src/msw/toplevel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/toplevel.cpp
   3 // Purpose:     implements wxTopLevelWindow for MSW
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     24.09.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
   9 // License:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "toplevel.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/app.h"
  33     #include "wx/toplevel.h"
  34     #include "wx/string.h"
  35     #include "wx/log.h"
  36     #include "wx/intl.h"
  37     #include "wx/frame.h"
  38 #endif //WX_PRECOMP
  39
  40 #include "wx/msw/private.h"
  41
  42 #include "wx/popupwin.h"
  43
  44 #ifndef ICON_BIG
  45     #define ICON_BIG 1
  46 #endif
  47
  48 #ifndef ICON_SMALL
  49     #define ICON_SMALL 0
  50 #endif
  51
  52 // ----------------------------------------------------------------------------
  53 // stubs for missing functions under MicroWindows
  54 // ----------------------------------------------------------------------------
  55
  56 #ifdef __WXMICROWIN__
  57
  58 // static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return FALSE; }
  59 static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return FALSE; }
  60
  61 #endif // __WXMICROWIN__
  62
  63 // ----------------------------------------------------------------------------
  64 // globals
  65 // ----------------------------------------------------------------------------
  66
  67 // list of all frames and modeless dialogs
  68 wxWindowList wxModelessWindows;
  69
  70 // the name of the default wxWindows class
  71 extern const wxChar *wxCanvasClassName;
  72
  73 // the hidden parent for wxFRAME_NO_TASKBAR unowned frames
  74 wxWindow *wxTopLevelWindowMSW::ms_hiddenParent = NULL;
  75
  76 // ============================================================================
  77 // wxTopLevelWindowMSW implementation
  78 // ============================================================================
  79
  80 BEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase)
  81     EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate)
  82 END_EVENT_TABLE()
  83
  84 // ----------------------------------------------------------------------------
  85 // wxDialog helpers
  86 // ----------------------------------------------------------------------------
  87
  88 // Dialog window proc
  89 LONG APIENTRY _EXPORT
  90 wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
  91 {
  92     switch ( message )
  93     {
  94         case WM_INITDIALOG:
  95             // for this message, returning TRUE tells system to set focus to
  96             // the first control in the dialog box, but as we set the focus
  97             // ourselves, we return FALSE from here as well, so fall through
  98
  99         default:
 100             // for all the other ones, FALSE means that we didn't process the
 101             // message
 102             return FALSE;
 103     }
 104 }
 105
 106 // ----------------------------------------------------------------------------
 107 // wxTopLevelWindowMSW creation
 108 // ----------------------------------------------------------------------------
 109
 110 void wxTopLevelWindowMSW::Init()
 111 {
 112     m_iconized =
 113     m_maximizeOnShow = FALSE;
 114
 115     // unlike (almost?) all other windows, frames are created hidden
 116     m_isShown = FALSE;
 117
 118     // Data to save/restore when calling ShowFullScreen
 119     m_fsStyle = 0;
 120     m_fsOldWindowStyle = 0;
 121     m_fsIsMaximized = FALSE;
 122     m_fsIsShowing = FALSE;
 123
 124     m_winLastFocused = (wxWindow *)NULL;
 125 }
 126
 127 WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const
 128 {
 129     // let the base class deal with the common styles but fix the ones which
 130     // don't make sense for us (we also deal with the borders ourselves)
 131     WXDWORD msflags = wxWindow::MSWGetStyle
 132                       (
 133                         (style & ~wxBORDER_MASK) | wxBORDER_NONE, exflags
 134                       ) & ~WS_CHILD;
 135
 136     // first select the kind of window being created
 137     //
 138     // note that if we don't set WS_POPUP, Windows assumes WS_OVERLAPPED and
 139     // creates a window with both caption and border, hence we also test it
 140     // below in some other cases
 141     if ( style & wxFRAME_TOOL_WINDOW )
 142         msflags |= WS_POPUP;
 143     else
 144         msflags |= WS_OVERLAPPED;
 145
 146     // border and caption styles
 147     if ( style & wxRESIZE_BORDER )
 148         msflags |= WS_THICKFRAME;
 149     else if ( !(style & wxBORDER_NONE) )
 150         msflags |= WS_BORDER;
 151     else
 152         msflags |= WS_POPUP;
 153
 154     if ( style & wxCAPTION )
 155         msflags |= WS_CAPTION;
 156     else
 157         msflags |= WS_POPUP;
 158
 159     // next translate the individual flags
 160     if ( style & wxMINIMIZE_BOX )
 161         msflags |= WS_MINIMIZEBOX;
 162     if ( style & wxMAXIMIZE_BOX )
 163         msflags |= WS_MAXIMIZEBOX;
 164     if ( style & wxSYSTEM_MENU )
 165         msflags |= WS_SYSMENU;
 166     if ( style & wxMINIMIZE )
 167         msflags |= WS_MINIMIZE;
 168     if ( style & wxMAXIMIZE )
 169         msflags |= WS_MAXIMIZE;
 170
 171     // Keep this here because it saves recoding this function in wxTinyFrame
 172 #if wxUSE_ITSY_BITSY && !defined(__WIN32__)
 173     if ( style & wxTINY_CAPTION_VERT )
 174         msflags |= IBS_VERTCAPTION;
 175     if ( style & wxTINY_CAPTION_HORIZ )
 176         msflags |= IBS_HORZCAPTION;
 177 #else
 178     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 179         msflags |= WS_CAPTION;
 180 #endif
 181
 182     if ( exflags )
 183     {
 184 #if !defined(__WIN16__) && !defined(__SC__)
 185         if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) )
 186         {
 187             if ( style & wxFRAME_TOOL_WINDOW )
 188             {
 189                 // create the palette-like window
 190                 *exflags |= WS_EX_TOOLWINDOW;
 191             }
 192
 193             // We have to solve 2 different problems here:
 194             //
 195             // 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the
 196             //    taskbar even if they don't have a parent
 197             //
 198             // 2. frames without this style should appear in the taskbar even
 199             //    if they're owned (Windows only puts non owned windows into
 200             //    the taskbar normally)
 201             //
 202             // The second one is solved here by using WS_EX_APPWINDOW flag, the
 203             // first one is dealt with in our MSWGetParent() method
 204             // implementation
 205             if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() )
 206             {
 207                 // need to force the frame to appear in the taskbar
 208                 *exflags |= WS_EX_APPWINDOW;
 209             }
 210             //else: nothing to do [here]
 211         }
 212 #endif // !Win16
 213
 214         if ( style & wxSTAY_ON_TOP )
 215             *exflags |= WS_EX_TOPMOST;
 216
 217 #ifdef __WIN32__
 218         if ( GetExtraStyle() & wxFRAME_EX_CONTEXTHELP )
 219             *exflags |= WS_EX_CONTEXTHELP;
 220 #endif // __WIN32__
 221     }
 222
 223     return msflags;
 224 }
 225
 226 WXHWND wxTopLevelWindowMSW::MSWGetParent() const
 227 {
 228     // for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL
 229     // parent HWND or it would be always on top of its parent which is not what
 230     // we usually want (in fact, we only want it for frames with the
 231     // wxFRAME_FLOAT_ON_PARENT flag)
 232     wxWindow *parent;
 233     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 234     {
 235         parent = GetParent();
 236
 237         // this flag doesn't make sense then and will be ignored
 238         wxASSERT_MSG( parent,
 239                       _T("wxFRAME_FLOAT_ON_PARENT but no parent?") );
 240     }
 241     else // don't float on parent, must not be owned
 242     {
 243         parent = NULL;
 244     }
 245
 246     // now deal with the 2nd taskbar-related problem (see comments above in
 247     // MSWGetStyle())
 248     if ( HasFlag(wxFRAME_NO_TASKBAR) && !parent )
 249     {
 250         if ( !ms_hiddenParent )
 251         {
 252             ms_hiddenParent = new wxTopLevelWindowMSW(NULL, -1, _T(""));
 253
 254             // we shouldn't leave it in wxTopLevelWindows or we wouldn't
 255             // terminate the app when the last user-created frame is deleted --
 256             // see ~wxTopLevelWindowMSW
 257             wxTopLevelWindows.DeleteObject(ms_hiddenParent);
 258         }
 259
 260         parent = ms_hiddenParent;
 261     }
 262
 263     return parent ? parent->GetHWND() : NULL;
 264 }
 265
 266 bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
 267                                        const wxString& title,
 268                                        const wxPoint& pos,
 269                                        const wxSize& size)
 270 {
 271 #ifdef __WXMICROWIN__
 272     // no dialogs support under MicroWin yet
 273     return CreateFrame(title, pos, size);
 274 #else // !__WXMICROWIN__
 275     wxWindow *parent = GetParent();
 276
 277     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 278     // app window as parent - this avoids creating modal dialogs without
 279     // parent
 280     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 281     {
 282         parent = wxTheApp->GetTopWindow();
 283
 284         if ( parent )
 285         {
 286             // don't use transient windows as parents, this is dangerous as it
 287             // can lead to a crash if the parent is destroyed before the child
 288             //
 289             // also don't use the window which is currently hidden as then the
 290             // dialog would be hidden as well
 291             if ( (parent->GetExtraStyle() & wxWS_EX_TRANSIENT) ||
 292                     !parent->IsShown() )
 293             {
 294                 parent = NULL;
 295             }
 296         }
 297     }
 298
 299     m_hWnd = (WXHWND)::CreateDialogIndirect
 300                        (
 301                         wxGetInstance(),
 302                         (DLGTEMPLATE*)dlgTemplate,
 303                         parent ? GetHwndOf(parent) : NULL,
 304                         (DLGPROC)wxDlgProc
 305                        );
 306
 307     if ( !m_hWnd )
 308     {
 309         wxFAIL_MSG(_("Failed to create dialog. Incorrect DLGTEMPLATE?"));
 310
 311         wxLogSysError(_("Can't create dialog using memory template"));
 312
 313         return FALSE;
 314     }
 315
 316     WXDWORD exflags;
 317     (void)MSWGetCreateWindowFlags(&exflags);
 318
 319     if ( exflags )
 320     {
 321         ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags);
 322         ::SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 323                        SWP_NOSIZE |
 324                        SWP_NOMOVE |
 325                        SWP_NOZORDER |
 326                        SWP_NOACTIVATE);
 327     }
 328
 329 #if defined(__WIN95__)
 330     // For some reason, the system menu is activated when we use the
 331     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 332     if ( exflags & WS_EX_CONTEXTHELP )
 333     {
 334         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 335         if ( winTop )
 336         {
 337             wxIcon icon = winTop->GetIcon();
 338             if ( icon.Ok() )
 339             {
 340                 ::SendMessage(GetHwnd(), WM_SETICON,
 341                               (WPARAM)TRUE,
 342                               (LPARAM)GetHiconOf(icon));
 343             }
 344         }
 345     }
 346 #endif // __WIN95__
 347
 348     // move the dialog to its initial position without forcing repainting
 349     int x, y, w, h;
 350     if ( !MSWGetCreateWindowCoords(pos, size, x, y, w, h) )
 351     {
 352         x =
 353         w = (int)CW_USEDEFAULT;
 354     }
 355
 356     // we can't use CW_USEDEFAULT here as we're not calling CreateWindow()
 357     // and passing CW_USEDEFAULT to MoveWindow() results in resizing the
 358     // window to (0, 0) size which breaks quite a lot of things, e.g. the
 359     // sizer calculation in wxSizer::Fit()
 360     if ( w == (int)CW_USEDEFAULT )
 361     {
 362         // the exact number doesn't matter, the dialog will be resized
 363         // again soon anyhow but it should be big enough to allow
 364         // calculation relying on "totalSize - clientSize > 0" work, i.e.
 365         // at least greater than the title bar height
 366         w =
 367         h = 100;
 368     }
 369
 370     if ( x == (int)CW_USEDEFAULT )
 371     {
 372         // centre it on the screen - what else can we do?
 373         wxSize sizeDpy = wxGetDisplaySize();
 374
 375         x = (sizeDpy.x - w) / 2;
 376         y = (sizeDpy.y - h) / 2;
 377     }
 378
 379     if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 380     {
 381         wxLogLastError(wxT("MoveWindow"));
 382     }
 383
 384     if ( !title.empty() )
 385     {
 386         ::SetWindowText(GetHwnd(), title);
 387     }
 388
 389     SubclassWin(m_hWnd);
 390
 391     return TRUE;
 392 #endif // __WXMICROWIN__/!__WXMICROWIN__
 393 }
 394
 395 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 396                                       const wxPoint& pos,
 397                                       const wxSize& size)
 398 {
 399     WXDWORD exflags;
 400     WXDWORD flags = MSWGetCreateWindowFlags(&exflags);
 401
 402     return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags);
 403 }
 404
 405 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 406                                  wxWindowID id,
 407                                  const wxString& title,
 408                                  const wxPoint& pos,
 409                                  const wxSize& size,
 410                                  long style,
 411                                  const wxString& name)
 412 {
 413     // init our fields
 414     Init();
 415
 416     m_windowStyle = style;
 417
 418     SetName(name);
 419
 420     m_windowId = id == -1 ? NewControlId() : id;
 421
 422     wxTopLevelWindows.Append(this);
 423
 424     if ( parent )
 425         parent->AddChild(this);
 426
 427     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 428     {
 429         // we have different dialog templates to allows creation of dialogs
 430         // with & without captions under MSWindows, resizeable or not (but a
 431         // resizeable dialog always has caption - otherwise it would look too
 432         // strange)
 433
 434         // we need 3 additional WORDs for dialog menu, class and title (as we
 435         // don't use DS_SETFONT we don't need the fourth WORD for the font)
 436         static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3);
 437         DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize);
 438         memset(dlgTemplate, 0, dlgsize);
 439
 440         // these values are arbitrary, they won't be used normally anyhow
 441         dlgTemplate->x  = 34;
 442         dlgTemplate->y  = 22;
 443         dlgTemplate->cx = 144;
 444         dlgTemplate->cy = 75;
 445
 446         // reuse the code in MSWGetStyle() but correct the results slightly for
 447         // the dialog
 448         dlgTemplate->style = MSWGetStyle(style, NULL);
 449
 450         // all dialogs are popups
 451         dlgTemplate->style |= WS_POPUP;
 452
 453         // force 3D-look if necessary, it looks impossibly ugly otherwise
 454         if ( style & (wxRESIZE_BORDER | wxCAPTION) )
 455             dlgTemplate->style |= DS_MODALFRAME;
 456
 457         bool ret = CreateDialog(dlgTemplate, title, pos, size);
 458         free(dlgTemplate);
 459
 460         return ret;
 461     }
 462     else // !dialog
 463     {
 464         return CreateFrame(title, pos, size);
 465     }
 466 }
 467
 468 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 469 {
 470     if ( this == ms_hiddenParent )
 471     {
 472         // stop [infinite] recursion which would otherwise happen when we do
 473         // "delete ms_hiddenParent" below
 474         return;
 475     }
 476
 477     wxTopLevelWindows.DeleteObject(this);
 478
 479     if ( wxModelessWindows.Find(this) )
 480         wxModelessWindows.DeleteObject(this);
 481
 482     // after destroying an owned window, Windows activates the next top level
 483     // window in Z order but it may be different from our owner (to reproduce
 484     // this simply Alt-TAB to another application and back before closing the
 485     // owned frame) whereas we always want to yield activation to our parent
 486     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 487     {
 488         wxWindow *parent = GetParent();
 489         if ( parent )
 490         {
 491             ::BringWindowToTop(GetHwndOf(parent));
 492         }
 493     }
 494
 495     // If this is the last top-level window, exit.
 496     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
 497     {
 498         if ( ms_hiddenParent )
 499         {
 500             delete ms_hiddenParent;
 501             ms_hiddenParent = NULL;
 502         }
 503
 504         wxTheApp->SetTopWindow(NULL);
 505
 506         if ( wxTheApp->GetExitOnFrameDelete() )
 507         {
 508             ::PostQuitMessage(0);
 509         }
 510     }
 511 }
 512
 513 // ----------------------------------------------------------------------------
 514 // wxTopLevelWindowMSW showing
 515 // ----------------------------------------------------------------------------
 516
 517 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 518 {
 519     ::ShowWindow(GetHwnd(), nShowCmd);
 520
 521     m_iconized = nShowCmd == SW_MINIMIZE;
 522 }
 523
 524 bool wxTopLevelWindowMSW::Show(bool show)
 525 {
 526     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 527     if ( !wxWindowBase::Show(show) )
 528         return FALSE;
 529
 530     int nShowCmd;
 531     if ( show )
 532     {
 533         if ( m_maximizeOnShow )
 534         {
 535             // show and maximize
 536             nShowCmd = SW_MAXIMIZE;
 537
 538             m_maximizeOnShow = FALSE;
 539         }
 540         else // just show
 541         {
 542             nShowCmd = SW_SHOW;
 543         }
 544     }
 545     else // hide
 546     {
 547         nShowCmd = SW_HIDE;
 548     }
 549
 550     DoShowWindow(nShowCmd);
 551
 552     if ( show )
 553     {
 554         ::BringWindowToTop(GetHwnd());
 555
 556         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 557         event.SetEventObject( this );
 558         GetEventHandler()->ProcessEvent(event);
 559     }
 560     else // hide
 561     {
 562         // Try to highlight the correct window (the parent)
 563         if ( GetParent() )
 564         {
 565             HWND hWndParent = GetHwndOf(GetParent());
 566             if (hWndParent)
 567                 ::BringWindowToTop(hWndParent);
 568         }
 569     }
 570
 571     return TRUE;
 572 }
 573
 574 // ----------------------------------------------------------------------------
 575 // wxTopLevelWindowMSW maximize/minimize
 576 // ----------------------------------------------------------------------------
 577
 578 void wxTopLevelWindowMSW::Maximize(bool maximize)
 579 {
 580     if ( IsShown() )
 581     {
 582         // just maximize it directly
 583         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 584     }
 585     else // hidden
 586     {
 587         // we can't maximize the hidden frame because it shows it as well, so
 588         // just remember that we should do it later in this case
 589         m_maximizeOnShow = TRUE;
 590     }
 591 }
 592
 593 bool wxTopLevelWindowMSW::IsMaximized() const
 594 {
 595     return ::IsZoomed(GetHwnd()) != 0;
 596 }
 597
 598 void wxTopLevelWindowMSW::Iconize(bool iconize)
 599 {
 600     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 601 }
 602
 603 bool wxTopLevelWindowMSW::IsIconized() const
 604 {
 605     // also update the current state
 606     ((wxTopLevelWindowMSW *)this)->m_iconized = ::IsIconic(GetHwnd()) != 0;
 607
 608     return m_iconized;
 609 }
 610
 611 void wxTopLevelWindowMSW::Restore()
 612 {
 613     DoShowWindow(SW_RESTORE);
 614 }
 615
 616 // ----------------------------------------------------------------------------
 617 // wxTopLevelWindowMSW fullscreen
 618 // ----------------------------------------------------------------------------
 619
 620 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 621 {
 622     if (show)
 623     {
 624         if (IsFullScreen())
 625             return FALSE;
 626
 627         m_fsIsShowing = TRUE;
 628         m_fsStyle = style;
 629
 630         // zap the frame borders
 631
 632         // save the 'normal' window style
 633         m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE);
 634
 635         // save the old position, width & height, maximize state
 636         m_fsOldSize = GetRect();
 637         m_fsIsMaximized = IsMaximized();
 638
 639         // decide which window style flags to turn off
 640         LONG newStyle = m_fsOldWindowStyle;
 641         LONG offFlags = 0;
 642
 643         if (style & wxFULLSCREEN_NOBORDER)
 644             offFlags |= WS_BORDER | WS_THICKFRAME;
 645         if (style & wxFULLSCREEN_NOCAPTION)
 646             offFlags |= (WS_CAPTION | WS_SYSMENU);
 647
 648         newStyle &= (~offFlags);
 649
 650         // change our window style to be compatible with full-screen mode
 651         ::SetWindowLong((HWND)GetHWND(), GWL_STYLE, newStyle);
 652
 653         // resize to the size of the desktop
 654         int width, height;
 655
 656         RECT rect = wxGetWindowRect(::GetDesktopWindow());
 657         width = rect.right - rect.left;
 658         height = rect.bottom - rect.top;
 659
 660         SetSize(width, height);
 661
 662         // now flush the window style cache and actually go full-screen
 663         SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
 664
 665         wxSizeEvent event(wxSize(width, height), GetId());
 666         GetEventHandler()->ProcessEvent(event);
 667
 668         return TRUE;
 669     }
 670     else
 671     {
 672         if (!IsFullScreen())
 673             return FALSE;
 674
 675         m_fsIsShowing = FALSE;
 676
 677         Maximize(m_fsIsMaximized);
 678         SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle);
 679         SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 680             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 681
 682         return TRUE;
 683     }
 684 }
 685
 686 // ----------------------------------------------------------------------------
 687 // wxTopLevelWindowMSW misc
 688 // ----------------------------------------------------------------------------
 689
 690 void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon)
 691 {
 692     SetIcons( wxIconBundle( icon ) );
 693 }
 694
 695 void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons)
 696 {
 697     wxTopLevelWindowBase::SetIcons(icons);
 698
 699 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 700     const wxIcon& sml = icons.GetIcon( wxSize( 16, 16 ) );
 701     if( sml.Ok() && sml.GetWidth() == 16 && sml.GetHeight() == 16 )
 702     {
 703         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_SMALL,
 704                        (LPARAM)GetHiconOf(sml) );
 705     }
 706
 707     const wxIcon& big = icons.GetIcon( wxSize( 32, 32 ) );
 708     if( big.Ok() && big.GetWidth() == 32 && big.GetHeight() == 32 )
 709     {
 710         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_BIG,
 711                        (LPARAM)GetHiconOf(big) );
 712     }
 713 #endif // __WIN95__
 714 }
 715
 716 bool wxTopLevelWindowMSW::EnableCloseButton(bool enable)
 717 {
 718 #ifndef __WXMICROWIN__
 719     // get system (a.k.a. window) menu
 720     HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE /* get it */);
 721     if ( !hmenu )
 722     {
 723         wxLogLastError(_T("GetSystemMenu"));
 724
 725         return FALSE;
 726     }
 727
 728     // enabling/disabling the close item from it also automatically
 729     // disables/enables the close title bar button
 730     if ( ::EnableMenuItem(hmenu, SC_CLOSE,
 731                           MF_BYCOMMAND |
 732                           (enable ? MF_ENABLED : MF_GRAYED)) == -1 )
 733     {
 734         wxLogLastError(_T("EnableMenuItem(SC_CLOSE)"));
 735
 736         return FALSE;
 737     }
 738
 739     // update appearance immediately
 740     if ( !::DrawMenuBar(GetHwnd()) )
 741     {
 742         wxLogLastError(_T("DrawMenuBar"));
 743     }
 744 #endif // !__WXMICROWIN__
 745
 746     return TRUE;
 747 }
 748
 749 // ----------------------------------------------------------------------------
 750 // wxTopLevelWindow event handling
 751 // ----------------------------------------------------------------------------
 752
 753 // Default activation behaviour - set the focus for the first child
 754 // subwindow found.
 755 void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
 756 {
 757     if ( event.GetActive() )
 758     {
 759         // restore focus to the child which was last focused
 760         wxLogTrace(_T("focus"), _T("wxTLW %08x activated."), m_hWnd);
 761
 762         wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent()
 763                                             : NULL;
 764         if ( !parent )
 765         {
 766             parent = this;
 767         }
 768
 769         wxSetFocusToChild(parent, &m_winLastFocused);
 770     }
 771     else // deactivating
 772     {
 773         // remember the last focused child if it is our child
 774         m_winLastFocused = FindFocus();
 775
 776         // so we NULL it out if it's a child from some other frame
 777         wxWindow *win = m_winLastFocused;
 778         while ( win )
 779         {
 780             if ( win->IsTopLevel() )
 781             {
 782                 if ( win != this )
 783                 {
 784                     m_winLastFocused = NULL;
 785                 }
 786
 787                 break;
 788             }
 789
 790             win = win->GetParent();
 791         }
 792
 793         wxLogTrace(_T("focus"),
 794                    _T("wxTLW %08x deactivated, last focused: %08x."),
 795                    m_hWnd,
 796                    m_winLastFocused ? GetHwndOf(m_winLastFocused)
 797                                     : NULL);
 798
 799         event.Skip();
 800     }
 801 }
 802