X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6e8515a3e39851ec562ee3def4ffcced182df110..70bae0166cbe2a91663036dd83880ad158a2fea8:/src/msw/toplevel.cpp diff --git a/src/msw/toplevel.cpp b/src/msw/toplevel.cpp index e77677c7d4..b12a323c5a 100644 --- a/src/msw/toplevel.cpp +++ b/src/msw/toplevel.cpp @@ -6,7 +6,7 @@ // Created: 24.09.01 // RCS-ID: $Id$ // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com) -// License: wxWindows license +// License: wxWindows licence /////////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -35,10 +35,23 @@ #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/display.h" + +#ifndef ICON_BIG + #define ICON_BIG 1 +#endif + +#ifndef ICON_SMALL + #define ICON_SMALL 0 +#endif + // ---------------------------------------------------------------------------- // stubs for missing functions under MicroWindows // ---------------------------------------------------------------------------- @@ -50,6 +63,11 @@ 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 // ---------------------------------------------------------------------------- @@ -60,27 +78,40 @@ 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 // ============================================================================ -// Dialog window proc -LONG APIENTRY _EXPORT -wxDlgProc(HWND WXUNUSED(hWnd), UINT message, WPARAM WXUNUSED(wParam), LPARAM WXUNUSED(lParam)) -{ - if ( message == WM_INITDIALOG ) - { - // for this message, returning TRUE tells system to set focus to the - // first control in the dialog box - return TRUE; - } - else - { - // for all the other ones, FALSE means that we didn't process the - // message - return FALSE; - } -} +BEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase) + EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate) +END_EVENT_TABLE() // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW creation @@ -99,22 +130,28 @@ void wxTopLevelWindowMSW::Init() m_fsOldWindowStyle = 0; m_fsIsMaximized = FALSE; m_fsIsShowing = FALSE; + + m_winLastFocused = (wxWindow *)NULL; } -long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const +WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const { - long style = GetWindowStyle(); + // 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; // 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 - long msflags; if ( style & wxFRAME_TOOL_WINDOW ) - msflags = WS_POPUP; + msflags |= WS_POPUP; else - msflags = WS_OVERLAPPED; + msflags |= WS_OVERLAPPED; // border and caption styles if ( style & wxRESIZE_BORDER ) @@ -141,9 +178,6 @@ long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const if ( style & wxMAXIMIZE ) msflags |= WS_MAXIMIZE; - if ( style & wxCLIP_CHILDREN ) - msflags |= WS_CLIPCHILDREN; - // Keep this here because it saves recoding this function in wxTinyFrame #if wxUSE_ITSY_BITSY && !defined(__WIN32__) if ( style & wxTINY_CAPTION_VERT ) @@ -157,19 +191,33 @@ long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const if ( exflags ) { - *exflags = MakeExtendedStyle(style); - -#if !defined(__WIN16__) && !defined(__SC__) +#if !defined(__WIN16__) if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ) { - // make all frames appear in the win9x shell taskbar unless - // wxFRAME_TOOL_WINDOW or wxFRAME_NO_TASKBAR is given - without - // giving them WS_EX_APPWINDOW style, the child (i.e. owned) frames - // wouldn't appear in it - if ( (style & wxFRAME_TOOL_WINDOW) || (style & wxFRAME_NO_TASKBAR) ) + if ( style & wxFRAME_TOOL_WINDOW ) + { + // create the palette-like window *exflags |= WS_EX_TOOLWINDOW; - else if ( !(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] } #endif // !Win16 @@ -177,7 +225,7 @@ long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const *exflags |= WS_EX_TOPMOST; #ifdef __WIN32__ - if ( m_exStyle & wxFRAME_EX_CONTEXTHELP ) + if ( GetExtraStyle() & wxFRAME_EX_CONTEXTHELP ) *exflags |= WS_EX_CONTEXTHELP; #endif // __WIN32__ } @@ -185,6 +233,40 @@ long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const 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, @@ -218,21 +300,24 @@ bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate, } } - m_hWnd = (WXHWND)::CreateDialogIndirect(wxGetInstance(), - (DLGTEMPLATE*)dlgTemplate, - parent ? GetHwndOf(parent) : NULL, - (DLGPROC)wxDlgProc); + m_hWnd = (WXHWND)::CreateDialogIndirect + ( + wxGetInstance(), + (DLGTEMPLATE*)dlgTemplate, + parent ? GetHwndOf(parent) : NULL, + (DLGPROC)wxDlgProc + ); if ( !m_hWnd ) { - wxFAIL_MSG(_("Failed to create dialog. Incorrect DLGTEMPLATE?")); + wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?")); - wxLogSysError(_("Can't create dialog using memory template")); + wxLogSysError(wxT("Can't create dialog using memory template")); return FALSE; } - long exflags; + WXDWORD exflags; (void)MSWGetCreateWindowFlags(&exflags); if ( exflags ) @@ -315,8 +400,8 @@ bool wxTopLevelWindowMSW::CreateFrame(const wxString& title, const wxPoint& pos, const wxSize& size) { - long exflags; - long flags = MSWGetCreateWindowFlags(&exflags); + WXDWORD exflags; + WXDWORD flags = MSWGetCreateWindowFlags(&exflags); return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags); } @@ -329,6 +414,8 @@ bool wxTopLevelWindowMSW::Create(wxWindow *parent, long style, const wxString& name) { + bool ret = false; + // init our fields Init(); @@ -345,59 +432,65 @@ bool wxTopLevelWindowMSW::Create(wxWindow *parent, if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG ) { - // TODO: it would be better to construct the dialog template in memory - // during run-time than to rely on the limited number of - // templates in wx.rc because: - // a) you wouldn't have to include wx.rc in all wxWin programs - // (and the number of complaints about it would dtop) - // b) we'd be able to provide more templates simply, i.e. - // we could generate the templates for all style - // combinations - // 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) - int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3); - DLGTEMPLATE* dlgTemplate = (DLGTEMPLATE*)malloc( dlgsize ); - memset (dlgTemplate, 0, dlgsize ); + + // 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; - if ( style & wxRESIZE_BORDER ) - dlgTemplate->style = DS_MODALFRAME | WS_CAPTION | WS_POPUP | WS_SYSMENU | WS_THICKFRAME; - else if ( style & wxCAPTION ) - dlgTemplate->style = DS_MODALFRAME | WS_CAPTION | WS_POPUP | WS_SYSMENU; - else - dlgTemplate->style = WS_POPUP; + // 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; - bool ret = CreateDialog(dlgTemplate, title, pos, size); + // force 3D-look if necessary, it looks impossibly ugly otherwise + if ( style & (wxRESIZE_BORDER | wxCAPTION) ) + dlgTemplate->style |= DS_MODALFRAME; + + ret = CreateDialog(dlgTemplate, title, pos, size); free(dlgTemplate); - return ret; } else // !dialog { - return CreateFrame(title, pos, size); + ret = CreateFrame(title, pos, size); + } + + if ( ret && !(GetWindowStyleFlag() & wxCLOSE_BOX) ) + { + EnableCloseButton(false); } + + return ret; } wxTopLevelWindowMSW::~wxTopLevelWindowMSW() { - wxTopLevelWindows.DeleteObject(this); - if ( wxModelessWindows.Find(this) ) wxModelessWindows.DeleteObject(this); - // If this is the last top-level window, exit. - if ( wxTheApp && (wxTopLevelWindows.Number() == 0) ) + // 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) ) { - wxTheApp->SetTopWindow(NULL); - - if ( wxTheApp->GetExitOnFrameDelete() ) + wxWindow *parent = GetParent(); + if ( parent ) { - ::PostQuitMessage(0); + ::BringWindowToTop(GetHwndOf(parent)); } } } @@ -431,7 +524,10 @@ bool wxTopLevelWindowMSW::Show(bool show) } else // just show { - nShowCmd = SW_SHOW; + if ( GetWindowStyle() & wxFRAME_TOOL_WINDOW ) + nShowCmd = SW_SHOWNA; + else + nShowCmd = SW_SHOW; } } else // hide @@ -478,7 +574,7 @@ void wxTopLevelWindowMSW::Maximize(bool maximize) { // 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 = TRUE; + m_maximizeOnShow = maximize; } } @@ -511,18 +607,22 @@ void wxTopLevelWindowMSW::Restore() bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style) { - if (show) + if ( show == IsFullScreen() ) { - if (IsFullScreen()) - return FALSE; + // nothing to do + return TRUE; + } + + m_fsIsShowing = show; - m_fsIsShowing = TRUE; + if ( show ) + { m_fsStyle = style; // zap the frame borders // save the 'normal' window style - m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE); + m_fsOldWindowStyle = GetWindowLong(GetHwnd(), GWL_STYLE); // save the old position, width & height, maximize state m_fsOldSize = GetRect(); @@ -535,44 +635,64 @@ bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style) if (style & wxFULLSCREEN_NOBORDER) offFlags |= WS_BORDER | WS_THICKFRAME; if (style & wxFULLSCREEN_NOCAPTION) - offFlags |= (WS_CAPTION | WS_SYSMENU); + offFlags |= WS_CAPTION | WS_SYSMENU; - newStyle &= (~offFlags); + 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; + ::SetWindowLong(GetHwnd(), GWL_STYLE, newStyle); - RECT rect = wxGetWindowRect(::GetDesktopWindow()); - width = rect.right - rect.left; - height = rect.bottom - rect.top; + 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 +#else // wxUSE_DISPLAY + { + // resize to the size of the desktop + wxCopyRECTToRect(wxGetWindowRect(::GetDesktopWindow()), rect); + } +#endif // wxUSE_DISPLAY - SetSize(width, height); + SetSize(rect); // now flush the window style cache and actually go full-screen - SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED); + long flags = SWP_FRAMECHANGED; - wxSizeEvent event(wxSize(width, height), GetId()); - GetEventHandler()->ProcessEvent(event); + // 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(); - return TRUE; - } - else - { - if (!IsFullScreen()) - return FALSE; + flags |= SWP_SHOWWINDOW; + } - m_fsIsShowing = FALSE; + SetWindowPos(GetHwnd(), HWND_TOP, + rect.x, rect.y, rect.width, rect.height, + flags); + // finally send an event allowing the window to relayout itself &c + wxSizeEvent event(rect.GetSize(), GetId()); + GetEventHandler()->ProcessEvent(event); + } + else // stop showing full screen + { Maximize(m_fsIsMaximized); - SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle); - SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y, + 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; } + + return TRUE; } // ---------------------------------------------------------------------------- @@ -581,14 +701,26 @@ bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style) void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon) { - // this sets m_icon - wxTopLevelWindowBase::SetIcon(icon); + SetIcons( wxIconBundle( icon ) ); +} + +void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons) +{ + wxTopLevelWindowBase::SetIcons(icons); #if defined(__WIN95__) && !defined(__WXMICROWIN__) - if ( m_icon.Ok() ) + 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(GetHwnd(), WM_SETICON, - (WPARAM)TRUE, (LPARAM)GetHiconOf(m_icon)); + ::SendMessage( GetHwndOf( this ), WM_SETICON, ICON_BIG, + (LPARAM)GetHiconOf(big) ); } #endif // __WIN95__ } @@ -600,9 +732,9 @@ bool wxTopLevelWindowMSW::EnableCloseButton(bool enable) HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE /* get it */); if ( !hmenu ) { - wxLogLastError(_T("GetSystemMenu")); - - return FALSE; + // 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 @@ -626,3 +758,202 @@ bool wxTopLevelWindowMSW::EnableCloseButton(bool enable) return TRUE; } +bool wxTopLevelWindowMSW::SetShape(const wxRegion& region) +{ + wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), FALSE, + _T("Shaped windows must be created with the wxFRAME_SHAPED style.")); + + // 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(); + + if ( m_winLastFocused ) + { + // let it know that it doesn't have focus any more + m_winLastFocused->HandleKillFocus((WXHWND)NULL); + } + + // 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; +} + +