/////////////////////////////////////////////////////////////////////////////// // Name: src/msw/toplevel.cpp // Purpose: implements wxTopLevelWindow for MSW // Author: Vadim Zeitlin // Modified by: // Created: 24.09.01 // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com) // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #include "wx/toplevel.h" #ifndef WX_PRECOMP #include "wx/app.h" #include "wx/dialog.h" #include "wx/string.h" #include "wx/log.h" #include "wx/intl.h" #include "wx/frame.h" #include "wx/menu.h" #include "wx/containr.h" // wxSetFocusToChild() #include "wx/module.h" #endif //WX_PRECOMP #include "wx/dynlib.h" #include "wx/msw/private.h" #if defined(__WXWINCE__) && !defined(__HANDHELDPC__) #include #include // Standard SDK doesn't have aygshell.dll: see include/wx/msw/wince/libraries.h #if _WIN32_WCE < 400 || !defined(__WINCE_STANDARDSDK__) #include #endif #endif #include "wx/msw/winundef.h" #include "wx/msw/missing.h" #include "wx/display.h" #ifndef ICON_BIG #define ICON_BIG 1 #endif #ifndef ICON_SMALL #define ICON_SMALL 0 #endif // FIXME-VC6: Only VC6 doesn't have this in its standard headers so this // could be removed once support for it is dropped. #ifndef WM_UNINITMENUPOPUP #define WM_UNINITMENUPOPUP 0x0125 #endif // ---------------------------------------------------------------------------- // globals // ---------------------------------------------------------------------------- #if wxUSE_MENUS || wxUSE_MENUS_NATIVE extern wxMenu *wxCurrentPopupMenu; #endif // wxUSE_MENUS || wxUSE_MENUS_NATIVE // ---------------------------------------------------------------------------- // 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); // ---------------------------------------------------------------------------- // 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; // Data to save/restore when calling ShowFullScreen m_fsStyle = 0; m_fsOldWindowStyle = 0; m_fsIsMaximized = false; m_fsIsShowing = false; m_winLastFocused = NULL; #if defined(__SMARTPHONE__) && defined(__WXWINCE__) m_MenuBarHWND = 0; #endif #if defined(__SMARTPHONE__) || defined(__POCKETPC__) SHACTIVATEINFO* info = new SHACTIVATEINFO; wxZeroMemory(*info); info->cbSize = sizeof(SHACTIVATEINFO); m_activateInfo = (void*) info; #endif m_menuSystem = NULL; m_menuDepth = 0; } 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 & ~WS_VISIBLE; // For some reason, WS_VISIBLE needs to be defined on creation for // SmartPhone 2003. The title can fail to be displayed otherwise. #if defined(__SMARTPHONE__) || (defined(__WXWINCE__) && _WIN32_WCE < 400) msflags |= WS_VISIBLE; ((wxTopLevelWindowMSW*)this)->wxWindowBase::Show(true); #endif // 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 need to use // WS_POPUP in a few cases just to avoid having caption/border which we // don't want // border and caption styles if ( ( style & wxRESIZE_BORDER ) && !IsAlwaysMaximized()) msflags |= WS_THICKFRAME; else if ( exflags && ((style & wxBORDER_DOUBLE) || (style & wxBORDER_RAISED)) ) *exflags |= WS_EX_DLGMODALFRAME; else if ( !(style & wxBORDER_NONE) ) msflags |= WS_BORDER; #ifndef __POCKETPC__ else msflags |= WS_POPUP; #endif // normally we consider that all windows without a caption must be popups, // but CE is an exception: there windows normally do not have the caption // but shouldn't be made popups as popups can't have menus and don't look // like normal windows anyhow // TODO: Smartphone appears to like wxCAPTION, but we should check that // we need it. #if defined(__SMARTPHONE__) || !defined(__WXWINCE__) if ( style & wxCAPTION ) msflags |= WS_CAPTION; #ifndef __WXWINCE__ else msflags |= WS_POPUP; #endif // !__WXWINCE__ #endif // next translate the individual flags // WS_EX_CONTEXTHELP is incompatible with WS_MINIMIZEBOX and WS_MAXIMIZEBOX // and is ignored if we specify both of them, but chances are that if we // use wxWS_EX_CONTEXTHELP, we really do want to have the context help // button while wxMINIMIZE/wxMAXIMIZE are included by default, so the help // takes precedence if ( !(GetExtraStyle() & wxWS_EX_CONTEXTHELP) ) { if ( style & wxMINIMIZE_BOX ) msflags |= WS_MINIMIZEBOX; if ( style & wxMAXIMIZE_BOX ) msflags |= WS_MAXIMIZEBOX; } #ifndef __WXWINCE__ // notice that if wxCLOSE_BOX is specified we need to use WS_SYSMENU too as // otherwise the close box doesn't appear if ( style & (wxSYSTEM_MENU | wxCLOSE_BOX) ) msflags |= WS_SYSMENU; #endif // !__WXWINCE__ // NB: under CE these 2 styles are not supported currently, we should // call Minimize()/Maximize() "manually" if we want to support them if ( style & wxMINIMIZE ) msflags |= WS_MINIMIZE; if ( style & wxMAXIMIZE ) msflags |= WS_MAXIMIZE; // Keep this here because it saves recoding this function in wxTinyFrame if ( style & wxTINY_CAPTION ) msflags |= WS_CAPTION; if ( exflags ) { // there is no taskbar under CE, so omit all this #if !defined(__WXWINCE__) if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ) { if ( style & wxFRAME_TOOL_WINDOW ) { // create the palette-like window *exflags |= WS_EX_TOOLWINDOW; // tool windows shouldn't appear on the taskbar (as documented) style |= wxFRAME_NO_TASKBAR; } // 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] } if ( GetExtraStyle() & wxWS_EX_CONTEXTHELP ) *exflags |= WS_EX_CONTEXTHELP; #endif // !__WXWINCE__ if ( style & wxSTAY_ON_TOP ) *exflags |= WS_EX_TOPMOST; } 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( wxT("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; } #if defined(__SMARTPHONE__) || defined(__POCKETPC__) bool wxTopLevelWindowMSW::HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam) { SHACTIVATEINFO *info = (SHACTIVATEINFO*) m_activateInfo; if ( info ) { SHHandleWMSettingChange(GetHwnd(), wParam, lParam, info); } return wxWindowMSW::HandleSettingChange(wParam, lParam); } #endif WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam) { WXLRESULT rc = 0; bool processed = false; switch ( message ) { #if defined(__SMARTPHONE__) || defined(__POCKETPC__) case WM_ACTIVATE: { SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo; if (info) { DWORD flags = 0; if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) flags = SHA_INPUTDIALOG; SHHandleWMActivate(GetHwnd(), wParam, lParam, info, flags); } // This implicitly sends a wxEVT_ACTIVATE_APP event if (wxTheApp) wxTheApp->SetActive(wParam != 0, FindFocus()); break; } case WM_HIBERNATE: { if (wxTheApp) { wxActivateEvent event(wxEVT_HIBERNATE, true, wxID_ANY); event.SetEventObject(wxTheApp); processed = wxTheApp->ProcessEvent(event); } break; } #endif // __SMARTPHONE__ || __POCKETPC__ case WM_SYSCOMMAND: { // From MSDN: // // ... the four low-order bits of the wParam parameter are // used internally by the system. To obtain the correct // result when testing the value of wParam, an application // must combine the value 0xFFF0 with the wParam value by // using the bitwise AND operator. unsigned id = wParam & 0xfff0; // Preserve the focus when minimizing/restoring the window: we // need to do it manually as DefWindowProc() doesn't appear to // do this for us for some reason (perhaps because we don't use // WM_NEXTDLGCTL for setting focus?). Moreover, our code in // OnActivate() doesn't work in this case as we receive the // deactivation event too late when the window is being // minimized and the focus is already NULL by then. Similarly, // we receive the activation event too early and restoring // focus in it fails because the window is still minimized. So // we need to do it here. if ( id == SC_MINIMIZE ) { // For minimization, it's simple enough: just save the // focus as usual. The important thing is that we're not // minimized yet, so this works correctly. DoSaveLastFocus(); } else if ( id == SC_RESTORE ) { // For restoring, it's trickier as DefWindowProc() sets // focus to the window itself. So run it first and restore // our saved focus only afterwards. processed = true; rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam); DoRestoreLastFocus(); } #ifndef __WXUNIVERSAL__ // We need to generate events for the custom items added to the // system menu if it had been created (and presumably modified). // As SC_SIZE is the first of the system-defined commands, we // only do this for the custom commands before it and leave // SC_SIZE and everything after it to DefWindowProc(). if ( m_menuSystem && id < SC_SIZE ) { if ( m_menuSystem->MSWCommand(0 /* unused anyhow */, id) ) processed = true; } #endif // #ifndef __WXUNIVERSAL__ } break; #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) #if wxUSE_MENUS case WM_INITMENUPOPUP: processed = HandleMenuPopup(wxEVT_MENU_OPEN, (WXHMENU)wParam); break; case WM_MENUSELECT: { WXWORD item, flags; WXHMENU hmenu; UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu); processed = HandleMenuSelect(item, flags, hmenu); } break; case WM_EXITMENULOOP: // Under Windows 98 and 2000 and later we're going to get // WM_UNINITMENUPOPUP which will be used to generate this event // with more information (notably the menu that was closed) so we // only need this one under old Windows systems where the newer // event is never sent. if ( wxGetWinVersion() < wxWinVersion_98 ) processed = HandleExitMenuLoop(wParam); break; case WM_UNINITMENUPOPUP: processed = HandleMenuPopup(wxEVT_MENU_CLOSE, (WXHMENU)wParam); break; #endif // wxUSE_MENUS #endif // !__WXMICROWIN__ } if ( !processed ) rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam); return rc; } 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__ // static cast is valid as we're only ever called for dialogs wxWindow * const parent = static_cast(this)->GetParentForModalDialog(); 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; } #if !defined(__WXWINCE__) // For some reason, the system menu is activated when we use the // WS_EX_CONTEXTHELP style, so let's set a reasonable icon if ( HasExtraStyle(wxWS_EX_CONTEXTHELP) ) { wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame); if ( winTop ) { wxIcon icon = winTop->GetIcon(); if ( icon.IsOk() ) { ::SendMessage(GetHwnd(), WM_SETICON, (WPARAM)TRUE, (LPARAM)GetHiconOf(icon)); } } } #endif // !__WXWINCE__ if ( !title.empty() ) { ::SetWindowText(GetHwnd(), title.t_str()); } SubclassWin(m_hWnd); #if !defined(__WXWINCE__) || defined(__WINCE_STANDARDSDK__) // move the dialog to its initial position without forcing repainting int x, y, w, h; (void)MSWGetCreateWindowCoords(pos, size, x, y, w, h); if ( x == (int)CW_USEDEFAULT ) { // Let the system position the window, just set its size. ::SetWindowPos(GetHwnd(), 0, 0, 0, w, h, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE); } else // Move the window to the desired location and set its size too. { if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) ) { wxLogLastError(wxT("MoveWindow")); } } #endif // !__WXWINCE__ #ifdef __SMARTPHONE__ // Work around title non-display glitch Show(false); #endif return true; #endif // __WXMICROWIN__/!__WXMICROWIN__ } bool wxTopLevelWindowMSW::CreateFrame(const wxString& title, const wxPoint& pos, const wxSize& size) { WXDWORD exflags; WXDWORD flags = MSWGetCreateWindowFlags(&exflags); const wxSize sz = IsAlwaysMaximized() ? wxDefaultSize : size; #ifndef __WXWINCE__ if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft ) exflags |= WS_EX_LAYOUTRTL; #endif return MSWCreate(MSWGetRegisteredClassName(), title.t_str(), pos, sz, flags, exflags); } bool wxTopLevelWindowMSW::Create(wxWindow *parent, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name) { wxSize sizeReal = size; if ( !sizeReal.IsFullySpecified() ) { sizeReal.SetDefaults(GetDefaultSize()); } // notice that we should append this window to wxTopLevelWindows list // before calling CreateBase() as it behaves differently for TLW and // non-TLW windows wxTopLevelWindows.Append(this); bool ret = CreateBase(parent, id, pos, sizeReal, style, name); if ( !ret ) return false; 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, resizable or not (but a // resizable 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 const LONG baseUnits = ::GetDialogBaseUnits(); dlgTemplate->x = 34; dlgTemplate->y = 22; dlgTemplate->cx = ::MulDiv(sizeReal.x, 4, LOWORD(baseUnits)); dlgTemplate->cy = ::MulDiv(sizeReal.y, 8, HIWORD(baseUnits)); // reuse the code in MSWGetStyle() but correct the results slightly for // the dialog // // NB: we need a temporary variable as we can't pass pointer to // dwExtendedStyle directly, it's not aligned correctly for 64 bit // architectures WXDWORD dwExtendedStyle; dlgTemplate->style = MSWGetStyle(style, &dwExtendedStyle); dlgTemplate->dwExtendedStyle = dwExtendedStyle; // all dialogs are popups dlgTemplate->style |= WS_POPUP; #ifndef __WXWINCE__ if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft ) { dlgTemplate->dwExtendedStyle |= WS_EX_LAYOUTRTL; } // force 3D-look if necessary, it looks impossibly ugly otherwise if ( style & (wxRESIZE_BORDER | wxCAPTION) ) dlgTemplate->style |= DS_MODALFRAME; #endif ret = CreateDialog(dlgTemplate, title, pos, sizeReal); free(dlgTemplate); } else // !dialog { ret = CreateFrame(title, pos, sizeReal); } #ifndef __WXWINCE__ if ( ret && !(GetWindowStyleFlag() & wxCLOSE_BOX) ) { EnableCloseButton(false); } #endif // for standard dialogs the dialog manager generates WM_CHANGEUISTATE // itself but for custom windows we have to do it ourselves in order to // make the keyboard indicators (such as underlines for accelerators and // focus rectangles) work under Win2k+ if ( ret ) { MSWUpdateUIState(UIS_INITIALIZE); } // Note: if we include PocketPC in this test, dialogs can fail to show up, // for example the text entry dialog in the dialogs sample. Problem with Maximise()? #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__WINCE_STANDARDSDK__)) if ( ( style & wxMAXIMIZE ) || IsAlwaysMaximized() ) { this->Maximize(); } #endif #if defined(__SMARTPHONE__) && defined(__WXWINCE__) SetRightMenu(); // to nothing for initialization #endif return ret; } wxTopLevelWindowMSW::~wxTopLevelWindowMSW() { delete m_menuSystem; SendDestroyEvent(); #if defined(__SMARTPHONE__) || defined(__POCKETPC__) SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo; delete info; m_activateInfo = NULL; #endif // 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); // Hiding the window doesn't change its iconized state. if ( nShowCmd != SW_HIDE ) { // Otherwise restoring, maximizing or showing the window normally also // makes it not iconized and only minimizing it does make it iconized. m_iconized = nShowCmd == SW_MINIMIZE; } } void wxTopLevelWindowMSW::ShowWithoutActivating() { if ( !wxWindowBase::Show(true) ) return; DoShowWindow(SW_SHOWNA); } 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; // This is necessary, or no window appears #if defined( __WINCE_STANDARDSDK__) || defined(__SMARTPHONE__) DoShowWindow(SW_SHOW); #endif m_maximizeOnShow = false; } else if ( m_iconized ) { // We were iconized while we were hidden, so now we need to show // the window in iconized state. nShowCmd = SW_MINIMIZE; } else if ( ::IsIconic(GetHwnd()) ) { // We were restored while we were hidden, so now we need to show // the window in its normal state. // // As below, don't activate some kinds of windows. if ( HasFlag(wxFRAME_TOOL_WINDOW) || !IsEnabled() ) nShowCmd = SW_SHOWNOACTIVATE; else nShowCmd = SW_RESTORE; } else // just show { // we shouldn't use SW_SHOW which also activates the window for // tool frames (as they shouldn't steal focus from the main window) // nor for the currently disabled windows as they would be enabled // as a side effect if ( HasFlag(wxFRAME_TOOL_WINDOW) || !IsEnabled() ) nShowCmd = SW_SHOWNA; else nShowCmd = SW_SHOW; } } else // hide { nShowCmd = SW_HIDE; } #if wxUSE_DEFERRED_SIZING // we only set pending size if we're maximized before being shown, now that // we're shown we don't need it any more (it is reset in size event handler // for child windows but we have to do it ourselves for this parent window) // // make sure to reset it before actually showing the window as this will // generate WM_SIZE events and we want to use the correct client size from // them, not the size returned by WM_NCCALCSIZE in DoGetClientSize() which // turns out to be wrong for maximized windows (see #11762) m_pendingSize = wxDefaultSize; #endif // wxUSE_DEFERRED_SIZING DoShowWindow(nShowCmd); #if defined(__WXWINCE__) && (_WIN32_WCE >= 400 && !defined(__POCKETPC__) && !defined(__SMARTPHONE__)) // Addornments have to be added when the frame is the correct size wxFrame* frame = wxDynamicCast(this, wxFrame); if (frame && frame->GetMenuBar()) frame->GetMenuBar()->AddAdornments(GetWindowStyleFlag()); #endif return true; } void wxTopLevelWindowMSW::Raise() { ::SetForegroundWindow(GetHwnd()); } // ---------------------------------------------------------------------------- // 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; #if wxUSE_DEFERRED_SIZING // after calling Maximize() the client code expects to get the frame // "real" size and doesn't want to know that, because of implementation // details, the frame isn't really maximized yet but will be only once // it's shown, so return our size as it will be then in this case if ( maximize ) { // we must only change pending size here, and not call SetSize() // because otherwise Windows would think that this (full screen) // size is the natural size for the frame and so would use it when // the user clicks on "restore" title bar button instead of the // correct initial frame size // // NB: unfortunately we don't know which display we're on yet so we // have to use the default one m_pendingSize = wxGetClientDisplayRect().GetSize(); } //else: can't do anything in this case, we don't have the old size #endif // wxUSE_DEFERRED_SIZING } } bool wxTopLevelWindowMSW::IsMaximized() const { return IsAlwaysMaximized() || #if !defined(__SMARTPHONE__) && !defined(__POCKETPC__) && !defined(__WINCE_STANDARDSDK__) (::IsZoomed(GetHwnd()) != 0) || #endif m_maximizeOnShow; } void wxTopLevelWindowMSW::Iconize(bool iconize) { if ( iconize == m_iconized ) { // Do nothing, in particular don't restore non-iconized windows when // Iconize(false) is called as this would wrongly un-maximize them. return; } if ( IsShown() ) { // change the window state immediately DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE); } else // hidden { // iconizing the window shouldn't show it so just update the internal // state (otherwise it's done by DoShowWindow() itself) m_iconized = iconize; } } bool wxTopLevelWindowMSW::IsIconized() const { #ifdef __WXWINCE__ return false; #else if ( !IsShown() ) return m_iconized; // don't use m_iconized, it may be briefly out of sync with the real state // as it's only modified when we receive a WM_SIZE and we could be called // from an event handler from one of the messages we receive before it, // such as WM_MOVE return ::IsIconic(GetHwnd()) != 0; #endif } void wxTopLevelWindowMSW::Restore() { DoShowWindow(SW_RESTORE); } void wxTopLevelWindowMSW::SetLayoutDirection(wxLayoutDirection dir) { if ( dir == wxLayout_Default ) dir = wxTheApp->GetLayoutDirection(); if ( dir != wxLayout_Default ) wxTopLevelWindowBase::SetLayoutDirection(dir); } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW geometry // ---------------------------------------------------------------------------- #ifndef __WXWINCE__ void wxTopLevelWindowMSW::DoGetPosition(int *x, int *y) const { if ( IsIconized() ) { WINDOWPLACEMENT wp; wp.length = sizeof(WINDOWPLACEMENT); if ( ::GetWindowPlacement(GetHwnd(), &wp) ) { RECT& rc = wp.rcNormalPosition; // the position returned by GetWindowPlacement() is in workspace // coordinates except for windows with WS_EX_TOOLWINDOW style if ( !HasFlag(wxFRAME_TOOL_WINDOW) ) { // we must use the correct display for the translation as the // task bar might be shown on one display but not the other one int n = wxDisplay::GetFromWindow(this); wxDisplay dpy(n == wxNOT_FOUND ? 0 : n); const wxPoint ptOfs = dpy.GetClientArea().GetPosition() - dpy.GetGeometry().GetPosition(); rc.left += ptOfs.x; rc.top += ptOfs.y; } if ( x ) *x = rc.left; if ( y ) *y = rc.top; return; } wxLogLastError(wxT("GetWindowPlacement")); } //else: normal case wxTopLevelWindowBase::DoGetPosition(x, y); } void wxTopLevelWindowMSW::DoGetSize(int *width, int *height) const { if ( IsIconized() ) { WINDOWPLACEMENT wp; wp.length = sizeof(WINDOWPLACEMENT); if ( ::GetWindowPlacement(GetHwnd(), &wp) ) { const RECT& rc = wp.rcNormalPosition; if ( width ) *width = rc.right - rc.left; if ( height ) *height = rc.bottom - rc.top; return; } wxLogLastError(wxT("GetWindowPlacement")); } //else: normal case wxTopLevelWindowBase::DoGetSize(width, height); } #endif // __WXWINCE__ void wxTopLevelWindowMSW::MSWGetCreateWindowCoords(const wxPoint& pos, const wxSize& size, int& x, int& y, int& w, int& h) const { // let the system position the window if no explicit position was specified if ( pos.x == wxDefaultCoord ) { // if x is set to CW_USEDEFAULT, y parameter is ignored anyhow so we // can just as well set it to CW_USEDEFAULT as well x = y = CW_USEDEFAULT; } else { // OTOH, if x is not set to CW_USEDEFAULT, y shouldn't be set to it // neither because it is not handled as a special value by Windows then // and so we have to choose some default value for it, even if a // completely arbitrary one static const int DEFAULT_Y = 200; x = pos.x; y = pos.y == wxDefaultCoord ? DEFAULT_Y : pos.y; } if ( size.x == wxDefaultCoord || size.y == wxDefaultCoord ) { // We don't use CW_USEDEFAULT here for several reasons: // // 1. It results in huge frames on modern screens (1000*800 is not // uncommon on my 1280*1024 screen) which is way too big for a half // empty frame of most of wxWidgets samples for example) // // 2. It is buggy for frames with wxFRAME_TOOL_WINDOW style for which // the default is for whatever reason 8*8 which breaks client <-> // window size calculations (it would be nice if it didn't, but it // does and the simplest way to fix it seemed to change the broken // default size anyhow) // // 3. There is just no advantage in doing it: with x and y it is // possible that [future versions of] Windows position the new top // level window in some smart way which we can't do, but we can // guess a reasonably good size for a new window just as well // ourselves // // The only exception is for the Windows CE platform where the system // does know better than we how should the windows be sized #ifdef _WIN32_WCE w = h = CW_USEDEFAULT; #else // !_WIN32_WCE wxSize sizeReal = size; sizeReal.SetDefaults(GetDefaultSize()); w = sizeReal.x; h = sizeReal.y; #endif // _WIN32_WCE/!_WIN32_WCE } else { w = size.x; h = size.y; } } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW fullscreen // ---------------------------------------------------------------------------- bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style) { if ( show == IsFullScreen() ) { // nothing to do return true; } m_fsIsShowing = show; if ( show ) { m_fsStyle = style; // zap the frame borders // save the 'normal' window style m_fsOldWindowStyle = GetWindowLong(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; #ifndef __WXWINCE__ offFlags |= WS_THICKFRAME; #endif } if (style & wxFULLSCREEN_NOCAPTION) offFlags |= WS_CAPTION | WS_SYSMENU; newStyle &= ~offFlags; // Full screen windows should logically be popups as they don't have // decorations (and are definitely not children) and while not using // this style doesn't seem to make any difference for most windows, it // breaks wxGLCanvas in some cases, see #15434, so just always use it. newStyle |= WS_POPUP; // change our window style to be compatible with full-screen mode ::SetWindowLong(GetHwnd(), GWL_STYLE, newStyle); wxRect rect; #if wxUSE_DISPLAY // resize to the size of the display containing us int dpy = wxDisplay::GetFromWindow(this); if ( dpy != wxNOT_FOUND ) { rect = wxDisplay(dpy).GetGeometry(); } else // fall back to the main desktop #endif // wxUSE_DISPLAY { // resize to the size of the desktop wxCopyRECTToRect(wxGetWindowRect(::GetDesktopWindow()), rect); #ifdef __WXWINCE__ // FIXME: size of the bottom menu (toolbar) // should be taken in account rect.height += rect.y; rect.y = 0; #endif } SetSize(rect); // now flush the window style cache and actually go full-screen long flags = SWP_FRAMECHANGED; // showing the frame full screen should also show it if it's still // hidden if ( !IsShown() ) { // don't call wxWindow version to avoid flicker from calling // ::ShowWindow() -- we're going to show the window at the correct // location directly below -- but do call the wxWindowBase version // to sync the internal m_isShown flag wxWindowBase::Show(); flags |= SWP_SHOWWINDOW; } SetWindowPos(GetHwnd(), HWND_TOP, rect.x, rect.y, rect.width, rect.height, flags); #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400)) ::SHFullScreen(GetHwnd(), SHFS_HIDETASKBAR | SHFS_HIDESIPBUTTON); #endif // finally send an event allowing the window to relayout itself &c wxSizeEvent event(rect.GetSize(), GetId()); event.SetEventObject(this); HandleWindowEvent(event); } else // stop showing full screen { #if !defined(__HANDHELDPC__) && (defined(__WXWINCE__) && (_WIN32_WCE < 400)) ::SHFullScreen(GetHwnd(), SHFS_SHOWTASKBAR | SHFS_SHOWSIPBUTTON); #endif Maximize(m_fsIsMaximized); SetWindowLong(GetHwnd(),GWL_STYLE, m_fsOldWindowStyle); SetWindowPos(GetHwnd(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y, m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED); } return true; } // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW misc // ---------------------------------------------------------------------------- void wxTopLevelWindowMSW::SetTitle( const wxString& title) { SetLabel(title); } wxString wxTopLevelWindowMSW::GetTitle() const { return GetLabel(); } bool wxTopLevelWindowMSW::DoSelectAndSetIcon(const wxIconBundle& icons, int smX, int smY, int i) { const wxSize size(::GetSystemMetrics(smX), ::GetSystemMetrics(smY)); wxIcon icon = icons.GetIcon(size, wxIconBundle::FALLBACK_NEAREST_LARGER); if ( !icon.IsOk() ) return false; ::SendMessage(GetHwnd(), WM_SETICON, i, (LPARAM)GetHiconOf(icon)); return true; } void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons) { wxTopLevelWindowBase::SetIcons(icons); if ( icons.IsEmpty() ) { // FIXME: SetIcons(wxNullIconBundle) should unset existing icons, // but we currently don't do that wxASSERT_MSG( m_icons.IsEmpty(), "unsetting icons doesn't work" ); return; } DoSelectAndSetIcon(icons, SM_CXSMICON, SM_CYSMICON, ICON_SMALL); DoSelectAndSetIcon(icons, SM_CXICON, SM_CYICON, ICON_BIG); } bool wxTopLevelWindowMSW::EnableCloseButton(bool enable) { #if !defined(__WXMICROWIN__) // get system (a.k.a. window) menu HMENU hmenu = GetSystemMenu(GetHwnd(), FALSE /* get it */); if ( !hmenu ) { // no system menu at all -- ok if we want to remove the close button // anyhow, but bad if we want to show it return !enable; } // 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(wxT("EnableMenuItem(SC_CLOSE)")); return false; } #ifndef __WXWINCE__ // update appearance immediately if ( !::DrawMenuBar(GetHwnd()) ) { wxLogLastError(wxT("DrawMenuBar")); } #endif #endif // !__WXMICROWIN__ return true; } void wxTopLevelWindowMSW::RequestUserAttention(int flags) { // check if we can use FlashWindowEx(): unfortunately a simple test for // FLASHW_STOP doesn't work because MSVC6 headers do #define it but don't // provide FlashWindowEx() declaration, so try to detect whether we have // real headers for WINVER 0x0500 by checking for existence of a symbol not // declated in MSVC6 header #if defined(FLASHW_STOP) && defined(VK_XBUTTON1) && wxUSE_DYNLIB_CLASS // available in the headers, check if it is supported by the system typedef BOOL (WINAPI *FlashWindowEx_t)(FLASHWINFO *pfwi); static FlashWindowEx_t s_pfnFlashWindowEx = NULL; if ( !s_pfnFlashWindowEx ) { wxDynamicLibrary dllUser32(wxT("user32.dll")); s_pfnFlashWindowEx = (FlashWindowEx_t) dllUser32.GetSymbol(wxT("FlashWindowEx")); // we can safely unload user32.dll here, it's going to remain loaded as // long as the program is running anyhow } if ( s_pfnFlashWindowEx ) { WinStruct fwi; fwi.hwnd = GetHwnd(); fwi.dwFlags = FLASHW_ALL; if ( flags & wxUSER_ATTENTION_INFO ) { // just flash a few times fwi.uCount = 3; } else // wxUSER_ATTENTION_ERROR { // flash until the user notices it fwi.dwFlags |= FLASHW_TIMERNOFG; } s_pfnFlashWindowEx(&fwi); } else // FlashWindowEx() not available #endif // FlashWindowEx() defined { wxUnusedVar(flags); #ifndef __WXWINCE__ ::FlashWindow(GetHwnd(), TRUE); #endif // __WXWINCE__ } } wxMenu *wxTopLevelWindowMSW::MSWGetSystemMenu() const { #ifndef __WXUNIVERSAL__ if ( !m_menuSystem ) { HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE); if ( !hmenu ) { wxLogLastError(wxT("GetSystemMenu()")); return NULL; } wxTopLevelWindowMSW * const self = const_cast(this); self->m_menuSystem = wxMenu::MSWNewFromHMENU(hmenu); // We need to somehow associate this menu with this window to ensure // that we get events from it. A natural idea would be to pretend that // it's attached to our menu bar but this wouldn't work if we don't // have any menu bar which is a common case for applications using // custom items in the system menu (they mostly do it exactly because // they don't have any other menus). // // So reuse the invoking window pointer instead, this is not exactly // correct but doesn't seem to have any serious drawbacks. m_menuSystem->SetInvokingWindow(self); } #endif // #ifndef __WXUNIVERSAL__ return m_menuSystem; } // ---------------------------------------------------------------------------- // Transparency support // --------------------------------------------------------------------------- bool wxTopLevelWindowMSW::SetTransparent(wxByte alpha) { #if wxUSE_DYNLIB_CLASS typedef DWORD (WINAPI *PSETLAYEREDWINDOWATTR)(HWND, DWORD, BYTE, DWORD); static PSETLAYEREDWINDOWATTR pSetLayeredWindowAttributes = (PSETLAYEREDWINDOWATTR)-1; if ( pSetLayeredWindowAttributes == (PSETLAYEREDWINDOWATTR)-1 ) { wxDynamicLibrary dllUser32(wxT("user32.dll")); // use RawGetSymbol() and not GetSymbol() to avoid error messages under // Windows 95: there is nothing the user can do about this anyhow pSetLayeredWindowAttributes = (PSETLAYEREDWINDOWATTR) dllUser32.RawGetSymbol(wxT("SetLayeredWindowAttributes")); // it's ok to destroy dllUser32 here, we link statically to user32.dll // anyhow so it won't be unloaded } if ( !pSetLayeredWindowAttributes ) return false; #endif // wxUSE_DYNLIB_CLASS LONG exstyle = GetWindowLong(GetHwnd(), GWL_EXSTYLE); // if setting alpha to fully opaque then turn off the layered style if (alpha == 255) { SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle & ~WS_EX_LAYERED); Refresh(); return true; } #if wxUSE_DYNLIB_CLASS // Otherwise, set the layered style if needed and set the alpha value if ((exstyle & WS_EX_LAYERED) == 0 ) SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle | WS_EX_LAYERED); if ( pSetLayeredWindowAttributes(GetHwnd(), 0, (BYTE)alpha, LWA_ALPHA) ) return true; #endif // wxUSE_DYNLIB_CLASS return false; } bool wxTopLevelWindowMSW::CanSetTransparent() { // The API is available on win2k and above static int os_type = -1; static int ver_major = -1; if (os_type == -1) os_type = ::wxGetOsVersion(&ver_major); return (os_type == wxOS_WINDOWS_NT && ver_major >= 5); } void wxTopLevelWindowMSW::DoFreeze() { // do nothing: freezing toplevel window causes paint and mouse events // to go through it any TLWs under it, so the best we can do is to freeze // all children -- and wxWindowBase::Freeze() does that } void wxTopLevelWindowMSW::DoThaw() { // intentionally empty -- see DoFreeze() } // ---------------------------------------------------------------------------- // wxTopLevelWindow event handling // ---------------------------------------------------------------------------- void wxTopLevelWindowMSW::DoSaveLastFocus() { if ( m_iconized ) return; // remember the last focused child if it is our child m_winLastFocused = FindFocus(); if ( m_winLastFocused ) { // and don't remember it if it's a child from some other frame if ( wxGetTopLevelParent(m_winLastFocused) != this ) { m_winLastFocused = NULL; } } } void wxTopLevelWindowMSW::DoRestoreLastFocus() { wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent() : NULL; if ( !parent ) { parent = this; } wxSetFocusToChild(parent, &m_winLastFocused); } void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event) { if ( event.GetActive() ) { // We get WM_ACTIVATE before being restored from iconized state, so we // can be still iconized here. In this case, avoid restoring the focus // as it doesn't work anyhow and we will do when we're really restored. if ( m_iconized ) { event.Skip(); return; } // restore focus to the child which was last focused unless we already // have it wxLogTrace(wxT("focus"), wxT("wxTLW %p activated."), m_hWnd); wxWindow *winFocus = FindFocus(); if ( !winFocus || wxGetTopLevelParent(winFocus) != this ) DoRestoreLastFocus(); } else // deactivating { DoSaveLastFocus(); wxLogTrace(wxT("focus"), wxT("wxTLW %p deactivated, last focused: %p."), m_hWnd, m_winLastFocused ? GetHwndOf(m_winLastFocused) : NULL); event.Skip(); } } #if wxUSE_MENUS bool wxTopLevelWindowMSW::HandleMenuSelect(WXWORD nItem, WXWORD flags, WXHMENU hMenu) { // Ignore the special messages generated when the menu is closed (this is // the only case when the flags are set to -1), in particular don't clear // the help string in the status bar when this happens as it had just been // restored by the base class code. if ( !hMenu && flags == 0xffff ) return false; // Unfortunately we also need to ignore another message which is sent after // closing the currently active submenu of the menu bar by pressing Escape: // in this case we get WM_UNINITMENUPOPUP, from which we generate // wxEVT_MENU_CLOSE, and _then_ we get WM_MENUSELECT for the top level menu // from which we overwrite the help string just restored by OnMenuClose() // handler in wxFrameBase. To prevent this from happening we discard these // messages but only in the case it's really the top level menu as we still // need to clear the help string when a submenu is selected in a menu. if ( flags == (MF_POPUP | MF_HILITE) && !m_menuDepth ) return false; // sign extend to int from unsigned short we get from Windows int item = (signed short)nItem; // WM_MENUSELECT is generated for both normal items and menus, including // the top level menus of the menu bar, which can't be represented using // any valid identifier in wxMenuEvent so use an otherwise unused value for // them if ( flags & (MF_POPUP | MF_SEPARATOR) ) item = wxID_NONE; wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, item); event.SetEventObject(this); if ( HandleWindowEvent(event) ) return true; // by default, i.e. if the event wasn't handled above, clear the status bar // text when an item which can't have any associated help string in wx API // is selected if ( item == wxID_NONE ) DoGiveHelp(wxEmptyString, true); return false; } bool wxTopLevelWindowMSW::DoSendMenuOpenCloseEvent(wxEventType evtType, wxMenu* menu, bool popup) { // Update the menu depth when dealing with the top level menus. if ( !popup ) { if ( evtType == wxEVT_MENU_OPEN ) { m_menuDepth++; } else if ( evtType == wxEVT_MENU_CLOSE ) { wxASSERT_MSG( m_menuDepth > 0, wxS("No open menus?") ); m_menuDepth--; } else { wxFAIL_MSG( wxS("Unexpected menu event type") ); } } wxMenuEvent event(evtType, popup ? wxID_ANY : 0, menu); event.SetEventObject(menu); return HandleWindowEvent(event); } bool wxTopLevelWindowMSW::HandleExitMenuLoop(WXWORD isPopup) { return DoSendMenuOpenCloseEvent(wxEVT_MENU_CLOSE, isPopup ? wxCurrentPopupMenu : NULL, isPopup != 0); } bool wxTopLevelWindowMSW::HandleMenuPopup(wxEventType evtType, WXHMENU hMenu) { bool isPopup = false; wxMenu* menu = NULL; if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetHMenu() == hMenu ) { menu = wxCurrentPopupMenu; isPopup = true; } else { menu = MSWFindMenuFromHMENU(hMenu); } return DoSendMenuOpenCloseEvent(evtType, menu, isPopup); } wxMenu* wxTopLevelWindowMSW::MSWFindMenuFromHMENU(WXHMENU WXUNUSED(hMenu)) { // We don't have any menus at this level. return NULL; } #endif // wxUSE_MENUS // the DialogProc for all wxWidgets dialogs LONG APIENTRY _EXPORT wxDlgProc(HWND hDlg, UINT message, WPARAM WXUNUSED(wParam), LPARAM WXUNUSED(lParam)) { switch ( message ) { case WM_INITDIALOG: { // under CE, add a "Ok" button in the dialog title bar and make it full // screen // // TODO: find the window for this HWND, and take into account // wxMAXIMIZE and wxCLOSE_BOX. For now, assume both are present. // // Standard SDK doesn't have aygshell.dll: see // include/wx/msw/wince/libraries.h #if defined(__WXWINCE__) && !defined(__WINCE_STANDARDSDK__) && !defined(__HANDHELDPC__) SHINITDLGINFO shidi; shidi.dwMask = SHIDIM_FLAGS; shidi.dwFlags = SHIDIF_SIZEDLG // take account of the SIP or menubar #ifndef __SMARTPHONE__ | SHIDIF_DONEBUTTON #endif ; shidi.hDlg = hDlg; SHInitDialog( &shidi ); #else // no SHInitDialog() wxUnusedVar(hDlg); #endif // for WM_INITDIALOG, 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 for it as well return FALSE; } } // for almost all messages, returning 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(wxT("DestroyWindow(hidden TLW parent)")); } ms_hwnd = NULL; } if ( ms_className ) { if ( !::UnregisterClass(ms_className, wxGetInstance()) ) { wxLogLastError(wxT("UnregisterClass(\"wxTLWHiddenParent\")")); } ms_className = NULL; } } /* static */ HWND wxTLWHiddenParentModule::GetHWND() { if ( !ms_hwnd ) { if ( !ms_className ) { static const wxChar *HIDDEN_PARENT_CLASS = wxT("wxTLWHiddenParent"); WNDCLASS wndclass; wxZeroMemory(wndclass); wndclass.lpfnWndProc = DefWindowProc; wndclass.hInstance = wxGetInstance(); wndclass.lpszClassName = HIDDEN_PARENT_CLASS; if ( !::RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(\"wxTLWHiddenParent\")")); } else { ms_className = HIDDEN_PARENT_CLASS; } } ms_hwnd = ::CreateWindow(ms_className, wxEmptyString, 0, 0, 0, 0, 0, NULL, (HMENU)NULL, wxGetInstance(), NULL); if ( !ms_hwnd ) { wxLogLastError(wxT("CreateWindow(hidden TLW parent)")); } } return ms_hwnd; }