X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/14dd645ee16eb022afb19f35d0c8cfdf2d3cdee9..bf918b97ed1ee60dbf296fa36764e6ac3e514b94:/src/msw/toplevel.cpp diff --git a/src/msw/toplevel.cpp b/src/msw/toplevel.cpp index 2132b62467..4758fd9a52 100644 --- a/src/msw/toplevel.cpp +++ b/src/msw/toplevel.cpp @@ -35,21 +35,39 @@ #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 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 // ---------------------------------------------------------------------------- @@ -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 @@ -93,43 +124,59 @@ void wxTopLevelWindowMSW::Init() // 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; } -long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const +WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const { - long style = GetWindowStyle(); - long msflags = 0; + // 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 ) - { - if ( style & wxFRAME_TOOL_WINDOW ) - msflags |= WS_POPUPWINDOW; - else - msflags |= WS_OVERLAPPED; - } + 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 & wxTHICK_FRAME ) - msflags |= WS_THICKFRAME; if ( style & wxSYSTEM_MENU ) msflags |= WS_SYSMENU; if ( style & wxMINIMIZE ) msflags |= WS_MINIMIZE; if ( style & wxMAXIMIZE ) msflags |= WS_MAXIMIZE; - if ( style & wxCAPTION ) - msflags |= WS_CAPTION; - if ( style & wxCLIP_CHILDREN ) - msflags |= WS_CLIPCHILDREN; // Keep this here because it saves recoding this function in wxTinyFrame #if wxUSE_ITSY_BITSY && !defined(__WIN32__) @@ -144,32 +191,83 @@ long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const if ( exflags ) { - *exflags = MakeExtendedStyle(style); - - // 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 !defined(__WIN16__) && !defined(__SC__) - if ( (style & wxFRAME_TOOL_WINDOW) || (style & wxFRAME_NO_TASKBAR) ) - *exflags |= WS_EX_TOOLWINDOW; - else if ( !(style & wxFRAME_NO_TASKBAR) ) - *exflags |= WS_EX_APPWINDOW; -#endif + 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 ( m_exStyle & wxFRAME_EX_CONTEXTHELP ) - *exflags |= WS_EX_CONTEXTHELP; + if ( GetExtraStyle() & wxFRAME_EX_CONTEXTHELP ) + *exflags |= WS_EX_CONTEXTHELP; #endif // __WIN32__ } return msflags; } -bool wxTopLevelWindowMSW::CreateDialog(const wxChar *dlgTemplate, +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) @@ -186,23 +284,40 @@ bool wxTopLevelWindowMSW::CreateDialog(const wxChar *dlgTemplate, 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)::CreateDialog(wxGetInstance(), - 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(_("Did you forget to include wx/msw/wx.rc in your resources?")); + wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?")); - wxLogSysError(_("Can't create dialog using template '%s'"), dlgTemplate); + wxLogSysError(wxT("Can't create dialog using memory template")); return FALSE; } - long exflags; + WXDWORD exflags; (void)MSWGetCreateWindowFlags(&exflags); if ( exflags ) @@ -236,14 +351,39 @@ bool wxTopLevelWindowMSW::CreateDialog(const wxChar *dlgTemplate, // move the dialog to its initial position without forcing repainting int x, y, w, h; - if ( MSWGetCreateWindowCoords(pos, size, x, y, w, h) ) + if ( !MSWGetCreateWindowCoords(pos, size, x, y, w, h) ) { - if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) ) - { - wxLogLastError(wxT("MoveWindow")); - } + 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")); } - //else: leave it at default position if ( !title.empty() ) { @@ -260,8 +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); } @@ -290,28 +430,38 @@ 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) - const wxChar *dlgTemplate; - if ( style & wxRESIZE_BORDER ) - dlgTemplate = wxT("wxResizeableDialog"); - else if ( style & wxCAPTION ) - dlgTemplate = wxT("wxCaptionDialog"); - else - dlgTemplate = wxT("wxNoCaptionDialog"); - return CreateDialog(dlgTemplate, title, pos, size); + // 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 { @@ -321,59 +471,23 @@ bool wxTopLevelWindowMSW::Create(wxWindow *parent, 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)); } } } -// ---------------------------------------------------------------------------- -// wxTopLevelWindowMSW geometry -// ---------------------------------------------------------------------------- - -void wxTopLevelWindowMSW::DoSetClientSize(int width, int height) -{ - HWND hWnd = GetHwnd(); - - RECT rectClient; - ::GetClientRect(hWnd, &rectClient); - - RECT rectTotal; - ::GetWindowRect(hWnd, &rectTotal); - - // Find the difference between the entire window (title bar and all) - // and the client area; add this to the new client size to move the - // window - width += rectTotal.right - rectTotal.left - rectClient.right; - height += rectTotal.bottom - rectTotal.top - rectClient.bottom; - - // note that calling GetClientAreaOrigin() takes the toolbar into account - wxPoint pt = GetClientAreaOrigin(); - width += pt.x; - height += pt.y; - - if ( !::MoveWindow(hWnd, rectTotal.left, rectTotal.top, - width, height, TRUE /* redraw */) ) - { - wxLogLastError(_T("MoveWindow")); - } - - wxSizeEvent event(wxSize(width, height), m_windowId); - event.SetEventObject(this); - (void)GetEventHandler()->ProcessEvent(event); -} - // ---------------------------------------------------------------------------- // wxTopLevelWindowMSW showing // ---------------------------------------------------------------------------- @@ -403,7 +517,10 @@ 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 @@ -450,7 +567,7 @@ 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; } } @@ -477,20 +594,290 @@ 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) { - // 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(GetHwnd(), WM_SETICON, - (WPARAM)TRUE, (LPARAM)GetHiconOf(m_icon)); + ::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; +} + +// ---------------------------------------------------------------------------- +// 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; +} +