/////////////////////////////////////////////////////////////////////////////// // Name: msw/toplevel.cpp // Purpose: implements wxTopLevelWindow for MSW // Author: Vadim Zeitlin // Modified by: // Created: 24.09.01 // RCS-ID: $Id$ // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com) // License: wxWindows license /////////////////////////////////////////////////////////////////////////////// // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- #ifdef __GNUG__ #pragma implementation "toplevel.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/app.h" #include "wx/toplevel.h" #include "wx/string.h" #include "wx/log.h" #include "wx/intl.h" #include "wx/frame.h" #include "wx/containr.h" // wxSetFocusToChild() #endif //WX_PRECOMP #include "wx/module.h" #include "wx/msw/private.h" #include "wx/popupwin.h" #ifndef ICON_BIG #define ICON_BIG 1 #endif #ifndef ICON_SMALL #define ICON_SMALL 0 #endif // ---------------------------------------------------------------------------- // stubs for missing functions under MicroWindows // ---------------------------------------------------------------------------- #ifdef __WXMICROWIN__ // static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return FALSE; } static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return FALSE; } #endif // __WXMICROWIN__ // NB: wxDlgProc must be defined here and not in dialog.cpp because the latter // is not included by wxUniv build which does need wxDlgProc LONG APIENTRY _EXPORT wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam); // ---------------------------------------------------------------------------- // globals // ---------------------------------------------------------------------------- // list of all frames and modeless dialogs wxWindowList wxModelessWindows; // the name of the default wxWindows class extern const wxChar *wxCanvasClassName; // ---------------------------------------------------------------------------- // wxTLWHiddenParentModule: used to manage the hidden parent window (we need a // module to ensure that the window is always deleted) // ---------------------------------------------------------------------------- class wxTLWHiddenParentModule : public wxModule { public: // module init/finalize virtual bool OnInit(); virtual void OnExit(); // get the hidden window (creates on demand) static HWND GetHWND(); private: // the HWND of the hidden parent static HWND ms_hwnd; // the class used to create it static const wxChar *ms_className; DECLARE_DYNAMIC_CLASS(wxTLWHiddenParentModule) }; IMPLEMENT_DYNAMIC_CLASS(wxTLWHiddenParentModule, wxModule) // ============================================================================ // wxTopLevelWindowMSW implementation // ============================================================================ BEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase) EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate) END_EVENT_TABLE() // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW creation // ---------------------------------------------------------------------------- void wxTopLevelWindowMSW::Init() { m_iconized = m_maximizeOnShow = FALSE; // unlike (almost?) all other windows, frames are created hidden m_isShown = FALSE; // Data to save/restore when calling ShowFullScreen m_fsStyle = 0; m_fsOldWindowStyle = 0; m_fsIsMaximized = FALSE; m_fsIsShowing = FALSE; m_winLastFocused = (wxWindow *)NULL; } WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const { // let the base class deal with the common styles but fix the ones which // don't make sense for us (we also deal with the borders ourselves) WXDWORD msflags = wxWindow::MSWGetStyle ( (style & ~wxBORDER_MASK) | wxBORDER_NONE, exflags ) & ~WS_CHILD; // first select the kind of window being created // // note that if we don't set WS_POPUP, Windows assumes WS_OVERLAPPED and // creates a window with both caption and border, hence we also test it // below in some other cases if ( style & wxFRAME_TOOL_WINDOW ) msflags |= WS_POPUP; else msflags |= WS_OVERLAPPED; // border and caption styles if ( style & wxRESIZE_BORDER ) msflags |= WS_THICKFRAME; else if ( !(style & wxBORDER_NONE) ) msflags |= WS_BORDER; else msflags |= WS_POPUP; if ( style & wxCAPTION ) msflags |= WS_CAPTION; else msflags |= WS_POPUP; // next translate the individual flags if ( style & wxMINIMIZE_BOX ) msflags |= WS_MINIMIZEBOX; if ( style & wxMAXIMIZE_BOX ) msflags |= WS_MAXIMIZEBOX; if ( style & wxSYSTEM_MENU ) msflags |= WS_SYSMENU; if ( style & wxMINIMIZE ) msflags |= WS_MINIMIZE; if ( style & wxMAXIMIZE ) msflags |= WS_MAXIMIZE; // Keep this here because it saves recoding this function in wxTinyFrame #if wxUSE_ITSY_BITSY && !defined(__WIN32__) if ( style & wxTINY_CAPTION_VERT ) msflags |= IBS_VERTCAPTION; if ( style & wxTINY_CAPTION_HORIZ ) msflags |= IBS_HORZCAPTION; #else if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) ) msflags |= WS_CAPTION; #endif if ( exflags ) { #if !defined(__WIN16__) && !defined(__SC__) if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ) { if ( style & wxFRAME_TOOL_WINDOW ) { // create the palette-like window *exflags |= WS_EX_TOOLWINDOW; } // We have to solve 2 different problems here: // // 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the // taskbar even if they don't have a parent // // 2. frames without this style should appear in the taskbar even // if they're owned (Windows only puts non owned windows into // the taskbar normally) // // The second one is solved here by using WS_EX_APPWINDOW flag, the // first one is dealt with in our MSWGetParent() method // implementation if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() ) { // need to force the frame to appear in the taskbar *exflags |= WS_EX_APPWINDOW; } //else: nothing to do [here] } #endif // !Win16 if ( style & wxSTAY_ON_TOP ) *exflags |= WS_EX_TOPMOST; #ifdef __WIN32__ if ( GetExtraStyle() & wxFRAME_EX_CONTEXTHELP ) *exflags |= WS_EX_CONTEXTHELP; #endif // __WIN32__ } return msflags; } WXHWND wxTopLevelWindowMSW::MSWGetParent() const { // for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL // parent HWND or it would be always on top of its parent which is not what // we usually want (in fact, we only want it for frames with the // wxFRAME_FLOAT_ON_PARENT flag) HWND hwndParent = NULL; if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) ) { const wxWindow *parent = GetParent(); if ( !parent ) { // this flag doesn't make sense then and will be ignored wxFAIL_MSG( _T("wxFRAME_FLOAT_ON_PARENT but no parent?") ); } else { hwndParent = GetHwndOf(parent); } } //else: don't float on parent, must not be owned // now deal with the 2nd taskbar-related problem (see comments above in // MSWGetStyle()) if ( HasFlag(wxFRAME_NO_TASKBAR) && !hwndParent ) { // use hidden parent hwndParent = wxTLWHiddenParentModule::GetHWND(); } return (WXHWND)hwndParent; } bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate, const wxString& title, const wxPoint& pos, const wxSize& size) { #ifdef __WXMICROWIN__ // no dialogs support under MicroWin yet return CreateFrame(title, pos, size); #else // !__WXMICROWIN__ wxWindow *parent = GetParent(); // for the dialogs without wxDIALOG_NO_PARENT style, use the top level // app window as parent - this avoids creating modal dialogs without // parent if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) ) { parent = wxTheApp->GetTopWindow(); if ( parent ) { // don't use transient windows as parents, this is dangerous as it // can lead to a crash if the parent is destroyed before the child // // also don't use the window which is currently hidden as then the // dialog would be hidden as well if ( (parent->GetExtraStyle() & wxWS_EX_TRANSIENT) || !parent->IsShown() ) { parent = NULL; } } } m_hWnd = (WXHWND)::CreateDialogIndirect ( wxGetInstance(), (DLGTEMPLATE*)dlgTemplate, parent ? GetHwndOf(parent) : NULL, (DLGPROC)wxDlgProc ); if ( !m_hWnd ) { wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?")); wxLogSysError(wxT("Can't create dialog using memory template")); return FALSE; } WXDWORD exflags; (void)MSWGetCreateWindowFlags(&exflags); if ( exflags ) { ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags); ::SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE); } #if defined(__WIN95__) // For some reason, the system menu is activated when we use the // WS_EX_CONTEXTHELP style, so let's set a reasonable icon if ( exflags & WS_EX_CONTEXTHELP ) { wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame); if ( winTop ) { wxIcon icon = winTop->GetIcon(); if ( icon.Ok() ) { ::SendMessage(GetHwnd(), WM_SETICON, (WPARAM)TRUE, (LPARAM)GetHiconOf(icon)); } } } #endif // __WIN95__ // move the dialog to its initial position without forcing repainting int x, y, w, h; if ( !MSWGetCreateWindowCoords(pos, size, x, y, w, h) ) { x = w = (int)CW_USEDEFAULT; } // we can't use CW_USEDEFAULT here as we're not calling CreateWindow() // and passing CW_USEDEFAULT to MoveWindow() results in resizing the // window to (0, 0) size which breaks quite a lot of things, e.g. the // sizer calculation in wxSizer::Fit() if ( w == (int)CW_USEDEFAULT ) { // the exact number doesn't matter, the dialog will be resized // again soon anyhow but it should be big enough to allow // calculation relying on "totalSize - clientSize > 0" work, i.e. // at least greater than the title bar height w = h = 100; } if ( x == (int)CW_USEDEFAULT ) { // centre it on the screen - what else can we do? wxSize sizeDpy = wxGetDisplaySize(); x = (sizeDpy.x - w) / 2; y = (sizeDpy.y - h) / 2; } if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) ) { wxLogLastError(wxT("MoveWindow")); } if ( !title.empty() ) { ::SetWindowText(GetHwnd(), title); } SubclassWin(m_hWnd); return TRUE; #endif // __WXMICROWIN__/!__WXMICROWIN__ } bool wxTopLevelWindowMSW::CreateFrame(const wxString& title, const wxPoint& pos, const wxSize& size) { WXDWORD exflags; WXDWORD flags = MSWGetCreateWindowFlags(&exflags); return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags); } bool wxTopLevelWindowMSW::Create(wxWindow *parent, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name) { // init our fields Init(); m_windowStyle = style; SetName(name); m_windowId = id == -1 ? NewControlId() : id; wxTopLevelWindows.Append(this); if ( parent ) parent->AddChild(this); if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG ) { // we have different dialog templates to allows creation of dialogs // with & without captions under MSWindows, resizeable or not (but a // resizeable dialog always has caption - otherwise it would look too // strange) // we need 3 additional WORDs for dialog menu, class and title (as we // don't use DS_SETFONT we don't need the fourth WORD for the font) static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3); DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize); memset(dlgTemplate, 0, dlgsize); // these values are arbitrary, they won't be used normally anyhow dlgTemplate->x = 34; dlgTemplate->y = 22; dlgTemplate->cx = 144; dlgTemplate->cy = 75; // reuse the code in MSWGetStyle() but correct the results slightly for // the dialog dlgTemplate->style = MSWGetStyle(style, NULL); // all dialogs are popups dlgTemplate->style |= WS_POPUP; // force 3D-look if necessary, it looks impossibly ugly otherwise if ( style & (wxRESIZE_BORDER | wxCAPTION) ) dlgTemplate->style |= DS_MODALFRAME; bool ret = CreateDialog(dlgTemplate, title, pos, size); free(dlgTemplate); return ret; } else // !dialog { return CreateFrame(title, pos, size); } } wxTopLevelWindowMSW::~wxTopLevelWindowMSW() { if ( wxModelessWindows.Find(this) ) wxModelessWindows.DeleteObject(this); // after destroying an owned window, Windows activates the next top level // window in Z order but it may be different from our owner (to reproduce // this simply Alt-TAB to another application and back before closing the // owned frame) whereas we always want to yield activation to our parent if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) ) { wxWindow *parent = GetParent(); if ( parent ) { ::BringWindowToTop(GetHwndOf(parent)); } } } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW showing // ---------------------------------------------------------------------------- void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd) { ::ShowWindow(GetHwnd(), nShowCmd); m_iconized = nShowCmd == SW_MINIMIZE; } bool wxTopLevelWindowMSW::Show(bool show) { // don't use wxWindow version as we want to call DoShowWindow() ourselves if ( !wxWindowBase::Show(show) ) return FALSE; int nShowCmd; if ( show ) { if ( m_maximizeOnShow ) { // show and maximize nShowCmd = SW_MAXIMIZE; m_maximizeOnShow = FALSE; } else // just show { nShowCmd = SW_SHOW; } } else // hide { nShowCmd = SW_HIDE; } DoShowWindow(nShowCmd); if ( show ) { ::BringWindowToTop(GetHwnd()); wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId); event.SetEventObject( this ); GetEventHandler()->ProcessEvent(event); } else // hide { // Try to highlight the correct window (the parent) if ( GetParent() ) { HWND hWndParent = GetHwndOf(GetParent()); if (hWndParent) ::BringWindowToTop(hWndParent); } } return TRUE; } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW maximize/minimize // ---------------------------------------------------------------------------- void wxTopLevelWindowMSW::Maximize(bool maximize) { if ( IsShown() ) { // just maximize it directly DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE); } else // hidden { // we can't maximize the hidden frame because it shows it as well, so // just remember that we should do it later in this case m_maximizeOnShow = maximize; } } bool wxTopLevelWindowMSW::IsMaximized() const { return ::IsZoomed(GetHwnd()) != 0; } void wxTopLevelWindowMSW::Iconize(bool iconize) { DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE); } bool wxTopLevelWindowMSW::IsIconized() const { // also update the current state ((wxTopLevelWindowMSW *)this)->m_iconized = ::IsIconic(GetHwnd()) != 0; return m_iconized; } void wxTopLevelWindowMSW::Restore() { DoShowWindow(SW_RESTORE); } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW fullscreen // ---------------------------------------------------------------------------- bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style) { if (show) { if (IsFullScreen()) return FALSE; m_fsIsShowing = TRUE; m_fsStyle = style; // zap the frame borders // save the 'normal' window style m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE); // save the old position, width & height, maximize state m_fsOldSize = GetRect(); m_fsIsMaximized = IsMaximized(); // decide which window style flags to turn off LONG newStyle = m_fsOldWindowStyle; LONG offFlags = 0; if (style & wxFULLSCREEN_NOBORDER) offFlags |= WS_BORDER | WS_THICKFRAME; if (style & wxFULLSCREEN_NOCAPTION) offFlags |= (WS_CAPTION | WS_SYSMENU); newStyle &= (~offFlags); // change our window style to be compatible with full-screen mode ::SetWindowLong((HWND)GetHWND(), GWL_STYLE, newStyle); // resize to the size of the desktop int width, height; RECT rect = wxGetWindowRect(::GetDesktopWindow()); width = rect.right - rect.left; height = rect.bottom - rect.top; SetSize(width, height); // now flush the window style cache and actually go full-screen SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED); wxSizeEvent event(wxSize(width, height), GetId()); GetEventHandler()->ProcessEvent(event); return TRUE; } else { if (!IsFullScreen()) return FALSE; m_fsIsShowing = FALSE; Maximize(m_fsIsMaximized); SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle); SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y, m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED); return TRUE; } } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW misc // ---------------------------------------------------------------------------- void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon) { SetIcons( wxIconBundle( icon ) ); } void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons) { wxTopLevelWindowBase::SetIcons(icons); #if defined(__WIN95__) && !defined(__WXMICROWIN__) const wxIcon& sml = icons.GetIcon( wxSize( 16, 16 ) ); if( sml.Ok() && sml.GetWidth() == 16 && sml.GetHeight() == 16 ) { ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_SMALL, (LPARAM)GetHiconOf(sml) ); } const wxIcon& big = icons.GetIcon( wxSize( 32, 32 ) ); if( big.Ok() && big.GetWidth() == 32 && big.GetHeight() == 32 ) { ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_BIG, (LPARAM)GetHiconOf(big) ); } #endif // __WIN95__ } bool wxTopLevelWindowMSW::EnableCloseButton(bool enable) { #ifndef __WXMICROWIN__ // get system (a.k.a. window) menu HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE /* get it */); if ( !hmenu ) { wxLogLastError(_T("GetSystemMenu")); return FALSE; } // enabling/disabling the close item from it also automatically // disables/enables the close title bar button if ( ::EnableMenuItem(hmenu, SC_CLOSE, MF_BYCOMMAND | (enable ? MF_ENABLED : MF_GRAYED)) == -1 ) { wxLogLastError(_T("EnableMenuItem(SC_CLOSE)")); return FALSE; } // update appearance immediately if ( !::DrawMenuBar(GetHwnd()) ) { wxLogLastError(_T("DrawMenuBar")); } #endif // !__WXMICROWIN__ return TRUE; } bool wxTopLevelWindowMSW::SetShape(const wxRegion& region) { // The empty region signifies that the shape should be removed from the // window. if ( region.IsEmpty() ) { if (::SetWindowRgn(GetHwnd(), NULL, TRUE) == 0) { wxLogLastError(_T("SetWindowRgn")); return FALSE; } return TRUE; } // Windows takes ownership of the region, so // we'll have to make a copy of the region to give to it. DWORD noBytes = ::GetRegionData(GetHrgnOf(region), 0, NULL); RGNDATA *rgnData = (RGNDATA*) new char[noBytes]; ::GetRegionData(GetHrgnOf(region), noBytes, rgnData); HRGN hrgn = ::ExtCreateRegion(NULL, noBytes, rgnData); delete[] (char*) rgnData; // SetWindowRgn expects the region to be in coordinants // relative to the window, not the client area. Figure // out the offset, if any. RECT rect; DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE); DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE); ::GetClientRect(GetHwnd(), &rect); ::AdjustWindowRectEx(&rect, dwStyle, FALSE, dwExStyle); ::OffsetRgn(hrgn, -rect.left, -rect.top); // Now call the shape API with the new region. if (::SetWindowRgn(GetHwnd(), hrgn, TRUE) == 0) { wxLogLastError(_T("SetWindowRgn")); return FALSE; } return TRUE; } // ---------------------------------------------------------------------------- // wxTopLevelWindow event handling // ---------------------------------------------------------------------------- // Default activation behaviour - set the focus for the first child // subwindow found. void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event) { if ( event.GetActive() ) { // restore focus to the child which was last focused wxLogTrace(_T("focus"), _T("wxTLW %08x activated."), (int) m_hWnd); wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent() : NULL; if ( !parent ) { parent = this; } wxSetFocusToChild(parent, &m_winLastFocused); } else // deactivating { // remember the last focused child if it is our child m_winLastFocused = FindFocus(); // so we NULL it out if it's a child from some other frame wxWindow *win = m_winLastFocused; while ( win ) { if ( win->IsTopLevel() ) { if ( win != this ) { m_winLastFocused = NULL; } break; } win = win->GetParent(); } wxLogTrace(_T("focus"), _T("wxTLW %08x deactivated, last focused: %08x."), (int) m_hWnd, (int) (m_winLastFocused ? GetHwndOf(m_winLastFocused) : NULL)); event.Skip(); } } // the DialogProc for all wxWindows dialogs LONG APIENTRY _EXPORT wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { switch ( message ) { case WM_INITDIALOG: // for this message, returning TRUE tells system to set focus to // the first control in the dialog box, but as we set the focus // ourselves, we return FALSE from here as well, so fall through default: // for all the other ones, FALSE means that we didn't process the // message return FALSE; } } // ============================================================================ // wxTLWHiddenParentModule implementation // ============================================================================ HWND wxTLWHiddenParentModule::ms_hwnd = NULL; const wxChar *wxTLWHiddenParentModule::ms_className = NULL; bool wxTLWHiddenParentModule::OnInit() { ms_hwnd = NULL; ms_className = NULL; return TRUE; } void wxTLWHiddenParentModule::OnExit() { if ( ms_hwnd ) { if ( !::DestroyWindow(ms_hwnd) ) { wxLogLastError(_T("DestroyWindow(hidden TLW parent)")); } ms_hwnd = NULL; } if ( ms_className ) { if ( !::UnregisterClass(ms_className, wxGetInstance()) ) { wxLogLastError(_T("UnregisterClass(\"wxTLWHiddenParent\")")); } ms_className = NULL; } } /* static */ HWND wxTLWHiddenParentModule::GetHWND() { if ( !ms_hwnd ) { if ( !ms_className ) { static const wxChar *HIDDEN_PARENT_CLASS = _T("wxTLWHiddenParent"); WNDCLASS wndclass; wxZeroMemory(wndclass); wndclass.lpfnWndProc = DefWindowProc; wndclass.hInstance = wxGetInstance(); wndclass.lpszClassName = HIDDEN_PARENT_CLASS; if ( !::RegisterClass(&wndclass) ) { wxLogLastError(_T("RegisterClass(\"wxTLWHiddenParent\")")); } else { ms_className = HIDDEN_PARENT_CLASS; } } ms_hwnd = ::CreateWindow(ms_className, _T(""), 0, 0, 0, 0, 0, NULL, (HMENU)NULL, wxGetInstance(), NULL); if ( !ms_hwnd ) { wxLogLastError(_T("CreateWindow(hidden TLW parent)")); } } return ms_hwnd; }