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 #endif // wxUSE_CONSTRAINTS
  51
  52 #include "wx/sizer.h"
  53
  54 #if wxUSE_DRAG_AND_DROP
  55     #include "wx/dnd.h"
  56 #endif // wxUSE_DRAG_AND_DROP
  57
  58 #if wxUSE_HELP
  59     #include "wx/cshelp.h"
  60 #endif // wxUSE_HELP
  61
  62 #if wxUSE_TOOLTIPS
  63     #include "wx/tooltip.h"
  64 #endif // wxUSE_TOOLTIPS
  65
  66 #if wxUSE_CARET
  67     #include "wx/caret.h"
  68 #endif // wxUSE_CARET
  69
  70 // ----------------------------------------------------------------------------
  71 // static data
  72 // ----------------------------------------------------------------------------
  73
  74 int wxWindowBase::ms_lastControlId = -200;
  75
  76 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  77
  78 // ----------------------------------------------------------------------------
  79 // event table
  80 // ----------------------------------------------------------------------------
  81
  82 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  83     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  84     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  85     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
  86
  87 #if wxUSE_HELP
  88     EVT_HELP(-1, wxWindowBase::OnHelp)
  89 #endif // wxUSE_HELP
  90
  91 END_EVENT_TABLE()
  92
  93 // ============================================================================
  94 // implementation of the common functionality of the wxWindow class
  95 // ============================================================================
  96
  97 // ----------------------------------------------------------------------------
  98 // initialization
  99 // ----------------------------------------------------------------------------
 100
 101 // the default initialization
 102 void wxWindowBase::InitBase()
 103 {
 104     // no window yet, no parent nor children
 105     m_parent = (wxWindow *)NULL;
 106     m_windowId = -1;
 107     m_children.DeleteContents( FALSE ); // don't auto delete node data
 108
 109     // no constraints on the minimal window size
 110     m_minWidth =
 111     m_minHeight =
 112     m_maxWidth =
 113     m_maxHeight = -1;
 114
 115     // window is created enabled but it's not visible yet
 116     m_isShown = FALSE;
 117     m_isEnabled = TRUE;
 118
 119     // the default event handler is just this window
 120     m_eventHandler = this;
 121
 122 #if wxUSE_VALIDATORS
 123     // no validator
 124     m_windowValidator = (wxValidator *) NULL;
 125 #endif // wxUSE_VALIDATORS
 126
 127     // use the system default colours
 128     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 129     m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 130
 131     // don't set the font here for wxMSW as we don't call WM_SETFONT here and
 132     // so the font is *not* really set - but calls to SetFont() later won't do
 133     // anything because m_font appears to be already set!
 134 #ifndef __WXMSW__
 135     m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 136 #endif // __WXMSW__
 137
 138     // the colours/fonts are default for now
 139     m_hasBgCol =
 140     m_hasFgCol =
 141     m_hasFont = FALSE;
 142
 143     // no style bits
 144     m_exStyle =
 145     m_windowStyle = 0;
 146
 147     // an optimization for the event processing: checking this flag is much
 148     // faster than using IsKindOf(CLASSINFO(wxWindow))
 149     m_isWindow = TRUE;
 150
 151 #if wxUSE_CONSTRAINTS
 152     // no constraints whatsoever
 153     m_constraints = (wxLayoutConstraints *) NULL;
 154     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 155 #endif // wxUSE_CONSTRAINTS
 156
 157     m_windowSizer = (wxSizer *) NULL;
 158     m_containingSizer = (wxSizer *) NULL;
 159     m_autoLayout = FALSE;
 160
 161 #if wxUSE_DRAG_AND_DROP
 162     m_dropTarget = (wxDropTarget *)NULL;
 163 #endif // wxUSE_DRAG_AND_DROP
 164
 165 #if wxUSE_TOOLTIPS
 166     m_tooltip = (wxToolTip *)NULL;
 167 #endif // wxUSE_TOOLTIPS
 168
 169 #if wxUSE_CARET
 170     m_caret = (wxCaret *)NULL;
 171 #endif // wxUSE_CARET
 172
 173 #if wxUSE_PALETTE
 174     m_hasCustomPalette = FALSE;
 175 #endif // wxUSE_PALETTE
 176
 177     // Whether we're using the current theme for this window (wxGTK only for now)
 178     m_themeEnabled = FALSE;
 179 }
 180
 181 // common part of window creation process
 182 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 183                               wxWindowID id,
 184                               const wxPoint& WXUNUSED(pos),
 185                               const wxSize& WXUNUSED(size),
 186                               long style,
 187                               const wxValidator& validator,
 188                               const wxString& name)
 189 {
 190     // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
 191     // member variables - check that it has been called (will catch the case
 192     // when a new ctor is added which doesn't call InitWindow)
 193     wxASSERT_MSG( m_isWindow, wxT("Init() must have been called before!") );
 194
 195     // generate a new id if the user doesn't care about it
 196     m_windowId = id == -1 ? NewControlId() : id;
 197
 198     SetName(name);
 199     SetWindowStyleFlag(style);
 200     SetParent(parent);
 201
 202 #if wxUSE_VALIDATORS
 203     SetValidator(validator);
 204 #endif // wxUSE_VALIDATORS
 205
 206     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 207     // have it too - like this it's possible to set it only in the top level
 208     // dialog/frame and all children will inherit it by defult
 209     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 210     {
 211         SetExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
 212     }
 213
 214     return TRUE;
 215 }
 216
 217 // ----------------------------------------------------------------------------
 218 // destruction
 219 // ----------------------------------------------------------------------------
 220
 221 // common clean up
 222 wxWindowBase::~wxWindowBase()
 223 {
 224     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 225
 226     // FIXME if these 2 cases result from programming errors in the user code
 227     //       we should probably assert here instead of silently fixing them
 228
 229     // Just in case the window has been Closed, but we're then deleting
 230     // immediately: don't leave dangling pointers.
 231     wxPendingDelete.DeleteObject(this);
 232
 233     // Just in case we've loaded a top-level window via LoadNativeDialog but
 234     // we weren't a dialog class
 235     wxTopLevelWindows.DeleteObject(this);
 236
 237     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 238
 239 #if wxUSE_CARET
 240     if ( m_caret )
 241         delete m_caret;
 242 #endif // wxUSE_CARET
 243
 244 #if wxUSE_VALIDATORS
 245     if ( m_windowValidator )
 246         delete m_windowValidator;
 247 #endif // wxUSE_VALIDATORS
 248
 249 #if wxUSE_CONSTRAINTS
 250     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 251     // at deleted windows as they delete themselves.
 252     DeleteRelatedConstraints();
 253
 254     if ( m_constraints )
 255     {
 256         // This removes any dangling pointers to this window in other windows'
 257         // constraintsInvolvedIn lists.
 258         UnsetConstraints(m_constraints);
 259         delete m_constraints;
 260         m_constraints = NULL;
 261     }
 262
 263 #endif // wxUSE_CONSTRAINTS
 264
 265     if ( m_containingSizer )
 266         m_containingSizer->Remove((wxWindow*)this);
 267
 268     if ( m_windowSizer )
 269         delete m_windowSizer;
 270
 271 #if wxUSE_DRAG_AND_DROP
 272     if ( m_dropTarget )
 273         delete m_dropTarget;
 274 #endif // wxUSE_DRAG_AND_DROP
 275
 276 #if wxUSE_TOOLTIPS
 277     if ( m_tooltip )
 278         delete m_tooltip;
 279 #endif // wxUSE_TOOLTIPS
 280
 281     // reset the dangling pointer our parent window may keep to us
 282     if ( m_parent && m_parent->GetDefaultItem() == this )
 283     {
 284         m_parent->SetDefaultItem(NULL);
 285     }
 286 }
 287
 288 bool wxWindowBase::Destroy()
 289 {
 290     delete this;
 291
 292     return TRUE;
 293 }
 294
 295 bool wxWindowBase::Close(bool force)
 296 {
 297     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 298     event.SetEventObject(this);
 299 #if WXWIN_COMPATIBILITY
 300     event.SetForce(force);
 301 #endif // WXWIN_COMPATIBILITY
 302     event.SetCanVeto(!force);
 303
 304     // return FALSE if window wasn't closed because the application vetoed the
 305     // close event
 306     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 307 }
 308
 309 bool wxWindowBase::DestroyChildren()
 310 {
 311     wxWindowList::Node *node;
 312     for ( ;; )
 313     {
 314         // we iterate until the list becomes empty
 315         node = GetChildren().GetFirst();
 316         if ( !node )
 317             break;
 318
 319         wxWindow *child = node->GetData();
 320
 321         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 322
 323         child->Show(FALSE);
 324         delete child;
 325
 326         wxASSERT_MSG( !GetChildren().Find(child),
 327                       wxT("child didn't remove itself using RemoveChild()") );
 328     }
 329
 330     return TRUE;
 331 }
 332
 333 // ----------------------------------------------------------------------------
 334 // size/position related methods
 335 // ----------------------------------------------------------------------------
 336
 337 // centre the window with respect to its parent in either (or both) directions
 338 void wxWindowBase::Centre(int direction)
 339 {
 340     // the position/size of the parent window or of the entire screen
 341     wxPoint posParent;
 342     int widthParent, heightParent;
 343
 344     wxWindow *parent = NULL;
 345
 346     if ( !(direction & wxCENTRE_ON_SCREEN) )
 347     {
 348         // find the parent to centre this window on: it should be the
 349         // immediate parent for the controls but the top level parent for the
 350         // top level windows (like dialogs)
 351         parent = GetParent();
 352         if ( IsTopLevel() )
 353         {
 354             while ( parent && !parent->IsTopLevel() )
 355             {
 356                 parent = parent->GetParent();
 357             }
 358         }
 359
 360         // did we find the parent?
 361         if ( !parent )
 362         {
 363             // no other choice
 364             direction |= wxCENTRE_ON_SCREEN;
 365         }
 366     }
 367
 368     if ( direction & wxCENTRE_ON_SCREEN )
 369     {
 370         // centre with respect to the whole screen
 371         wxDisplaySize(&widthParent, &heightParent);
 372     }
 373     else
 374     {
 375         if ( IsTopLevel() )
 376         {
 377             // centre on the parent
 378             parent->GetSize(&widthParent, &heightParent);
 379
 380             // adjust to the parents position
 381             posParent = parent->GetPosition();
 382         }
 383         else
 384         {
 385             // centre inside the parents client rectangle
 386             parent->GetClientSize(&widthParent, &heightParent);
 387         }
 388     }
 389
 390     int width, height;
 391     GetSize(&width, &height);
 392
 393     int xNew = -1,
 394         yNew = -1;
 395
 396     if ( direction & wxHORIZONTAL )
 397         xNew = (widthParent - width)/2;
 398
 399     if ( direction & wxVERTICAL )
 400         yNew = (heightParent - height)/2;
 401
 402     xNew += posParent.x;
 403     yNew += posParent.y;
 404
 405     // Base size of the visible dimensions of the display
 406     // to take into account the taskbar
 407     wxRect rect = wxGetClientDisplayRect();
 408     wxSize size (rect.width,rect.height);
 409
 410     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 411     //     but it may mean that the window is placed on other than the main
 412     //     display. Therefore we only make sure centered window is on the main display
 413     //     if the parent is at least partially present here.
 414     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 415     {
 416         if (xNew < 0)
 417             xNew = 0;
 418         else if (xNew+width > size.x)
 419             xNew = size.x-width-1;
 420     }
 421     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 422     {
 423         if (yNew+height > size.y)
 424             yNew = size.y-height-1;
 425
 426         // Make certain that the title bar is initially visible
 427         // always, even if this would push the bottom of the
 428         // dialog of the visible area of the display
 429         if (yNew < 0)
 430             yNew = 0;
 431     }
 432
 433     // move the window to this position (keeping the old size but using
 434     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 435     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 436 }
 437
 438 // fits the window around the children
 439 void wxWindowBase::Fit()
 440 {
 441     if ( GetChildren().GetCount() > 0 )
 442     {
 443         wxSize size = DoGetBestSize();
 444
 445         // for compatibility with the old versions and because it really looks
 446         // slightly more pretty like this, add a pad
 447         size.x += 7;
 448         size.y += 14;
 449
 450         SetClientSize(size);
 451     }
 452     //else: do nothing if we have no children
 453 }
 454
 455 // return the size best suited for the current window
 456 wxSize wxWindowBase::DoGetBestSize() const
 457 {
 458     if ( GetChildren().GetCount() > 0 )
 459     {
 460         // our minimal acceptable size is such that all our windows fit inside
 461         int maxX = 0,
 462             maxY = 0;
 463
 464         for ( wxWindowList::Node *node = GetChildren().GetFirst();
 465               node;
 466               node = node->GetNext() )
 467         {
 468             wxWindow *win = node->GetData();
 469             if ( win->IsTopLevel()
 470 #if wxUSE_STATUSBAR
 471                     || wxDynamicCast(win, wxStatusBar)
 472 #endif // wxUSE_STATUSBAR
 473                )
 474             {
 475                 // dialogs and frames lie in different top level windows -
 476                 // don't deal with them here; as for the status bars, they
 477                 // don't lie in the client area at all
 478                 continue;
 479             }
 480
 481             int wx, wy, ww, wh;
 482             win->GetPosition(&wx, &wy);
 483
 484             // if the window hadn't been positioned yet, assume that it is in
 485             // the origin
 486             if ( wx == -1 )
 487                 wx = 0;
 488             if ( wy == -1 )
 489                 wy = 0;
 490
 491             win->GetSize(&ww, &wh);
 492             if ( wx + ww > maxX )
 493                 maxX = wx + ww;
 494             if ( wy + wh > maxY )
 495                 maxY = wy + wh;
 496         }
 497
 498         return wxSize(maxX, maxY);
 499     }
 500     else
 501     {
 502         // for a generic window there is no natural best size - just use the
 503         // current one
 504         return GetSize();
 505     }
 506 }
 507
 508 // by default the origin is not shifted
 509 wxPoint wxWindowBase::GetClientAreaOrigin() const
 510 {
 511     return wxPoint(0, 0);
 512 }
 513
 514 // set the min/max size of the window
 515 void wxWindowBase::SetSizeHints(int minW, int minH,
 516                                 int maxW, int maxH,
 517                                 int WXUNUSED(incW), int WXUNUSED(incH))
 518 {
 519     m_minWidth = minW;
 520     m_maxWidth = maxW;
 521     m_minHeight = minH;
 522     m_maxHeight = maxH;
 523 }
 524
 525 // ----------------------------------------------------------------------------
 526 // show/hide/enable/disable the window
 527 // ----------------------------------------------------------------------------
 528
 529 bool wxWindowBase::Show(bool show)
 530 {
 531     if ( show != m_isShown )
 532     {
 533         m_isShown = show;
 534
 535         return TRUE;
 536     }
 537     else
 538     {
 539         return FALSE;
 540     }
 541 }
 542
 543 bool wxWindowBase::Enable(bool enable)
 544 {
 545     if ( enable != m_isEnabled )
 546     {
 547         m_isEnabled = enable;
 548
 549         return TRUE;
 550     }
 551     else
 552     {
 553         return FALSE;
 554     }
 555 }
 556 // ----------------------------------------------------------------------------
 557 // RTTI
 558 // ----------------------------------------------------------------------------
 559
 560 bool wxWindowBase::IsTopLevel() const
 561 {
 562     return FALSE;
 563 }
 564
 565 // ----------------------------------------------------------------------------
 566 // reparenting the window
 567 // ----------------------------------------------------------------------------
 568
 569 void wxWindowBase::AddChild(wxWindowBase *child)
 570 {
 571     wxCHECK_RET( child, wxT("can't add a NULL child") );
 572
 573     // this should never happen and it will lead to a crash later if it does
 574     // because RemoveChild() will remove only one node from the children list
 575     // and the other(s) one(s) will be left with dangling pointers in them
 576     wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
 577
 578     GetChildren().Append(child);
 579     child->SetParent(this);
 580 }
 581
 582 void wxWindowBase::RemoveChild(wxWindowBase *child)
 583 {
 584     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 585
 586     GetChildren().DeleteObject(child);
 587     child->SetParent((wxWindow *)NULL);
 588 }
 589
 590 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 591 {
 592     wxWindow *oldParent = GetParent();
 593     if ( newParent == oldParent )
 594     {
 595         // nothing done
 596         return FALSE;
 597     }
 598
 599     // unlink this window from the existing parent.
 600     if ( oldParent )
 601     {
 602         oldParent->RemoveChild(this);
 603     }
 604     else
 605     {
 606         wxTopLevelWindows.DeleteObject(this);
 607     }
 608
 609     // add it to the new one
 610     if ( newParent )
 611     {
 612         newParent->AddChild(this);
 613     }
 614     else
 615     {
 616         wxTopLevelWindows.Append(this);
 617     }
 618
 619     return TRUE;
 620 }
 621
 622 // ----------------------------------------------------------------------------
 623 // event handler stuff
 624 // ----------------------------------------------------------------------------
 625
 626 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 627 {
 628     handler->SetNextHandler(GetEventHandler());
 629     SetEventHandler(handler);
 630 }
 631
 632 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 633 {
 634     wxEvtHandler *handlerA = GetEventHandler();
 635     if ( handlerA )
 636     {
 637         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 638         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 639         SetEventHandler(handlerB);
 640         if ( deleteHandler )
 641         {
 642             delete handlerA;
 643             handlerA = (wxEvtHandler *)NULL;
 644         }
 645     }
 646
 647     return handlerA;
 648 }
 649
 650 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 651 {
 652     wxCHECK_MSG( handler, FALSE, _T("RemoveEventHandler(NULL) called") );
 653
 654     wxEvtHandler *handlerPrev = NULL,
 655                  *handlerCur = GetEventHandler();
 656     while ( handlerCur )
 657     {
 658         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 659
 660         if ( handlerCur == handler )
 661         {
 662             if ( handlerPrev )
 663             {
 664                 handlerPrev->SetNextHandler(handlerNext);
 665             }
 666             else
 667             {
 668                 SetEventHandler(handlerNext);
 669             }
 670
 671             handler->SetNextHandler(NULL);
 672
 673             return TRUE;
 674         }
 675
 676         handlerPrev = handlerCur;
 677         handlerCur = handlerNext;
 678     }
 679
 680     wxFAIL_MSG( _T("where has the event handler gone?") );
 681
 682     return FALSE;
 683 }
 684
 685 // ----------------------------------------------------------------------------
 686 // cursors, fonts &c
 687 // ----------------------------------------------------------------------------
 688
 689 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 690 {
 691     if ( !colour.Ok() || (colour == m_backgroundColour) )
 692         return FALSE;
 693
 694     m_backgroundColour = colour;
 695
 696     m_hasBgCol = TRUE;
 697
 698     return TRUE;
 699 }
 700
 701 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 702 {
 703     if ( !colour.Ok() || (colour == m_foregroundColour) )
 704         return FALSE;
 705
 706     m_foregroundColour = colour;
 707
 708     m_hasFgCol = TRUE;
 709
 710     return TRUE;
 711 }
 712
 713 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 714 {
 715     // setting an invalid cursor is ok, it means that we don't have any special
 716     // cursor
 717     if ( m_cursor == cursor )
 718     {
 719         // no change
 720         return FALSE;
 721     }
 722
 723     m_cursor = cursor;
 724
 725     return TRUE;
 726 }
 727
 728 bool wxWindowBase::SetFont(const wxFont& font)
 729 {
 730     // don't try to set invalid font, always fall back to the default
 731     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 732
 733     if ( fontOk == m_font )
 734     {
 735         // no change
 736         return FALSE;
 737     }
 738
 739     m_font = fontOk;
 740
 741     m_hasFont = TRUE;
 742
 743     return TRUE;
 744 }
 745
 746 #if wxUSE_PALETTE
 747
 748 void wxWindowBase::SetPalette(const wxPalette& pal)
 749 {
 750     m_hasCustomPalette = TRUE;
 751     m_palette = pal;
 752
 753     // VZ: can anyone explain me what do we do here?
 754     wxWindowDC d((wxWindow *) this);
 755     d.SetPalette(pal);
 756 }
 757
 758 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
 759 {
 760     wxWindow *win = (wxWindow *)this;
 761     while ( win && !win->HasCustomPalette() )
 762     {
 763         win = win->GetParent();
 764     }
 765
 766     return win;
 767 }
 768
 769 #endif // wxUSE_PALETTE
 770
 771 #if wxUSE_CARET
 772 void wxWindowBase::SetCaret(wxCaret *caret)
 773 {
 774     if ( m_caret )
 775     {
 776         delete m_caret;
 777     }
 778
 779     m_caret = caret;
 780
 781     if ( m_caret )
 782     {
 783         wxASSERT_MSG( m_caret->GetWindow() == this,
 784                       wxT("caret should be created associated to this window") );
 785     }
 786 }
 787 #endif // wxUSE_CARET
 788
 789 #if wxUSE_VALIDATORS
 790 // ----------------------------------------------------------------------------
 791 // validators
 792 // ----------------------------------------------------------------------------
 793
 794 void wxWindowBase::SetValidator(const wxValidator& validator)
 795 {
 796     if ( m_windowValidator )
 797         delete m_windowValidator;
 798
 799     m_windowValidator = (wxValidator *)validator.Clone();
 800
 801     if ( m_windowValidator )
 802         m_windowValidator->SetWindow(this) ;
 803 }
 804 #endif // wxUSE_VALIDATORS
 805
 806 // ----------------------------------------------------------------------------
 807 // update region stuff
 808 // ----------------------------------------------------------------------------
 809
 810 wxRect wxWindowBase::GetUpdateClientRect() const
 811 {
 812     wxRegion rgnUpdate = GetUpdateRegion();
 813     rgnUpdate.Intersect(GetClientRect());
 814     wxRect rectUpdate = rgnUpdate.GetBox();
 815     wxPoint ptOrigin = GetClientAreaOrigin();
 816     rectUpdate.x -= ptOrigin.x;
 817     rectUpdate.y -= ptOrigin.y;
 818
 819     return rectUpdate;
 820 }
 821
 822 bool wxWindowBase::IsExposed(int x, int y) const
 823 {
 824     return m_updateRegion.Contains(x, y) != wxOutRegion;
 825 }
 826
 827 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
 828 {
 829     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
 830 }
 831
 832 // ----------------------------------------------------------------------------
 833 // find window by id or name
 834 // ----------------------------------------------------------------------------
 835
 836 wxWindow *wxWindowBase::FindWindow( long id )
 837 {
 838     if ( id == m_windowId )
 839         return (wxWindow *)this;
 840
 841     wxWindowBase *res = (wxWindow *)NULL;
 842     wxWindowList::Node *node;
 843     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 844     {
 845         wxWindowBase *child = node->GetData();
 846         res = child->FindWindow( id );
 847     }
 848
 849     return (wxWindow *)res;
 850 }
 851
 852 wxWindow *wxWindowBase::FindWindow( const wxString& name )
 853 {
 854     if ( name == m_windowName )
 855         return (wxWindow *)this;
 856
 857     wxWindowBase *res = (wxWindow *)NULL;
 858     wxWindowList::Node *node;
 859     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 860     {
 861         wxWindow *child = node->GetData();
 862         res = child->FindWindow(name);
 863     }
 864
 865     return (wxWindow *)res;
 866 }
 867
 868 // ----------------------------------------------------------------------------
 869 // dialog oriented functions
 870 // ----------------------------------------------------------------------------
 871
 872 void wxWindowBase::MakeModal(bool modal)
 873 {
 874     // Disable all other windows
 875     if ( IsTopLevel() )
 876     {
 877         wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
 878         while (node)
 879         {
 880             wxWindow *win = node->GetData();
 881             if (win != this)
 882                 win->Enable(!modal);
 883
 884             node = node->GetNext();
 885         }
 886     }
 887 }
 888
 889 bool wxWindowBase::Validate()
 890 {
 891 #if wxUSE_VALIDATORS
 892     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 893
 894     wxWindowList::Node *node;
 895     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 896     {
 897         wxWindowBase *child = node->GetData();
 898         wxValidator *validator = child->GetValidator();
 899         if ( validator && !validator->Validate((wxWindow *)this) )
 900         {
 901             return FALSE;
 902         }
 903
 904         if ( recurse && !child->Validate() )
 905         {
 906             return FALSE;
 907         }
 908     }
 909 #endif // wxUSE_VALIDATORS
 910
 911     return TRUE;
 912 }
 913
 914 bool wxWindowBase::TransferDataToWindow()
 915 {
 916 #if wxUSE_VALIDATORS
 917     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 918
 919     wxWindowList::Node *node;
 920     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 921     {
 922         wxWindowBase *child = node->GetData();
 923         wxValidator *validator = child->GetValidator();
 924         if ( validator && !validator->TransferToWindow() )
 925         {
 926             wxLogWarning(_("Could not transfer data to window"));
 927             wxLog::FlushActive();
 928
 929             return FALSE;
 930         }
 931
 932         if ( recurse )
 933         {
 934             if ( !child->TransferDataToWindow() )
 935             {
 936                 // warning already given
 937                 return FALSE;
 938             }
 939         }
 940     }
 941 #endif // wxUSE_VALIDATORS
 942
 943     return TRUE;
 944 }
 945
 946 bool wxWindowBase::TransferDataFromWindow()
 947 {
 948 #if wxUSE_VALIDATORS
 949     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 950
 951     wxWindowList::Node *node;
 952     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 953     {
 954         wxWindow *child = node->GetData();
 955         wxValidator *validator = child->GetValidator();
 956         if ( validator && !validator->TransferFromWindow() )
 957         {
 958             // nop warning here because the application is supposed to give
 959             // one itself - we don't know here what might have gone wrongly
 960
 961             return FALSE;
 962         }
 963
 964         if ( recurse )
 965         {
 966             if ( !child->TransferDataFromWindow() )
 967             {
 968                 // warning already given
 969                 return FALSE;
 970             }
 971         }
 972     }
 973 #endif // wxUSE_VALIDATORS
 974
 975     return TRUE;
 976 }
 977
 978 void wxWindowBase::InitDialog()
 979 {
 980     wxInitDialogEvent event(GetId());
 981     event.SetEventObject( this );
 982     GetEventHandler()->ProcessEvent(event);
 983 }
 984
 985 // ----------------------------------------------------------------------------
 986 // context-sensitive help support
 987 // ----------------------------------------------------------------------------
 988
 989 #if wxUSE_HELP
 990
 991 // associate this help text with this window
 992 void wxWindowBase::SetHelpText(const wxString& text)
 993 {
 994     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 995     if ( helpProvider )
 996     {
 997         helpProvider->AddHelp(this, text);
 998     }
 999 }
1000
1001 // associate this help text with all windows with the same id as this
1002 // one
1003 void wxWindowBase::SetHelpTextForId(const wxString& text)
1004 {
1005     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1006     if ( helpProvider )
1007     {
1008         helpProvider->AddHelp(GetId(), text);
1009     }
1010 }
1011
1012 // get the help string associated with this window (may be empty)
1013 wxString wxWindowBase::GetHelpText() const
1014 {
1015     wxString text;
1016     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1017     if ( helpProvider )
1018     {
1019         text = helpProvider->GetHelp(this);
1020     }
1021
1022     return text;
1023 }
1024
1025 // show help for this window
1026 void wxWindowBase::OnHelp(wxHelpEvent& event)
1027 {
1028     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1029     if ( helpProvider )
1030     {
1031         if ( helpProvider->ShowHelp(this) )
1032         {
1033             // skip the event.Skip() below
1034             return;
1035         }
1036     }
1037
1038     event.Skip();
1039 }
1040
1041 #endif // wxUSE_HELP
1042
1043 // ----------------------------------------------------------------------------
1044 // tooltipsroot.Replace("\\", "/");
1045 // ----------------------------------------------------------------------------
1046
1047 #if wxUSE_TOOLTIPS
1048
1049 void wxWindowBase::SetToolTip( const wxString &tip )
1050 {
1051     // don't create the new tooltip if we already have one
1052     if ( m_tooltip )
1053     {
1054         m_tooltip->SetTip( tip );
1055     }
1056     else
1057     {
1058         SetToolTip( new wxToolTip( tip ) );
1059     }
1060
1061     // setting empty tooltip text does not remove the tooltip any more - use
1062     // SetToolTip((wxToolTip *)NULL) for this
1063 }
1064
1065 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1066 {
1067     if ( m_tooltip )
1068         delete m_tooltip;
1069
1070     m_tooltip = tooltip;
1071 }
1072
1073 #endif // wxUSE_TOOLTIPS
1074
1075 // ----------------------------------------------------------------------------
1076 // constraints and sizers
1077 // ----------------------------------------------------------------------------
1078
1079 #if wxUSE_CONSTRAINTS
1080
1081 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1082 {
1083     if ( m_constraints )
1084     {
1085         UnsetConstraints(m_constraints);
1086         delete m_constraints;
1087     }
1088     m_constraints = constraints;
1089     if ( m_constraints )
1090     {
1091         // Make sure other windows know they're part of a 'meaningful relationship'
1092         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1093             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1094         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1095             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1096         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1097             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1098         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1099             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1100         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1101             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1102         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1103             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1104         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1105             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1106         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1107             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1108     }
1109 }
1110
1111 // This removes any dangling pointers to this window in other windows'
1112 // constraintsInvolvedIn lists.
1113 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1114 {
1115     if ( c )
1116     {
1117         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1118             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1119         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1120             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1121         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1122             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1123         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1124             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1125         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1126             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1127         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1128             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1129         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1130             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1131         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1132             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1133     }
1134 }
1135
1136 // Back-pointer to other windows we're involved with, so if we delete this
1137 // window, we must delete any constraints we're involved with.
1138 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1139 {
1140     if ( !m_constraintsInvolvedIn )
1141         m_constraintsInvolvedIn = new wxWindowList;
1142     if ( !m_constraintsInvolvedIn->Find(otherWin) )
1143         m_constraintsInvolvedIn->Append(otherWin);
1144 }
1145
1146 // REMOVE back-pointer to other windows we're involved with.
1147 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1148 {
1149     if ( m_constraintsInvolvedIn )
1150         m_constraintsInvolvedIn->DeleteObject(otherWin);
1151 }
1152
1153 // Reset any constraints that mention this window
1154 void wxWindowBase::DeleteRelatedConstraints()
1155 {
1156     if ( m_constraintsInvolvedIn )
1157     {
1158         wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
1159         while (node)
1160         {
1161             wxWindow *win = node->GetData();
1162             wxLayoutConstraints *constr = win->GetConstraints();
1163
1164             // Reset any constraints involving this window
1165             if ( constr )
1166             {
1167                 constr->left.ResetIfWin(this);
1168                 constr->top.ResetIfWin(this);
1169                 constr->right.ResetIfWin(this);
1170                 constr->bottom.ResetIfWin(this);
1171                 constr->width.ResetIfWin(this);
1172                 constr->height.ResetIfWin(this);
1173                 constr->centreX.ResetIfWin(this);
1174                 constr->centreY.ResetIfWin(this);
1175             }
1176
1177             wxWindowList::Node *next = node->GetNext();
1178             delete node;
1179             node = next;
1180         }
1181
1182         delete m_constraintsInvolvedIn;
1183         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1184     }
1185 }
1186 #endif
1187
1188 void wxWindowBase::SetSizer(wxSizer *sizer)
1189 {
1190     if (m_windowSizer) delete m_windowSizer;
1191
1192     m_windowSizer = sizer;
1193 }
1194
1195 bool wxWindowBase::Layout()
1196 {
1197     // If there is a sizer, use it instead of the constraints
1198     if ( GetSizer() )
1199     {
1200         int w, h;
1201         GetClientSize(&w, &h);
1202
1203         GetSizer()->SetDimension( 0, 0, w, h );
1204     }
1205 #if wxUSE_CONSTRAINTS
1206     else
1207     {
1208         wxLayoutConstraints *constr = GetConstraints();
1209         bool wasOk = constr && constr->AreSatisfied();
1210
1211         ResetConstraints();   // Mark all constraints as unevaluated
1212
1213         // if we're a top level panel (i.e. our parent is frame/dialog), our
1214         // own constraints will never be satisfied any more unless we do it
1215         // here
1216         if ( wasOk )
1217         {
1218             int noChanges = 1;
1219             while ( noChanges > 0 )
1220             {
1221                 constr->SatisfyConstraints(this, &noChanges);
1222             }
1223         }
1224
1225         DoPhase(1);           // Layout children
1226         DoPhase(2);           // Layout grand children
1227         SetConstraintSizes(); // Recursively set the real window sizes
1228     }
1229 #endif
1230
1231     return TRUE;
1232 }
1233
1234 #if wxUSE_CONSTRAINTS
1235 // Do a phase of evaluating constraints: the default behaviour. wxSizers may
1236 // do a similar thing, but also impose their own 'constraints' and order the
1237 // evaluation differently.
1238 bool wxWindowBase::LayoutPhase1(int *noChanges)
1239 {
1240     wxLayoutConstraints *constr = GetConstraints();
1241     if ( constr )
1242     {
1243         return constr->SatisfyConstraints(this, noChanges);
1244     }
1245     else
1246         return TRUE;
1247 }
1248
1249 bool wxWindowBase::LayoutPhase2(int *noChanges)
1250 {
1251     *noChanges = 0;
1252
1253     // Layout children
1254     DoPhase(1);
1255     DoPhase(2);
1256     return TRUE;
1257 }
1258
1259 // Do a phase of evaluating child constraints
1260 bool wxWindowBase::DoPhase(int phase)
1261 {
1262     int noIterations = 0;
1263     int maxIterations = 500;
1264     int noChanges = 1;
1265     int noFailures = 0;
1266     wxWindowList succeeded;
1267     while ((noChanges > 0) && (noIterations < maxIterations))
1268     {
1269         noChanges = 0;
1270         noFailures = 0;
1271         wxWindowList::Node *node = GetChildren().GetFirst();
1272         while (node)
1273         {
1274             wxWindow *child = node->GetData();
1275             if ( !child->IsTopLevel() )
1276             {
1277                 wxLayoutConstraints *constr = child->GetConstraints();
1278                 if ( constr )
1279                 {
1280                     if ( !succeeded.Find(child) )
1281                     {
1282                         int tempNoChanges = 0;
1283                         bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
1284                         noChanges += tempNoChanges;
1285                         if ( success )
1286                         {
1287                             succeeded.Append(child);
1288                         }
1289                     }
1290                 }
1291             }
1292             node = node->GetNext();
1293         }
1294
1295         noIterations++;
1296     }
1297
1298     return TRUE;
1299 }
1300
1301 void wxWindowBase::ResetConstraints()
1302 {
1303     wxLayoutConstraints *constr = GetConstraints();
1304     if ( constr )
1305     {
1306         constr->left.SetDone(FALSE);
1307         constr->top.SetDone(FALSE);
1308         constr->right.SetDone(FALSE);
1309         constr->bottom.SetDone(FALSE);
1310         constr->width.SetDone(FALSE);
1311         constr->height.SetDone(FALSE);
1312         constr->centreX.SetDone(FALSE);
1313         constr->centreY.SetDone(FALSE);
1314     }
1315
1316     wxWindowList::Node *node = GetChildren().GetFirst();
1317     while (node)
1318     {
1319         wxWindow *win = node->GetData();
1320         if ( !win->IsTopLevel() )
1321             win->ResetConstraints();
1322         node = node->GetNext();
1323     }
1324 }
1325
1326 // Need to distinguish between setting the 'fake' size for windows and sizers,
1327 // and setting the real values.
1328 void wxWindowBase::SetConstraintSizes(bool recurse)
1329 {
1330     wxLayoutConstraints *constr = GetConstraints();
1331     if ( constr && constr->AreSatisfied() )
1332     {
1333         int x = constr->left.GetValue();
1334         int y = constr->top.GetValue();
1335         int w = constr->width.GetValue();
1336         int h = constr->height.GetValue();
1337
1338         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1339              (constr->height.GetRelationship() != wxAsIs) )
1340         {
1341             SetSize(x, y, w, h);
1342         }
1343         else
1344         {
1345             // If we don't want to resize this window, just move it...
1346             Move(x, y);
1347         }
1348     }
1349     else if ( constr )
1350     {
1351         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1352                    GetClassInfo()->GetClassName(),
1353                    GetName().c_str());
1354     }
1355
1356     if ( recurse )
1357     {
1358         wxWindowList::Node *node = GetChildren().GetFirst();
1359         while (node)
1360         {
1361             wxWindow *win = node->GetData();
1362             if ( !win->IsTopLevel() && win->GetConstraints() )
1363                 win->SetConstraintSizes();
1364             node = node->GetNext();
1365         }
1366     }
1367 }
1368
1369 // Only set the size/position of the constraint (if any)
1370 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1371 {
1372     wxLayoutConstraints *constr = GetConstraints();
1373     if ( constr )
1374     {
1375         if ( x != -1 )
1376         {
1377             constr->left.SetValue(x);
1378             constr->left.SetDone(TRUE);
1379         }
1380         if ( y != -1 )
1381         {
1382             constr->top.SetValue(y);
1383             constr->top.SetDone(TRUE);
1384         }
1385         if ( w != -1 )
1386         {
1387             constr->width.SetValue(w);
1388             constr->width.SetDone(TRUE);
1389         }
1390         if ( h != -1 )
1391         {
1392             constr->height.SetValue(h);
1393             constr->height.SetDone(TRUE);
1394         }
1395     }
1396 }
1397
1398 void wxWindowBase::MoveConstraint(int x, int y)
1399 {
1400     wxLayoutConstraints *constr = GetConstraints();
1401     if ( constr )
1402     {
1403         if ( x != -1 )
1404         {
1405             constr->left.SetValue(x);
1406             constr->left.SetDone(TRUE);
1407         }
1408         if ( y != -1 )
1409         {
1410             constr->top.SetValue(y);
1411             constr->top.SetDone(TRUE);
1412         }
1413     }
1414 }
1415
1416 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1417 {
1418     wxLayoutConstraints *constr = GetConstraints();
1419     if ( constr )
1420     {
1421         *w = constr->width.GetValue();
1422         *h = constr->height.GetValue();
1423     }
1424     else
1425         GetSize(w, h);
1426 }
1427
1428 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1429 {
1430     wxLayoutConstraints *constr = GetConstraints();
1431     if ( constr )
1432     {
1433         *w = constr->width.GetValue();
1434         *h = constr->height.GetValue();
1435     }
1436     else
1437         GetClientSize(w, h);
1438 }
1439
1440 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1441 {
1442     wxLayoutConstraints *constr = GetConstraints();
1443     if ( constr )
1444     {
1445         *x = constr->left.GetValue();
1446         *y = constr->top.GetValue();
1447     }
1448     else
1449         GetPosition(x, y);
1450 }
1451
1452 #endif // wxUSE_CONSTRAINTS
1453
1454 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags)
1455 {
1456     // don't do it for the dialogs/frames - they float independently of their
1457     // parent
1458     if ( !IsTopLevel() )
1459     {
1460         wxWindow *parent = GetParent();
1461         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1462         {
1463             wxPoint pt(parent->GetClientAreaOrigin());
1464             x += pt.x;
1465             y += pt.y;
1466         }
1467     }
1468 }
1469
1470 // ----------------------------------------------------------------------------
1471 // do Update UI processing for child controls
1472 // ----------------------------------------------------------------------------
1473
1474 // TODO: should this be implemented for the child window rather
1475 // than the parent? Then you can override it e.g. for wxCheckBox
1476 // to do the Right Thing rather than having to assume a fixed number
1477 // of control classes.
1478 void wxWindowBase::UpdateWindowUI()
1479 {
1480 #if wxUSE_CONTROLS
1481     wxUpdateUIEvent event(GetId());
1482     event.m_eventObject = this;
1483
1484     if ( GetEventHandler()->ProcessEvent(event) )
1485     {
1486         if ( event.GetSetEnabled() )
1487             Enable(event.GetEnabled());
1488
1489         if ( event.GetSetText() )
1490         {
1491             wxControl *control = wxDynamicCastThis(wxControl);
1492             if ( control )
1493             {
1494 #if wxUSE_TEXTCTRL
1495                 wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
1496                 if ( text )
1497                     text->SetValue(event.GetText());
1498                 else
1499 #endif // wxUSE_TEXTCTRL
1500                     control->SetLabel(event.GetText());
1501             }
1502         }
1503
1504 #if wxUSE_CHECKBOX
1505         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1506         if ( checkbox )
1507         {
1508             if ( event.GetSetChecked() )
1509                 checkbox->SetValue(event.GetChecked());
1510         }
1511 #endif // wxUSE_CHECKBOX
1512
1513 #if wxUSE_RADIOBTN
1514         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1515         if ( radiobtn )
1516         {
1517             if ( event.GetSetChecked() )
1518                 radiobtn->SetValue(event.GetChecked());
1519         }
1520 #endif // wxUSE_RADIOBTN
1521     }
1522 #endif // wxUSE_CONTROLS
1523 }
1524
1525 // ----------------------------------------------------------------------------
1526 // dialog units translations
1527 // ----------------------------------------------------------------------------
1528
1529 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1530 {
1531     int charWidth = GetCharWidth();
1532     int charHeight = GetCharHeight();
1533     wxPoint pt2(-1, -1);
1534     if (pt.x != -1)
1535         pt2.x = (int) ((pt.x * 4) / charWidth) ;
1536     if (pt.y != -1)
1537         pt2.y = (int) ((pt.y * 8) / charHeight) ;
1538
1539     return pt2;
1540 }
1541
1542 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1543 {
1544     int charWidth = GetCharWidth();
1545     int charHeight = GetCharHeight();
1546     wxPoint pt2(-1, -1);
1547     if (pt.x != -1)
1548         pt2.x = (int) ((pt.x * charWidth) / 4) ;
1549     if (pt.y != -1)
1550         pt2.y = (int) ((pt.y * charHeight) / 8) ;
1551
1552     return pt2;
1553 }
1554
1555 // ----------------------------------------------------------------------------
1556 // event handlers
1557 // ----------------------------------------------------------------------------
1558
1559 // propagate the colour change event to the subwindows
1560 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1561 {
1562     wxWindowList::Node *node = GetChildren().GetFirst();
1563     while ( node )
1564     {
1565         // Only propagate to non-top-level windows
1566         wxWindow *win = node->GetData();
1567         if ( !win->IsTopLevel() )
1568         {
1569             wxSysColourChangedEvent event2;
1570             event.m_eventObject = win;
1571             win->GetEventHandler()->ProcessEvent(event2);
1572         }
1573
1574         node = node->GetNext();
1575     }
1576 }
1577
1578 // the default action is to populate dialog with data when it's created
1579 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1580 {
1581     TransferDataToWindow();
1582 }
1583
1584 // process Ctrl-Alt-mclick
1585 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1586 {
1587 #if wxUSE_MSGDLG
1588     if ( event.ControlDown() && event.AltDown() )
1589     {
1590         // don't translate these strings
1591         wxString port;
1592
1593 #ifdef __WXUNIVERSAL__
1594         port = _T("Univ/");
1595 #endif // __WXUNIVERSAL__
1596
1597         switch ( wxGetOsVersion() )
1598         {
1599             case wxMOTIF_X:     port = _T("Motif"); break;
1600             case wxMAC:
1601             case wxMAC_DARWIN:  port = _T("Mac"); break;
1602             case wxBEOS:        port = _T("BeOS"); break;
1603             case wxGTK:
1604             case wxGTK_WIN32:
1605             case wxGTK_OS2:
1606             case wxGTK_BEOS:    port = _T("GTK"); break;
1607             case wxWINDOWS:
1608             case wxPENWINDOWS:
1609             case wxWINDOWS_NT:
1610             case wxWIN32S:
1611             case wxWIN95:
1612             case wxWIN386:      port = _T("MS Windows"); break;
1613             case wxMGL_UNIX:
1614             case wxMGL_X:
1615             case wxMGL_WIN32:
1616             case wxMGL_OS2:     port = _T("MGL"); break;
1617             case wxWINDOWS_OS2:
1618             case wxOS2_PM:      port = _T("OS/2"); break;
1619             default:            port = _T("unknown"); break;
1620         }
1621
1622         wxMessageBox(wxString::Format(
1623                                       _T(
1624                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
1625                                         ),
1626                                       port.c_str(),
1627                                       wxMAJOR_VERSION,
1628                                       wxMINOR_VERSION,
1629                                       wxRELEASE_NUMBER,
1630 #if wxUSE_UNICODE
1631                                       L" (Unicode)",
1632 #else
1633                                       "",
1634 #endif
1635                                       __TDATE__,
1636                                       __TTIME__
1637                                      ),
1638                      _T("wxWindows information"),
1639                      wxICON_INFORMATION | wxOK,
1640                      (wxWindow *)this);
1641     }
1642     else
1643 #endif // wxUSE_MSGDLG
1644     {
1645         event.Skip();
1646     }
1647 }
1648
1649 // ----------------------------------------------------------------------------
1650 // list classes implementation
1651 // ----------------------------------------------------------------------------
1652
1653 void wxWindowListNode::DeleteData()
1654 {
1655     delete (wxWindow *)GetData();
1656 }
1657
1658 // ----------------------------------------------------------------------------
1659 // borders
1660 // ----------------------------------------------------------------------------
1661
1662 wxBorder wxWindowBase::GetBorder() const
1663 {
1664     wxBorder border = (wxBorder)(m_windowStyle & wxBORDER_MASK);
1665     if ( border == wxBORDER_DEFAULT )
1666     {
1667         border = GetDefaultBorder();
1668     }
1669
1670     return border;
1671 }
1672
1673 wxBorder wxWindowBase::GetDefaultBorder() const
1674 {
1675     return wxBORDER_NONE;
1676 }
1677
1678 // ----------------------------------------------------------------------------
1679 // hit testing
1680 // ----------------------------------------------------------------------------
1681
1682 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
1683 {
1684     // here we just check if the point is inside the window or not
1685
1686     // check the top and left border first
1687     bool outside = x < 0 || y < 0;
1688     if ( !outside )
1689     {
1690         // check the right and bottom borders too
1691         wxSize size = GetSize();
1692         outside = x >= size.x || y >= size.y;
1693     }
1694
1695     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
1696 }
1697
1698 // ----------------------------------------------------------------------------
1699 // mouse capture
1700 // ----------------------------------------------------------------------------
1701
1702 struct WXDLLEXPORT wxWindowNext
1703 {
1704     wxWindow *win;
1705     wxWindowNext *next;
1706 } *wxWindowBase::ms_winCaptureNext = NULL;
1707
1708 void wxWindowBase::CaptureMouse()
1709 {
1710     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(0x%08x)"), this);
1711
1712     wxWindow *winOld = GetCapture();
1713     if ( winOld )
1714     {
1715         ((wxWindowBase*) winOld)->DoReleaseMouse();
1716
1717         // save it on stack
1718         wxWindowNext *item = new wxWindowNext;
1719         item->win = winOld;
1720         item->next = ms_winCaptureNext;
1721         ms_winCaptureNext = item;
1722     }
1723     //else: no mouse capture to save
1724
1725     DoCaptureMouse();
1726 }
1727
1728 void wxWindowBase::ReleaseMouse()
1729 {
1730     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(0x%08x)"), this);
1731
1732     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") )
1733
1734     DoReleaseMouse();
1735
1736     if ( ms_winCaptureNext )
1737     {
1738         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
1739
1740         wxWindowNext *item = ms_winCaptureNext;
1741         ms_winCaptureNext = item->next;
1742         delete item;
1743     }
1744     //else: stack is empty, no previous capture
1745
1746     wxLogTrace(_T("mousecapture"),
1747                _T("After ReleaseMouse() mouse is captured by 0x%08x"),
1748                GetCapture());
1749 }
1750