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/module.h"
  42
  43 #include "wx/msw/private.h"
  44
  45 #include "wx/popupwin.h"
  46
  47 #ifndef ICON_BIG
  48     #define ICON_BIG 1
  49 #endif
  50
  51 #ifndef ICON_SMALL
  52     #define ICON_SMALL 0
  53 #endif
  54
  55 // ----------------------------------------------------------------------------
  56 // stubs for missing functions under MicroWindows
  57 // ----------------------------------------------------------------------------
  58
  59 #ifdef __WXMICROWIN__
  60
  61 // static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return FALSE; }
  62 static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return FALSE; }
  63
  64 #endif // __WXMICROWIN__
  65
  66 // NB: wxDlgProc must be defined here and not in dialog.cpp because the latter
  67 //     is not included by wxUniv build which does need wxDlgProc
  68 LONG APIENTRY _EXPORT
  69 wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam);
  70
  71 // ----------------------------------------------------------------------------
  72 // globals
  73 // ----------------------------------------------------------------------------
  74
  75 // list of all frames and modeless dialogs
  76 wxWindowList wxModelessWindows;
  77
  78 // the name of the default wxWindows class
  79 extern const wxChar *wxCanvasClassName;
  80
  81 // ----------------------------------------------------------------------------
  82 // wxTLWHiddenParentModule: used to manage the hidden parent window (we need a
  83 // module to ensure that the window is always deleted)
  84 // ----------------------------------------------------------------------------
  85
  86 class wxTLWHiddenParentModule : public wxModule
  87 {
  88 public:
  89     // module init/finalize
  90     virtual bool OnInit();
  91     virtual void OnExit();
  92
  93     // get the hidden window (creates on demand)
  94     static HWND GetHWND();
  95
  96 private:
  97     // the HWND of the hidden parent
  98     static HWND ms_hwnd;
  99
 100     // the class used to create it
 101     static const wxChar *ms_className;
 102
 103     DECLARE_DYNAMIC_CLASS(wxTLWHiddenParentModule)
 104 };
 105
 106 IMPLEMENT_DYNAMIC_CLASS(wxTLWHiddenParentModule, wxModule)
 107
 108 // ============================================================================
 109 // wxTopLevelWindowMSW implementation
 110 // ============================================================================
 111
 112 BEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase)
 113     EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate)
 114 END_EVENT_TABLE()
 115
 116 // ----------------------------------------------------------------------------
 117 // wxTopLevelWindowMSW creation
 118 // ----------------------------------------------------------------------------
 119
 120 void wxTopLevelWindowMSW::Init()
 121 {
 122     m_iconized =
 123     m_maximizeOnShow = FALSE;
 124
 125     // unlike (almost?) all other windows, frames are created hidden
 126     m_isShown = FALSE;
 127
 128     // Data to save/restore when calling ShowFullScreen
 129     m_fsStyle = 0;
 130     m_fsOldWindowStyle = 0;
 131     m_fsIsMaximized = FALSE;
 132     m_fsIsShowing = FALSE;
 133
 134     m_winLastFocused = (wxWindow *)NULL;
 135 }
 136
 137 WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const
 138 {
 139     // let the base class deal with the common styles but fix the ones which
 140     // don't make sense for us (we also deal with the borders ourselves)
 141     WXDWORD msflags = wxWindow::MSWGetStyle
 142                       (
 143                         (style & ~wxBORDER_MASK) | wxBORDER_NONE, exflags
 144                       ) & ~WS_CHILD;
 145
 146     // first select the kind of window being created
 147     //
 148     // note that if we don't set WS_POPUP, Windows assumes WS_OVERLAPPED and
 149     // creates a window with both caption and border, hence we also test it
 150     // below in some other cases
 151     if ( style & wxFRAME_TOOL_WINDOW )
 152         msflags |= WS_POPUP;
 153     else
 154         msflags |= WS_OVERLAPPED;
 155
 156     // border and caption styles
 157     if ( style & wxRESIZE_BORDER )
 158         msflags |= WS_THICKFRAME;
 159     else if ( !(style & wxBORDER_NONE) )
 160         msflags |= WS_BORDER;
 161     else
 162         msflags |= WS_POPUP;
 163
 164     if ( style & wxCAPTION )
 165         msflags |= WS_CAPTION;
 166     else
 167         msflags |= WS_POPUP;
 168
 169     // next translate the individual flags
 170     if ( style & wxMINIMIZE_BOX )
 171         msflags |= WS_MINIMIZEBOX;
 172     if ( style & wxMAXIMIZE_BOX )
 173         msflags |= WS_MAXIMIZEBOX;
 174     if ( style & wxSYSTEM_MENU )
 175         msflags |= WS_SYSMENU;
 176     if ( style & wxMINIMIZE )
 177         msflags |= WS_MINIMIZE;
 178     if ( style & wxMAXIMIZE )
 179         msflags |= WS_MAXIMIZE;
 180
 181     // Keep this here because it saves recoding this function in wxTinyFrame
 182 #if wxUSE_ITSY_BITSY && !defined(__WIN32__)
 183     if ( style & wxTINY_CAPTION_VERT )
 184         msflags |= IBS_VERTCAPTION;
 185     if ( style & wxTINY_CAPTION_HORIZ )
 186         msflags |= IBS_HORZCAPTION;
 187 #else
 188     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 189         msflags |= WS_CAPTION;
 190 #endif
 191
 192     if ( exflags )
 193     {
 194 #if !defined(__WIN16__) && !defined(__SC__)
 195         if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) )
 196         {
 197             if ( style & wxFRAME_TOOL_WINDOW )
 198             {
 199                 // create the palette-like window
 200                 *exflags |= WS_EX_TOOLWINDOW;
 201             }
 202
 203             // We have to solve 2 different problems here:
 204             //
 205             // 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the
 206             //    taskbar even if they don't have a parent
 207             //
 208             // 2. frames without this style should appear in the taskbar even
 209             //    if they're owned (Windows only puts non owned windows into
 210             //    the taskbar normally)
 211             //
 212             // The second one is solved here by using WS_EX_APPWINDOW flag, the
 213             // first one is dealt with in our MSWGetParent() method
 214             // implementation
 215             if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() )
 216             {
 217                 // need to force the frame to appear in the taskbar
 218                 *exflags |= WS_EX_APPWINDOW;
 219             }
 220             //else: nothing to do [here]
 221         }
 222 #endif // !Win16
 223
 224         if ( style & wxSTAY_ON_TOP )
 225             *exflags |= WS_EX_TOPMOST;
 226
 227 #ifdef __WIN32__
 228         if ( GetExtraStyle() & wxFRAME_EX_CONTEXTHELP )
 229             *exflags |= WS_EX_CONTEXTHELP;
 230 #endif // __WIN32__
 231     }
 232
 233     return msflags;
 234 }
 235
 236 WXHWND wxTopLevelWindowMSW::MSWGetParent() const
 237 {
 238     // for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL
 239     // parent HWND or it would be always on top of its parent which is not what
 240     // we usually want (in fact, we only want it for frames with the
 241     // wxFRAME_FLOAT_ON_PARENT flag)
 242     HWND hwndParent = NULL;
 243     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 244     {
 245         const wxWindow *parent = GetParent();
 246
 247         if ( !parent )
 248         {
 249             // this flag doesn't make sense then and will be ignored
 250             wxFAIL_MSG( _T("wxFRAME_FLOAT_ON_PARENT but no parent?") );
 251         }
 252         else
 253         {
 254             hwndParent = GetHwndOf(parent);
 255         }
 256     }
 257     //else: don't float on parent, must not be owned
 258
 259     // now deal with the 2nd taskbar-related problem (see comments above in
 260     // MSWGetStyle())
 261     if ( HasFlag(wxFRAME_NO_TASKBAR) && !hwndParent )
 262     {
 263         // use hidden parent
 264         hwndParent = wxTLWHiddenParentModule::GetHWND();
 265     }
 266
 267     return (WXHWND)hwndParent;
 268 }
 269
 270 bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
 271                                        const wxString& title,
 272                                        const wxPoint& pos,
 273                                        const wxSize& size)
 274 {
 275 #ifdef __WXMICROWIN__
 276     // no dialogs support under MicroWin yet
 277     return CreateFrame(title, pos, size);
 278 #else // !__WXMICROWIN__
 279     wxWindow *parent = GetParent();
 280
 281     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 282     // app window as parent - this avoids creating modal dialogs without
 283     // parent
 284     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 285     {
 286         parent = wxTheApp->GetTopWindow();
 287
 288         if ( parent )
 289         {
 290             // don't use transient windows as parents, this is dangerous as it
 291             // can lead to a crash if the parent is destroyed before the child
 292             //
 293             // also don't use the window which is currently hidden as then the
 294             // dialog would be hidden as well
 295             if ( (parent->GetExtraStyle() & wxWS_EX_TRANSIENT) ||
 296                     !parent->IsShown() )
 297             {
 298                 parent = NULL;
 299             }
 300         }
 301     }
 302
 303     m_hWnd = (WXHWND)::CreateDialogIndirect
 304                        (
 305                         wxGetInstance(),
 306                         (DLGTEMPLATE*)dlgTemplate,
 307                         parent ? GetHwndOf(parent) : NULL,
 308                         (DLGPROC)wxDlgProc
 309                        );
 310
 311     if ( !m_hWnd )
 312     {
 313         wxFAIL_MSG(_("Failed to create dialog. Incorrect DLGTEMPLATE?"));
 314
 315         wxLogSysError(_("Can't create dialog using memory template"));
 316
 317         return FALSE;
 318     }
 319
 320     WXDWORD exflags;
 321     (void)MSWGetCreateWindowFlags(&exflags);
 322
 323     if ( exflags )
 324     {
 325         ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags);
 326         ::SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 327                        SWP_NOSIZE |
 328                        SWP_NOMOVE |
 329                        SWP_NOZORDER |
 330                        SWP_NOACTIVATE);
 331     }
 332
 333 #if defined(__WIN95__)
 334     // For some reason, the system menu is activated when we use the
 335     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 336     if ( exflags & WS_EX_CONTEXTHELP )
 337     {
 338         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 339         if ( winTop )
 340         {
 341             wxIcon icon = winTop->GetIcon();
 342             if ( icon.Ok() )
 343             {
 344                 ::SendMessage(GetHwnd(), WM_SETICON,
 345                               (WPARAM)TRUE,
 346                               (LPARAM)GetHiconOf(icon));
 347             }
 348         }
 349     }
 350 #endif // __WIN95__
 351
 352     // move the dialog to its initial position without forcing repainting
 353     int x, y, w, h;
 354     if ( !MSWGetCreateWindowCoords(pos, size, x, y, w, h) )
 355     {
 356         x =
 357         w = (int)CW_USEDEFAULT;
 358     }
 359
 360     // we can't use CW_USEDEFAULT here as we're not calling CreateWindow()
 361     // and passing CW_USEDEFAULT to MoveWindow() results in resizing the
 362     // window to (0, 0) size which breaks quite a lot of things, e.g. the
 363     // sizer calculation in wxSizer::Fit()
 364     if ( w == (int)CW_USEDEFAULT )
 365     {
 366         // the exact number doesn't matter, the dialog will be resized
 367         // again soon anyhow but it should be big enough to allow
 368         // calculation relying on "totalSize - clientSize > 0" work, i.e.
 369         // at least greater than the title bar height
 370         w =
 371         h = 100;
 372     }
 373
 374     if ( x == (int)CW_USEDEFAULT )
 375     {
 376         // centre it on the screen - what else can we do?
 377         wxSize sizeDpy = wxGetDisplaySize();
 378
 379         x = (sizeDpy.x - w) / 2;
 380         y = (sizeDpy.y - h) / 2;
 381     }
 382
 383     if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 384     {
 385         wxLogLastError(wxT("MoveWindow"));
 386     }
 387
 388     if ( !title.empty() )
 389     {
 390         ::SetWindowText(GetHwnd(), title);
 391     }
 392
 393     SubclassWin(m_hWnd);
 394
 395     return TRUE;
 396 #endif // __WXMICROWIN__/!__WXMICROWIN__
 397 }
 398
 399 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 400                                       const wxPoint& pos,
 401                                       const wxSize& size)
 402 {
 403     WXDWORD exflags;
 404     WXDWORD flags = MSWGetCreateWindowFlags(&exflags);
 405
 406     return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags);
 407 }
 408
 409 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 410                                  wxWindowID id,
 411                                  const wxString& title,
 412                                  const wxPoint& pos,
 413                                  const wxSize& size,
 414                                  long style,
 415                                  const wxString& name)
 416 {
 417     // init our fields
 418     Init();
 419
 420     m_windowStyle = style;
 421
 422     SetName(name);
 423
 424     m_windowId = id == -1 ? NewControlId() : id;
 425
 426     wxTopLevelWindows.Append(this);
 427
 428     if ( parent )
 429         parent->AddChild(this);
 430
 431     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 432     {
 433         // we have different dialog templates to allows creation of dialogs
 434         // with & without captions under MSWindows, resizeable or not (but a
 435         // resizeable dialog always has caption - otherwise it would look too
 436         // strange)
 437
 438         // we need 3 additional WORDs for dialog menu, class and title (as we
 439         // don't use DS_SETFONT we don't need the fourth WORD for the font)
 440         static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3);
 441         DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize);
 442         memset(dlgTemplate, 0, dlgsize);
 443
 444         // these values are arbitrary, they won't be used normally anyhow
 445         dlgTemplate->x  = 34;
 446         dlgTemplate->y  = 22;
 447         dlgTemplate->cx = 144;
 448         dlgTemplate->cy = 75;
 449
 450         // reuse the code in MSWGetStyle() but correct the results slightly for
 451         // the dialog
 452         dlgTemplate->style = MSWGetStyle(style, NULL);
 453
 454         // all dialogs are popups
 455         dlgTemplate->style |= WS_POPUP;
 456
 457         // force 3D-look if necessary, it looks impossibly ugly otherwise
 458         if ( style & (wxRESIZE_BORDER | wxCAPTION) )
 459             dlgTemplate->style |= DS_MODALFRAME;
 460
 461         bool ret = CreateDialog(dlgTemplate, title, pos, size);
 462         free(dlgTemplate);
 463
 464         return ret;
 465     }
 466     else // !dialog
 467     {
 468         return CreateFrame(title, pos, size);
 469     }
 470 }
 471
 472 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 473 {
 474     if ( wxModelessWindows.Find(this) )
 475         wxModelessWindows.DeleteObject(this);
 476
 477     // after destroying an owned window, Windows activates the next top level
 478     // window in Z order but it may be different from our owner (to reproduce
 479     // this simply Alt-TAB to another application and back before closing the
 480     // owned frame) whereas we always want to yield activation to our parent
 481     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 482     {
 483         wxWindow *parent = GetParent();
 484         if ( parent )
 485         {
 486             ::BringWindowToTop(GetHwndOf(parent));
 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
 799 // ============================================================================
 800 // wxTLWHiddenParentModule implementation
 801 // ============================================================================
 802
 803 HWND wxTLWHiddenParentModule::ms_hwnd = NULL;
 804
 805 const wxChar *wxTLWHiddenParentModule::ms_className = NULL;
 806
 807 bool wxTLWHiddenParentModule::OnInit()
 808 {
 809     ms_hwnd = NULL;
 810     ms_className = NULL;
 811
 812     return TRUE;
 813 }
 814
 815 void wxTLWHiddenParentModule::OnExit()
 816 {
 817     if ( ms_hwnd )
 818     {
 819         if ( !::DestroyWindow(ms_hwnd) )
 820         {
 821             wxLogLastError(_T("DestroyWindow(hidden TLW parent)"));
 822         }
 823
 824         ms_hwnd = NULL;
 825     }
 826
 827     if ( ms_className )
 828     {
 829         if ( !::UnregisterClass(ms_className, wxGetInstance()) )
 830         {
 831             wxLogLastError(_T("UnregisterClass(\"wxTLWHiddenParent\")"));
 832         }
 833
 834         ms_className = NULL;
 835     }
 836 }
 837
 838 /* static */
 839 HWND wxTLWHiddenParentModule::GetHWND()
 840 {
 841     if ( !ms_hwnd )
 842     {
 843         if ( !ms_className )
 844         {
 845             static const wxChar *HIDDEN_PARENT_CLASS = _T("wxTLWHiddenParent");
 846
 847             WNDCLASS wndclass;
 848             wxZeroMemory(wndclass);
 849
 850             wndclass.lpfnWndProc   = DefWindowProc;
 851             wndclass.hInstance     = wxGetInstance();
 852             wndclass.lpszClassName = HIDDEN_PARENT_CLASS;
 853
 854             if ( !::RegisterClass(&wndclass) )
 855             {
 856                 wxLogLastError(_T("RegisterClass(\"wxTLWHiddenParent\")"));
 857             }
 858             else
 859             {
 860                 ms_className = HIDDEN_PARENT_CLASS;
 861             }
 862         }
 863
 864         ms_hwnd = ::CreateWindow(ms_className, _T(""), 0, 0, 0, 0, 0, NULL,
 865                                  (HMENU)NULL, wxGetInstance(), NULL);
 866         if ( !ms_hwnd )
 867         {
 868             wxLogLastError(_T("CreateWindow(hidden TLW parent)"));
 869         }
 870     }
 871
 872     return ms_hwnd;
 873 }
 874