }
 317
 318     return TRUE;
 319 }
 320
 321 // ----------------------------------------------------------------------------
 322 // size/position related methods
 323 // ----------------------------------------------------------------------------
 324
 325 // centre the window with respect to its parent in either (or both) directions
 326 void wxWindowBase::Centre(int direction)
 327 {
 328     // the position/size of the parent window or of the entire screen
 329     wxPoint posParent;
 330     int widthParent, heightParent;
 331
 332     wxWindow *parent = NULL;
 333
 334     if ( !(direction & wxCENTRE_ON_SCREEN) )
 335     {
 336         // find the parent to centre this window on: it should be the
 337         // immediate parent for the controls but the top level parent for the
 338         // top level windows (like dialogs)
 339         parent = GetParent();
 340         if ( IsTopLevel() )
 341         {
 342             while ( parent && !parent->IsTopLevel() )
 343             {
 344                 parent = parent->GetParent();
 345             }
 346         }
 347
 348         // did we find the parent?
 349         if ( !parent )
 350         {
 351             // no other choice
 352             direction |= wxCENTRE_ON_SCREEN;
 353         }
 354     }
 355
 356     if ( direction & wxCENTRE_ON_SCREEN )
 357     {
 358         // centre with respect to the whole screen
 359         wxDisplaySize(&widthParent, &heightParent);
 360     }
 361     else
 362     {
 363         if ( IsTopLevel() )
 364         {
 365             // centre on the parent
 366             parent->GetSize(&widthParent, &heightParent);
 367
 368             // adjust to the parents position
 369             posParent = parent->GetPosition();
 370         }
 371         else
 372         {
 373             // centre inside the parents client rectangle
 374             parent->GetClientSize(&widthParent, &heightParent);
 375         }
 376     }
 377
 378     int width, height;
 379     GetSize(&width, &height);
 380
 381     int xNew = -1,
 382         yNew = -1;
 383
 384     if ( direction & wxHORIZONTAL )
 385         xNew = (widthParent - width)/2;
 386
 387     if ( direction & wxVERTICAL )
 388         yNew = (heightParent - height)/2;
 389
 390     xNew += posParent.x;
 391     yNew += posParent.y;
 392
 393     // Base size of the visible dimensions of the display
 394     // to take into account the taskbar
 395     wxRect rect = wxGetClientDisplayRect();
 396     wxSize size (rect.width,rect.height);
 397
 398     if (posParent.x >= 0)  // if parent is on the main display
 399     {
 400         if (xNew < 0)
 401             xNew = 0;
 402         else if (xNew+width > size.x)
 403             xNew = size.x-width-1;
 404     }
 405     if (posParent.y >= 0)  // if parent is on the main display
 406     {
 407         if (yNew+height > size.y)
 408             yNew = size.y-height-1;
 409
 410         // Make certain that the title bar is initially visible
 411         // always, even if this would push the bottom of the
 412         // dialog of the visible area of the display
 413         if (yNew < 0)
 414             yNew = 0;
 415     }
 416
 417     // move the window to this position (keeping the old size but using
 418     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 419     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 420 }
 421
 422 // fits the window around the children
 423 void wxWindowBase::Fit()
 424 {
 425     if ( GetChildren().GetCount() > 0 )
 426     {
 427         wxSize size = DoGetBestSize();
 428
 429         // for compatibility with the old versions and because it really looks
 430         // slightly more pretty like this, add a pad
 431         size.x += 7;
 432         size.y += 14;
 433
 434         SetClientSize(size);
 435     }
 436     //else: do nothing if we have no children
 437 }
 438
 439 // return the size best suited for the current window
 440 wxSize wxWindowBase::DoGetBestSize() const
 441 {
 442     if ( GetChildren().GetCount() > 0 )
 443     {
 444         // our minimal acceptable size is such that all our windows fit inside
 445         int maxX = 0,
 446             maxY = 0;
 447
 448         for ( wxWindowList::Node *node = GetChildren().GetFirst();
 449               node;
 450               node = node->GetNext() )
 451         {
 452             wxWindow *win = node->GetData();
 453             if ( win->IsTopLevel()
 454 #if wxUSE_STATUSBAR
 455                     || wxDynamicCast(win, wxStatusBar)
 456 #endif // wxUSE_STATUSBAR
 457                )
 458             {
 459                 // dialogs and frames lie in different top level windows -
 460                 // don't deal with them here; as for the status bars, they
 461                 // don't lie in the client area at all
 462                 continue;
 463             }
 464
 465             int wx, wy, ww, wh;
 466             win->GetPosition(&wx, &wy);
 467
 468             // if the window hadn't been positioned yet, assume that it is in
 469             // the origin
 470             if ( wx == -1 )
 471                 wx = 0;
 472             if ( wy == -1 )
 473                 wy = 0;
 474
 475             win->GetSize(&ww, &wh);
 476             if ( wx + ww > maxX )
 477                 maxX = wx + ww;
 478             if ( wy + wh > maxY )
 479                 maxY = wy + wh;
 480         }
 481
 482         return wxSize(maxX, maxY);
 483     }
 484     else
 485     {
 486         // for a generic window there is no natural best size - just use the
 487         // current one
 488         return GetSize();
 489     }
 490 }
 491
 492 // by default the origin is not shifted
 493 wxPoint wxWindowBase::GetClientAreaOrigin() const
 494 {
 495     return wxPoint(0, 0);
 496 }
 497
 498 // set the min/max size of the window
 499 void wxWindowBase::SetSizeHints(int minW, int minH,
 500                                 int maxW, int maxH,
 501                                 int WXUNUSED(incW), int WXUNUSED(incH))
 502 {
 503     m_minWidth = minW;
 504     m_maxWidth = maxW;
 505     m_minHeight = minH;
 506     m_maxHeight = maxH;
 507 }
 508
 509 // ----------------------------------------------------------------------------
 510 // show/hide/enable/disable the window
 511 // ----------------------------------------------------------------------------
 512
 513 bool wxWindowBase::Show(bool show)
 514 {
 515     if ( show != m_isShown )
 516     {
 517         m_isShown = show;
 518
 519         return TRUE;
 520     }
 521     else
 522     {
 523         return FALSE;
 524     }
 525 }
 526
 527 bool wxWindowBase::Enable(bool enable)
 528 {
 529     if ( enable != m_isEnabled )
 530     {
 531         m_isEnabled = enable;
 532
 533         return TRUE;
 534     }
 535     else
 536     {
 537         return FALSE;
 538     }
 539 }
 540 // ----------------------------------------------------------------------------
 541 // RTTI
 542 // ----------------------------------------------------------------------------
 543
 544 bool wxWindowBase::IsTopLevel() const
 545 {
 546     return FALSE;
 547 }
 548
 549 // ----------------------------------------------------------------------------
 550 // reparenting the window
 551 // ----------------------------------------------------------------------------
 552
 553 void wxWindowBase::AddChild(wxWindowBase *child)
 554 {
 555     wxCHECK_RET( child, wxT("can't add a NULL child") );
 556
 557     // this should never happen and it will lead to a crash later if it does
 558     // because RemoveChild() will remove only one node from the children list
 559     // and the other(s) one(s) will be left with dangling pointers in them
 560     wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
 561
 562     GetChildren().Append(child);
 563     child->SetParent(this);
 564 }
 565
 566 void wxWindowBase::RemoveChild(wxWindowBase *child)
 567 {
 568     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 569
 570     GetChildren().DeleteObject(child);
 571     child->SetParent((wxWindow *)NULL);
 572 }
 573
 574 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 575 {
 576     wxWindow *oldParent = GetParent();
 577     if ( newParent == oldParent )
 578     {
 579         // nothing done
 580         return FALSE;
 581     }
 582
 583     // unlink this window from the existing parent.
 584     if ( oldParent )
 585     {
 586         oldParent->RemoveChild(this);
 587     }
 588     else
 589     {
 590         wxTopLevelWindows.DeleteObject(this);
 591     }
 592
 593     // add it to the new one
 594     if ( newParent )
 595     {
 596         newParent->AddChild(this);
 597     }
 598     else
 599     {
 600         wxTopLevelWindows.Append(this);
 601     }
 602
 603     return TRUE;
 604 }
 605
 606 // ----------------------------------------------------------------------------
 607 // event handler stuff
 608 // ----------------------------------------------------------------------------
 609
 610 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 611 {
 612     handler->SetNextHandler(GetEventHandler());
 613     SetEventHandler(handler);
 614 }
 615
 616 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 617 {
 618     wxEvtHandler *handlerA = GetEventHandler();
 619     if ( handlerA )
 620     {
 621         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 622         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 623         SetEventHandler(handlerB);
 624         if ( deleteHandler )
 625         {
 626             delete handlerA;
 627             handlerA = (wxEvtHandler *)NULL;
 628         }
 629     }
 630
 631     return handlerA;
 632 }
 633
 634 // ----------------------------------------------------------------------------
 635 // cursors, fonts &c
 636 // ----------------------------------------------------------------------------
 637
 638 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 639 {
 640     if ( !colour.Ok() || (colour == m_backgroundColour) )
 641         return FALSE;
 642
 643     m_backgroundColour = colour;
 644
 645     m_hasBgCol = TRUE;
 646
 647     return TRUE;
 648 }
 649
 650 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 651 {
 652     if ( !colour.Ok() || (colour == m_foregroundColour) )
 653         return FALSE;
 654
 655     m_foregroundColour = colour;
 656
 657     m_hasFgCol = TRUE;
 658
 659     return TRUE;
 660 }
 661
 662 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 663 {
 664     // setting an invalid cursor is ok, it means that we don't have any special
 665     // cursor
 666     if ( m_cursor == cursor )
 667     {
 668         // no change
 669         return FALSE;
 670     }
 671
 672     m_cursor = cursor;
 673
 674     return TRUE;
 675 }
 676
 677 bool wxWindowBase::SetFont(const wxFont& font)
 678 {
 679     // don't try to set invalid font, always fall back to the default
 680     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 681
 682     if ( fontOk == m_font )
 683     {
 684         // no change
 685         return FALSE;
 686     }
 687
 688     m_font = fontOk;
 689
 690     m_hasFont = TRUE;
 691
 692     return TRUE;
 693 }
 694
 695 #if wxUSE_CARET
 696 void wxWindowBase::SetCaret(wxCaret *caret)
 697 {
 698     if ( m_caret )
 699     {
 700         delete m_caret;
 701     }
 702
 703     m_caret = caret;
 704
 705     if ( m_caret )
 706     {
 707         wxASSERT_MSG( m_caret->GetWindow() == this,
 708                       wxT("caret should be created associated to this window") );
 709     }
 710 }
 711 #endif // wxUSE_CARET
 712
 713 #if wxUSE_VALIDATORS
 714 // ----------------------------------------------------------------------------
 715 // validators
 716 // ----------------------------------------------------------------------------
 717
 718 void wxWindowBase::SetValidator(const wxValidator& validator)
 719 {
 720     if ( m_windowValidator )
 721         delete m_windowValidator;
 722
 723     m_windowValidator = (wxValidator *)validator.Clone();
 724
 725     if ( m_windowValidator )
 726         m_windowValidator->SetWindow(this) ;
 727 }
 728 #endif // wxUSE_VALIDATORS
 729
 730 // ----------------------------------------------------------------------------
 731 // update region stuff
 732 // ----------------------------------------------------------------------------
 733
 734 wxRect wxWindowBase::GetUpdateClientRect() const
 735 {
 736     wxRegion rgnUpdate = GetUpdateRegion();
 737     rgnUpdate.Intersect(GetClientRect());
 738     wxRect rectUpdate = rgnUpdate.GetBox();
 739     wxPoint ptOrigin = GetClientAreaOrigin();
 740     rectUpdate.x -= ptOrigin.x;
 741     rectUpdate.y -= ptOrigin.y;
 742
 743     return rectUpdate;
 744 }
 745
 746 bool wxWindowBase::IsExposed(int x, int y) const
 747 {
 748     return m_updateRegion.Contains(x, y) != wxOutRegion;
 749 }
 750
 751 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
 752 {
 753     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
 754 }
 755
 756 // ----------------------------------------------------------------------------
 757 // find window by id or name
 758 // ----------------------------------------------------------------------------
 759
 760 wxWindow *wxWindowBase::FindWindow( long id )
 761 {
 762     if ( id == m_windowId )
 763         return (wxWindow *)this;
 764
 765     wxWindowBase *res = (wxWindow *)NULL;
 766     wxWindowList::Node *node;
 767     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 768     {
 769         wxWindowBase *child = node->GetData();
 770         res = child->FindWindow( id );
 771     }
 772
 773     return (wxWindow *)res;
 774 }
 775
 776 wxWindow *wxWindowBase::FindWindow( const wxString& name )
 777 {
 778     if ( name == m_windowName )
 779         return (wxWindow *)this;
 780
 781     wxWindowBase *res = (wxWindow *)NULL;
 782     wxWindowList::Node *node;
 783     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 784     {
 785         wxWindow *child = node->GetData();
 786         res = child->FindWindow(name);
 787     }
 788
 789     return (wxWindow *)res;
 790 }
 791
 792 // ----------------------------------------------------------------------------
 793 // dialog oriented functions
 794 // ----------------------------------------------------------------------------
 795
 796 void wxWindowBase::MakeModal(bool modal)
 797 {
 798     // Disable all other windows
 799     if ( IsTopLevel() )
 800     {
 801         wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
 802         while (node)
 803         {
 804             wxWindow *win = node->GetData();
 805             if (win != this)
 806                 win->Enable(!modal);
 807
 808             node = node->GetNext();
 809         }
 810     }
 811 }
 812
 813 bool wxWindowBase::Validate()
 814 {
 815 #if wxUSE_VALIDATORS
 816     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 817
 818     wxWindowList::Node *node;
 819     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 820     {
 821         wxWindowBase *child = node->GetData();
 822         wxValidator *validator = child->GetValidator();
 823         if ( validator && !validator->Validate((wxWindow *)this) )
 824         {
 825             return FALSE;
 826         }
 827
 828         if ( recurse && !child->Validate() )
 829         {
 830             return FALSE;
 831         }
 832     }
 833 #endif // wxUSE_VALIDATORS
 834
 835     return TRUE;
 836 }
 837
 838 bool wxWindowBase::TransferDataToWindow()
 839 {
 840 #if wxUSE_VALIDATORS
 841     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 842
 843     wxWindowList::Node *node;
 844     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 845     {
 846         wxWindowBase *child = node->GetData();
 847         wxValidator *validator = child->GetValidator();
 848         if ( validator && !validator->TransferToWindow() )
 849         {
 850             wxLogWarning(_("Could not transfer data to window"));
 851             wxLog::FlushActive();
 852
 853             return FALSE;
 854         }
 855
 856         if ( recurse )
 857         {
 858             if ( !child->TransferDataToWindow() )
 859             {
 860                 // warning already given
 861                 return FALSE;
 862             }
 863         }
 864     }
 865 #endif // wxUSE_VALIDATORS
 866
 867     return TRUE;
 868 }
 869
 870 bool wxWindowBase::TransferDataFromWindow()
 871 {
 872 #if wxUSE_VALIDATORS
 873     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 874
 875     wxWindowList::Node *node;
 876     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 877     {
 878         wxWindow *child = node->GetData();
 879         wxValidator *validator = child->GetValidator();
 880         if ( validator && !validator->TransferFromWindow() )
 881         {
 882             // nop warning here because the application is supposed to give
 883             // one itself - we don't know here what might have gone wrongly
 884
 885             return FALSE;
 886         }
 887
 888         if ( recurse )
 889         {
 890             if ( !child->TransferDataFromWindow() )
 891             {
 892                 // warning already given
 893                 return FALSE;
 894             }
 895         }
 896     }
 897 #endif // wxUSE_VALIDATORS
 898
 899     return TRUE;
 900 }
 901
 902 void wxWindowBase::InitDialog()
 903 {
 904     wxInitDialogEvent event(GetId());
 905     event.SetEventObject( this );
 906     GetEventHandler()->ProcessEvent(event);
 907 }
 908
 909 // ----------------------------------------------------------------------------
 910 // context-sensitive help support
 911 // ----------------------------------------------------------------------------
 912
 913 #if wxUSE_HELP
 914
 915 // associate this help text with this window
 916 void wxWindowBase::SetHelpText(const wxString& text)
 917 {
 918     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 919     if ( helpProvider )
 920     {
 921         helpProvider->AddHelp(this, text);
 922     }
 923 }
 924
 925 // associate this help text with all windows with the same id as this
 926 // one
 927 void wxWindowBase::SetHelpTextForId(const wxString& text)
 928 {
 929     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 930     if ( helpProvider )
 931     {
 932         helpProvider->AddHelp(GetId(), text);
 933     }
 934 }
 935
 936 // get the help string associated with this window (may be empty)
 937 wxString wxWindowBase::GetHelpText() const
 938 {
 939     wxString text;
 940     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 941     if ( helpProvider )
 942     {
 943         text = helpProvider->GetHelp(this);
 944     }
 945
 946     return text;
 947 }
 948
 949 // show help for this window
 950 void wxWindowBase::OnHelp(wxHelpEvent& event)
 951 {
 952     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 953     if ( helpProvider )
 954     {
 955         if ( helpProvider->ShowHelp(this) )
 956         {
 957             // skip the event.Skip() below
 958             return;
 959         }
 960     }
 961
 962     event.Skip();
 963 }
 964
 965 #endif // wxUSE_HELP
 966
 967 // ----------------------------------------------------------------------------
 968 // tooltips
 969 // ----------------------------------------------------------------------------
 970
 971 #if wxUSE_TOOLTIPS
 972
 973 void wxWindowBase::SetToolTip( const wxString &tip )
 974 {
 975     // don't create the new tooltip if we already have one
 976     if ( m_tooltip )
 977     {
 978         m_tooltip->SetTip( tip );
 979     }
 980     else
 981     {
 982         SetToolTip( new wxToolTip( tip ) );
 983     }
 984
 985     // setting empty tooltip text does not remove the tooltip any more - use
 986     // SetToolTip((wxToolTip *)NULL) for this
 987 }
 988
 989 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
 990 {
 991     if ( m_tooltip )
 992         delete m_tooltip;
 993
 994     m_tooltip = tooltip;
 995 }
 996
 997 #endif // wxUSE_TOOLTIPS
 998
 999 // ----------------------------------------------------------------------------
1000 // constraints and sizers
1001 // ----------------------------------------------------------------------------
1002
1003 #if wxUSE_CONSTRAINTS
1004
1005 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1006 {
1007     if ( m_constraints )
1008     {
1009         UnsetConstraints(m_constraints);
1010         delete m_constraints;
1011     }
1012     m_constraints = constraints;
1013     if ( m_constraints )
1014     {
1015         // Make sure other windows know they're part of a 'meaningful relationship'
1016         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1017             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1018         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1019             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1020         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1021             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1022         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1023             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1024         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1025             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1026         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1027             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1028         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1029             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1030         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1031             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1032     }
1033 }
1034
1035 // This removes any dangling pointers to this window in other windows'
1036 // constraintsInvolvedIn lists.
1037 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1038 {
1039     if ( c )
1040     {
1041         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1042             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1043         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1044             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1045         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1046             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1047         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1048             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1049         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1050             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1051         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1052             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1053         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1054             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1055         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1056             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1057     }
1058 }
1059
1060 // Back-pointer to other windows we're involved with, so if we delete this
1061 // window, we must delete any constraints we're involved with.
1062 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1063 {
1064     if ( !m_constraintsInvolvedIn )
1065         m_constraintsInvolvedIn = new wxWindowList;
1066     if ( !m_constraintsInvolvedIn->Find(otherWin) )
1067         m_constraintsInvolvedIn->Append(otherWin);
1068 }
1069
1070 // REMOVE back-pointer to other windows we're involved with.
1071 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1072 {
1073     if ( m_constraintsInvolvedIn )
1074         m_constraintsInvolvedIn->DeleteObject(otherWin);
1075 }
1076
1077 // Reset any constraints that mention this window
1078 void wxWindowBase::DeleteRelatedConstraints()
1079 {
1080     if ( m_constraintsInvolvedIn )
1081     {
1082         wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
1083         while (node)
1084         {
1085             wxWindow *win = node->GetData();
1086             wxLayoutConstraints *constr = win->GetConstraints();
1087
1088             // Reset any constraints involving this window
1089             if ( constr )
1090             {
1091                 constr->left.ResetIfWin(this);
1092                 constr->top.ResetIfWin(this);
1093                 constr->right.ResetIfWin(this);
1094                 constr->bottom.ResetIfWin(this);
1095                 constr->width.ResetIfWin(this);
1096                 constr->height.ResetIfWin(this);
1097                 constr->centreX.ResetIfWin(this);
1098                 constr->centreY.ResetIfWin(this);
1099             }
1100
1101             wxWindowList::Node *next = node->GetNext();
1102             delete node;
1103             node = next;
1104         }
1105
1106         delete m_constraintsInvolvedIn;
1107         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1108     }
1109 }
1110
1111 void wxWindowBase::SetSizer(wxSizer *sizer)
1112 {
1113     if (m_windowSizer) delete m_windowSizer;
1114
1115     m_windowSizer = sizer;
1116 }
1117
1118 bool wxWindowBase::Layout()
1119 {
1120     // If there is a sizer, use it instead of the constraints
1121     if ( GetSizer() )
1122     {
1123         int w, h;
1124         GetClientSize(&w, &h);
1125
1126         GetSizer()->SetDimension( 0, 0, w, h );
1127     }
1128     else
1129     {
1130         wxLayoutConstraints *constr = GetConstraints();
1131         bool wasOk = constr && constr->AreSatisfied();
1132
1133         ResetConstraints();   // Mark all constraints as unevaluated
1134
1135         // if we're a top level panel (i.e. our parent is frame/dialog), our
1136         // own constraints will never be satisfied any more unless we do it
1137         // here
1138         if ( wasOk )
1139         {
1140             int noChanges = 1;
1141             while ( noChanges > 0 )
1142             {
1143                 constr->SatisfyConstraints(this, &noChanges);
1144             }
1145         }
1146
1147         DoPhase(1);           // Layout children
1148         DoPhase(2);           // Layout grand children
1149         SetConstraintSizes(); // Recursively set the real window sizes
1150     }
1151
1152     return TRUE;
1153 }
1154
1155
1156 // Do a phase of evaluating constraints: the default behaviour. wxSizers may
1157 // do a similar thing, but also impose their own 'constraints' and order the
1158 // evaluation differently.
1159 bool wxWindowBase::LayoutPhase1(int *noChanges)
1160 {
1161     wxLayoutConstraints *constr = GetConstraints();
1162     if ( constr )
1163     {
1164         return constr->SatisfyConstraints(this, noChanges);
1165     }
1166     else
1167         return TRUE;
1168 }
1169
1170 bool wxWindowBase::LayoutPhase2(int *noChanges)
1171 {
1172     *noChanges = 0;
1173
1174     // Layout children
1175     DoPhase(1);
1176     DoPhase(2);
1177     return TRUE;
1178 }
1179
1180 // Do a phase of evaluating child constraints
1181 bool wxWindowBase::DoPhase(int phase)
1182 {
1183     int noIterations = 0;
1184     int maxIterations = 500;
1185     int noChanges = 1;
1186     int noFailures = 0;
1187     wxWindowList succeeded;
1188     while ((noChanges > 0) && (noIterations < maxIterations))
1189     {
1190         noChanges = 0;
1191         noFailures = 0;
1192         wxWindowList::Node *node = GetChildren().GetFirst();
1193         while (node)
1194         {
1195             wxWindow *child = node->GetData();
1196             if ( !child->IsTopLevel() )
1197             {
1198                 wxLayoutConstraints *constr = child->GetConstraints();
1199                 if ( constr )
1200                 {
1201                     if ( !succeeded.Find(child) )
1202                     {
1203                         int tempNoChanges = 0;
1204                         bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
1205                         noChanges += tempNoChanges;
1206                         if ( success )
1207                         {
1208                             succeeded.Append(child);
1209                         }
1210                     }
1211                 }
1212             }
1213             node = node->GetNext();
1214         }
1215
1216         noIterations++;
1217     }
1218
1219     return TRUE;
1220 }
1221
1222 void wxWindowBase::ResetConstraints()
1223 {
1224     wxLayoutConstraints *constr = GetConstraints();
1225     if ( constr )
1226     {
1227         constr->left.SetDone(FALSE);
1228         constr->top.SetDone(FALSE);
1229         constr->right.SetDone(FALSE);
1230         constr->bottom.SetDone(FALSE);
1231         constr->width.SetDone(FALSE);
1232         constr->height.SetDone(FALSE);
1233         constr->centreX.SetDone(FALSE);
1234         constr->centreY.SetDone(FALSE);
1235     }
1236
1237     wxWindowList::Node *node = GetChildren().GetFirst();
1238     while (node)
1239     {
1240         wxWindow *win = node->GetData();
1241         if ( !win->IsTopLevel() )
1242             win->ResetConstraints();
1243         node = node->GetNext();
1244     }
1245 }
1246
1247 // Need to distinguish between setting the 'fake' size for windows and sizers,
1248 // and setting the real values.
1249 void wxWindowBase::SetConstraintSizes(bool recurse)
1250 {
1251     wxLayoutConstraints *constr = GetConstraints();
1252     if ( constr && constr->AreSatisfied() )
1253     {
1254         int x = constr->left.GetValue();
1255         int y = constr->top.GetValue();
1256         int w = constr->width.GetValue();
1257         int h = constr->height.GetValue();
1258
1259         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1260              (constr->height.GetRelationship() != wxAsIs) )
1261         {
1262             SetSize(x, y, w, h);
1263         }
1264         else
1265         {
1266             // If we don't want to resize this window, just move it...
1267             Move(x, y);
1268         }
1269     }
1270     else if ( constr )
1271     {
1272         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1273                    GetClassInfo()->GetClassName(),
1274                    GetName().c_str());
1275     }
1276
1277     if ( recurse )
1278     {
1279         wxWindowList::Node *node = GetChildren().GetFirst();
1280         while (node)
1281         {
1282             wxWindow *win = node->GetData();
1283             if ( !win->IsTopLevel() && win->GetConstraints() )
1284                 win->SetConstraintSizes();
1285             node = node->GetNext();
1286         }
1287     }
1288 }
1289
1290 // Only set the size/position of the constraint (if any)
1291 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1292 {
1293     wxLayoutConstraints *constr = GetConstraints();
1294     if ( constr )
1295     {
1296         if ( x != -1 )
1297         {
1298             constr->left.SetValue(x);
1299             constr->left.SetDone(TRUE);
1300         }
1301         if ( y != -1 )
1302         {
1303             constr->top.SetValue(y);
1304             constr->top.SetDone(TRUE);
1305         }
1306         if ( w != -1 )
1307         {
1308             constr->width.SetValue(w);
1309             constr->width.SetDone(TRUE);
1310         }
1311         if ( h != -1 )
1312         {
1313             constr->height.SetValue(h);
1314             constr->height.SetDone(TRUE);
1315         }
1316     }
1317 }
1318
1319 void wxWindowBase::MoveConstraint(int x, int y)
1320 {
1321     wxLayoutConstraints *constr = GetConstraints();
1322     if ( constr )
1323     {
1324         if ( x != -1 )
1325         {
1326             constr->left.SetValue(x);
1327             constr->left.SetDone(TRUE);
1328         }
1329         if ( y != -1 )
1330         {
1331             constr->top.SetValue(y);
1332             constr->top.SetDone(TRUE);
1333         }
1334     }
1335 }
1336
1337 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1338 {
1339     wxLayoutConstraints *constr = GetConstraints();
1340     if ( constr )
1341     {
1342         *w = constr->width.GetValue();
1343         *h = constr->height.GetValue();
1344     }
1345     else
1346         GetSize(w, h);
1347 }
1348
1349 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1350 {
1351     wxLayoutConstraints *constr = GetConstraints();
1352     if ( constr )
1353     {
1354         *w = constr->width.GetValue();
1355         *h = constr->height.GetValue();
1356     }
1357     else
1358         GetClientSize(w, h);
1359 }
1360
1361 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags)
1362 {
1363     // don't do it for the dialogs/frames - they float independently of their
1364     // parent
1365     if ( !IsTopLevel() )
1366     {
1367         wxWindow *parent = GetParent();
1368         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1369         {
1370             wxPoint pt(parent->GetClientAreaOrigin());
1371             x += pt.x;
1372             y += pt.y;
1373         }
1374     }
1375 }
1376
1377
1378 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1379 {
1380     wxLayoutConstraints *constr = GetConstraints();
1381     if ( constr )
1382     {
1383         *x = constr->left.GetValue();
1384         *y = constr->top.GetValue();
1385     }
1386     else
1387         GetPosition(x, y);
1388 }
1389
1390 #endif // wxUSE_CONSTRAINTS
1391
1392 // ----------------------------------------------------------------------------
1393 // do Update UI processing for child controls
1394 // ----------------------------------------------------------------------------
1395
1396 // TODO: should this be implemented for the child window rather
1397 // than the parent? Then you can override it e.g. for wxCheckBox
1398 // to do the Right Thing rather than having to assume a fixed number
1399 // of control classes.
1400 void wxWindowBase::UpdateWindowUI()
1401 {
1402 #if wxUSE_CONTROLS
1403     wxUpdateUIEvent event(GetId());
1404     event.m_eventObject = this;
1405
1406     if ( GetEventHandler()->ProcessEvent(event) )
1407     {
1408         if ( event.GetSetEnabled() )
1409             Enable(event.GetEnabled());
1410
1411         if ( event.GetSetText() )
1412         {
1413             wxControl *control = wxDynamicCastThis(wxControl);
1414             if ( control )
1415             {
1416 #if wxUSE_TEXTCTRL
1417                 wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
1418                 if ( text )
1419                     text->SetValue(event.GetText());
1420                 else
1421 #endif // wxUSE_TEXTCTRL
1422                     control->SetLabel(event.GetText());
1423             }
1424         }
1425
1426 #if wxUSE_CHECKBOX
1427         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1428         if ( checkbox )
1429         {
1430             if ( event.GetSetChecked() )
1431                 checkbox->SetValue(event.GetChecked());
1432         }
1433 #endif // wxUSE_CHECKBOX
1434
1435 #if wxUSE_RADIOBTN
1436         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1437         if ( radiobtn )
1438         {
1439             if ( event.GetSetChecked() )
1440                 radiobtn->SetValue(event.GetChecked());
1441         }
1442 #endif // wxUSE_RADIOBTN
1443     }
1444 #endif // wxUSE_CONTROLS
1445 }
1446
1447 // ----------------------------------------------------------------------------
1448 // dialog units translations
1449 // ----------------------------------------------------------------------------
1450
1451 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1452 {
1453     int charWidth = GetCharWidth();
1454     int charHeight = GetCharHeight();
1455     wxPoint pt2(-1, -1);
1456     if (pt.x != -1)
1457         pt2.x = (int) ((pt.x * 4) / charWidth) ;
1458     if (pt.y != -1)
1459         pt2.y = (int) ((pt.y * 8) / charHeight) ;
1460
1461     return pt2;
1462 }
1463
1464 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1465 {
1466     int charWidth = GetCharWidth();
1467     int charHeight = GetCharHeight();
1468     wxPoint pt2(-1, -1);
1469     if (pt.x != -1)
1470         pt2.x = (int) ((pt.x * charWidth) / 4) ;
1471     if (pt.y != -1)
1472         pt2.y = (int) ((pt.y * charHeight) / 8) ;
1473
1474     return pt2;
1475 }
1476
1477 // ----------------------------------------------------------------------------
1478 // event handlers
1479 // ----------------------------------------------------------------------------
1480
1481 // propagate the colour change event to the subwindows
1482 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1483 {
1484     wxWindowList::Node *node = GetChildren().GetFirst();
1485     while ( node )
1486     {
1487         // Only propagate to non-top-level windows
1488         wxWindow *win = node->GetData();
1489         if ( !win->IsTopLevel() )
1490         {
1491             wxSysColourChangedEvent event2;
1492             event.m_eventObject = win;
1493             win->GetEventHandler()->ProcessEvent(event2);
1494         }
1495
1496         node = node->GetNext();
1497     }
1498 }
1499
1500 // the default action is to populate dialog with data when it's created
1501 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1502 {
1503     TransferDataToWindow();
1504 }
1505
1506 // process Ctrl-Alt-mclick
1507 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1508 {
1509 #if wxUSE_MSGDLG
1510     if ( event.ControlDown() && event.AltDown() )
1511     {
1512         // don't translate these strings
1513         wxString port;
1514         switch ( wxGetOsVersion() )
1515         {
1516             case wxMOTIF_X:     port = _T("Motif"); break;
1517             case wxMAC:
1518             case wxMAC_DARWIN:  port = _T("Mac"); break;
1519             case wxBEOS:        port = _T("BeOS"); break;
1520             case wxGTK:
1521             case wxGTK_WIN32:
1522             case wxGTK_OS2:
1523             case wxGTK_BEOS:    port = _T("GTK"); break;
1524             case wxWINDOWS:
1525             case wxPENWINDOWS:
1526             case wxWINDOWS_NT:
1527             case wxWIN32S:
1528             case wxWIN95:
1529             case wxWIN386:      port = _T("MS Windows"); break;
1530             case wxMGL_UNIX:
1531             case wxMGL_X:
1532             case wxMGL_WIN32:
1533             case wxMGL_OS2:     port = _T("MGL"); break;
1534             case wxWINDOWS_OS2:
1535             case wxOS2_PM:      port = _T("OS/2"); break;
1536             default:            port = _T("unknown"); break;
1537         }
1538
1539         wxMessageBox(wxString::Format(
1540                                       _T(
1541                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2001 wxWindows team"
1542                                         ),
1543                                       port.c_str(),
1544                                       wxMAJOR_VERSION,
1545                                       wxMINOR_VERSION,
1546                                       wxRELEASE_NUMBER,
1547 #if wxUSE_UNICODE
1548                                       L" (Unicode)",
1549 #else
1550                                       "",
1551 #endif
1552                                       __TDATE__,
1553                                       __TTIME__
1554                                      ),
1555                      _T("wxWindows information"),
1556                      wxICON_INFORMATION | wxOK,
1557                      (wxWindow *)this);
1558     }
1559     else
1560 #endif // wxUSE_MSGDLG
1561     {
1562         event.Skip();
1563     }
1564 }
1565
1566 // ----------------------------------------------------------------------------
1567 // list classes implementation
1568 // ----------------------------------------------------------------------------
1569
1570 void wxWindowListNode::DeleteData()
1571 {
1572     delete (wxWindow *)GetData();
1573 }
1574
1575 // ----------------------------------------------------------------------------
1576 // borders
1577 // ----------------------------------------------------------------------------
1578
1579 wxBorder wxWindowBase::GetBorder() const
1580 {
1581     wxBorder border = (wxBorder)(m_windowStyle & wxBORDER_MASK);
1582     if ( border == wxBORDER_DEFAULT )
1583     {
1584         border = GetDefaultBorder();
1585     }
1586
1587     return border;
1588 }
1589
1590 wxBorder wxWindowBase::GetDefaultBorder() const
1591 {
1592     return wxBORDER_NONE;
1593 }
1594
1595 // ----------------------------------------------------------------------------
1596 // hit testing
1597 // ----------------------------------------------------------------------------
1598
1599 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
1600 {
1601     // here we just check if the point is inside the window or not
1602
1603     // check the top and left border first
1604     bool outside = x < 0 || y < 0;
1605     if ( !outside )
1606     {
1607         // check the right and bottom borders too
1608         wxSize size = GetSize();
1609         outside = x >= size.x || y >= size.y;
1610     }
1611
1612     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
1613 }
1614