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