src/msw/toplevel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/toplevel.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/dialog.h"
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/containr.h"        // wxSetFocusToChild()
  37     #include "wx/module.h"
  38 #endif //WX_PRECOMP
  39
  40 #include "wx/dynlib.h"
  41
  42 #include "wx/msw/private.h"
  43 #if defined(__WXWINCE__) && !defined(__HANDHELDPC__)
  44     #include <ole2.h>
  45     #include <shellapi.h>
  46     // Standard SDK doesn't have aygshell.dll: see include/wx/msw/wince/libraries.h
  47     #if _WIN32_WCE < 400 || !defined(__WINCE_STANDARDSDK__)
  48         #include <aygshell.h>
  49     #endif
  50 #endif
  51
  52 #include "wx/msw/winundef.h"
  53 #include "wx/msw/missing.h"
  54
  55 #include "wx/display.h"
  56
  57 #ifndef ICON_BIG
  58     #define ICON_BIG 1
  59 #endif
  60
  61 #ifndef ICON_SMALL
  62     #define ICON_SMALL 0
  63 #endif
  64
  65 // ----------------------------------------------------------------------------
  66 // stubs for missing functions under MicroWindows
  67 // ----------------------------------------------------------------------------
  68
  69 #ifdef __WXMICROWIN__
  70
  71 // static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return false; }
  72 static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return false; }
  73
  74 #endif // __WXMICROWIN__
  75
  76 // NB: wxDlgProc must be defined here and not in dialog.cpp because the latter
  77 //     is not included by wxUniv build which does need wxDlgProc
  78 LONG APIENTRY _EXPORT
  79 wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam);
  80
  81 // ----------------------------------------------------------------------------
  82 // globals
  83 // ----------------------------------------------------------------------------
  84
  85 // the name of the default wxWidgets class
  86 #ifdef __WXWINCE__
  87 extern       wxChar *wxCanvasClassName;
  88 #else
  89 extern const wxChar *wxCanvasClassName;
  90 #endif
  91
  92 // ----------------------------------------------------------------------------
  93 // wxTLWHiddenParentModule: used to manage the hidden parent window (we need a
  94 // module to ensure that the window is always deleted)
  95 // ----------------------------------------------------------------------------
  96
  97 class wxTLWHiddenParentModule : public wxModule
  98 {
  99 public:
 100     // module init/finalize
 101     virtual bool OnInit();
 102     virtual void OnExit();
 103
 104     // get the hidden window (creates on demand)
 105     static HWND GetHWND();
 106
 107 private:
 108     // the HWND of the hidden parent
 109     static HWND ms_hwnd;
 110
 111     // the class used to create it
 112     static const wxChar *ms_className;
 113
 114     DECLARE_DYNAMIC_CLASS(wxTLWHiddenParentModule)
 115 };
 116
 117 IMPLEMENT_DYNAMIC_CLASS(wxTLWHiddenParentModule, wxModule)
 118
 119 // ============================================================================
 120 // wxTopLevelWindowMSW implementation
 121 // ============================================================================
 122
 123 BEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase)
 124     EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate)
 125 END_EVENT_TABLE()
 126
 127 // ----------------------------------------------------------------------------
 128 // wxTopLevelWindowMSW creation
 129 // ----------------------------------------------------------------------------
 130
 131 void wxTopLevelWindowMSW::Init()
 132 {
 133     m_iconized =
 134     m_maximizeOnShow = false;
 135
 136     // Data to save/restore when calling ShowFullScreen
 137     m_fsStyle = 0;
 138     m_fsOldWindowStyle = 0;
 139     m_fsIsMaximized = false;
 140     m_fsIsShowing = false;
 141
 142     m_winLastFocused = (wxWindow *)NULL;
 143
 144 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 145     m_MenuBarHWND = 0;
 146 #endif
 147
 148 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 149     SHACTIVATEINFO* info = new SHACTIVATEINFO;
 150     wxZeroMemory(*info);
 151     info->cbSize = sizeof(SHACTIVATEINFO);
 152
 153     m_activateInfo = (void*) info;
 154 #endif
 155 }
 156
 157 WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const
 158 {
 159     // let the base class deal with the common styles but fix the ones which
 160     // don't make sense for us (we also deal with the borders ourselves)
 161     WXDWORD msflags = wxWindow::MSWGetStyle
 162                       (
 163                         (style & ~wxBORDER_MASK) | wxBORDER_NONE, exflags
 164                       ) & ~WS_CHILD & ~WS_VISIBLE;
 165
 166     // For some reason, WS_VISIBLE needs to be defined on creation for
 167     // SmartPhone 2003. The title can fail to be displayed otherwise.
 168 #if defined(__SMARTPHONE__) || (defined(__WXWINCE__) && _WIN32_WCE < 400)
 169     msflags |= WS_VISIBLE;
 170     ((wxTopLevelWindowMSW*)this)->wxWindowBase::Show(true);
 171 #endif
 172
 173     // first select the kind of window being created
 174     //
 175     // note that if we don't set WS_POPUP, Windows assumes WS_OVERLAPPED and
 176     // creates a window with both caption and border, hence we need to use
 177     // WS_POPUP in a few cases just to avoid having caption/border which we
 178     // don't want
 179
 180     // border and caption styles
 181     if ( ( style & wxRESIZE_BORDER ) && !IsAlwaysMaximized())
 182         msflags |= WS_THICKFRAME;
 183     else if ( exflags && ((style & wxBORDER_DOUBLE) || (style & wxBORDER_RAISED)) )
 184         *exflags |= WS_EX_DLGMODALFRAME;
 185     else if ( !(style & wxBORDER_NONE) )
 186         msflags |= WS_BORDER;
 187 #ifndef __POCKETPC__
 188     else
 189         msflags |= WS_POPUP;
 190 #endif
 191
 192     // normally we consider that all windows without a caption must be popups,
 193     // but CE is an exception: there windows normally do not have the caption
 194     // but shouldn't be made popups as popups can't have menus and don't look
 195     // like normal windows anyhow
 196
 197     // TODO: Smartphone appears to like wxCAPTION, but we should check that
 198     // we need it.
 199 #if defined(__SMARTPHONE__) || !defined(__WXWINCE__)
 200     if ( style & wxCAPTION )
 201         msflags |= WS_CAPTION;
 202 #ifndef __WXWINCE__
 203     else
 204         msflags |= WS_POPUP;
 205 #endif // !__WXWINCE__
 206 #endif
 207
 208     // next translate the individual flags
 209
 210     // WS_EX_CONTEXTHELP is incompatible with WS_MINIMIZEBOX and WS_MAXIMIZEBOX
 211     // and is ignored if we specify both of them, but chances are that if we
 212     // use wxWS_EX_CONTEXTHELP, we really do want to have the context help
 213     // button while wxMINIMIZE/wxMAXIMIZE are included by default, so the help
 214     // takes precedence
 215     if ( !(GetExtraStyle() & wxWS_EX_CONTEXTHELP) )
 216     {
 217         if ( style & wxMINIMIZE_BOX )
 218             msflags |= WS_MINIMIZEBOX;
 219         if ( style & wxMAXIMIZE_BOX )
 220             msflags |= WS_MAXIMIZEBOX;
 221     }
 222
 223 #ifndef __WXWINCE__
 224     if ( style & wxSYSTEM_MENU )
 225         msflags |= WS_SYSMENU;
 226 #endif
 227
 228     // NB: under CE these 2 styles are not supported currently, we should
 229     //     call Minimize()/Maximize() "manually" if we want to support them
 230     if ( style & wxMINIMIZE )
 231         msflags |= WS_MINIMIZE;
 232
 233     if ( style & wxMAXIMIZE )
 234         msflags |= WS_MAXIMIZE;
 235
 236     // Keep this here because it saves recoding this function in wxTinyFrame
 237     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 238         msflags |= WS_CAPTION;
 239
 240     if ( exflags )
 241     {
 242         // there is no taskbar under CE, so omit all this
 243 #if !defined(__WXWINCE__)
 244         if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) )
 245         {
 246             if ( style & wxFRAME_TOOL_WINDOW )
 247             {
 248                 // create the palette-like window
 249                 *exflags |= WS_EX_TOOLWINDOW;
 250
 251                 // tool windows shouldn't appear on the taskbar (as documented)
 252                 style |= wxFRAME_NO_TASKBAR;
 253             }
 254
 255             // We have to solve 2 different problems here:
 256             //
 257             // 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the
 258             //    taskbar even if they don't have a parent
 259             //
 260             // 2. frames without this style should appear in the taskbar even
 261             //    if they're owned (Windows only puts non owned windows into
 262             //    the taskbar normally)
 263             //
 264             // The second one is solved here by using WS_EX_APPWINDOW flag, the
 265             // first one is dealt with in our MSWGetParent() method
 266             // implementation
 267             if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() )
 268             {
 269                 // need to force the frame to appear in the taskbar
 270                 *exflags |= WS_EX_APPWINDOW;
 271             }
 272             //else: nothing to do [here]
 273         }
 274
 275         if ( GetExtraStyle() & wxWS_EX_CONTEXTHELP )
 276             *exflags |= WS_EX_CONTEXTHELP;
 277 #endif // !__WXWINCE__
 278
 279         if ( style & wxSTAY_ON_TOP )
 280             *exflags |= WS_EX_TOPMOST;
 281     }
 282
 283     return msflags;
 284 }
 285
 286 WXHWND wxTopLevelWindowMSW::MSWGetParent() const
 287 {
 288     // for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL
 289     // parent HWND or it would be always on top of its parent which is not what
 290     // we usually want (in fact, we only want it for frames with the
 291     // wxFRAME_FLOAT_ON_PARENT flag)
 292     HWND hwndParent = NULL;
 293     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 294     {
 295         const wxWindow *parent = GetParent();
 296
 297         if ( !parent )
 298         {
 299             // this flag doesn't make sense then and will be ignored
 300             wxFAIL_MSG( _T("wxFRAME_FLOAT_ON_PARENT but no parent?") );
 301         }
 302         else
 303         {
 304             hwndParent = GetHwndOf(parent);
 305         }
 306     }
 307     //else: don't float on parent, must not be owned
 308
 309     // now deal with the 2nd taskbar-related problem (see comments above in
 310     // MSWGetStyle())
 311     if ( HasFlag(wxFRAME_NO_TASKBAR) && !hwndParent )
 312     {
 313         // use hidden parent
 314         hwndParent = wxTLWHiddenParentModule::GetHWND();
 315     }
 316
 317     return (WXHWND)hwndParent;
 318 }
 319
 320 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 321 bool wxTopLevelWindowMSW::HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam)
 322 {
 323     SHACTIVATEINFO *info = (SHACTIVATEINFO*) m_activateInfo;
 324     if ( info )
 325     {
 326         SHHandleWMSettingChange(GetHwnd(), wParam, lParam, info);
 327     }
 328
 329     return wxWindowMSW::HandleSettingChange(wParam, lParam);
 330 }
 331 #endif
 332
 333 WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 334 {
 335     WXLRESULT rc = 0;
 336     bool processed = false;
 337
 338 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 339     switch ( message )
 340     {
 341         case WM_ACTIVATE:
 342         {
 343             SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
 344             if (info)
 345             {
 346                 DWORD flags = 0;
 347                 if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) flags = SHA_INPUTDIALOG;
 348                 SHHandleWMActivate(GetHwnd(), wParam, lParam, info, flags);
 349             }
 350
 351             // This implicitly sends a wxEVT_ACTIVATE_APP event
 352             if (wxTheApp)
 353                 wxTheApp->SetActive(wParam != 0, FindFocus());
 354
 355             break;
 356         }
 357         case WM_HIBERNATE:
 358         {
 359             if (wxTheApp)
 360             {
 361                 wxActivateEvent event(wxEVT_HIBERNATE, true, wxID_ANY);
 362                 event.SetEventObject(wxTheApp);
 363                 processed = wxTheApp->ProcessEvent(event);
 364             }
 365             break;
 366         }
 367     }
 368 #endif
 369
 370     if ( !processed )
 371         rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam);
 372
 373     return rc;
 374 }
 375
 376 bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
 377                                        const wxString& title,
 378                                        const wxPoint& pos,
 379                                        const wxSize& size)
 380 {
 381 #ifdef __WXMICROWIN__
 382     // no dialogs support under MicroWin yet
 383     return CreateFrame(title, pos, size);
 384 #else // !__WXMICROWIN__
 385     wxWindow *parent = GetParent();
 386
 387     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 388     // app window as parent - this avoids creating modal dialogs without
 389     // parent
 390     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 391     {
 392         parent = wxTheApp->GetTopWindow();
 393
 394         if ( parent )
 395         {
 396             // don't use transient windows as parents, this is dangerous as it
 397             // can lead to a crash if the parent is destroyed before the child
 398             //
 399             // also don't use the window which is currently hidden as then the
 400             // dialog would be hidden as well
 401             if ( (parent->GetExtraStyle() & wxWS_EX_TRANSIENT) ||
 402                     !parent->IsShown() )
 403             {
 404                 parent = NULL;
 405             }
 406         }
 407     }
 408
 409     m_hWnd = (WXHWND)::CreateDialogIndirect
 410                        (
 411                         wxGetInstance(),
 412                         (DLGTEMPLATE*)dlgTemplate,
 413                         parent ? GetHwndOf(parent) : NULL,
 414                         (DLGPROC)wxDlgProc
 415                        );
 416
 417     if ( !m_hWnd )
 418     {
 419         wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?"));
 420
 421         wxLogSysError(wxT("Can't create dialog using memory template"));
 422
 423         return false;
 424     }
 425
 426 #if !defined(__WXWINCE__)
 427     // For some reason, the system menu is activated when we use the
 428     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 429     if ( HasExtraStyle(wxWS_EX_CONTEXTHELP) )
 430     {
 431         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 432         if ( winTop )
 433         {
 434             wxIcon icon = winTop->GetIcon();
 435             if ( icon.Ok() )
 436             {
 437                 ::SendMessage(GetHwnd(), WM_SETICON,
 438                               (WPARAM)TRUE,
 439                               (LPARAM)GetHiconOf(icon));
 440             }
 441         }
 442     }
 443 #endif // !__WXWINCE__
 444
 445     // move the dialog to its initial position without forcing repainting
 446     int x, y, w, h;
 447     (void)MSWGetCreateWindowCoords(pos, size, x, y, w, h);
 448
 449     if ( x == (int)CW_USEDEFAULT )
 450     {
 451         // centre it on the screen - what else can we do?
 452         wxSize sizeDpy = wxGetDisplaySize();
 453
 454         x = (sizeDpy.x - w) / 2;
 455         y = (sizeDpy.y - h) / 2;
 456     }
 457
 458 #if !defined(__WXWINCE__) || defined(__WINCE_STANDARDSDK__)
 459     if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 460     {
 461         wxLogLastError(wxT("MoveWindow"));
 462     }
 463 #endif
 464
 465     if ( !title.empty() )
 466     {
 467         ::SetWindowText(GetHwnd(), title.wx_str());
 468     }
 469
 470     SubclassWin(m_hWnd);
 471
 472 #ifdef __SMARTPHONE__
 473     // Work around title non-display glitch
 474     Show(false);
 475 #endif
 476
 477     return true;
 478 #endif // __WXMICROWIN__/!__WXMICROWIN__
 479 }
 480
 481 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 482                                       const wxPoint& pos,
 483                                       const wxSize& size)
 484 {
 485     WXDWORD exflags;
 486     WXDWORD flags = MSWGetCreateWindowFlags(&exflags);
 487
 488     const wxSize sz = IsAlwaysMaximized() ? wxDefaultSize : size;
 489
 490 #ifndef __WXWINCE__
 491     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 492         exflags |= WS_EX_LAYOUTRTL;
 493 #endif
 494
 495     return MSWCreate(wxCanvasClassName, title.wx_str(), pos, sz, flags, exflags);
 496 }
 497
 498 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 499                                  wxWindowID id,
 500                                  const wxString& title,
 501                                  const wxPoint& pos,
 502                                  const wxSize& size,
 503                                  long style,
 504                                  const wxString& name)
 505 {
 506     bool ret wxDUMMY_INITIALIZE(false);
 507
 508     // init our fields
 509     Init();
 510
 511     wxSize sizeReal = size;
 512     if ( !sizeReal.IsFullySpecified() )
 513     {
 514         sizeReal.SetDefaults(GetDefaultSize());
 515     }
 516
 517     m_windowStyle = style;
 518
 519     SetName(name);
 520
 521     m_windowId = id == wxID_ANY ? NewControlId() : id;
 522
 523     wxTopLevelWindows.Append(this);
 524
 525     if ( parent )
 526         parent->AddChild(this);
 527
 528     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 529     {
 530         // we have different dialog templates to allows creation of dialogs
 531         // with & without captions under MSWindows, resizeable or not (but a
 532         // resizeable dialog always has caption - otherwise it would look too
 533         // strange)
 534
 535         // we need 3 additional WORDs for dialog menu, class and title (as we
 536         // don't use DS_SETFONT we don't need the fourth WORD for the font)
 537         static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3);
 538         DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize);
 539         memset(dlgTemplate, 0, dlgsize);
 540
 541         // these values are arbitrary, they won't be used normally anyhow
 542         dlgTemplate->x  = 34;
 543         dlgTemplate->y  = 22;
 544         dlgTemplate->cx = 144;
 545         dlgTemplate->cy = 75;
 546
 547         // reuse the code in MSWGetStyle() but correct the results slightly for
 548         // the dialog
 549         dlgTemplate->style = MSWGetStyle(style, &dlgTemplate->dwExtendedStyle);
 550
 551         // all dialogs are popups
 552         dlgTemplate->style |= WS_POPUP;
 553
 554 #ifndef __WXWINCE__
 555         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 556         {
 557             dlgTemplate->dwExtendedStyle |= WS_EX_LAYOUTRTL;
 558         }
 559
 560         // force 3D-look if necessary, it looks impossibly ugly otherwise
 561         if ( style & (wxRESIZE_BORDER | wxCAPTION) )
 562             dlgTemplate->style |= DS_MODALFRAME;
 563 #endif
 564
 565         ret = CreateDialog(dlgTemplate, title, pos, sizeReal);
 566         free(dlgTemplate);
 567     }
 568     else // !dialog
 569     {
 570         ret = CreateFrame(title, pos, sizeReal);
 571     }
 572
 573 #ifndef __WXWINCE__
 574     if ( ret && !(GetWindowStyleFlag() & wxCLOSE_BOX) )
 575     {
 576         EnableCloseButton(false);
 577     }
 578 #endif
 579
 580     // for standard dialogs the dialog manager generates WM_CHANGEUISTATE
 581     // itself but for custom windows we have to do it ourselves in order to
 582     // make the keyboard indicators (such as underlines for accelerators and
 583     // focus rectangles) work under Win2k+
 584     if ( ret )
 585     {
 586         MSWUpdateUIState(UIS_INITIALIZE);
 587     }
 588
 589     // Note: if we include PocketPC in this test, dialogs can fail to show up,
 590     // for example the text entry dialog in the dialogs sample. Problem with Maximise()?
 591 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__WINCE_STANDARDSDK__))
 592     if ( ( style & wxMAXIMIZE ) || IsAlwaysMaximized() )
 593     {
 594         this->Maximize();
 595     }
 596 #endif
 597
 598 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 599     SetRightMenu(); // to nothing for initialization
 600 #endif
 601
 602     return ret;
 603 }
 604
 605 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 606 {
 607 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 608     SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
 609     delete info;
 610     m_activateInfo = NULL;
 611 #endif
 612
 613     // after destroying an owned window, Windows activates the next top level
 614     // window in Z order but it may be different from our owner (to reproduce
 615     // this simply Alt-TAB to another application and back before closing the
 616     // owned frame) whereas we always want to yield activation to our parent
 617     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 618     {
 619         wxWindow *parent = GetParent();
 620         if ( parent )
 621         {
 622             ::BringWindowToTop(GetHwndOf(parent));
 623         }
 624     }
 625 }
 626
 627 // ----------------------------------------------------------------------------
 628 // wxTopLevelWindowMSW showing
 629 // ----------------------------------------------------------------------------
 630
 631 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 632 {
 633     ::ShowWindow(GetHwnd(), nShowCmd);
 634
 635     m_iconized = nShowCmd == SW_MINIMIZE;
 636 }
 637
 638 bool wxTopLevelWindowMSW::Show(bool show)
 639 {
 640     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 641     if ( !wxWindowBase::Show(show) )
 642         return false;
 643
 644     int nShowCmd;
 645     if ( show )
 646     {
 647         if ( m_maximizeOnShow )
 648         {
 649             // show and maximize
 650             nShowCmd = SW_MAXIMIZE;
 651
 652             // This is necessary, or no window appears
 653 #if defined( __WINCE_STANDARDSDK__) || defined(__SMARTPHONE__)
 654             DoShowWindow(SW_SHOW);
 655 #endif
 656
 657             m_maximizeOnShow = false;
 658         }
 659         else // just show
 660         {
 661            if ( GetWindowStyle() & wxFRAME_TOOL_WINDOW )
 662                nShowCmd = SW_SHOWNA;
 663            else
 664                nShowCmd = SW_SHOW;
 665         }
 666     }
 667     else // hide
 668     {
 669         nShowCmd = SW_HIDE;
 670     }
 671
 672     DoShowWindow(nShowCmd);
 673
 674 #if defined(__WXWINCE__) && (_WIN32_WCE >= 400 && !defined(__POCKETPC__) && !defined(__SMARTPHONE__))
 675     // Addornments have to be added when the frame is the correct size
 676     wxFrame* frame = wxDynamicCast(this, wxFrame);
 677     if (frame && frame->GetMenuBar())
 678         frame->GetMenuBar()->AddAdornments(GetWindowStyleFlag());
 679 #endif
 680
 681     // we only set pending size if we're maximized before being shown, now that
 682     // we're shown we don't need it any more (it is reset in size event handler
 683     // for child windows but we have to do it ourselves for this parent window)
 684     m_pendingSize = wxDefaultSize;
 685
 686     return true;
 687 }
 688
 689 // ----------------------------------------------------------------------------
 690 // wxTopLevelWindowMSW maximize/minimize
 691 // ----------------------------------------------------------------------------
 692
 693 void wxTopLevelWindowMSW::Maximize(bool maximize)
 694 {
 695     if ( IsShown() )
 696     {
 697         // just maximize it directly
 698         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 699     }
 700     else // hidden
 701     {
 702         // we can't maximize the hidden frame because it shows it as well,
 703         // so just remember that we should do it later in this case
 704         m_maximizeOnShow = maximize;
 705
 706         // after calling Maximize() the client code expects to get the frame
 707         // "real" size and doesn't want to know that, because of implementation
 708         // details, the frame isn't really maximized yet but will be only once
 709         // it's shown, so return our size as it will be then in this case
 710         if ( maximize )
 711         {
 712             // we must only change pending size here, and not call SetSize()
 713             // because otherwise Windows would think that this (full screen)
 714             // size is the natural size for the frame and so would use it when
 715             // the user clicks on "restore" title bar button instead of the
 716             // correct initial frame size
 717             //
 718             // NB: unfortunately we don't know which display we're on yet so we
 719             //     have to use the default one
 720             m_pendingSize = wxGetClientDisplayRect().GetSize();
 721         }
 722         //else: can't do anything in this case, we don't have the old size
 723     }
 724 }
 725
 726 bool wxTopLevelWindowMSW::IsMaximized() const
 727 {
 728     return IsAlwaysMaximized() ||
 729 #if !defined(__SMARTPHONE__) && !defined(__POCKETPC__) && !defined(__WINCE_STANDARDSDK__)
 730
 731            (::IsZoomed(GetHwnd()) != 0) ||
 732 #endif
 733            m_maximizeOnShow;
 734 }
 735
 736 void wxTopLevelWindowMSW::Iconize(bool iconize)
 737 {
 738     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 739 }
 740
 741 bool wxTopLevelWindowMSW::IsIconized() const
 742 {
 743 #ifdef __WXWINCE__
 744     return false;
 745 #else
 746     // don't use m_iconized, it may be briefly out of sync with the real state
 747     // as it's only modified when we receive a WM_SIZE and we could be called
 748     // from an event handler from one of the messages we receive before it,
 749     // such as WM_MOVE
 750     return ::IsIconic(GetHwnd()) != 0;
 751 #endif
 752 }
 753
 754 void wxTopLevelWindowMSW::Restore()
 755 {
 756     DoShowWindow(SW_RESTORE);
 757 }
 758
 759 void wxTopLevelWindowMSW::SetLayoutDirection(wxLayoutDirection dir)
 760 {
 761     if ( dir == wxLayout_Default )
 762         dir = wxTheApp->GetLayoutDirection();
 763
 764     if ( dir != wxLayout_Default )
 765         wxTopLevelWindowBase::SetLayoutDirection(dir);
 766 }
 767
 768 // ----------------------------------------------------------------------------
 769 // wxTopLevelWindowMSW geometry
 770 // ----------------------------------------------------------------------------
 771
 772 #ifndef __WXWINCE__
 773
 774 void wxTopLevelWindowMSW::DoGetPosition(int *x, int *y) const
 775 {
 776     if ( IsIconized() )
 777     {
 778         WINDOWPLACEMENT wp;
 779         wp.length = sizeof(WINDOWPLACEMENT);
 780         if ( ::GetWindowPlacement(GetHwnd(), &wp) )
 781         {
 782             RECT& rc = wp.rcNormalPosition;
 783
 784             // the position returned by GetWindowPlacement() is in workspace
 785             // coordinates except for windows with WS_EX_TOOLWINDOW style
 786             if ( !HasFlag(wxFRAME_TOOL_WINDOW) )
 787             {
 788                 // we must use the correct display for the translation as the
 789                 // task bar might be shown on one display but not the other one
 790                 int n = wxDisplay::GetFromWindow(this);
 791                 wxDisplay dpy(n == wxNOT_FOUND ? 0 : n);
 792                 const wxPoint ptOfs = dpy.GetClientArea().GetPosition() -
 793                                       dpy.GetGeometry().GetPosition();
 794
 795                 rc.left += ptOfs.x;
 796                 rc.top += ptOfs.y;
 797             }
 798
 799             if ( x )
 800                 *x = rc.left;
 801             if ( y )
 802                 *y = rc.top;
 803
 804             return;
 805         }
 806
 807         wxLogLastError(_T("GetWindowPlacement"));
 808     }
 809     //else: normal case
 810
 811     wxTopLevelWindowBase::DoGetPosition(x, y);
 812 }
 813
 814 void wxTopLevelWindowMSW::DoGetSize(int *width, int *height) const
 815 {
 816     if ( IsIconized() )
 817     {
 818         WINDOWPLACEMENT wp;
 819         wp.length = sizeof(WINDOWPLACEMENT);
 820         if ( ::GetWindowPlacement(GetHwnd(), &wp) )
 821         {
 822             const RECT& rc = wp.rcNormalPosition;
 823
 824             if ( width )
 825                 *width = rc.right - rc.left;
 826             if ( height )
 827                 *height = rc.bottom - rc.top;
 828
 829             return;
 830         }
 831
 832         wxLogLastError(_T("GetWindowPlacement"));
 833     }
 834     //else: normal case
 835
 836     wxTopLevelWindowBase::DoGetSize(width, height);
 837 }
 838
 839 #endif // __WXWINCE__
 840
 841 // ----------------------------------------------------------------------------
 842 // wxTopLevelWindowMSW fullscreen
 843 // ----------------------------------------------------------------------------
 844
 845 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 846 {
 847     if ( show == IsFullScreen() )
 848     {
 849         // nothing to do
 850         return true;
 851     }
 852
 853     m_fsIsShowing = show;
 854
 855     if ( show )
 856     {
 857         m_fsStyle = style;
 858
 859         // zap the frame borders
 860
 861         // save the 'normal' window style
 862         m_fsOldWindowStyle = GetWindowLong(GetHwnd(), GWL_STYLE);
 863
 864         // save the old position, width & height, maximize state
 865         m_fsOldSize = GetRect();
 866         m_fsIsMaximized = IsMaximized();
 867
 868         // decide which window style flags to turn off
 869         LONG newStyle = m_fsOldWindowStyle;
 870         LONG offFlags = 0;
 871
 872         if (style & wxFULLSCREEN_NOBORDER)
 873         {
 874             offFlags |= WS_BORDER;
 875 #ifndef __WXWINCE__
 876             offFlags |= WS_THICKFRAME;
 877 #endif
 878         }
 879         if (style & wxFULLSCREEN_NOCAPTION)
 880             offFlags |= WS_CAPTION | WS_SYSMENU;
 881
 882         newStyle &= ~offFlags;
 883
 884         // change our window style to be compatible with full-screen mode
 885         ::SetWindowLong(GetHwnd(), GWL_STYLE, newStyle);
 886
 887         wxRect rect;
 888 #if wxUSE_DISPLAY
 889         // resize to the size of the display containing us
 890         int dpy = wxDisplay::GetFromWindow(this);
 891         if ( dpy != wxNOT_FOUND )
 892         {
 893             rect = wxDisplay(dpy).GetGeometry();
 894         }
 895         else // fall back to the main desktop
 896 #endif // wxUSE_DISPLAY
 897         {
 898             // resize to the size of the desktop
 899             wxCopyRECTToRect(wxGetWindowRect(::GetDesktopWindow()), rect);
 900 #ifdef __WXWINCE__
 901             // FIXME: size of the bottom menu (toolbar)
 902             // should be taken in account
 903             rect.height += rect.y;
 904             rect.y       = 0;
 905 #endif
 906         }
 907
 908         SetSize(rect);
 909
 910         // now flush the window style cache and actually go full-screen
 911         long flags = SWP_FRAMECHANGED;
 912
 913         // showing the frame full screen should also show it if it's still
 914         // hidden
 915         if ( !IsShown() )
 916         {
 917             // don't call wxWindow version to avoid flicker from calling
 918             // ::ShowWindow() -- we're going to show the window at the correct
 919             // location directly below -- but do call the wxWindowBase version
 920             // to sync the internal m_isShown flag
 921             wxWindowBase::Show();
 922
 923             flags |= SWP_SHOWWINDOW;
 924         }
 925
 926         SetWindowPos(GetHwnd(), HWND_TOP,
 927                      rect.x, rect.y, rect.width, rect.height,
 928                      flags);
 929
 930 #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400))
 931         ::SHFullScreen(GetHwnd(), SHFS_HIDETASKBAR | SHFS_HIDESIPBUTTON);
 932 #endif
 933
 934         // finally send an event allowing the window to relayout itself &c
 935         wxSizeEvent event(rect.GetSize(), GetId());
 936         HandleWindowEvent(event);
 937     }
 938     else // stop showing full screen
 939     {
 940 #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400))
 941         ::SHFullScreen(GetHwnd(), SHFS_SHOWTASKBAR | SHFS_SHOWSIPBUTTON);
 942 #endif
 943         Maximize(m_fsIsMaximized);
 944         SetWindowLong(GetHwnd(),GWL_STYLE, m_fsOldWindowStyle);
 945         SetWindowPos(GetHwnd(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 946             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 947     }
 948
 949     return true;
 950 }
 951
 952 // ----------------------------------------------------------------------------
 953 // wxTopLevelWindowMSW misc
 954 // ----------------------------------------------------------------------------
 955
 956 void wxTopLevelWindowMSW::SetTitle( const wxString& title)
 957 {
 958     SetLabel(title);
 959 }
 960
 961 wxString wxTopLevelWindowMSW::GetTitle() const
 962 {
 963     return GetLabel();
 964 }
 965
 966 void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons)
 967 {
 968     wxTopLevelWindowBase::SetIcons(icons);
 969
 970 #if !defined(__WXMICROWIN__)
 971     const wxIcon& sml = icons.GetIconOfExactSize(16);
 972     if( sml.Ok() )
 973     {
 974         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_SMALL,
 975                        (LPARAM)GetHiconOf(sml) );
 976     }
 977
 978     const wxIcon& big = icons.GetIconOfExactSize(32);
 979     if( big.Ok() )
 980     {
 981         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_BIG,
 982                        (LPARAM)GetHiconOf(big) );
 983     }
 984 #endif // !__WXMICROWIN__
 985 }
 986
 987 bool wxTopLevelWindowMSW::EnableCloseButton(bool enable)
 988 {
 989 #if !defined(__WXMICROWIN__)
 990     // get system (a.k.a. window) menu
 991     HMENU hmenu = GetSystemMenu(GetHwnd(), FALSE /* get it */);
 992     if ( !hmenu )
 993     {
 994         // no system menu at all -- ok if we want to remove the close button
 995         // anyhow, but bad if we want to show it
 996         return !enable;
 997     }
 998
 999     // enabling/disabling the close item from it also automatically
1000     // disables/enables the close title bar button
1001     if ( ::EnableMenuItem(hmenu, SC_CLOSE,
1002                           MF_BYCOMMAND |
1003                           (enable ? MF_ENABLED : MF_GRAYED)) == -1 )
1004     {
1005         wxLogLastError(_T("EnableMenuItem(SC_CLOSE)"));
1006
1007         return false;
1008     }
1009 #ifndef __WXWINCE__
1010     // update appearance immediately
1011     if ( !::DrawMenuBar(GetHwnd()) )
1012     {
1013         wxLogLastError(_T("DrawMenuBar"));
1014     }
1015 #endif
1016 #endif // !__WXMICROWIN__
1017
1018     return true;
1019 }
1020
1021 #ifndef __WXWINCE__
1022
1023 bool wxTopLevelWindowMSW::SetShape(const wxRegion& region)
1024 {
1025     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1026                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1027
1028     // The empty region signifies that the shape should be removed from the
1029     // window.
1030     if ( region.IsEmpty() )
1031     {
1032         if (::SetWindowRgn(GetHwnd(), NULL, TRUE) == 0)
1033         {
1034             wxLogLastError(_T("SetWindowRgn"));
1035             return false;
1036         }
1037         return true;
1038     }
1039
1040     // Windows takes ownership of the region, so
1041     // we'll have to make a copy of the region to give to it.
1042     DWORD noBytes = ::GetRegionData(GetHrgnOf(region), 0, NULL);
1043     RGNDATA *rgnData = (RGNDATA*) new char[noBytes];
1044     ::GetRegionData(GetHrgnOf(region), noBytes, rgnData);
1045     HRGN hrgn = ::ExtCreateRegion(NULL, noBytes, rgnData);
1046     delete[] (char*) rgnData;
1047
1048     // SetWindowRgn expects the region to be in coordinants
1049     // relative to the window, not the client area.  Figure
1050     // out the offset, if any.
1051     RECT rect;
1052     DWORD dwStyle =   ::GetWindowLong(GetHwnd(), GWL_STYLE);
1053     DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1054     ::GetClientRect(GetHwnd(), &rect);
1055     ::AdjustWindowRectEx(&rect, dwStyle, FALSE, dwExStyle);
1056     ::OffsetRgn(hrgn, -rect.left, -rect.top);
1057
1058     // Now call the shape API with the new region.
1059     if (::SetWindowRgn(GetHwnd(), hrgn, TRUE) == 0)
1060     {
1061         wxLogLastError(_T("SetWindowRgn"));
1062         return false;
1063     }
1064     return true;
1065 }
1066
1067 #endif // !__WXWINCE__
1068
1069 void wxTopLevelWindowMSW::RequestUserAttention(int flags)
1070 {
1071     // check if we can use FlashWindowEx(): unfortunately a simple test for
1072     // FLASHW_STOP doesn't work because MSVC6 headers do #define it but don't
1073     // provide FlashWindowEx() declaration, so try to detect whether we have
1074     // real headers for WINVER 0x0500 by checking for existence of a symbol not
1075     // declated in MSVC6 header
1076 #if defined(FLASHW_STOP) && defined(VK_XBUTTON1) && wxUSE_DYNLIB_CLASS
1077     // available in the headers, check if it is supported by the system
1078     typedef BOOL (WINAPI *FlashWindowEx_t)(FLASHWINFO *pfwi);
1079     FlashWindowEx_t s_pfnFlashWindowEx = NULL;
1080     if ( !s_pfnFlashWindowEx )
1081     {
1082         wxDynamicLibrary dllUser32(_T("user32.dll"));
1083         s_pfnFlashWindowEx = (FlashWindowEx_t)
1084                                 dllUser32.GetSymbol(_T("FlashWindowEx"));
1085
1086         // we can safely unload user32.dll here, it's going to remain loaded as
1087         // long as the program is running anyhow
1088     }
1089
1090     if ( s_pfnFlashWindowEx )
1091     {
1092         WinStruct<FLASHWINFO> fwi;
1093         fwi.hwnd = GetHwnd();
1094         fwi.dwFlags = FLASHW_ALL;
1095         if ( flags & wxUSER_ATTENTION_INFO )
1096         {
1097             // just flash a few times
1098             fwi.uCount = 3;
1099         }
1100         else // wxUSER_ATTENTION_ERROR
1101         {
1102             // flash until the user notices it
1103             fwi.dwFlags |= FLASHW_TIMERNOFG;
1104         }
1105
1106         s_pfnFlashWindowEx(&fwi);
1107     }
1108     else // FlashWindowEx() not available
1109 #endif // FlashWindowEx() defined
1110     {
1111         wxUnusedVar(flags);
1112 #ifndef __WXWINCE__
1113         ::FlashWindow(GetHwnd(), TRUE);
1114 #endif // __WXWINCE__
1115     }
1116 }
1117
1118 // ---------------------------------------------------------------------------
1119
1120 bool wxTopLevelWindowMSW::SetTransparent(wxByte alpha)
1121 {
1122 #if wxUSE_DYNLIB_CLASS
1123     typedef DWORD (WINAPI *PSETLAYEREDWINDOWATTR)(HWND, DWORD, BYTE, DWORD);
1124     static PSETLAYEREDWINDOWATTR pSetLayeredWindowAttributes = NULL;
1125
1126     if ( pSetLayeredWindowAttributes == NULL )
1127     {
1128         wxDynamicLibrary dllUser32(_T("user32.dll"));
1129         pSetLayeredWindowAttributes = (PSETLAYEREDWINDOWATTR)
1130             dllUser32.GetSymbol(wxT("SetLayeredWindowAttributes"));
1131     }
1132     if ( pSetLayeredWindowAttributes == NULL )
1133         return false;
1134 #endif // wxUSE_DYNLIB_CLASS
1135
1136     LONG exstyle = GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1137
1138     // if setting alpha to fully opaque then turn off the layered style
1139     if (alpha == 255)
1140     {
1141         SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle & ~WS_EX_LAYERED);
1142         Refresh();
1143         return true;
1144     }
1145
1146 #if wxUSE_DYNLIB_CLASS
1147     // Otherwise, set the layered style if needed and set the alpha value
1148     if ((exstyle & WS_EX_LAYERED) == 0 )
1149         SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle | WS_EX_LAYERED);
1150
1151     if ( pSetLayeredWindowAttributes(GetHwnd(), 0, (BYTE)alpha, LWA_ALPHA) )
1152         return true;
1153 #endif // wxUSE_DYNLIB_CLASS
1154
1155     return false;
1156 }
1157
1158 bool wxTopLevelWindowMSW::CanSetTransparent()
1159 {
1160     // The API is available on win2k and above
1161
1162     static int os_type = -1;
1163     static int ver_major = -1;
1164
1165     if (os_type == -1)
1166         os_type = ::wxGetOsVersion(&ver_major);
1167
1168     return (os_type == wxOS_WINDOWS_NT && ver_major >= 5);
1169 }
1170
1171 // ----------------------------------------------------------------------------
1172 // wxTopLevelWindow event handling
1173 // ----------------------------------------------------------------------------
1174
1175 // Default activation behaviour - set the focus for the first child
1176 // subwindow found.
1177 void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
1178 {
1179     if ( event.GetActive() )
1180     {
1181         // restore focus to the child which was last focused unless we already
1182         // have it
1183         wxLogTrace(_T("focus"), _T("wxTLW %08x activated."), (int) m_hWnd);
1184
1185         wxWindow *winFocus = FindFocus();
1186         if ( !winFocus || wxGetTopLevelParent(winFocus) != this )
1187         {
1188             wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent()
1189                                                 : NULL;
1190             if ( !parent )
1191             {
1192                 parent = this;
1193             }
1194
1195             wxSetFocusToChild(parent, &m_winLastFocused);
1196         }
1197     }
1198     else // deactivating
1199     {
1200         // remember the last focused child if it is our child
1201         m_winLastFocused = FindFocus();
1202
1203         if ( m_winLastFocused )
1204         {
1205             // let it know that it doesn't have focus any more
1206             m_winLastFocused->HandleKillFocus((WXHWND)NULL);
1207
1208             // and don't remember it if it's a child from some other frame
1209             if ( wxGetTopLevelParent(m_winLastFocused) != this )
1210             {
1211                 m_winLastFocused = NULL;
1212             }
1213         }
1214
1215         wxLogTrace(_T("focus"),
1216                    _T("wxTLW %08x deactivated, last focused: %08x."),
1217                    (int) m_hWnd,
1218                    (int) (m_winLastFocused ? GetHwndOf(m_winLastFocused)
1219                                            : NULL));
1220
1221         event.Skip();
1222     }
1223 }
1224
1225 // the DialogProc for all wxWidgets dialogs
1226 LONG APIENTRY _EXPORT
1227 wxDlgProc(HWND hDlg,
1228           UINT message,
1229           WPARAM WXUNUSED(wParam),
1230           LPARAM WXUNUSED(lParam))
1231 {
1232     switch ( message )
1233     {
1234         case WM_INITDIALOG:
1235         {
1236             // under CE, add a "Ok" button in the dialog title bar and make it full
1237             // screen
1238             //
1239             // TODO: find the window for this HWND, and take into account
1240             // wxMAXIMIZE and wxCLOSE_BOX. For now, assume both are present.
1241             //
1242             // Standard SDK doesn't have aygshell.dll: see
1243             // include/wx/msw/wince/libraries.h
1244 #if defined(__WXWINCE__) && !defined(__WINCE_STANDARDSDK__) && !defined(__HANDHELDPC__)
1245             SHINITDLGINFO shidi;
1246             shidi.dwMask = SHIDIM_FLAGS;
1247             shidi.dwFlags = SHIDIF_SIZEDLG // take account of the SIP or menubar
1248 #ifndef __SMARTPHONE__
1249                             | SHIDIF_DONEBUTTON
1250 #endif
1251                         ;
1252             shidi.hDlg = hDlg;
1253             SHInitDialog( &shidi );
1254 #else // no SHInitDialog()
1255             wxUnusedVar(hDlg);
1256 #endif
1257             // for WM_INITDIALOG, returning TRUE tells system to set focus to
1258             // the first control in the dialog box, but as we set the focus
1259             // ourselves, we return FALSE for it as well
1260             return FALSE;
1261         }
1262     }
1263
1264     // for almost all messages, returning FALSE means that we didn't process
1265     // the message
1266     return FALSE;
1267 }
1268
1269 // ============================================================================
1270 // wxTLWHiddenParentModule implementation
1271 // ============================================================================
1272
1273 HWND wxTLWHiddenParentModule::ms_hwnd = NULL;
1274
1275 const wxChar *wxTLWHiddenParentModule::ms_className = NULL;
1276
1277 bool wxTLWHiddenParentModule::OnInit()
1278 {
1279     ms_hwnd = NULL;
1280     ms_className = NULL;
1281
1282     return true;
1283 }
1284
1285 void wxTLWHiddenParentModule::OnExit()
1286 {
1287     if ( ms_hwnd )
1288     {
1289         if ( !::DestroyWindow(ms_hwnd) )
1290         {
1291             wxLogLastError(_T("DestroyWindow(hidden TLW parent)"));
1292         }
1293
1294         ms_hwnd = NULL;
1295     }
1296
1297     if ( ms_className )
1298     {
1299         if ( !::UnregisterClass(ms_className, wxGetInstance()) )
1300         {
1301             wxLogLastError(_T("UnregisterClass(\"wxTLWHiddenParent\")"));
1302         }
1303
1304         ms_className = NULL;
1305     }
1306 }
1307
1308 /* static */
1309 HWND wxTLWHiddenParentModule::GetHWND()
1310 {
1311     if ( !ms_hwnd )
1312     {
1313         if ( !ms_className )
1314         {
1315             static const wxChar *HIDDEN_PARENT_CLASS = _T("wxTLWHiddenParent");
1316
1317             WNDCLASS wndclass;
1318             wxZeroMemory(wndclass);
1319
1320             wndclass.lpfnWndProc   = DefWindowProc;
1321             wndclass.hInstance     = wxGetInstance();
1322             wndclass.lpszClassName = HIDDEN_PARENT_CLASS;
1323
1324             if ( !::RegisterClass(&wndclass) )
1325             {
1326                 wxLogLastError(_T("RegisterClass(\"wxTLWHiddenParent\")"));
1327             }
1328             else
1329             {
1330                 ms_className = HIDDEN_PARENT_CLASS;
1331             }
1332         }
1333
1334         ms_hwnd = ::CreateWindow(ms_className, wxEmptyString, 0, 0, 0, 0, 0, NULL,
1335                                  (HMENU)NULL, wxGetInstance(), NULL);
1336         if ( !ms_hwnd )
1337         {
1338             wxLogLastError(_T("CreateWindow(hidden TLW parent)"));
1339         }
1340     }
1341
1342     return ms_hwnd;
1343 }