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/msw/missing.h"
  31     #include "wx/app.h"
  32     #include "wx/dialog.h"
  33     #include "wx/string.h"
  34     #include "wx/log.h"
  35     #include "wx/intl.h"
  36     #include "wx/frame.h"
  37     #include "wx/containr.h"        // wxSetFocusToChild()
  38     #include "wx/module.h"
  39 #endif //WX_PRECOMP
  40
  41 #include "wx/dynlib.h"
  42
  43 #include "wx/msw/private.h"
  44 #if defined(__WXWINCE__) && !defined(__HANDHELDPC__)
  45     #include <ole2.h>
  46     #include <shellapi.h>
  47     // Standard SDK doesn't have aygshell.dll: see include/wx/msw/wince/libraries.h
  48     #if _WIN32_WCE < 400 || !defined(__WINCE_STANDARDSDK__)
  49         #include <aygshell.h>
  50     #endif
  51     #include "wx/msw/wince/missing.h"
  52 #endif
  53
  54 #include "wx/msw/winundef.h"
  55
  56 #include "wx/display.h"
  57
  58 #ifndef ICON_BIG
  59     #define ICON_BIG 1
  60 #endif
  61
  62 #ifndef ICON_SMALL
  63     #define ICON_SMALL 0
  64 #endif
  65
  66 // ----------------------------------------------------------------------------
  67 // stubs for missing functions under MicroWindows
  68 // ----------------------------------------------------------------------------
  69
  70 #ifdef __WXMICROWIN__
  71
  72 // static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return false; }
  73 static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return false; }
  74
  75 #endif // __WXMICROWIN__
  76
  77 // NB: wxDlgProc must be defined here and not in dialog.cpp because the latter
  78 //     is not included by wxUniv build which does need wxDlgProc
  79 LONG APIENTRY _EXPORT
  80 wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam);
  81
  82 // ----------------------------------------------------------------------------
  83 // globals
  84 // ----------------------------------------------------------------------------
  85
  86 // the name of the default wxWidgets class
  87 #ifdef __WXWINCE__
  88 extern       wxChar *wxCanvasClassName;
  89 #else
  90 extern const wxChar *wxCanvasClassName;
  91 #endif
  92
  93 // ----------------------------------------------------------------------------
  94 // wxTLWHiddenParentModule: used to manage the hidden parent window (we need a
  95 // module to ensure that the window is always deleted)
  96 // ----------------------------------------------------------------------------
  97
  98 class wxTLWHiddenParentModule : public wxModule
  99 {
 100 public:
 101     // module init/finalize
 102     virtual bool OnInit();
 103     virtual void OnExit();
 104
 105     // get the hidden window (creates on demand)
 106     static HWND GetHWND();
 107
 108 private:
 109     // the HWND of the hidden parent
 110     static HWND ms_hwnd;
 111
 112     // the class used to create it
 113     static const wxChar *ms_className;
 114
 115     DECLARE_DYNAMIC_CLASS(wxTLWHiddenParentModule)
 116 };
 117
 118 IMPLEMENT_DYNAMIC_CLASS(wxTLWHiddenParentModule, wxModule)
 119
 120 // ============================================================================
 121 // wxTopLevelWindowMSW implementation
 122 // ============================================================================
 123
 124 BEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase)
 125     EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate)
 126 END_EVENT_TABLE()
 127
 128 // ----------------------------------------------------------------------------
 129 // wxTopLevelWindowMSW creation
 130 // ----------------------------------------------------------------------------
 131
 132 void wxTopLevelWindowMSW::Init()
 133 {
 134     m_iconized =
 135     m_maximizeOnShow = false;
 136
 137     // Data to save/restore when calling ShowFullScreen
 138     m_fsStyle = 0;
 139     m_fsOldWindowStyle = 0;
 140     m_fsIsMaximized = false;
 141     m_fsIsShowing = false;
 142
 143     m_winLastFocused = (wxWindow *)NULL;
 144
 145 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 146     m_MenuBarHWND = 0;
 147 #endif
 148
 149 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 150     SHACTIVATEINFO* info = new SHACTIVATEINFO;
 151     wxZeroMemory(*info);
 152     info->cbSize = sizeof(SHACTIVATEINFO);
 153
 154     m_activateInfo = (void*) info;
 155 #endif
 156 }
 157
 158 WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const
 159 {
 160     // let the base class deal with the common styles but fix the ones which
 161     // don't make sense for us (we also deal with the borders ourselves)
 162     WXDWORD msflags = wxWindow::MSWGetStyle
 163                       (
 164                         (style & ~wxBORDER_MASK) | wxBORDER_NONE, exflags
 165                       ) & ~WS_CHILD & ~WS_VISIBLE;
 166
 167     // For some reason, WS_VISIBLE needs to be defined on creation for
 168     // SmartPhone 2003. The title can fail to be displayed otherwise.
 169 #if defined(__SMARTPHONE__) || (defined(__WXWINCE__) && _WIN32_WCE < 400)
 170     msflags |= WS_VISIBLE;
 171     ((wxTopLevelWindowMSW*)this)->wxWindowBase::Show(true);
 172 #endif
 173
 174     // first select the kind of window being created
 175     //
 176     // note that if we don't set WS_POPUP, Windows assumes WS_OVERLAPPED and
 177     // creates a window with both caption and border, hence we need to use
 178     // WS_POPUP in a few cases just to avoid having caption/border which we
 179     // don't want
 180
 181     // border and caption styles
 182     if ( ( style & wxRESIZE_BORDER ) && !IsAlwaysMaximized())
 183         msflags |= WS_THICKFRAME;
 184     else if ( exflags && ((style & wxBORDER_DOUBLE) || (style & wxBORDER_RAISED)) )
 185         *exflags |= WS_EX_DLGMODALFRAME;
 186     else if ( !(style & wxBORDER_NONE) )
 187         msflags |= WS_BORDER;
 188 #ifndef __POCKETPC__
 189     else
 190         msflags |= WS_POPUP;
 191 #endif
 192
 193     // normally we consider that all windows without a caption must be popups,
 194     // but CE is an exception: there windows normally do not have the caption
 195     // but shouldn't be made popups as popups can't have menus and don't look
 196     // like normal windows anyhow
 197
 198     // TODO: Smartphone appears to like wxCAPTION, but we should check that
 199     // we need it.
 200 #if defined(__SMARTPHONE__) || !defined(__WXWINCE__)
 201     if ( style & wxCAPTION )
 202         msflags |= WS_CAPTION;
 203 #ifndef __WXWINCE__
 204     else
 205         msflags |= WS_POPUP;
 206 #endif // !__WXWINCE__
 207 #endif
 208
 209     // next translate the individual flags
 210
 211     // WS_EX_CONTEXTHELP is incompatible with WS_MINIMIZEBOX and WS_MAXIMIZEBOX
 212     // and is ignored if we specify both of them, but chances are that if we
 213     // use wxWS_EX_CONTEXTHELP, we really do want to have the context help
 214     // button while wxMINIMIZE/wxMAXIMIZE are included by default, so the help
 215     // takes precedence
 216     if ( !(GetExtraStyle() & wxWS_EX_CONTEXTHELP) )
 217     {
 218         if ( style & wxMINIMIZE_BOX )
 219             msflags |= WS_MINIMIZEBOX;
 220         if ( style & wxMAXIMIZE_BOX )
 221             msflags |= WS_MAXIMIZEBOX;
 222     }
 223
 224 #ifndef __WXWINCE__
 225     if ( style & wxSYSTEM_MENU )
 226         msflags |= WS_SYSMENU;
 227 #endif
 228
 229     // NB: under CE these 2 styles are not supported currently, we should
 230     //     call Minimize()/Maximize() "manually" if we want to support them
 231     if ( style & wxMINIMIZE )
 232         msflags |= WS_MINIMIZE;
 233
 234     if ( style & wxMAXIMIZE )
 235         msflags |= WS_MAXIMIZE;
 236
 237     // Keep this here because it saves recoding this function in wxTinyFrame
 238     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 239         msflags |= WS_CAPTION;
 240
 241     if ( exflags )
 242     {
 243         // there is no taskbar under CE, so omit all this
 244 #if !defined(__WXWINCE__)
 245         if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) )
 246         {
 247             if ( style & wxFRAME_TOOL_WINDOW )
 248             {
 249                 // create the palette-like window
 250                 *exflags |= WS_EX_TOOLWINDOW;
 251
 252                 // tool windows shouldn't appear on the taskbar (as documented)
 253                 style |= wxFRAME_NO_TASKBAR;
 254             }
 255
 256             // We have to solve 2 different problems here:
 257             //
 258             // 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the
 259             //    taskbar even if they don't have a parent
 260             //
 261             // 2. frames without this style should appear in the taskbar even
 262             //    if they're owned (Windows only puts non owned windows into
 263             //    the taskbar normally)
 264             //
 265             // The second one is solved here by using WS_EX_APPWINDOW flag, the
 266             // first one is dealt with in our MSWGetParent() method
 267             // implementation
 268             if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() )
 269             {
 270                 // need to force the frame to appear in the taskbar
 271                 *exflags |= WS_EX_APPWINDOW;
 272             }
 273             //else: nothing to do [here]
 274         }
 275
 276         if ( GetExtraStyle() & wxWS_EX_CONTEXTHELP )
 277             *exflags |= WS_EX_CONTEXTHELP;
 278 #endif // !__WXWINCE__
 279
 280         if ( style & wxSTAY_ON_TOP )
 281             *exflags |= WS_EX_TOPMOST;
 282     }
 283
 284     return msflags;
 285 }
 286
 287 WXHWND wxTopLevelWindowMSW::MSWGetParent() const
 288 {
 289     // for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL
 290     // parent HWND or it would be always on top of its parent which is not what
 291     // we usually want (in fact, we only want it for frames with the
 292     // wxFRAME_FLOAT_ON_PARENT flag)
 293     HWND hwndParent = NULL;
 294     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 295     {
 296         const wxWindow *parent = GetParent();
 297
 298         if ( !parent )
 299         {
 300             // this flag doesn't make sense then and will be ignored
 301             wxFAIL_MSG( _T("wxFRAME_FLOAT_ON_PARENT but no parent?") );
 302         }
 303         else
 304         {
 305             hwndParent = GetHwndOf(parent);
 306         }
 307     }
 308     //else: don't float on parent, must not be owned
 309
 310     // now deal with the 2nd taskbar-related problem (see comments above in
 311     // MSWGetStyle())
 312     if ( HasFlag(wxFRAME_NO_TASKBAR) && !hwndParent )
 313     {
 314         // use hidden parent
 315         hwndParent = wxTLWHiddenParentModule::GetHWND();
 316     }
 317
 318     return (WXHWND)hwndParent;
 319 }
 320
 321 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 322 bool wxTopLevelWindowMSW::HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam)
 323 {
 324     SHACTIVATEINFO *info = (SHACTIVATEINFO*) m_activateInfo;
 325     if ( info )
 326     {
 327         SHHandleWMSettingChange(GetHwnd(), wParam, lParam, info);
 328     }
 329
 330     return wxWindowMSW::HandleSettingChange(wParam, lParam);
 331 }
 332 #endif
 333
 334 WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 335 {
 336     WXLRESULT rc = 0;
 337     bool processed = false;
 338
 339 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 340     switch ( message )
 341     {
 342         case WM_ACTIVATE:
 343         {
 344             SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
 345             if (info)
 346             {
 347                 DWORD flags = 0;
 348                 if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) flags = SHA_INPUTDIALOG;
 349                 SHHandleWMActivate(GetHwnd(), wParam, lParam, info, flags);
 350             }
 351
 352             // This implicitly sends a wxEVT_ACTIVATE_APP event
 353             if (wxTheApp)
 354                 wxTheApp->SetActive(wParam != 0, FindFocus());
 355
 356             break;
 357         }
 358         case WM_HIBERNATE:
 359         {
 360             if (wxTheApp)
 361             {
 362                 wxActivateEvent event(wxEVT_HIBERNATE, true, wxID_ANY);
 363                 event.SetEventObject(wxTheApp);
 364                 processed = wxTheApp->ProcessEvent(event);
 365             }
 366             break;
 367         }
 368     }
 369 #endif
 370
 371     if ( !processed )
 372         rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam);
 373
 374     return rc;
 375 }
 376
 377 bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
 378                                        const wxString& title,
 379                                        const wxPoint& pos,
 380                                        const wxSize& size)
 381 {
 382 #ifdef __WXMICROWIN__
 383     // no dialogs support under MicroWin yet
 384     return CreateFrame(title, pos, size);
 385 #else // !__WXMICROWIN__
 386     wxWindow *parent = GetParent();
 387
 388     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 389     // app window as parent - this avoids creating modal dialogs without
 390     // parent
 391     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 392     {
 393         parent = wxTheApp->GetTopWindow();
 394
 395         if ( parent )
 396         {
 397             // don't use transient windows as parents, this is dangerous as it
 398             // can lead to a crash if the parent is destroyed before the child
 399             //
 400             // also don't use the window which is currently hidden as then the
 401             // dialog would be hidden as well
 402             if ( (parent->GetExtraStyle() & wxWS_EX_TRANSIENT) ||
 403                     !parent->IsShown() )
 404             {
 405                 parent = NULL;
 406             }
 407         }
 408     }
 409
 410     m_hWnd = (WXHWND)::CreateDialogIndirect
 411                        (
 412                         wxGetInstance(),
 413                         (DLGTEMPLATE*)dlgTemplate,
 414                         parent ? GetHwndOf(parent) : NULL,
 415                         (DLGPROC)wxDlgProc
 416                        );
 417
 418     if ( !m_hWnd )
 419     {
 420         wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?"));
 421
 422         wxLogSysError(wxT("Can't create dialog using memory template"));
 423
 424         return false;
 425     }
 426
 427     WXDWORD exflags;
 428     (void)MSWGetCreateWindowFlags(&exflags);
 429
 430     if ( exflags )
 431     {
 432         ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags);
 433         ::SetWindowPos(GetHwnd(),
 434                        exflags & WS_EX_TOPMOST ? HWND_TOPMOST : 0,
 435                        0, 0, 0, 0,
 436                        SWP_NOSIZE |
 437                        SWP_NOMOVE |
 438                        (exflags & WS_EX_TOPMOST ? 0 : SWP_NOZORDER) |
 439                        SWP_NOACTIVATE);
 440     }
 441
 442 #if !defined(__WXWINCE__)
 443     // For some reason, the system menu is activated when we use the
 444     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 445     if ( exflags & WS_EX_CONTEXTHELP )
 446     {
 447         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 448         if ( winTop )
 449         {
 450             wxIcon icon = winTop->GetIcon();
 451             if ( icon.Ok() )
 452             {
 453                 ::SendMessage(GetHwnd(), WM_SETICON,
 454                               (WPARAM)TRUE,
 455                               (LPARAM)GetHiconOf(icon));
 456             }
 457         }
 458     }
 459 #endif
 460
 461     // move the dialog to its initial position without forcing repainting
 462     int x, y, w, h;
 463     (void)MSWGetCreateWindowCoords(pos, size, x, y, w, h);
 464
 465     if ( x == (int)CW_USEDEFAULT )
 466     {
 467         // centre it on the screen - what else can we do?
 468         wxSize sizeDpy = wxGetDisplaySize();
 469
 470         x = (sizeDpy.x - w) / 2;
 471         y = (sizeDpy.y - h) / 2;
 472     }
 473
 474 #if !defined(__WXWINCE__) || defined(__WINCE_STANDARDSDK__)
 475     if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 476     {
 477         wxLogLastError(wxT("MoveWindow"));
 478     }
 479 #endif
 480
 481     if ( !title.empty() )
 482     {
 483         ::SetWindowText(GetHwnd(), title);
 484     }
 485
 486     SubclassWin(m_hWnd);
 487
 488 #ifdef __SMARTPHONE__
 489     // Work around title non-display glitch
 490     Show(false);
 491 #endif
 492
 493     return true;
 494 #endif // __WXMICROWIN__/!__WXMICROWIN__
 495 }
 496
 497 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 498                                       const wxPoint& pos,
 499                                       const wxSize& size)
 500 {
 501     WXDWORD exflags;
 502     WXDWORD flags = MSWGetCreateWindowFlags(&exflags);
 503
 504     const wxSize sz = IsAlwaysMaximized() ? wxDefaultSize : size;
 505
 506 #ifndef __WXWINCE__
 507     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 508         exflags |= WS_EX_LAYOUTRTL;
 509 #endif
 510
 511     return MSWCreate(wxCanvasClassName, title, pos, sz, flags, exflags);
 512 }
 513
 514 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 515                                  wxWindowID id,
 516                                  const wxString& title,
 517                                  const wxPoint& pos,
 518                                  const wxSize& size,
 519                                  long style,
 520                                  const wxString& name)
 521 {
 522     bool ret wxDUMMY_INITIALIZE(false);
 523
 524     // init our fields
 525     Init();
 526
 527     wxSize sizeReal = size;
 528     if ( !sizeReal.IsFullySpecified() )
 529     {
 530         sizeReal.SetDefaults(GetDefaultSize());
 531     }
 532
 533     m_windowStyle = style;
 534
 535     SetName(name);
 536
 537     m_windowId = id == wxID_ANY ? NewControlId() : id;
 538
 539     wxTopLevelWindows.Append(this);
 540
 541     if ( parent )
 542         parent->AddChild(this);
 543
 544     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 545     {
 546         // we have different dialog templates to allows creation of dialogs
 547         // with & without captions under MSWindows, resizeable or not (but a
 548         // resizeable dialog always has caption - otherwise it would look too
 549         // strange)
 550
 551         // we need 3 additional WORDs for dialog menu, class and title (as we
 552         // don't use DS_SETFONT we don't need the fourth WORD for the font)
 553         static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3);
 554         DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize);
 555         memset(dlgTemplate, 0, dlgsize);
 556
 557         // these values are arbitrary, they won't be used normally anyhow
 558         dlgTemplate->x  = 34;
 559         dlgTemplate->y  = 22;
 560         dlgTemplate->cx = 144;
 561         dlgTemplate->cy = 75;
 562
 563         // reuse the code in MSWGetStyle() but correct the results slightly for
 564         // the dialog
 565         dlgTemplate->style = MSWGetStyle(style, NULL);
 566
 567         // all dialogs are popups
 568         dlgTemplate->style |= WS_POPUP;
 569
 570 #ifndef __WXWINCE__
 571         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 572         {
 573             dlgTemplate->dwExtendedStyle |= WS_EX_LAYOUTRTL;
 574         }
 575
 576         // force 3D-look if necessary, it looks impossibly ugly otherwise
 577         if ( style & (wxRESIZE_BORDER | wxCAPTION) )
 578             dlgTemplate->style |= DS_MODALFRAME;
 579 #endif
 580
 581         ret = CreateDialog(dlgTemplate, title, pos, sizeReal);
 582         free(dlgTemplate);
 583     }
 584     else // !dialog
 585     {
 586         ret = CreateFrame(title, pos, sizeReal);
 587     }
 588
 589 #ifndef __WXWINCE__
 590     if ( ret && !(GetWindowStyleFlag() & wxCLOSE_BOX) )
 591     {
 592         EnableCloseButton(false);
 593     }
 594 #endif
 595
 596     // for standard dialogs the dialog manager generates WM_CHANGEUISTATE
 597     // itself but for custom windows we have to do it ourselves in order to
 598     // make the keyboard indicators (such as underlines for accelerators and
 599     // focus rectangles) work under Win2k+
 600     if ( ret )
 601     {
 602         MSWUpdateUIState(UIS_INITIALIZE);
 603     }
 604
 605     // Note: if we include PocketPC in this test, dialogs can fail to show up,
 606     // for example the text entry dialog in the dialogs sample. Problem with Maximise()?
 607 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__WINCE_STANDARDSDK__))
 608     if ( ( style & wxMAXIMIZE ) || IsAlwaysMaximized() )
 609     {
 610         this->Maximize();
 611     }
 612 #endif
 613
 614 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 615     SetRightMenu(); // to nothing for initialization
 616 #endif
 617
 618     return ret;
 619 }
 620
 621 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 622 {
 623 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 624     SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
 625     delete info;
 626     m_activateInfo = NULL;
 627 #endif
 628
 629     // after destroying an owned window, Windows activates the next top level
 630     // window in Z order but it may be different from our owner (to reproduce
 631     // this simply Alt-TAB to another application and back before closing the
 632     // owned frame) whereas we always want to yield activation to our parent
 633     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 634     {
 635         wxWindow *parent = GetParent();
 636         if ( parent )
 637         {
 638             ::BringWindowToTop(GetHwndOf(parent));
 639         }
 640     }
 641 }
 642
 643 // ----------------------------------------------------------------------------
 644 // wxTopLevelWindowMSW showing
 645 // ----------------------------------------------------------------------------
 646
 647 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 648 {
 649     ::ShowWindow(GetHwnd(), nShowCmd);
 650
 651     m_iconized = nShowCmd == SW_MINIMIZE;
 652 }
 653
 654 bool wxTopLevelWindowMSW::Show(bool show)
 655 {
 656     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 657     if ( !wxWindowBase::Show(show) )
 658         return false;
 659
 660     int nShowCmd;
 661     if ( show )
 662     {
 663         if ( m_maximizeOnShow )
 664         {
 665             // show and maximize
 666             nShowCmd = SW_MAXIMIZE;
 667
 668             // This is necessary, or no window appears
 669 #if defined( __WINCE_STANDARDSDK__) || defined(__SMARTPHONE__)
 670             DoShowWindow(SW_SHOW);
 671 #endif
 672
 673             m_maximizeOnShow = false;
 674         }
 675         else // just show
 676         {
 677            if ( GetWindowStyle() & wxFRAME_TOOL_WINDOW )
 678                nShowCmd = SW_SHOWNA;
 679            else
 680                nShowCmd = SW_SHOW;
 681         }
 682     }
 683     else // hide
 684     {
 685         nShowCmd = SW_HIDE;
 686     }
 687
 688     DoShowWindow(nShowCmd);
 689
 690 #if defined(__WXWINCE__) && (_WIN32_WCE >= 400 && !defined(__POCKETPC__) && !defined(__SMARTPHONE__))
 691     // Addornments have to be added when the frame is the correct size
 692     wxFrame* frame = wxDynamicCast(this, wxFrame);
 693     if (frame && frame->GetMenuBar())
 694         frame->GetMenuBar()->AddAdornments(GetWindowStyleFlag());
 695 #endif
 696
 697     // we only set pending size if we're maximized before being shown, now that
 698     // we're shown we don't need it any more (it is reset in size event handler
 699     // for child windows but we have to do it ourselves for this parent window)
 700     m_pendingSize = wxDefaultSize;
 701
 702     return true;
 703 }
 704
 705 // ----------------------------------------------------------------------------
 706 // wxTopLevelWindowMSW maximize/minimize
 707 // ----------------------------------------------------------------------------
 708
 709 void wxTopLevelWindowMSW::Maximize(bool maximize)
 710 {
 711     if ( IsShown() )
 712     {
 713         // just maximize it directly
 714         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 715     }
 716     else // hidden
 717     {
 718         // we can't maximize the hidden frame because it shows it as well,
 719         // so just remember that we should do it later in this case
 720         m_maximizeOnShow = maximize;
 721
 722         // after calling Maximize() the client code expects to get the frame
 723         // "real" size and doesn't want to know that, because of implementation
 724         // details, the frame isn't really maximized yet but will be only once
 725         // it's shown, so return our size as it will be then in this case
 726         if ( maximize )
 727         {
 728             // we must only change pending size here, and not call SetSize()
 729             // because otherwise Windows would think that this (full screen)
 730             // size is the natural size for the frame and so would use it when
 731             // the user clicks on "restore" title bar button instead of the
 732             // correct initial frame size
 733             //
 734             // NB: unfortunately we don't know which display we're on yet so we
 735             //     have to use the default one
 736             m_pendingSize = wxGetClientDisplayRect().GetSize();
 737         }
 738         //else: can't do anything in this case, we don't have the old size
 739     }
 740 }
 741
 742 bool wxTopLevelWindowMSW::IsMaximized() const
 743 {
 744     return IsAlwaysMaximized() ||
 745 #if !defined(__SMARTPHONE__) && !defined(__POCKETPC__)
 746            (::IsZoomed(GetHwnd()) != 0) ||
 747 #endif
 748            m_maximizeOnShow;
 749 }
 750
 751 void wxTopLevelWindowMSW::Iconize(bool iconize)
 752 {
 753     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 754 }
 755
 756 bool wxTopLevelWindowMSW::IsIconized() const
 757 {
 758 #ifdef __WXWINCE__
 759     return false;
 760 #else
 761     // don't use m_iconized, it may be briefly out of sync with the real state
 762     // as it's only modified when we receive a WM_SIZE and we could be called
 763     // from an event handler from one of the messages we receive before it,
 764     // such as WM_MOVE
 765     return ::IsIconic(GetHwnd()) != 0;
 766 #endif
 767 }
 768
 769 void wxTopLevelWindowMSW::Restore()
 770 {
 771     DoShowWindow(SW_RESTORE);
 772 }
 773
 774 void wxTopLevelWindowMSW::SetLayoutDirection(wxLayoutDirection dir)
 775 {
 776     if ( dir == wxLayout_Default )
 777         dir = wxTheApp->GetLayoutDirection();
 778
 779     if ( dir != wxLayout_Default )
 780         wxTopLevelWindowBase::SetLayoutDirection(dir);
 781 }
 782
 783 // ----------------------------------------------------------------------------
 784 // wxTopLevelWindowMSW geometry
 785 // ----------------------------------------------------------------------------
 786
 787 void wxTopLevelWindowMSW::DoGetPosition(int *x, int *y) const
 788 {
 789     if ( IsIconized() )
 790     {
 791         WINDOWPLACEMENT wp;
 792         wp.length = sizeof(WINDOWPLACEMENT);
 793         if ( ::GetWindowPlacement(GetHwnd(), &wp) )
 794         {
 795             RECT& rc = wp.rcNormalPosition;
 796
 797             // the position returned by GetWindowPlacement() is in workspace
 798             // coordinates except for windows with WS_EX_TOOLWINDOW style
 799             if ( !HasFlag(wxFRAME_TOOL_WINDOW) )
 800             {
 801                 // we must use the correct display for the translation as the
 802                 // task bar might be shown on one display but not the other one
 803                 int n = wxDisplay::GetFromWindow(this);
 804                 wxDisplay dpy(n == wxNOT_FOUND ? 0 : n);
 805                 const wxPoint ptOfs = dpy.GetClientArea().GetPosition() -
 806                                       dpy.GetGeometry().GetPosition();
 807
 808                 rc.left += ptOfs.x;
 809                 rc.top += ptOfs.y;
 810             }
 811
 812             if ( x )
 813                 *x = rc.left;
 814             if ( y )
 815                 *y = rc.top;
 816
 817             return;
 818         }
 819
 820         wxLogLastError(_T("GetWindowPlacement"));
 821     }
 822     //else: normal case
 823
 824     wxTopLevelWindowBase::DoGetPosition(x, y);
 825 }
 826
 827 void wxTopLevelWindowMSW::DoGetSize(int *width, int *height) const
 828 {
 829     if ( IsIconized() )
 830     {
 831         WINDOWPLACEMENT wp;
 832         wp.length = sizeof(WINDOWPLACEMENT);
 833         if ( ::GetWindowPlacement(GetHwnd(), &wp) )
 834         {
 835             const RECT& rc = wp.rcNormalPosition;
 836
 837             if ( width )
 838                 *width = rc.right - rc.left;
 839             if ( height )
 840                 *height = rc.bottom - rc.top;
 841
 842             return;
 843         }
 844
 845         wxLogLastError(_T("GetWindowPlacement"));
 846     }
 847     //else: normal case
 848
 849     wxTopLevelWindowBase::DoGetSize(width, height);
 850 }
 851
 852 // ----------------------------------------------------------------------------
 853 // wxTopLevelWindowMSW fullscreen
 854 // ----------------------------------------------------------------------------
 855
 856 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 857 {
 858     if ( show == IsFullScreen() )
 859     {
 860         // nothing to do
 861         return true;
 862     }
 863
 864     m_fsIsShowing = show;
 865
 866     if ( show )
 867     {
 868         m_fsStyle = style;
 869
 870         // zap the frame borders
 871
 872         // save the 'normal' window style
 873         m_fsOldWindowStyle = GetWindowLong(GetHwnd(), GWL_STYLE);
 874
 875         // save the old position, width & height, maximize state
 876         m_fsOldSize = GetRect();
 877         m_fsIsMaximized = IsMaximized();
 878
 879         // decide which window style flags to turn off
 880         LONG newStyle = m_fsOldWindowStyle;
 881         LONG offFlags = 0;
 882
 883         if (style & wxFULLSCREEN_NOBORDER)
 884         {
 885             offFlags |= WS_BORDER;
 886 #ifndef __WXWINCE__
 887             offFlags |= WS_THICKFRAME;
 888 #endif
 889         }
 890         if (style & wxFULLSCREEN_NOCAPTION)
 891             offFlags |= WS_CAPTION | WS_SYSMENU;
 892
 893         newStyle &= ~offFlags;
 894
 895         // change our window style to be compatible with full-screen mode
 896         ::SetWindowLong(GetHwnd(), GWL_STYLE, newStyle);
 897
 898         wxRect rect;
 899 #if wxUSE_DISPLAY
 900         // resize to the size of the display containing us
 901         int dpy = wxDisplay::GetFromWindow(this);
 902         if ( dpy != wxNOT_FOUND )
 903         {
 904             rect = wxDisplay(dpy).GetGeometry();
 905         }
 906         else // fall back to the main desktop
 907 #endif // wxUSE_DISPLAY
 908         {
 909             // resize to the size of the desktop
 910             wxCopyRECTToRect(wxGetWindowRect(::GetDesktopWindow()), rect);
 911 #ifdef __WXWINCE__
 912             // FIXME: size of the bottom menu (toolbar)
 913             // should be taken in account
 914             rect.height += rect.y;
 915             rect.y       = 0;
 916 #endif
 917         }
 918
 919         SetSize(rect);
 920
 921         // now flush the window style cache and actually go full-screen
 922         long flags = SWP_FRAMECHANGED;
 923
 924         // showing the frame full screen should also show it if it's still
 925         // hidden
 926         if ( !IsShown() )
 927         {
 928             // don't call wxWindow version to avoid flicker from calling
 929             // ::ShowWindow() -- we're going to show the window at the correct
 930             // location directly below -- but do call the wxWindowBase version
 931             // to sync the internal m_isShown flag
 932             wxWindowBase::Show();
 933
 934             flags |= SWP_SHOWWINDOW;
 935         }
 936
 937         SetWindowPos(GetHwnd(), HWND_TOP,
 938                      rect.x, rect.y, rect.width, rect.height,
 939                      flags);
 940
 941 #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400))
 942         ::SHFullScreen(GetHwnd(), SHFS_HIDETASKBAR | SHFS_HIDESIPBUTTON);
 943 #endif
 944
 945         // finally send an event allowing the window to relayout itself &c
 946         wxSizeEvent event(rect.GetSize(), GetId());
 947         GetEventHandler()->ProcessEvent(event);
 948     }
 949     else // stop showing full screen
 950     {
 951 #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400))
 952         ::SHFullScreen(GetHwnd(), SHFS_SHOWTASKBAR | SHFS_SHOWSIPBUTTON);
 953 #endif
 954         Maximize(m_fsIsMaximized);
 955         SetWindowLong(GetHwnd(),GWL_STYLE, m_fsOldWindowStyle);
 956         SetWindowPos(GetHwnd(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 957             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 958     }
 959
 960     return true;
 961 }
 962
 963 // ----------------------------------------------------------------------------
 964 // wxTopLevelWindowMSW misc
 965 // ----------------------------------------------------------------------------
 966
 967 void wxTopLevelWindowMSW::SetTitle( const wxString& title)
 968 {
 969     SetLabel(title);
 970 }
 971
 972 wxString wxTopLevelWindowMSW::GetTitle() const
 973 {
 974     return GetLabel();
 975 }
 976
 977 void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon)
 978 {
 979     SetIcons( wxIconBundle( icon ) );
 980 }
 981
 982 void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons)
 983 {
 984     wxTopLevelWindowBase::SetIcons(icons);
 985
 986 #if !defined(__WXMICROWIN__)
 987     const wxIcon& sml = icons.GetIcon( wxSize( 16, 16 ) );
 988     if( sml.Ok() && sml.GetWidth() == 16 && sml.GetHeight() == 16 )
 989     {
 990         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_SMALL,
 991                        (LPARAM)GetHiconOf(sml) );
 992     }
 993
 994     const wxIcon& big = icons.GetIcon( wxSize( 32, 32 ) );
 995     if( big.Ok() && big.GetWidth() == 32 && big.GetHeight() == 32 )
 996     {
 997         ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_BIG,
 998                        (LPARAM)GetHiconOf(big) );
 999     }
1000 #endif // !__WXMICROWIN__
1001 }
1002
1003 bool wxTopLevelWindowMSW::EnableCloseButton(bool enable)
1004 {
1005 #if !defined(__WXMICROWIN__)
1006     // get system (a.k.a. window) menu
1007     HMENU hmenu = GetSystemMenu(GetHwnd(), FALSE /* get it */);
1008     if ( !hmenu )
1009     {
1010         // no system menu at all -- ok if we want to remove the close button
1011         // anyhow, but bad if we want to show it
1012         return !enable;
1013     }
1014
1015     // enabling/disabling the close item from it also automatically
1016     // disables/enables the close title bar button
1017     if ( ::EnableMenuItem(hmenu, SC_CLOSE,
1018                           MF_BYCOMMAND |
1019                           (enable ? MF_ENABLED : MF_GRAYED)) == -1 )
1020     {
1021         wxLogLastError(_T("EnableMenuItem(SC_CLOSE)"));
1022
1023         return false;
1024     }
1025 #ifndef __WXWINCE__
1026     // update appearance immediately
1027     if ( !::DrawMenuBar(GetHwnd()) )
1028     {
1029         wxLogLastError(_T("DrawMenuBar"));
1030     }
1031 #endif
1032 #endif // !__WXMICROWIN__
1033
1034     return true;
1035 }
1036
1037 #ifndef __WXWINCE__
1038
1039 bool wxTopLevelWindowMSW::SetShape(const wxRegion& region)
1040 {
1041     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1042                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1043
1044     // The empty region signifies that the shape should be removed from the
1045     // window.
1046     if ( region.IsEmpty() )
1047     {
1048         if (::SetWindowRgn(GetHwnd(), NULL, TRUE) == 0)
1049         {
1050             wxLogLastError(_T("SetWindowRgn"));
1051             return false;
1052         }
1053         return true;
1054     }
1055
1056     // Windows takes ownership of the region, so
1057     // we'll have to make a copy of the region to give to it.
1058     DWORD noBytes = ::GetRegionData(GetHrgnOf(region), 0, NULL);
1059     RGNDATA *rgnData = (RGNDATA*) new char[noBytes];
1060     ::GetRegionData(GetHrgnOf(region), noBytes, rgnData);
1061     HRGN hrgn = ::ExtCreateRegion(NULL, noBytes, rgnData);
1062     delete[] (char*) rgnData;
1063
1064     // SetWindowRgn expects the region to be in coordinants
1065     // relative to the window, not the client area.  Figure
1066     // out the offset, if any.
1067     RECT rect;
1068     DWORD dwStyle =   ::GetWindowLong(GetHwnd(), GWL_STYLE);
1069     DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1070     ::GetClientRect(GetHwnd(), &rect);
1071     ::AdjustWindowRectEx(&rect, dwStyle, FALSE, dwExStyle);
1072     ::OffsetRgn(hrgn, -rect.left, -rect.top);
1073
1074     // Now call the shape API with the new region.
1075     if (::SetWindowRgn(GetHwnd(), hrgn, TRUE) == 0)
1076     {
1077         wxLogLastError(_T("SetWindowRgn"));
1078         return false;
1079     }
1080     return true;
1081 }
1082
1083 #endif // !__WXWINCE__
1084
1085 void wxTopLevelWindowMSW::RequestUserAttention(int flags)
1086 {
1087     // check if we can use FlashWindowEx(): unfortunately a simple test for
1088     // FLASHW_STOP doesn't work because MSVC6 headers do #define it but don't
1089     // provide FlashWindowEx() declaration, so try to detect whether we have
1090     // real headers for WINVER 0x0500 by checking for existence of a symbol not
1091     // declated in MSVC6 header
1092 #if defined(FLASHW_STOP) && defined(VK_XBUTTON1)
1093     // available in the headers, check if it is supported by the system
1094     typedef BOOL (WINAPI *FlashWindowEx_t)(FLASHWINFO *pfwi);
1095     FlashWindowEx_t s_pfnFlashWindowEx = NULL;
1096     if ( !s_pfnFlashWindowEx )
1097     {
1098         wxDynamicLibrary dllUser32(_T("user32.dll"));
1099         s_pfnFlashWindowEx = (FlashWindowEx_t)
1100                                 dllUser32.GetSymbol(_T("FlashWindowEx"));
1101
1102         // we can safely unload user32.dll here, it's going to remain loaded as
1103         // long as the program is running anyhow
1104     }
1105
1106     if ( s_pfnFlashWindowEx )
1107     {
1108         WinStruct<FLASHWINFO> fwi;
1109         fwi.hwnd = GetHwnd();
1110         fwi.dwFlags = FLASHW_ALL;
1111         if ( flags & wxUSER_ATTENTION_INFO )
1112         {
1113             // just flash a few times
1114             fwi.uCount = 3;
1115         }
1116         else // wxUSER_ATTENTION_ERROR
1117         {
1118             // flash until the user notices it
1119             fwi.dwFlags |= FLASHW_TIMERNOFG;
1120         }
1121
1122         s_pfnFlashWindowEx(&fwi);
1123     }
1124     else // FlashWindowEx() not available
1125 #endif // FlashWindowEx() defined
1126     {
1127         wxUnusedVar(flags);
1128 #ifndef __WXWINCE__
1129         ::FlashWindow(GetHwnd(), TRUE);
1130 #endif // __WXWINCE__
1131     }
1132 }
1133
1134 // ---------------------------------------------------------------------------
1135
1136 bool wxTopLevelWindowMSW::SetTransparent(wxByte alpha)
1137 {
1138     typedef DWORD (WINAPI *PSETLAYEREDWINDOWATTR)(HWND, DWORD, BYTE, DWORD);
1139     static PSETLAYEREDWINDOWATTR pSetLayeredWindowAttributes = NULL;
1140
1141     if ( pSetLayeredWindowAttributes == NULL )
1142     {
1143         wxDynamicLibrary dllUser32(_T("user32.dll"));
1144         pSetLayeredWindowAttributes = (PSETLAYEREDWINDOWATTR)
1145             dllUser32.GetSymbol(wxT("SetLayeredWindowAttributes"));
1146     }
1147     if ( pSetLayeredWindowAttributes == NULL )
1148         return false;
1149
1150     LONG exstyle = GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1151
1152     // if setting alpha to fully opaque then turn off the layered style
1153     if (alpha == 255)
1154     {
1155         SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle & ~WS_EX_LAYERED);
1156         Refresh();
1157         return true;
1158     }
1159
1160     // Otherwise, set the layered style if needed and set the alpha value
1161     if ((exstyle & WS_EX_LAYERED) == 0 )
1162         SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle | WS_EX_LAYERED);
1163
1164     return pSetLayeredWindowAttributes(GetHwnd(), 0, (BYTE)alpha, LWA_ALPHA) != 0;
1165 }
1166
1167 bool wxTopLevelWindowMSW::CanSetTransparent()
1168 {
1169     // The API is available on win2k and above
1170
1171     static int os_type = -1;
1172     static int ver_major = -1;
1173
1174     if (os_type == -1)
1175         os_type = ::wxGetOsVersion(&ver_major);
1176
1177     return (os_type == wxOS_WINDOWS_NT && ver_major >= 5);
1178 }
1179
1180 // ----------------------------------------------------------------------------
1181 // wxTopLevelWindow event handling
1182 // ----------------------------------------------------------------------------
1183
1184 // Default activation behaviour - set the focus for the first child
1185 // subwindow found.
1186 void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
1187 {
1188     if ( event.GetActive() )
1189     {
1190         // restore focus to the child which was last focused unless we already
1191         // have it
1192         wxLogTrace(_T("focus"), _T("wxTLW %08x activated."), (int) m_hWnd);
1193
1194         wxWindow *winFocus = FindFocus();
1195         if ( !winFocus || wxGetTopLevelParent(winFocus) != this )
1196         {
1197             wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent()
1198                                                 : NULL;
1199             if ( !parent )
1200             {
1201                 parent = this;
1202             }
1203
1204             wxSetFocusToChild(parent, &m_winLastFocused);
1205         }
1206     }
1207     else // deactivating
1208     {
1209         // remember the last focused child if it is our child
1210         m_winLastFocused = FindFocus();
1211
1212         if ( m_winLastFocused )
1213         {
1214             // let it know that it doesn't have focus any more
1215             m_winLastFocused->HandleKillFocus((WXHWND)NULL);
1216
1217             // and don't remember it if it's a child from some other frame
1218             if ( wxGetTopLevelParent(m_winLastFocused) != this )
1219             {
1220                 m_winLastFocused = NULL;
1221             }
1222         }
1223
1224         wxLogTrace(_T("focus"),
1225                    _T("wxTLW %08x deactivated, last focused: %08x."),
1226                    (int) m_hWnd,
1227                    (int) (m_winLastFocused ? GetHwndOf(m_winLastFocused)
1228                                            : NULL));
1229
1230         event.Skip();
1231     }
1232 }
1233
1234 // the DialogProc for all wxWidgets dialogs
1235 LONG APIENTRY _EXPORT
1236 wxDlgProc(HWND hDlg,
1237           UINT message,
1238           WPARAM WXUNUSED(wParam),
1239           LPARAM WXUNUSED(lParam))
1240 {
1241     switch ( message )
1242     {
1243         case WM_INITDIALOG:
1244         {
1245             // under CE, add a "Ok" button in the dialog title bar and make it full
1246             // screen
1247             //
1248             // TODO: find the window for this HWND, and take into account
1249             // wxMAXIMIZE and wxCLOSE_BOX. For now, assume both are present.
1250             //
1251             // Standard SDK doesn't have aygshell.dll: see
1252             // include/wx/msw/wince/libraries.h
1253 #if defined(__WXWINCE__) && !defined(__WINCE_STANDARDSDK__) && !defined(__HANDHELDPC__)
1254             SHINITDLGINFO shidi;
1255             shidi.dwMask = SHIDIM_FLAGS;
1256             shidi.dwFlags = SHIDIF_SIZEDLG // take account of the SIP or menubar
1257 #ifndef __SMARTPHONE__
1258                             | SHIDIF_DONEBUTTON
1259 #endif
1260                         ;
1261             shidi.hDlg = hDlg;
1262             SHInitDialog( &shidi );
1263 #else // no SHInitDialog()
1264             wxUnusedVar(hDlg);
1265 #endif
1266             // for WM_INITDIALOG, returning TRUE tells system to set focus to
1267             // the first control in the dialog box, but as we set the focus
1268             // ourselves, we return FALSE for it as well
1269             return FALSE;
1270         }
1271     }
1272
1273     // for almost all messages, returning FALSE means that we didn't process
1274     // the message
1275     return FALSE;
1276 }
1277
1278 // ============================================================================
1279 // wxTLWHiddenParentModule implementation
1280 // ============================================================================
1281
1282 HWND wxTLWHiddenParentModule::ms_hwnd = NULL;
1283
1284 const wxChar *wxTLWHiddenParentModule::ms_className = NULL;
1285
1286 bool wxTLWHiddenParentModule::OnInit()
1287 {
1288     ms_hwnd = NULL;
1289     ms_className = NULL;
1290
1291     return true;
1292 }
1293
1294 void wxTLWHiddenParentModule::OnExit()
1295 {
1296     if ( ms_hwnd )
1297     {
1298         if ( !::DestroyWindow(ms_hwnd) )
1299         {
1300             wxLogLastError(_T("DestroyWindow(hidden TLW parent)"));
1301         }
1302
1303         ms_hwnd = NULL;
1304     }
1305
1306     if ( ms_className )
1307     {
1308         if ( !::UnregisterClass(ms_className, wxGetInstance()) )
1309         {
1310             wxLogLastError(_T("UnregisterClass(\"wxTLWHiddenParent\")"));
1311         }
1312
1313         ms_className = NULL;
1314     }
1315 }
1316
1317 /* static */
1318 HWND wxTLWHiddenParentModule::GetHWND()
1319 {
1320     if ( !ms_hwnd )
1321     {
1322         if ( !ms_className )
1323         {
1324             static const wxChar *HIDDEN_PARENT_CLASS = _T("wxTLWHiddenParent");
1325
1326             WNDCLASS wndclass;
1327             wxZeroMemory(wndclass);
1328
1329             wndclass.lpfnWndProc   = DefWindowProc;
1330             wndclass.hInstance     = wxGetInstance();
1331             wndclass.lpszClassName = HIDDEN_PARENT_CLASS;
1332
1333             if ( !::RegisterClass(&wndclass) )
1334             {
1335                 wxLogLastError(_T("RegisterClass(\"wxTLWHiddenParent\")"));
1336             }
1337             else
1338             {
1339                 ms_className = HIDDEN_PARENT_CLASS;
1340             }
1341         }
1342
1343         ms_hwnd = ::CreateWindow(ms_className, wxEmptyString, 0, 0, 0, 0, 0, NULL,
1344                                  (HMENU)NULL, wxGetInstance(), NULL);
1345         if ( !ms_hwnd )
1346         {
1347             wxLogLastError(_T("CreateWindow(hidden TLW parent)"));
1348         }
1349     }
1350
1351     return ms_hwnd;
1352 }