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     // notice that if wxCLOSE_BOX is specified we need to use WS_SYSMENU too as
 225     // otherwise the close box doesn't appear
 226     if ( style & (wxSYSTEM_MENU | wxCLOSE_BOX) )
 227         msflags |= WS_SYSMENU;
 228 #endif // !__WXWINCE__
 229
 230     // NB: under CE these 2 styles are not supported currently, we should
 231     //     call Minimize()/Maximize() "manually" if we want to support them
 232     if ( style & wxMINIMIZE )
 233         msflags |= WS_MINIMIZE;
 234
 235     if ( style & wxMAXIMIZE )
 236         msflags |= WS_MAXIMIZE;
 237
 238     // Keep this here because it saves recoding this function in wxTinyFrame
 239     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 240         msflags |= WS_CAPTION;
 241
 242     if ( exflags )
 243     {
 244         // there is no taskbar under CE, so omit all this
 245 #if !defined(__WXWINCE__)
 246         if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) )
 247         {
 248             if ( style & wxFRAME_TOOL_WINDOW )
 249             {
 250                 // create the palette-like window
 251                 *exflags |= WS_EX_TOOLWINDOW;
 252
 253                 // tool windows shouldn't appear on the taskbar (as documented)
 254                 style |= wxFRAME_NO_TASKBAR;
 255             }
 256
 257             // We have to solve 2 different problems here:
 258             //
 259             // 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the
 260             //    taskbar even if they don't have a parent
 261             //
 262             // 2. frames without this style should appear in the taskbar even
 263             //    if they're owned (Windows only puts non owned windows into
 264             //    the taskbar normally)
 265             //
 266             // The second one is solved here by using WS_EX_APPWINDOW flag, the
 267             // first one is dealt with in our MSWGetParent() method
 268             // implementation
 269             if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() )
 270             {
 271                 // need to force the frame to appear in the taskbar
 272                 *exflags |= WS_EX_APPWINDOW;
 273             }
 274             //else: nothing to do [here]
 275         }
 276
 277         if ( GetExtraStyle() & wxWS_EX_CONTEXTHELP )
 278             *exflags |= WS_EX_CONTEXTHELP;
 279 #endif // !__WXWINCE__
 280
 281         if ( style & wxSTAY_ON_TOP )
 282             *exflags |= WS_EX_TOPMOST;
 283     }
 284
 285     return msflags;
 286 }
 287
 288 WXHWND wxTopLevelWindowMSW::MSWGetParent() const
 289 {
 290     // for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL
 291     // parent HWND or it would be always on top of its parent which is not what
 292     // we usually want (in fact, we only want it for frames with the
 293     // wxFRAME_FLOAT_ON_PARENT flag)
 294     HWND hwndParent = NULL;
 295     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 296     {
 297         const wxWindow *parent = GetParent();
 298
 299         if ( !parent )
 300         {
 301             // this flag doesn't make sense then and will be ignored
 302             wxFAIL_MSG( _T("wxFRAME_FLOAT_ON_PARENT but no parent?") );
 303         }
 304         else
 305         {
 306             hwndParent = GetHwndOf(parent);
 307         }
 308     }
 309     //else: don't float on parent, must not be owned
 310
 311     // now deal with the 2nd taskbar-related problem (see comments above in
 312     // MSWGetStyle())
 313     if ( HasFlag(wxFRAME_NO_TASKBAR) && !hwndParent )
 314     {
 315         // use hidden parent
 316         hwndParent = wxTLWHiddenParentModule::GetHWND();
 317     }
 318
 319     return (WXHWND)hwndParent;
 320 }
 321
 322 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 323 bool wxTopLevelWindowMSW::HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam)
 324 {
 325     SHACTIVATEINFO *info = (SHACTIVATEINFO*) m_activateInfo;
 326     if ( info )
 327     {
 328         SHHandleWMSettingChange(GetHwnd(), wParam, lParam, info);
 329     }
 330
 331     return wxWindowMSW::HandleSettingChange(wParam, lParam);
 332 }
 333 #endif
 334
 335 WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 336 {
 337     WXLRESULT rc = 0;
 338     bool processed = false;
 339
 340 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 341     switch ( message )
 342     {
 343         case WM_ACTIVATE:
 344         {
 345             SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
 346             if (info)
 347             {
 348                 DWORD flags = 0;
 349                 if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) flags = SHA_INPUTDIALOG;
 350                 SHHandleWMActivate(GetHwnd(), wParam, lParam, info, flags);
 351             }
 352
 353             // This implicitly sends a wxEVT_ACTIVATE_APP event
 354             if (wxTheApp)
 355                 wxTheApp->SetActive(wParam != 0, FindFocus());
 356
 357             break;
 358         }
 359         case WM_HIBERNATE:
 360         {
 361             if (wxTheApp)
 362             {
 363                 wxActivateEvent event(wxEVT_HIBERNATE, true, wxID_ANY);
 364                 event.SetEventObject(wxTheApp);
 365                 processed = wxTheApp->ProcessEvent(event);
 366             }
 367             break;
 368         }
 369     }
 370 #endif
 371
 372     if ( !processed )
 373         rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam);
 374
 375     return rc;
 376 }
 377
 378 bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
 379                                        const wxString& title,
 380                                        const wxPoint& pos,
 381                                        const wxSize& size)
 382 {
 383 #ifdef __WXMICROWIN__
 384     // no dialogs support under MicroWin yet
 385     return CreateFrame(title, pos, size);
 386 #else // !__WXMICROWIN__
 387     wxWindow *parent = GetParent();
 388
 389     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 390     // app window as parent - this avoids creating modal dialogs without
 391     // parent
 392     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 393     {
 394         parent = wxTheApp->GetTopWindow();
 395
 396         if ( parent )
 397         {
 398             // don't use transient windows as parents, this is dangerous as it
 399             // can lead to a crash if the parent is destroyed before the child
 400             //
 401             // also don't use the window which is currently hidden as then the
 402             // dialog would be hidden as well
 403             if ( (parent->GetExtraStyle() & wxWS_EX_TRANSIENT) ||
 404                     !parent->IsShown() )
 405             {
 406                 parent = NULL;
 407             }
 408         }
 409     }
 410
 411     m_hWnd = (WXHWND)::CreateDialogIndirect
 412                        (
 413                         wxGetInstance(),
 414                         (DLGTEMPLATE*)dlgTemplate,
 415                         parent ? GetHwndOf(parent) : NULL,
 416                         (DLGPROC)wxDlgProc
 417                        );
 418
 419     if ( !m_hWnd )
 420     {
 421         wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?"));
 422
 423         wxLogSysError(wxT("Can't create dialog using memory template"));
 424
 425         return false;
 426     }
 427
 428 #if !defined(__WXWINCE__)
 429     // For some reason, the system menu is activated when we use the
 430     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 431     if ( HasExtraStyle(wxWS_EX_CONTEXTHELP) )
 432     {
 433         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 434         if ( winTop )
 435         {
 436             wxIcon icon = winTop->GetIcon();
 437             if ( icon.Ok() )
 438             {
 439                 ::SendMessage(GetHwnd(), WM_SETICON,
 440                               (WPARAM)TRUE,
 441                               (LPARAM)GetHiconOf(icon));
 442             }
 443         }
 444     }
 445 #endif // !__WXWINCE__
 446
 447     // move the dialog to its initial position without forcing repainting
 448     int x, y, w, h;
 449     (void)MSWGetCreateWindowCoords(pos, size, x, y, w, h);
 450
 451     if ( x == (int)CW_USEDEFAULT )
 452     {
 453         // centre it on the screen - what else can we do?
 454         wxSize sizeDpy = wxGetDisplaySize();
 455
 456         x = (sizeDpy.x - w) / 2;
 457         y = (sizeDpy.y - h) / 2;
 458     }
 459
 460 #if !defined(__WXWINCE__) || defined(__WINCE_STANDARDSDK__)
 461     if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 462     {
 463         wxLogLastError(wxT("MoveWindow"));
 464     }
 465 #endif
 466
 467     if ( !title.empty() )
 468     {
 469         ::SetWindowText(GetHwnd(), title.wx_str());
 470     }
 471
 472     SubclassWin(m_hWnd);
 473
 474 #ifdef __SMARTPHONE__
 475     // Work around title non-display glitch
 476     Show(false);
 477 #endif
 478
 479     return true;
 480 #endif // __WXMICROWIN__/!__WXMICROWIN__
 481 }
 482
 483 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 484                                       const wxPoint& pos,
 485                                       const wxSize& size)
 486 {
 487     WXDWORD exflags;
 488     WXDWORD flags = MSWGetCreateWindowFlags(&exflags);
 489
 490     const wxSize sz = IsAlwaysMaximized() ? wxDefaultSize : size;
 491
 492 #ifndef __WXWINCE__
 493     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 494         exflags |= WS_EX_LAYOUTRTL;
 495 #endif
 496
 497     return MSWCreate(wxCanvasClassName, title.wx_str(), pos, sz, flags, exflags);
 498 }
 499
 500 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 501                                  wxWindowID id,
 502                                  const wxString& title,
 503                                  const wxPoint& pos,
 504                                  const wxSize& size,
 505                                  long style,
 506                                  const wxString& name)
 507 {
 508     bool ret wxDUMMY_INITIALIZE(false);
 509
 510     wxSize sizeReal = size;
 511     if ( !sizeReal.IsFullySpecified() )
 512     {
 513         sizeReal.SetDefaults(GetDefaultSize());
 514     }
 515
 516     m_windowStyle = style;
 517
 518     SetName(name);
 519
 520     m_windowId = id == wxID_ANY ? NewControlId() : id;
 521
 522     wxTopLevelWindows.Append(this);
 523
 524     if ( parent )
 525         parent->AddChild(this);
 526
 527     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 528     {
 529         // we have different dialog templates to allows creation of dialogs
 530         // with & without captions under MSWindows, resizeable or not (but a
 531         // resizeable dialog always has caption - otherwise it would look too
 532         // strange)
 533
 534         // we need 3 additional WORDs for dialog menu, class and title (as we
 535         // don't use DS_SETFONT we don't need the fourth WORD for the font)
 536         static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3);
 537         DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize);
 538         memset(dlgTemplate, 0, dlgsize);
 539
 540         // these values are arbitrary, they won't be used normally anyhow
 541         dlgTemplate->x  = 34;
 542         dlgTemplate->y  = 22;
 543         dlgTemplate->cx = 144;
 544         dlgTemplate->cy = 75;
 545
 546         // reuse the code in MSWGetStyle() but correct the results slightly for
 547         // the dialog
 548         dlgTemplate->style = MSWGetStyle(style, &dlgTemplate->dwExtendedStyle);
 549
 550         // all dialogs are popups
 551         dlgTemplate->style |= WS_POPUP;
 552
 553 #ifndef __WXWINCE__
 554         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 555         {
 556             dlgTemplate->dwExtendedStyle |= WS_EX_LAYOUTRTL;
 557         }
 558
 559         // force 3D-look if necessary, it looks impossibly ugly otherwise
 560         if ( style & (wxRESIZE_BORDER | wxCAPTION) )
 561             dlgTemplate->style |= DS_MODALFRAME;
 562 #endif
 563
 564         ret = CreateDialog(dlgTemplate, title, pos, sizeReal);
 565         free(dlgTemplate);
 566     }
 567     else // !dialog
 568     {
 569         ret = CreateFrame(title, pos, sizeReal);
 570     }
 571
 572 #ifndef __WXWINCE__
 573     if ( ret && !(GetWindowStyleFlag() & wxCLOSE_BOX) )
 574     {
 575         EnableCloseButton(false);
 576     }
 577 #endif
 578
 579     // for standard dialogs the dialog manager generates WM_CHANGEUISTATE
 580     // itself but for custom windows we have to do it ourselves in order to
 581     // make the keyboard indicators (such as underlines for accelerators and
 582     // focus rectangles) work under Win2k+
 583     if ( ret )
 584     {
 585         MSWUpdateUIState(UIS_INITIALIZE);
 586     }
 587
 588     // Note: if we include PocketPC in this test, dialogs can fail to show up,
 589     // for example the text entry dialog in the dialogs sample. Problem with Maximise()?
 590 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__WINCE_STANDARDSDK__))
 591     if ( ( style & wxMAXIMIZE ) || IsAlwaysMaximized() )
 592     {
 593         this->Maximize();
 594     }
 595 #endif
 596
 597 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 598     SetRightMenu(); // to nothing for initialization
 599 #endif
 600
 601     return ret;
 602 }
 603
 604 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 605 {
 606 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
 607     SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
 608     delete info;
 609     m_activateInfo = NULL;
 610 #endif
 611
 612     // after destroying an owned window, Windows activates the next top level
 613     // window in Z order but it may be different from our owner (to reproduce
 614     // this simply Alt-TAB to another application and back before closing the
 615     // owned frame) whereas we always want to yield activation to our parent
 616     if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
 617     {
 618         wxWindow *parent = GetParent();
 619         if ( parent )
 620         {
 621             ::BringWindowToTop(GetHwndOf(parent));
 622         }
 623     }
 624 }
 625
 626 // ----------------------------------------------------------------------------
 627 // wxTopLevelWindowMSW showing
 628 // ----------------------------------------------------------------------------
 629
 630 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 631 {
 632     ::ShowWindow(GetHwnd(), nShowCmd);
 633
 634     m_iconized = nShowCmd == SW_MINIMIZE;
 635 }
 636
 637 bool wxTopLevelWindowMSW::Show(bool show)
 638 {
 639     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 640     if ( !wxWindowBase::Show(show) )
 641         return false;
 642
 643     int nShowCmd;
 644     if ( show )
 645     {
 646         if ( m_maximizeOnShow )
 647         {
 648             // show and maximize
 649             nShowCmd = SW_MAXIMIZE;
 650
 651             // This is necessary, or no window appears
 652 #if defined( __WINCE_STANDARDSDK__) || defined(__SMARTPHONE__)
 653             DoShowWindow(SW_SHOW);
 654 #endif
 655
 656             m_maximizeOnShow = false;
 657         }
 658         else // just show
 659         {
 660             // we shouldn't use SW_SHOW which also activates the window for
 661             // tool frames (as they shouldn't steal focus from the main window)
 662             // nor for the currently disabled windows as they would be enabled
 663             // as a side effect
 664             if ( HasFlag(wxFRAME_TOOL_WINDOW) || !IsEnabled() )
 665                 nShowCmd = SW_SHOWNA;
 666             else
 667                 nShowCmd = SW_SHOW;
 668         }
 669     }
 670     else // hide
 671     {
 672         nShowCmd = SW_HIDE;
 673     }
 674
 675     DoShowWindow(nShowCmd);
 676
 677 #if defined(__WXWINCE__) && (_WIN32_WCE >= 400 && !defined(__POCKETPC__) && !defined(__SMARTPHONE__))
 678     // Addornments have to be added when the frame is the correct size
 679     wxFrame* frame = wxDynamicCast(this, wxFrame);
 680     if (frame && frame->GetMenuBar())
 681         frame->GetMenuBar()->AddAdornments(GetWindowStyleFlag());
 682 #endif
 683
 684     // we only set pending size if we're maximized before being shown, now that
 685     // we're shown we don't need it any more (it is reset in size event handler
 686     // for child windows but we have to do it ourselves for this parent window)
 687     m_pendingSize = wxDefaultSize;
 688
 689     return true;
 690 }
 691
 692 // ----------------------------------------------------------------------------
 693 // wxTopLevelWindowMSW maximize/minimize
 694 // ----------------------------------------------------------------------------
 695
 696 void wxTopLevelWindowMSW::Maximize(bool maximize)
 697 {
 698     if ( IsShown() )
 699     {
 700         // just maximize it directly
 701         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 702     }
 703     else // hidden
 704     {
 705         // we can't maximize the hidden frame because it shows it as well,
 706         // so just remember that we should do it later in this case
 707         m_maximizeOnShow = maximize;
 708
 709         // after calling Maximize() the client code expects to get the frame
 710         // "real" size and doesn't want to know that, because of implementation
 711         // details, the frame isn't really maximized yet but will be only once
 712         // it's shown, so return our size as it will be then in this case
 713         if ( maximize )
 714         {
 715             // we must only change pending size here, and not call SetSize()
 716             // because otherwise Windows would think that this (full screen)
 717             // size is the natural size for the frame and so would use it when
 718             // the user clicks on "restore" title bar button instead of the
 719             // correct initial frame size
 720             //
 721             // NB: unfortunately we don't know which display we're on yet so we
 722             //     have to use the default one
 723             m_pendingSize = wxGetClientDisplayRect().GetSize();
 724         }
 725         //else: can't do anything in this case, we don't have the old size
 726     }
 727 }
 728
 729 bool wxTopLevelWindowMSW::IsMaximized() const
 730 {
 731     return IsAlwaysMaximized() ||
 732 #if !defined(__SMARTPHONE__) && !defined(__POCKETPC__) && !defined(__WINCE_STANDARDSDK__)
 733
 734            (::IsZoomed(GetHwnd()) != 0) ||
 735 #endif
 736            m_maximizeOnShow;
 737 }
 738
 739 void wxTopLevelWindowMSW::Iconize(bool iconize)
 740 {
 741     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 742 }
 743
 744 bool wxTopLevelWindowMSW::IsIconized() const
 745 {
 746 #ifdef __WXWINCE__
 747     return false;
 748 #else
 749     // don't use m_iconized, it may be briefly out of sync with the real state
 750     // as it's only modified when we receive a WM_SIZE and we could be called
 751     // from an event handler from one of the messages we receive before it,
 752     // such as WM_MOVE
 753     return ::IsIconic(GetHwnd()) != 0;
 754 #endif
 755 }
 756
 757 void wxTopLevelWindowMSW::Restore()
 758 {
 759     DoShowWindow(SW_RESTORE);
 760 }
 761
 762 void wxTopLevelWindowMSW::SetLayoutDirection(wxLayoutDirection dir)
 763 {
 764     if ( dir == wxLayout_Default )
 765         dir = wxTheApp->GetLayoutDirection();
 766
 767     if ( dir != wxLayout_Default )
 768         wxTopLevelWindowBase::SetLayoutDirection(dir);
 769 }
 770
 771 // ----------------------------------------------------------------------------
 772 // wxTopLevelWindowMSW geometry
 773 // ----------------------------------------------------------------------------
 774
 775 #ifndef __WXWINCE__
 776
 777 void wxTopLevelWindowMSW::DoGetPosition(int *x, int *y) const
 778 {
 779     if ( IsIconized() )
 780     {
 781         WINDOWPLACEMENT wp;
 782         wp.length = sizeof(WINDOWPLACEMENT);
 783         if ( ::GetWindowPlacement(GetHwnd(), &wp) )
 784         {
 785             RECT& rc = wp.rcNormalPosition;
 786
 787             // the position returned by GetWindowPlacement() is in workspace
 788             // coordinates except for windows with WS_EX_TOOLWINDOW style
 789             if ( !HasFlag(wxFRAME_TOOL_WINDOW) )
 790             {
 791                 // we must use the correct display for the translation as the
 792                 // task bar might be shown on one display but not the other one
 793                 int n = wxDisplay::GetFromWindow(this);
 794                 wxDisplay dpy(n == wxNOT_FOUND ? 0 : n);
 795                 const wxPoint ptOfs = dpy.GetClientArea().GetPosition() -
 796                                       dpy.GetGeometry().GetPosition();
 797
 798                 rc.left += ptOfs.x;
 799                 rc.top += ptOfs.y;
 800             }
 801
 802             if ( x )
 803                 *x = rc.left;
 804             if ( y )
 805                 *y = rc.top;
 806
 807             return;
 808         }
 809
 810         wxLogLastError(_T("GetWindowPlacement"));
 811     }
 812     //else: normal case
 813
 814     wxTopLevelWindowBase::DoGetPosition(x, y);
 815 }
 816
 817 void wxTopLevelWindowMSW::DoGetSize(int *width, int *height) const
 818 {
 819     if ( IsIconized() )
 820     {
 821         WINDOWPLACEMENT wp;
 822         wp.length = sizeof(WINDOWPLACEMENT);
 823         if ( ::GetWindowPlacement(GetHwnd(), &wp) )
 824         {
 825             const RECT& rc = wp.rcNormalPosition;
 826
 827             if ( width )
 828                 *width = rc.right - rc.left;
 829             if ( height )
 830                 *height = rc.bottom - rc.top;
 831
 832             return;
 833         }
 834
 835         wxLogLastError(_T("GetWindowPlacement"));
 836     }
 837     //else: normal case
 838
 839     wxTopLevelWindowBase::DoGetSize(width, height);
 840 }
 841
 842 #endif // __WXWINCE__
 843
 844 // ----------------------------------------------------------------------------
 845 // wxTopLevelWindowMSW fullscreen
 846 // ----------------------------------------------------------------------------
 847
 848 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 849 {
 850     if ( show == IsFullScreen() )
 851     {
 852         // nothing to do
 853         return true;
 854     }
 855
 856     m_fsIsShowing = show;
 857
 858     if ( show )
 859     {
 860         m_fsStyle = style;
 861
 862         // zap the frame borders
 863
 864         // save the 'normal' window style
 865         m_fsOldWindowStyle = GetWindowLong(GetHwnd(), GWL_STYLE);
 866
 867         // save the old position, width & height, maximize state
 868         m_fsOldSize = GetRect();
 869         m_fsIsMaximized = IsMaximized();
 870
 871         // decide which window style flags to turn off
 872         LONG newStyle = m_fsOldWindowStyle;
 873         LONG offFlags = 0;
 874
 875         if (style & wxFULLSCREEN_NOBORDER)
 876         {
 877             offFlags |= WS_BORDER;
 878 #ifndef __WXWINCE__
 879             offFlags |= WS_THICKFRAME;
 880 #endif
 881         }
 882         if (style & wxFULLSCREEN_NOCAPTION)
 883             offFlags |= WS_CAPTION | WS_SYSMENU;
 884
 885         newStyle &= ~offFlags;
 886
 887         // change our window style to be compatible with full-screen mode
 888         ::SetWindowLong(GetHwnd(), GWL_STYLE, newStyle);
 889
 890         wxRect rect;
 891 #if wxUSE_DISPLAY
 892         // resize to the size of the display containing us
 893         int dpy = wxDisplay::GetFromWindow(this);
 894         if ( dpy != wxNOT_FOUND )
 895         {
 896             rect = wxDisplay(dpy).GetGeometry();
 897         }
 898         else // fall back to the main desktop
 899 #endif // wxUSE_DISPLAY
 900         {
 901             // resize to the size of the desktop
 902             wxCopyRECTToRect(wxGetWindowRect(::GetDesktopWindow()), rect);
 903 #ifdef __WXWINCE__
 904             // FIXME: size of the bottom menu (toolbar)
 905             // should be taken in account
 906             rect.height += rect.y;
 907             rect.y       = 0;
 908 #endif
 909         }
 910
 911         SetSize(rect);
 912
 913         // now flush the window style cache and actually go full-screen
 914         long flags = SWP_FRAMECHANGED;
 915
 916         // showing the frame full screen should also show it if it's still
 917         // hidden
 918         if ( !IsShown() )
 919         {
 920             // don't call wxWindow version to avoid flicker from calling
 921             // ::ShowWindow() -- we're going to show the window at the correct
 922             // location directly below -- but do call the wxWindowBase version
 923             // to sync the internal m_isShown flag
 924             wxWindowBase::Show();
 925
 926             flags |= SWP_SHOWWINDOW;
 927         }
 928
 929         SetWindowPos(GetHwnd(), HWND_TOP,
 930                      rect.x, rect.y, rect.width, rect.height,
 931                      flags);
 932
 933 #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400))
 934         ::SHFullScreen(GetHwnd(), SHFS_HIDETASKBAR | SHFS_HIDESIPBUTTON);
 935 #endif
 936
 937         // finally send an event allowing the window to relayout itself &c
 938         wxSizeEvent event(rect.GetSize(), GetId());
 939         HandleWindowEvent(event);
 940     }
 941     else // stop showing full screen
 942     {
 943 #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400))
 944         ::SHFullScreen(GetHwnd(), SHFS_SHOWTASKBAR | SHFS_SHOWSIPBUTTON);
 945 #endif
 946         Maximize(m_fsIsMaximized);
 947         SetWindowLong(GetHwnd(),GWL_STYLE, m_fsOldWindowStyle);
 948         SetWindowPos(GetHwnd(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 949             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 950     }
 951
 952     return true;
 953 }
 954
 955 // ----------------------------------------------------------------------------
 956 // wxTopLevelWindowMSW misc
 957 // ----------------------------------------------------------------------------
 958
 959 void wxTopLevelWindowMSW::SetTitle( const wxString& title)
 960 {
 961     SetLabel(title);
 962 }
 963
 964 wxString wxTopLevelWindowMSW::GetTitle() const
 965 {
 966     return GetLabel();
 967 }
 968
 969 void wxTopLevelWindowMSW::DoSelectAndSetIcon(const wxIconBundle& icons,
 970                                              int smX,
 971                                              int smY,
 972                                              int i)
 973 {
 974     const wxSize size(::GetSystemMetrics(smX), ::GetSystemMetrics(smY));
 975
 976     const wxIcon icon = icons.GetIconOfExactSize(size);
 977     if ( icon.Ok() )
 978     {
 979         ::SendMessage(GetHwnd(), WM_SETICON, i, (LPARAM)GetHiconOf(icon));
 980     }
 981 }
 982
 983 void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons)
 984 {
 985     wxTopLevelWindowBase::SetIcons(icons);
 986
 987     DoSelectAndSetIcon(icons, SM_CXSMICON, SM_CYSMICON, ICON_SMALL);
 988     DoSelectAndSetIcon(icons, SM_CXICON, SM_CYICON, ICON_BIG);
 989 }
 990
 991 bool wxTopLevelWindowMSW::EnableCloseButton(bool enable)
 992 {
 993 #if !defined(__WXMICROWIN__)
 994     // get system (a.k.a. window) menu
 995     HMENU hmenu = GetSystemMenu(GetHwnd(), FALSE /* get it */);
 996     if ( !hmenu )
 997     {
 998         // no system menu at all -- ok if we want to remove the close button
 999         // anyhow, but bad if we want to show it
1000         return !enable;
1001     }
1002
1003     // enabling/disabling the close item from it also automatically
1004     // disables/enables the close title bar button
1005     if ( ::EnableMenuItem(hmenu, SC_CLOSE,
1006                           MF_BYCOMMAND |
1007                           (enable ? MF_ENABLED : MF_GRAYED)) == -1 )
1008     {
1009         wxLogLastError(_T("EnableMenuItem(SC_CLOSE)"));
1010
1011         return false;
1012     }
1013 #ifndef __WXWINCE__
1014     // update appearance immediately
1015     if ( !::DrawMenuBar(GetHwnd()) )
1016     {
1017         wxLogLastError(_T("DrawMenuBar"));
1018     }
1019 #endif
1020 #endif // !__WXMICROWIN__
1021
1022     return true;
1023 }
1024
1025 #ifndef __WXWINCE__
1026
1027 bool wxTopLevelWindowMSW::SetShape(const wxRegion& region)
1028 {
1029     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1030                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1031
1032     // The empty region signifies that the shape should be removed from the
1033     // window.
1034     if ( region.IsEmpty() )
1035     {
1036         if (::SetWindowRgn(GetHwnd(), NULL, TRUE) == 0)
1037         {
1038             wxLogLastError(_T("SetWindowRgn"));
1039             return false;
1040         }
1041         return true;
1042     }
1043
1044     // Windows takes ownership of the region, so
1045     // we'll have to make a copy of the region to give to it.
1046     DWORD noBytes = ::GetRegionData(GetHrgnOf(region), 0, NULL);
1047     RGNDATA *rgnData = (RGNDATA*) new char[noBytes];
1048     ::GetRegionData(GetHrgnOf(region), noBytes, rgnData);
1049     HRGN hrgn = ::ExtCreateRegion(NULL, noBytes, rgnData);
1050     delete[] (char*) rgnData;
1051
1052     // SetWindowRgn expects the region to be in coordinants
1053     // relative to the window, not the client area.  Figure
1054     // out the offset, if any.
1055     RECT rect;
1056     DWORD dwStyle =   ::GetWindowLong(GetHwnd(), GWL_STYLE);
1057     DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1058     ::GetClientRect(GetHwnd(), &rect);
1059     ::AdjustWindowRectEx(&rect, dwStyle, FALSE, dwExStyle);
1060     ::OffsetRgn(hrgn, -rect.left, -rect.top);
1061
1062     // Now call the shape API with the new region.
1063     if (::SetWindowRgn(GetHwnd(), hrgn, TRUE) == 0)
1064     {
1065         wxLogLastError(_T("SetWindowRgn"));
1066         return false;
1067     }
1068     return true;
1069 }
1070
1071 #endif // !__WXWINCE__
1072
1073 void wxTopLevelWindowMSW::RequestUserAttention(int flags)
1074 {
1075     // check if we can use FlashWindowEx(): unfortunately a simple test for
1076     // FLASHW_STOP doesn't work because MSVC6 headers do #define it but don't
1077     // provide FlashWindowEx() declaration, so try to detect whether we have
1078     // real headers for WINVER 0x0500 by checking for existence of a symbol not
1079     // declated in MSVC6 header
1080 #if defined(FLASHW_STOP) && defined(VK_XBUTTON1) && wxUSE_DYNLIB_CLASS
1081     // available in the headers, check if it is supported by the system
1082     typedef BOOL (WINAPI *FlashWindowEx_t)(FLASHWINFO *pfwi);
1083     FlashWindowEx_t s_pfnFlashWindowEx = NULL;
1084     if ( !s_pfnFlashWindowEx )
1085     {
1086         wxDynamicLibrary dllUser32(_T("user32.dll"));
1087         s_pfnFlashWindowEx = (FlashWindowEx_t)
1088                                 dllUser32.GetSymbol(_T("FlashWindowEx"));
1089
1090         // we can safely unload user32.dll here, it's going to remain loaded as
1091         // long as the program is running anyhow
1092     }
1093
1094     if ( s_pfnFlashWindowEx )
1095     {
1096         WinStruct<FLASHWINFO> fwi;
1097         fwi.hwnd = GetHwnd();
1098         fwi.dwFlags = FLASHW_ALL;
1099         if ( flags & wxUSER_ATTENTION_INFO )
1100         {
1101             // just flash a few times
1102             fwi.uCount = 3;
1103         }
1104         else // wxUSER_ATTENTION_ERROR
1105         {
1106             // flash until the user notices it
1107             fwi.dwFlags |= FLASHW_TIMERNOFG;
1108         }
1109
1110         s_pfnFlashWindowEx(&fwi);
1111     }
1112     else // FlashWindowEx() not available
1113 #endif // FlashWindowEx() defined
1114     {
1115         wxUnusedVar(flags);
1116 #ifndef __WXWINCE__
1117         ::FlashWindow(GetHwnd(), TRUE);
1118 #endif // __WXWINCE__
1119     }
1120 }
1121
1122 // ---------------------------------------------------------------------------
1123
1124 bool wxTopLevelWindowMSW::SetTransparent(wxByte alpha)
1125 {
1126 #if wxUSE_DYNLIB_CLASS
1127     typedef DWORD (WINAPI *PSETLAYEREDWINDOWATTR)(HWND, DWORD, BYTE, DWORD);
1128     static PSETLAYEREDWINDOWATTR pSetLayeredWindowAttributes = NULL;
1129
1130     if ( pSetLayeredWindowAttributes == NULL )
1131     {
1132         wxDynamicLibrary dllUser32(_T("user32.dll"));
1133         pSetLayeredWindowAttributes = (PSETLAYEREDWINDOWATTR)
1134             dllUser32.GetSymbol(wxT("SetLayeredWindowAttributes"));
1135     }
1136     if ( pSetLayeredWindowAttributes == NULL )
1137         return false;
1138 #endif // wxUSE_DYNLIB_CLASS
1139
1140     LONG exstyle = GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1141
1142     // if setting alpha to fully opaque then turn off the layered style
1143     if (alpha == 255)
1144     {
1145         SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle & ~WS_EX_LAYERED);
1146         Refresh();
1147         return true;
1148     }
1149
1150 #if wxUSE_DYNLIB_CLASS
1151     // Otherwise, set the layered style if needed and set the alpha value
1152     if ((exstyle & WS_EX_LAYERED) == 0 )
1153         SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle | WS_EX_LAYERED);
1154
1155     if ( pSetLayeredWindowAttributes(GetHwnd(), 0, (BYTE)alpha, LWA_ALPHA) )
1156         return true;
1157 #endif // wxUSE_DYNLIB_CLASS
1158
1159     return false;
1160 }
1161
1162 bool wxTopLevelWindowMSW::CanSetTransparent()
1163 {
1164     // The API is available on win2k and above
1165
1166     static int os_type = -1;
1167     static int ver_major = -1;
1168
1169     if (os_type == -1)
1170         os_type = ::wxGetOsVersion(&ver_major);
1171
1172     return (os_type == wxOS_WINDOWS_NT && ver_major >= 5);
1173 }
1174
1175
1176 void wxTopLevelWindowMSW::DoFreeze()
1177 {
1178     // do nothing: freezing toplevel window causes paint and mouse events
1179     // to go through it any TLWs under it, so the best we can do is to freeze
1180     // all children -- and wxWindowBase::Freeze() does that
1181 }
1182
1183 void wxTopLevelWindowMSW::DoThaw()
1184 {
1185     // intentionally empty -- see DoFreeze()
1186 }
1187
1188
1189 // ----------------------------------------------------------------------------
1190 // wxTopLevelWindow event handling
1191 // ----------------------------------------------------------------------------
1192
1193 // Default activation behaviour - set the focus for the first child
1194 // subwindow found.
1195 void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
1196 {
1197     if ( event.GetActive() )
1198     {
1199         // restore focus to the child which was last focused unless we already
1200         // have it
1201         wxLogTrace(_T("focus"), _T("wxTLW %p activated."), m_hWnd);
1202
1203         wxWindow *winFocus = FindFocus();
1204         if ( !winFocus || wxGetTopLevelParent(winFocus) != this )
1205         {
1206             wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent()
1207                                                 : NULL;
1208             if ( !parent )
1209             {
1210                 parent = this;
1211             }
1212
1213             wxSetFocusToChild(parent, &m_winLastFocused);
1214         }
1215     }
1216     else // deactivating
1217     {
1218         // remember the last focused child if it is our child
1219         m_winLastFocused = FindFocus();
1220
1221         if ( m_winLastFocused )
1222         {
1223             // let it know that it doesn't have focus any more
1224             m_winLastFocused->HandleKillFocus((WXHWND)NULL);
1225
1226             // and don't remember it if it's a child from some other frame
1227             if ( wxGetTopLevelParent(m_winLastFocused) != this )
1228             {
1229                 m_winLastFocused = NULL;
1230             }
1231         }
1232
1233         wxLogTrace(_T("focus"),
1234                    _T("wxTLW %p deactivated, last focused: %p."),
1235                    m_hWnd,
1236                    m_winLastFocused ? GetHwndOf(m_winLastFocused) : NULL);
1237
1238         event.Skip();
1239     }
1240 }
1241
1242 // the DialogProc for all wxWidgets dialogs
1243 LONG APIENTRY _EXPORT
1244 wxDlgProc(HWND hDlg,
1245           UINT message,
1246           WPARAM WXUNUSED(wParam),
1247           LPARAM WXUNUSED(lParam))
1248 {
1249     switch ( message )
1250     {
1251         case WM_INITDIALOG:
1252         {
1253             // under CE, add a "Ok" button in the dialog title bar and make it full
1254             // screen
1255             //
1256             // TODO: find the window for this HWND, and take into account
1257             // wxMAXIMIZE and wxCLOSE_BOX. For now, assume both are present.
1258             //
1259             // Standard SDK doesn't have aygshell.dll: see
1260             // include/wx/msw/wince/libraries.h
1261 #if defined(__WXWINCE__) && !defined(__WINCE_STANDARDSDK__) && !defined(__HANDHELDPC__)
1262             SHINITDLGINFO shidi;
1263             shidi.dwMask = SHIDIM_FLAGS;
1264             shidi.dwFlags = SHIDIF_SIZEDLG // take account of the SIP or menubar
1265 #ifndef __SMARTPHONE__
1266                             | SHIDIF_DONEBUTTON
1267 #endif
1268                         ;
1269             shidi.hDlg = hDlg;
1270             SHInitDialog( &shidi );
1271 #else // no SHInitDialog()
1272             wxUnusedVar(hDlg);
1273 #endif
1274             // for WM_INITDIALOG, returning TRUE tells system to set focus to
1275             // the first control in the dialog box, but as we set the focus
1276             // ourselves, we return FALSE for it as well
1277             return FALSE;
1278         }
1279     }
1280
1281     // for almost all messages, returning FALSE means that we didn't process
1282     // the message
1283     return FALSE;
1284 }
1285
1286 // ============================================================================
1287 // wxTLWHiddenParentModule implementation
1288 // ============================================================================
1289
1290 HWND wxTLWHiddenParentModule::ms_hwnd = NULL;
1291
1292 const wxChar *wxTLWHiddenParentModule::ms_className = NULL;
1293
1294 bool wxTLWHiddenParentModule::OnInit()
1295 {
1296     ms_hwnd = NULL;
1297     ms_className = NULL;
1298
1299     return true;
1300 }
1301
1302 void wxTLWHiddenParentModule::OnExit()
1303 {
1304     if ( ms_hwnd )
1305     {
1306         if ( !::DestroyWindow(ms_hwnd) )
1307         {
1308             wxLogLastError(_T("DestroyWindow(hidden TLW parent)"));
1309         }
1310
1311         ms_hwnd = NULL;
1312     }
1313
1314     if ( ms_className )
1315     {
1316         if ( !::UnregisterClass(ms_className, wxGetInstance()) )
1317         {
1318             wxLogLastError(_T("UnregisterClass(\"wxTLWHiddenParent\")"));
1319         }
1320
1321         ms_className = NULL;
1322     }
1323 }
1324
1325 /* static */
1326 HWND wxTLWHiddenParentModule::GetHWND()
1327 {
1328     if ( !ms_hwnd )
1329     {
1330         if ( !ms_className )
1331         {
1332             static const wxChar *HIDDEN_PARENT_CLASS = _T("wxTLWHiddenParent");
1333
1334             WNDCLASS wndclass;
1335             wxZeroMemory(wndclass);
1336
1337             wndclass.lpfnWndProc   = DefWindowProc;
1338             wndclass.hInstance     = wxGetInstance();
1339             wndclass.lpszClassName = HIDDEN_PARENT_CLASS;
1340
1341             if ( !::RegisterClass(&wndclass) )
1342             {
1343                 wxLogLastError(_T("RegisterClass(\"wxTLWHiddenParent\")"));
1344             }
1345             else
1346             {
1347                 ms_className = HIDDEN_PARENT_CLASS;
1348             }
1349         }
1350
1351         ms_hwnd = ::CreateWindow(ms_className, wxEmptyString, 0, 0, 0, 0, 0, NULL,
1352                                  (HMENU)NULL, wxGetInstance(), NULL);
1353         if ( !ms_hwnd )
1354         {
1355             wxLogLastError(_T("CreateWindow(hidden TLW parent)"));
1356         }
1357     }
1358
1359     return ms_hwnd;
1360 }