src/motif/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/mdi.cpp
   3 // Purpose:     MDI classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __VMS
  16 #define XtDisplay XTDISPLAY
  17 #define XtWindow XTWINDOW
  18 #endif
  19
  20 #include "wx/mdi.h"
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/menu.h"
  24     #include "wx/icon.h"
  25     #include "wx/settings.h"
  26 #endif
  27
  28 #ifdef __VMS__
  29 #pragma message disable nosimpint
  30 #endif
  31 #include <Xm/Xm.h>
  32 #include <Xm/BulletinB.h>
  33 #include <Xm/Form.h>
  34 #include <Xm/MainW.h>
  35 #include <Xm/RowColumn.h>
  36 #include <Xm/CascadeBG.h>
  37 #include <Xm/Text.h>
  38 #include <Xm/PushBG.h>
  39 #include <Xm/AtomMgr.h>
  40 #include <Xm/Protocols.h>
  41 #ifdef __VMS__
  42 #pragma message enable nosimpint
  43 #endif
  44
  45 #include "wx/motif/private.h"
  46
  47 extern wxList wxModelessWindows;
  48
  49 // Implemented in frame.cpp
  50 extern void wxFrameFocusProc(Widget workArea, XtPointer clientData,
  51                              XmAnyCallbackStruct *cbs);
  52
  53 #define wxID_NOTEBOOK_CLIENT_AREA wxID_HIGHEST + 100
  54
  55 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
  56 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
  57 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxNotebook)
  58
  59 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
  60     EVT_SIZE(wxMDIParentFrame::OnSize)
  61     EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
  62     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
  63     EVT_MENU_HIGHLIGHT_ALL(wxMDIParentFrame::OnMenuHighlight)
  64 END_EVENT_TABLE()
  65
  66 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxNotebook)
  67     EVT_SCROLL(wxMDIClientWindow::OnScroll)
  68     EVT_NOTEBOOK_PAGE_CHANGED(wxID_NOTEBOOK_CLIENT_AREA, wxMDIClientWindow::OnPageChanged)
  69 END_EVENT_TABLE()
  70
  71
  72 // Parent frame
  73
  74 wxMDIParentFrame::wxMDIParentFrame()
  75 {
  76     m_clientWindow = (wxMDIClientWindow*) NULL;
  77     m_activeChild = (wxMDIChildFrame*) NULL;
  78     m_activeMenuBar = (wxMenuBar*) NULL;
  79 }
  80
  81 bool wxMDIParentFrame::Create(wxWindow *parent,
  82                               wxWindowID id,
  83                               const wxString& title,
  84                               const wxPoint& pos,
  85                               const wxSize& size,
  86                               long style,
  87                               const wxString& name)
  88 {
  89     m_clientWindow = (wxMDIClientWindow*) NULL;
  90     m_activeChild = (wxMDIChildFrame*) NULL;
  91     m_activeMenuBar = (wxMenuBar*) NULL;
  92
  93     bool success = wxFrame::Create(parent, id, title, pos, size, style, name);
  94     if (success)
  95     {
  96         // TODO: app cannot override OnCreateClient since
  97         // wxMDIParentFrame::OnCreateClient will still be called
  98         // (we're in the constructor). How to resolve?
  99
 100         m_clientWindow = OnCreateClient();
 101
 102         // Uses own style for client style
 103         m_clientWindow->CreateClient(this, GetWindowStyleFlag());
 104
 105         int w, h;
 106         GetClientSize(& w, & h);
 107         m_clientWindow->SetSize(0, 0, w, h);
 108         return true;
 109     }
 110     else
 111         return false;
 112 }
 113
 114 wxMDIParentFrame::~wxMDIParentFrame()
 115 {
 116     // Make sure we delete the client window last of all
 117     RemoveChild(m_clientWindow);
 118
 119     DestroyChildren();
 120
 121     delete m_clientWindow;
 122     m_clientWindow = NULL;
 123 }
 124
 125 void wxMDIParentFrame::SetMenuBar(wxMenuBar *menu_bar)
 126 {
 127     m_frameMenuBar = menu_bar;
 128
 129     SetChildMenuBar((wxMDIChildFrame*) NULL);
 130 }
 131
 132 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 133 {
 134 #if wxUSE_CONSTRAINTS
 135     if (GetAutoLayout())
 136         Layout();
 137 #endif
 138     int x = 0;
 139     int y = 0;
 140     int width, height;
 141     GetClientSize(&width, &height);
 142
 143     if ( GetClientWindow() )
 144         GetClientWindow()->SetSize(x, y, width, height);
 145 }
 146
 147 void wxMDIParentFrame::DoGetClientSize(int *width, int *height) const
 148 {
 149     wxFrame::DoGetClientSize(width, height);
 150 }
 151
 152 void wxMDIParentFrame::OnActivate(wxActivateEvent& WXUNUSED(event))
 153 {
 154     // Do nothing
 155 }
 156
 157 // Returns the active MDI child window
 158 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 159 {
 160     return m_activeChild;
 161 }
 162
 163 // Create the client window class (don't Create the window,
 164 // just return a new class)
 165 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 166 {
 167     return new wxMDIClientWindow ;
 168 }
 169
 170 // Set the child's menu into the parent frame
 171 void wxMDIParentFrame::SetChildMenuBar(wxMDIChildFrame* child)
 172 {
 173     wxMenuBar* oldMenuBar = m_activeMenuBar;
 174
 175     if (child == (wxMDIChildFrame*) NULL)  // No child: use parent frame
 176     {
 177         if (GetMenuBar() && (GetMenuBar() != m_activeMenuBar))
 178         {
 179             //            if (m_activeMenuBar)
 180             //                m_activeMenuBar->DestroyMenuBar();
 181
 182             m_activeMenuBar = GetMenuBar();
 183             m_activeMenuBar->CreateMenuBar(this);
 184             /*
 185             if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
 186             XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
 187             */
 188             if (oldMenuBar && oldMenuBar->GetMainWidget())
 189                 XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
 190
 191         }
 192     }
 193     else if (child->GetMenuBar() == (wxMenuBar*) NULL) // No child menu bar: use parent frame
 194     {
 195         if (GetMenuBar() && (GetMenuBar() != m_activeMenuBar))
 196         {
 197             //            if (m_activeMenuBar)
 198             //                m_activeMenuBar->DestroyMenuBar();
 199             m_activeMenuBar = GetMenuBar();
 200             m_activeMenuBar->CreateMenuBar(this);
 201             /*
 202             if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
 203             XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
 204             */
 205             if (oldMenuBar && oldMenuBar->GetMainWidget())
 206                 XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
 207         }
 208     }
 209     else // The child has a menubar
 210     {
 211         if (child->GetMenuBar() != m_activeMenuBar)
 212         {
 213             //            if (m_activeMenuBar)
 214             //                m_activeMenuBar->DestroyMenuBar();
 215
 216             m_activeMenuBar = child->GetMenuBar();
 217             m_activeMenuBar->CreateMenuBar(this);
 218             /*
 219             if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
 220             XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
 221             */
 222             if (oldMenuBar && oldMenuBar->GetMainWidget())
 223                 XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
 224         }
 225     }
 226 }
 227
 228 // Redirect events to active child first
 229 bool wxMDIParentFrame::ProcessEvent(wxEvent& event)
 230 {
 231     // Stops the same event being processed repeatedly
 232     static wxEventType inEvent = wxEVT_NULL;
 233     if (inEvent == event.GetEventType())
 234         return false;
 235
 236     inEvent = event.GetEventType();
 237
 238     bool res = false;
 239     if (m_activeChild && event.IsKindOf(CLASSINFO(wxCommandEvent)))
 240     {
 241         res = m_activeChild->HandleWindowEvent(event);
 242     }
 243
 244     if (!res)
 245         res = GetEventHandler()->wxEvtHandler::ProcessEvent(event);
 246
 247     inEvent = wxEVT_NULL;
 248
 249     return res;
 250 }
 251
 252 void wxMDIParentFrame::DoSetSize(int x, int y,
 253                                  int width, int height,
 254                                  int sizeFlags)
 255 {
 256     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 257 }
 258
 259 void wxMDIParentFrame::DoSetClientSize(int width, int height)
 260 {
 261     wxWindow::DoSetClientSize(width, height);
 262 }
 263
 264 // Responds to colour changes, and passes event on to children.
 265 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 266 {
 267     // TODO
 268
 269     // Propagate the event to the non-top-level children
 270     wxFrame::OnSysColourChanged(event);
 271 }
 272
 273 // MDI operations
 274 void wxMDIParentFrame::Cascade()
 275 {
 276     // TODO
 277 }
 278
 279 void wxMDIParentFrame::Tile(wxOrientation WXUNUSED(orient))
 280 {
 281     // TODO
 282 }
 283
 284 void wxMDIParentFrame::ArrangeIcons()
 285 {
 286     // TODO
 287 }
 288
 289 void wxMDIParentFrame::ActivateNext()
 290 {
 291     // TODO
 292 }
 293
 294 void wxMDIParentFrame::ActivatePrevious()
 295 {
 296     // TODO
 297 }
 298
 299 // Default menu selection behaviour - display a help string
 300 void wxMDIParentFrame::OnMenuHighlight(wxMenuEvent& event)
 301 {
 302     if (GetStatusBar())
 303     {
 304         if (event.GetMenuId() == -1)
 305             SetStatusText(wxEmptyString);
 306         else
 307         {
 308             wxMenuBar *menuBar = (wxMenuBar*) NULL;
 309             if (GetActiveChild())
 310               menuBar = GetActiveChild()->GetMenuBar();
 311             else
 312               menuBar = GetMenuBar();
 313             if (menuBar)
 314             {
 315                 wxString helpString(menuBar->GetHelpString(event.GetMenuId()));
 316                 if (!helpString.empty())
 317                     SetStatusText(helpString);
 318             }
 319         }
 320     }
 321 }
 322
 323 // Child frame
 324
 325 wxMDIChildFrame::wxMDIChildFrame()
 326 {
 327     m_mdiParentFrame = (wxMDIParentFrame*) NULL;
 328 }
 329
 330 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 331                              wxWindowID id,
 332                              const wxString& title,
 333                              const wxPoint& pos,
 334                              const wxSize& size,
 335                              long style,
 336                              const wxString& name)
 337 {
 338     SetName(name);
 339     SetWindowStyleFlag(style);
 340
 341     if ( id > -1 )
 342         m_windowId = id;
 343     else
 344         m_windowId = (int)NewControlId();
 345
 346     wxMDIClientWindow* clientWindow = parent->GetClientWindow();
 347
 348     wxCHECK_MSG( clientWindow, false, "Missing MDI client window." );
 349
 350     clientWindow->AddChild(this);
 351
 352     SetMDIParentFrame(parent);
 353     PreCreation();
 354
 355     int width = size.x;
 356     int height = size.y;
 357     if (width == -1)
 358         width = 200; // TODO: give reasonable default
 359     if (height == -1)
 360         height = 200; // TODO: give reasonable default
 361
 362     // We're deactivating the old child
 363     wxMDIChildFrame* oldActiveChild = parent->GetActiveChild();
 364     if (oldActiveChild)
 365     {
 366         wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
 367         event.SetEventObject( oldActiveChild );
 368         oldActiveChild->HandleWindowEvent(event);
 369     }
 370
 371     // This is the currently active child
 372     parent->SetActiveChild((wxMDIChildFrame*) this);
 373
 374     // This time we'll try a bog-standard bulletin board for
 375     // the 'frame'. A main window doesn't seem to work.
 376
 377     m_mainWidget = (WXWidget) XtVaCreateWidget("client",
 378         xmBulletinBoardWidgetClass, (Widget) clientWindow->GetTopWidget(),
 379         XmNmarginWidth, 0,
 380         XmNmarginHeight, 0,
 381         /*
 382         XmNrightAttachment, XmATTACH_FORM,
 383         XmNleftAttachment, XmATTACH_FORM,
 384         XmNtopAttachment, XmATTACH_FORM,
 385         XmNbottomAttachment, XmATTACH_FORM,
 386         */
 387         XmNresizePolicy, XmRESIZE_NONE,
 388         NULL);
 389
 390     XtAddEventHandler((Widget) m_mainWidget, ExposureMask,False,
 391         wxUniversalRepaintProc, (XtPointer) this);
 392
 393     PostCreation();
 394     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
 395
 396     XtManageChild((Widget) m_mainWidget);
 397
 398     SetTitle(title);
 399
 400     clientWindow->AddPage(this, title, true);
 401     clientWindow->Refresh();
 402
 403     // Positions the toolbar and status bar -- but we don't have any.
 404     //    PreResize();
 405
 406     wxModelessWindows.Append(this);
 407     return true;
 408 }
 409
 410
 411 wxMDIChildFrame::~wxMDIChildFrame()
 412 {
 413     if (m_mainWidget)
 414       XtRemoveEventHandler((Widget) m_mainWidget, ExposureMask,False,
 415         wxUniversalRepaintProc, (XtPointer) this);
 416
 417     if (GetMDIParentFrame())
 418     {
 419         wxMDIParentFrame* parentFrame = GetMDIParentFrame();
 420
 421         if (parentFrame->GetActiveChild() == this)
 422             parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
 423         wxMDIClientWindow* clientWindow = parentFrame->GetClientWindow();
 424
 425         // Remove page if still there
 426         {
 427             int i = clientWindow->FindPage(this);
 428
 429             if (i != -1)
 430             {
 431                 clientWindow->RemovePage(i);
 432                 clientWindow->Refresh();
 433             }
 434         }
 435
 436         // Set the selection to the first remaining page
 437         if (clientWindow->GetPageCount() > 0)
 438         {
 439             wxMDIChildFrame* child = (wxMDIChildFrame*)  clientWindow->GetPage(0);
 440             parentFrame->SetActiveChild(child);
 441             parentFrame->SetChildMenuBar(child);
 442         }
 443         else
 444         {
 445             parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
 446             parentFrame->SetChildMenuBar((wxMDIChildFrame*) NULL);
 447         }
 448     }
 449 }
 450
 451 #if 0
 452 // Implementation: intercept and act upon raise and lower commands.
 453 void wxMDIChildFrame::OnRaise()
 454 {
 455     wxMDIParentFrame* parentFrame = (wxMDIParentFrame*) GetParent() ;
 456     wxMDIChildFrame* oldActiveChild = parentFrame->GetActiveChild();
 457     parentFrame->SetActiveChild(this);
 458
 459     if (oldActiveChild)
 460     {
 461         wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
 462         event.SetEventObject( oldActiveChild );
 463         oldActiveChild->HandleWindowEvent(event);
 464     }
 465
 466     wxActivateEvent event(wxEVT_ACTIVATE, true, this->GetId());
 467     event.SetEventObject( this );
 468     this->HandleWindowEvent(event);
 469 }
 470
 471 void wxMDIChildFrame::OnLower()
 472 {
 473     wxMDIParentFrame* parentFrame = (wxMDIParentFrame*) GetParent() ;
 474     wxMDIChildFrame* oldActiveChild = parentFrame->GetActiveChild();
 475
 476     if (oldActiveChild == this)
 477     {
 478         wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
 479         event.SetEventObject( oldActiveChild );
 480         oldActiveChild->HandleWindowEvent(event);
 481     }
 482     // TODO: unfortunately we don't now know which is the top-most child,
 483     // so make the active child NULL.
 484     parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
 485 }
 486 #endif
 487
 488 // Set the client size (i.e. leave the calculation of borders etc.
 489 // to wxWidgets)
 490 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 491 {
 492     wxWindow::DoSetClientSize(width, height);
 493 }
 494
 495 void wxMDIChildFrame::DoGetClientSize(int* width, int* height) const
 496 {
 497     wxWindow::DoGetSize(width, height);
 498 }
 499
 500 void wxMDIChildFrame::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 501 {
 502     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 503 }
 504
 505 void wxMDIChildFrame::DoGetSize(int* width, int* height) const
 506 {
 507     wxWindow::DoGetSize(width, height);
 508 }
 509
 510 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 511 {
 512     wxWindow::DoGetPosition(x, y);
 513 }
 514
 515 bool wxMDIChildFrame::Show(bool show)
 516 {
 517     SetVisibleStatus( show );
 518     return wxWindow::Show(show);
 519 }
 520
 521 void wxMDIChildFrame::SetMenuBar(wxMenuBar *menuBar)
 522 {
 523     // Don't create the underlying menubar yet; need to recreate
 524     // it every time the child is activated.
 525     m_frameMenuBar = menuBar;
 526
 527     // We make the assumption that if you're setting the menubar,
 528     // this is the currently active child.
 529     GetMDIParentFrame()->SetChildMenuBar(this);
 530 }
 531
 532 // Set icon
 533 void wxMDIChildFrame::SetIcon(const wxIcon& icon)
 534 {
 535     m_icons = wxIconBundle( icon );
 536
 537     if (icon.Ok())
 538     {
 539         // Not appropriate since there are no icons in
 540         // a tabbed window
 541     }
 542 }
 543
 544 void wxMDIChildFrame::SetIcons(const wxIconBundle& icons)
 545 {
 546     m_icons = icons;
 547 }
 548
 549 void wxMDIChildFrame::SetTitle(const wxString& title)
 550 {
 551     wxTopLevelWindow::SetTitle( title );
 552     wxMDIClientWindow* clientWindow = GetMDIParentFrame()->GetClientWindow();
 553
 554     // Remove page if still there
 555     {
 556         int i = clientWindow->FindPage(this);
 557
 558         if (i != -1)
 559             clientWindow->SetPageText(i, title);
 560     }
 561 }
 562
 563 // MDI operations
 564 void wxMDIChildFrame::Maximize()
 565 {
 566     // TODO
 567 }
 568
 569 void wxMDIChildFrame::Iconize(bool WXUNUSED(iconize))
 570 {
 571     // TODO
 572 }
 573
 574 bool wxMDIChildFrame::IsIconized() const
 575 {
 576     return false;
 577 }
 578
 579 // Is it maximized? Always maximized under Motif, using the
 580 // tabbed MDI implementation.
 581 bool wxMDIChildFrame::IsMaximized(void) const
 582 {
 583     return true;
 584 }
 585
 586 void wxMDIChildFrame::Restore()
 587 {
 588     // TODO
 589 }
 590
 591 void wxMDIChildFrame::Activate()
 592 {
 593     // TODO
 594 }
 595
 596 void wxMDIChildFrame::CaptureMouse()
 597 {
 598     wxWindow::CaptureMouse();
 599 }
 600
 601 void wxMDIChildFrame::ReleaseMouse()
 602 {
 603     wxWindow::ReleaseMouse();
 604 }
 605
 606 void wxMDIChildFrame::Raise()
 607 {
 608     wxWindow::Raise();
 609 }
 610
 611 void wxMDIChildFrame::Lower(void)
 612 {
 613     wxWindow::Raise();
 614 }
 615
 616 void wxMDIChildFrame::DoSetSizeHints(int WXUNUSED(minW), int WXUNUSED(minH), int WXUNUSED(maxW), int WXUNUSED(maxH), int WXUNUSED(incW), int WXUNUSED(incH))
 617 {
 618 }
 619
 620 // Client window
 621
 622 wxMDIClientWindow::wxMDIClientWindow()
 623 {
 624 }
 625
 626 wxMDIClientWindow::~wxMDIClientWindow()
 627 {
 628     // By the time this destructor is called, the child frames will have been
 629     // deleted and removed from the notebook/client window.
 630     DestroyChildren();
 631
 632     m_mainWidget = (WXWidget) 0;
 633 }
 634
 635 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
 636 {
 637     SetWindowStyleFlag(style);
 638
 639     bool success = wxNotebook::Create(parent, wxID_NOTEBOOK_CLIENT_AREA, wxPoint(0, 0), wxSize(100, 100), 0);
 640     if (success)
 641     {
 642         return true;
 643     }
 644     else
 645         return false;
 646 }
 647
 648 int wxMDIClientWindow::FindPage(const wxNotebookPage* page)
 649 {
 650     for (int i = GetPageCount() - 1; i >= 0; --i)
 651     {
 652         if (GetPage(i) == page)
 653             return i;
 654     }
 655
 656     return -1;
 657 }
 658
 659 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 660 {
 661     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 662 }
 663
 664 void wxMDIClientWindow::DoSetClientSize(int width, int height)
 665 {
 666     wxWindow::DoSetClientSize(width, height);
 667 }
 668
 669 void wxMDIClientWindow::DoGetClientSize(int *width, int *height) const
 670 {
 671     wxWindow::DoGetClientSize(width, height);
 672 }
 673
 674 void wxMDIClientWindow::DoGetSize(int *width, int *height) const
 675 {
 676     wxWindow::DoGetSize(width, height);
 677 }
 678
 679 void wxMDIClientWindow::DoGetPosition(int *x, int *y) const
 680 {
 681     wxWindow::DoGetPosition(x, y);
 682 }
 683
 684 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
 685 {
 686     //    Default(); // Default processing: OBSOLETE FUNCTION
 687     event.Skip();
 688 }
 689
 690 void wxMDIClientWindow::OnPageChanged(wxNotebookEvent& event)
 691 {
 692     // Notify child that it has been activated
 693     if (event.GetOldSelection() != -1)
 694     {
 695         wxMDIChildFrame* oldChild = (wxMDIChildFrame*) GetPage(event.GetOldSelection());
 696         if (oldChild)
 697         {
 698             wxActivateEvent event(wxEVT_ACTIVATE, false, oldChild->GetId());
 699             event.SetEventObject( oldChild );
 700             oldChild->HandleWindowEvent(event);
 701         }
 702     }
 703     if (event.GetSelection() != -1)
 704     {
 705         wxMDIChildFrame* activeChild = (wxMDIChildFrame*) GetPage(event.GetSelection());
 706         if (activeChild)
 707         {
 708             wxActivateEvent event(wxEVT_ACTIVATE, true, activeChild->GetId());
 709             event.SetEventObject( activeChild );
 710             activeChild->HandleWindowEvent(event);
 711
 712             if (activeChild->GetMDIParentFrame())
 713             {
 714                 activeChild->GetMDIParentFrame()->SetActiveChild(activeChild);
 715                 activeChild->GetMDIParentFrame()->SetChildMenuBar(activeChild);
 716             }
 717         }
 718     }
 719     event.Skip();
 720 }