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(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?"));
 314
 315         wxLogSysError(wxT("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            if ( GetWindowStyle() & wxFRAME_TOOL_WINDOW )
 521                nShowCmd = SW_SHOWNA;
 522            else
 523                nShowCmd = SW_SHOW;
 524         }
 525     }
 526     else // hide
 527     {
 528         nShowCmd = SW_HIDE;
 529     }
 530
 531     DoShowWindow(nShowCmd);
 532
 533     if ( show )
 534     {
 535         ::BringWindowToTop(GetHwnd());
 536
 537         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 538         event.SetEventObject( this );
 539         GetEventHandler()->ProcessEvent(event);
 540     }
 541     else // hide
 542     {
 543         // Try to highlight the correct window (the parent)
 544         if ( GetParent() )
 545         {
 546             HWND hWndParent = GetHwndOf(GetParent());
 547             if (hWndParent)
 548                 ::BringWindowToTop(hWndParent);
 549         }
 550     }
 551
 552     return TRUE;
 553 }
 554
 555 // ----------------------------------------------------------------------------
 556 // wxTopLevelWindowMSW maximize/minimize
 557 // ----------------------------------------------------------------------------
 558
 559 void wxTopLevelWindowMSW::Maximize(bool maximize)
 560 {
 561     if ( IsShown() )
 562     {
 563         // just maximize it directly
 564         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 565     }
 566     else // hidden
 567     {
 568         // we can't maximize the hidden frame because it shows it as well, so
 569         // just remember that we should do it later in this case
 570         m_maximizeOnShow = maximize;
 571     }
 572 }
 573
 574 bool wxTopLevelWindowMSW::IsMaximized() const
 575 {
 576     return ::IsZoomed(GetHwnd()) != 0;
 577 }
 578
 579 void wxTopLevelWindowMSW::Iconize(bool iconize)
 580 {
 581     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 582 }
 583
 584 bool wxTopLevelWindowMSW::IsIconized() const
 585 {
 586     // also update the current state
 587     ((wxTopLevelWindowMSW *)this)->m_iconized = ::IsIconic(GetHwnd()) != 0;
 588
 589     return m_iconized;
 590 }
 591
 592 void wxTopLevelWindowMSW::Restore()
 593 {
 594     DoShowWindow(SW_RESTORE);
 595 }
 596
 597 // ----------------------------------------------------------------------------
 598 // wxTopLevelWindowMSW fullscreen
 599 // ----------------------------------------------------------------------------
 600
 601 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 602 {
 603     if (show)
 604     {
 605         if (IsFullScreen())
 606             return FALSE;
 607
 608         m_fsIsShowing = TRUE;
 609         m_fsStyle = style;
 610
 611         // zap the frame borders
 612
 613         // save the 'normal' window style
 614         m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE);
 615
 616         // save the old position, width & height, maximize state
 617         m_fsOldSize = GetRect();
 618         m_fsIsMaximized = IsMaximized();
 619
 620         // decide which window style flags to turn off
 621         LONG newStyle = m_fsOldWindowStyle;
 622         LONG offFlags = 0;
 623
 624         if (style & wxFULLSCREEN_NOBORDER)
 625             offFlags |= WS_BORDER | WS_THICKFRAME;
 626         if (style & wxFULLSCREEN_NOCAPTION)
 627             offFlags |= (WS_CAPTION | WS_SYSMENU);
 628
 629         newStyle &= (~offFlags);
 630
 631         // change our window style to be compatible with full-screen mode
 632         ::SetWindowLong((HWND)GetHWND(), GWL_STYLE, newStyle);
 633
 634         // resize to the size of the desktop
 635         int width, height;
 636
 637         RECT rect = wxGetWindowRect(::GetDesktopWindow());
 638         width = rect.right - rect.left;
 639         height = rect.bottom - rect.top;
 640
 641         SetSize(width, height);
 642
 643         // now flush the window style cache and actually go full-screen
 644         SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
 645
 646         wxSizeEvent event(wxSize(width, height), GetId());
 647         GetEventHandler()->ProcessEvent(event);
 648
 649         return TRUE;
 650     }
 651     else
 652     {
 653         if (!IsFullScreen())
 654             return FALSE;
 655
 656         m_fsIsShowing = FALSE;
 657
 658         Maximize(m_fsIsMaximized);
 659         SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle);
 660         SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 661             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 662
 663         return TRUE;
 664     }
 665 }
 666
 667 // ----------------------------------------------------------------------------
 668 // wxTopLevelWindowMSW misc
 669 // ----------------------------------------------------------------------------
 670
 671 void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon)
 672 {
 673     SetIcons( wxIconBundle( icon ) );
 674 }
 675
 676 void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons)
 677 {
 678     wxTopLevelWindowBase::SetIcons(icons);
 679
 680 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 681     const wxIcon& sml = icons.GetIcon( wxSize( 16, 16 ) );
 682     if( sml.Ok() && sml.GetWidth() == 16 && sml.GetHeight() == 16 )
 683     {
 684         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_SMALL,
 685                        (LPARAM)GetHiconOf(sml) );
 686     }
 687
 688     const wxIcon& big = icons.GetIcon( wxSize( 32, 32 ) );
 689     if( big.Ok() && big.GetWidth() == 32 && big.GetHeight() == 32 )
 690     {
 691         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_BIG,
 692                        (LPARAM)GetHiconOf(big) );
 693     }
 694 #endif // __WIN95__
 695 }
 696
 697 bool wxTopLevelWindowMSW::EnableCloseButton(bool enable)
 698 {
 699 #ifndef __WXMICROWIN__
 700     // get system (a.k.a. window) menu
 701     HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE /* get it */);
 702     if ( !hmenu )
 703     {
 704         wxLogLastError(_T("GetSystemMenu"));
 705
 706         return FALSE;
 707     }
 708
 709     // enabling/disabling the close item from it also automatically
 710     // disables/enables the close title bar button
 711     if ( ::EnableMenuItem(hmenu, SC_CLOSE,
 712                           MF_BYCOMMAND |
 713                           (enable ? MF_ENABLED : MF_GRAYED)) == -1 )
 714     {
 715         wxLogLastError(_T("EnableMenuItem(SC_CLOSE)"));
 716
 717         return FALSE;
 718     }
 719
 720     // update appearance immediately
 721     if ( !::DrawMenuBar(GetHwnd()) )
 722     {
 723         wxLogLastError(_T("DrawMenuBar"));
 724     }
 725 #endif // !__WXMICROWIN__
 726
 727     return TRUE;
 728 }
 729
 730 // ----------------------------------------------------------------------------
 731 // wxTopLevelWindow event handling
 732 // ----------------------------------------------------------------------------
 733
 734 // Default activation behaviour - set the focus for the first child
 735 // subwindow found.
 736 void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
 737 {
 738     if ( event.GetActive() )
 739     {
 740         // restore focus to the child which was last focused
 741         wxLogTrace(_T("focus"), _T("wxTLW %08x activated."), (int) m_hWnd);
 742
 743         wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent()
 744                                             : NULL;
 745         if ( !parent )
 746         {
 747             parent = this;
 748         }
 749
 750         wxSetFocusToChild(parent, &m_winLastFocused);
 751     }
 752     else // deactivating
 753     {
 754         // remember the last focused child if it is our child
 755         m_winLastFocused = FindFocus();
 756
 757         if ( m_winLastFocused )
 758         {
 759             // let it know that it doesn't have focus any more
 760             m_winLastFocused->HandleKillFocus((WXHWND)NULL);
 761         }
 762
 763         // so we NULL it out if it's a child from some other frame
 764         wxWindow *win = m_winLastFocused;
 765         while ( win )
 766         {
 767             if ( win->IsTopLevel() )
 768             {
 769                 if ( win != this )
 770                 {
 771                     m_winLastFocused = NULL;
 772                 }
 773
 774                 break;
 775             }
 776
 777             win = win->GetParent();
 778         }
 779
 780         wxLogTrace(_T("focus"),
 781                    _T("wxTLW %08x deactivated, last focused: %08x."),
 782                    (int) m_hWnd,
 783                    (int) (m_winLastFocused ? GetHwndOf(m_winLastFocused)
 784                                            : NULL));
 785
 786         event.Skip();
 787     }
 788 }
 789
 790 // the DialogProc for all wxWindows dialogs
 791 LONG APIENTRY _EXPORT
 792 wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
 793 {
 794     switch ( message )
 795     {
 796         case WM_INITDIALOG:
 797             // for this message, returning TRUE tells system to set focus to
 798             // the first control in the dialog box, but as we set the focus
 799             // ourselves, we return FALSE from here as well, so fall through
 800
 801         default:
 802             // for all the other ones, FALSE means that we didn't process the
 803             // message
 804             return FALSE;
 805     }
 806 }
 807
 808 // ============================================================================
 809 // wxTLWHiddenParentModule implementation
 810 // ============================================================================
 811
 812 HWND wxTLWHiddenParentModule::ms_hwnd = NULL;
 813
 814 const wxChar *wxTLWHiddenParentModule::ms_className = NULL;
 815
 816 bool wxTLWHiddenParentModule::OnInit()
 817 {
 818     ms_hwnd = NULL;
 819     ms_className = NULL;
 820
 821     return TRUE;
 822 }
 823
 824 void wxTLWHiddenParentModule::OnExit()
 825 {
 826     if ( ms_hwnd )
 827     {
 828         if ( !::DestroyWindow(ms_hwnd) )
 829         {
 830             wxLogLastError(_T("DestroyWindow(hidden TLW parent)"));
 831         }
 832
 833         ms_hwnd = NULL;
 834     }
 835
 836     if ( ms_className )
 837     {
 838         if ( !::UnregisterClass(ms_className, wxGetInstance()) )
 839         {
 840             wxLogLastError(_T("UnregisterClass(\"wxTLWHiddenParent\")"));
 841         }
 842
 843         ms_className = NULL;
 844     }
 845 }
 846
 847 /* static */
 848 HWND wxTLWHiddenParentModule::GetHWND()
 849 {
 850     if ( !ms_hwnd )
 851     {
 852         if ( !ms_className )
 853         {
 854             static const wxChar *HIDDEN_PARENT_CLASS = _T("wxTLWHiddenParent");
 855
 856             WNDCLASS wndclass;
 857             wxZeroMemory(wndclass);
 858
 859             wndclass.lpfnWndProc   = DefWindowProc;
 860             wndclass.hInstance     = wxGetInstance();
 861             wndclass.lpszClassName = HIDDEN_PARENT_CLASS;
 862
 863             if ( !::RegisterClass(&wndclass) )
 864             {
 865                 wxLogLastError(_T("RegisterClass(\"wxTLWHiddenParent\")"));
 866             }
 867             else
 868             {
 869                 ms_className = HIDDEN_PARENT_CLASS;
 870             }
 871         }
 872
 873         ms_hwnd = ::CreateWindow(ms_className, _T(""), 0, 0, 0, 0, 0, NULL,
 874                                  (HMENU)NULL, wxGetInstance(), NULL);
 875         if ( !ms_hwnd )
 876         {
 877             wxLogLastError(_T("CreateWindow(hidden TLW parent)"));
 878         }
 879     }
 880
 881     return ms_hwnd;
 882 }
 883