自学教程：C++ HTML_TRACE函数代码示例

static ULONGhtml_Release(html_t* html){    ULONG refs;    HTML_TRACE("html_Release(%d -> %d)", (int) html->refs, (int) html->refs-1);    refs = mc_unref(&html->refs);    if(refs == 0) {        HTML_TRACE("html_Release: Freeing the HTML object.");        free(html);    }    return refs;}

static HRESULT STDMETHODCALLTYPEdispatch_GetTypeInfo(IDispatch* self, UINT index, LCID lcid, ITypeInfo** type_info){    HTML_TRACE("dispatch_GetTypeInfo: Stub [TYPE_E_ELEMENTNOTFOUND]");    *type_info = NULL;    return TYPE_E_ELEMENTNOTFOUND;}

static HRESULT STDMETHODCALLTYPEui_handler_TranslateAccelerator(IDocHostUIHandler* self, MSG* msg,            const GUID* guid, DWORD cmd_id){    HTML_TRACE("ui_handler_TranslateAccelerator: Stub [S_FALSE]");    return S_FALSE;}

static HRESULT STDMETHODCALLTYPEinplace_site_ex_GetWindow(IOleInPlaceSiteEx* self, HWND* win){    HTML_TRACE("inplace_site_GetWindow");    *win = MC_HTML_FROM_INPLACE_SITE_EX(self)->win;    return S_OK;}

static LRESULThtml_notify_text(html_t* html, UINT code, const WCHAR* text){    /* Note we shamelessly misuse this also for URL notifications, as the     * MC_NMHTMLURL and MC_NMHTMLTEXT are binary compatible.     * They are separate mainly for historical reasons.     */    MC_NMHTMLTEXTW notify;    LRESULT res;    BOOL need_free = FALSE;    HTML_TRACE("html_notify_text: code=%d str='%S'", code, text ? text : L"[null]");    notify.hdr.hwndFrom = html->win;    notify.hdr.idFrom = GetDlgCtrlID(html->win);    notify.hdr.code = code;    if(text == NULL) {        notify.pszText = L"";    } else if(html->unicode_notifications) {        notify.pszText = text;    } else {        notify.pszText = (WCHAR*) mc_str(text, MC_STRW, MC_STRA);        need_free = TRUE;    }    res = MC_SEND(html->notify_win, WM_NOTIFY, notify.hdr.idFrom, &notify);    if(need_free)        free((WCHAR*)notify.pszText);    return res;}

static HRESULT STDMETHODCALLTYPEclient_site_GetContainer(IOleClientSite* self, LPOLECONTAINER* container){    HTML_TRACE("client_site_GetContainer: Stub [E_NOINTERFACE]");    *container = NULL;    return E_NOINTERFACE;}

static HRESULT STDMETHODCALLTYPEinplace_frame_SetActiveObject(IOleInPlaceFrame* self,            IOleInPlaceActiveObject *active_obj, LPCOLESTR obj_name){    HTML_TRACE("inplace_frame_SetActiveObject: Stub [S_OK]");    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_frame_GetWindow(IOleInPlaceFrame* self, HWND* win){    HTML_TRACE("inplace_frame_GetWindow");    *win = GetAncestor(MC_HTML_FROM_INPLACE_FRAME(self)->win, GA_ROOT);    return(S_OK);}

static HRESULT STDMETHODCALLTYPEui_handler_GetOptionKeyPath(IDocHostUIHandler* self, LPOLESTR* key, DWORD reserved){    HTML_TRACE("ui_handler_GetOptionKeyPath: Stub [E_NOTIMPL]");    *key = NULL;    return E_NOTIMPL;}

static HRESULT STDMETHODCALLTYPEdispatch_GetTypeInfoCount(IDispatch* self, UINT* count){    HTML_TRACE("dispatch_GetTypeInfoCount: [S_OK]");    *count = 0;    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_frame_SetMenu(IOleInPlaceFrame* self, HMENU menu_shared,            HOLEMENU old_menu, HWND active_obj){    HTML_TRACE("inplace_frame_SetMenu: Stub [S_OK]");    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_frame_InsertMenus(IOleInPlaceFrame* self, HMENU menu_shared,            LPOLEMENUGROUPWIDTHS menu_widths){    HTML_TRACE("inplace_frame_InsertMenus: Stub [E_NOTIMPL]");    return E_NOTIMPL;}

static HRESULT STDMETHODCALLTYPEui_handler_ResizeBorder(IDocHostUIHandler* self, const RECT* rect,                IOleInPlaceUIWindow* inplace_win, BOOL is_frame_win){    HTML_TRACE("ui_handler_ResizeBorder: Stub [S_OK]");    return S_OK;}

static HRESULT STDMETHODCALLTYPEui_handler_ShowUI(IDocHostUIHandler* self, DWORD id, IOleInPlaceActiveObject* active_obj,                IOleCommandTarget* target, IOleInPlaceFrame* inplace_frame,                IOleInPlaceUIWindow* doc){    HTML_TRACE("ui_handler_ShowUI: Stub [S_OK]");    return S_OK;}

static HRESULT STDMETHODCALLTYPEui_handler_GetDropTarget(IDocHostUIHandler* self, IDropTarget* drop_target,            IDropTarget** p_drop_target){    HTML_TRACE("ui_handler_GetDropTarget: Stub [E_NOTIMPL]");    *p_drop_target = NULL;    return E_NOTIMPL;}

static HRESULT STDMETHODCALLTYPEui_handler_TranslateUrl(IDocHostUIHandler* self, DWORD reserved,                        OLECHAR* url, OLECHAR** p_url){    HTML_TRACE("ui_handler_TranslateUrl('%S'): Stub [S_FALSE]", url);    *p_url = NULL;    return S_FALSE;}

static HRESULT STDMETHODCALLTYPEclient_site_GetMoniker(IOleClientSite* self, DWORD assign, DWORD moniker_id,                       IMoniker** moniker){    HTML_TRACE("client_site_GetMoniker: Stub [E_NOTIMPL]");    *moniker = NULL;    return E_NOTIMPL;}

static HRESULT STDMETHODCALLTYPEinplace_site_ex_OnInPlaceActivateEx(IOleInPlaceSiteEx* self, BOOL* no_redraw,                                    DWORD flags){    HTML_TRACE("inplace_site_OnInPlaceActivateEx(): Stub [S_OK]");    *no_redraw = TRUE;    return S_OK;}

static HRESULT STDMETHODCALLTYPEui_handler_FilterDataObject(IDocHostUIHandler* self, IDataObject* obj,            IDataObject** p_obj){    HTML_TRACE("ui_handler_FilterDataObject: Stub [S_FALSE]");    *p_obj = NULL;    return S_FALSE;}

static HRESULT STDMETHODCALLTYPEdispatch_GetIDsOfNames(IDispatch* self, REFIID riid, LPOLESTR* names,                       UINT names_count, LCID lcid, DISPID* disp_id){    HTML_TRACE("dispatch_GetIDsOfNames('%S'): Stub [E_NOTIMPL]",               names_count > 0 ? names[0] : L"");    *disp_id = DISPID_UNKNOWN;    return E_NOTIMPL;}

static voidhtml_notify_format(html_t* html){    LRESULT lres;    lres = MC_SEND(html->notify_win, WM_NOTIFYFORMAT, html->win, NF_QUERY);    html->unicode_notifications = (lres == NFR_UNICODE ? 1 : 0);    HTML_TRACE("html_notify_format: Will use %s notifications.",               html->unicode_notifications ? "Unicode" : "ANSI");}

static HRESULT STDMETHODCALLTYPEinplace_site_ex_GetWindowContext(IOleInPlaceSiteEx* self, LPOLEINPLACEFRAME* frame,                LPOLEINPLACEUIWINDOW* doc, RECT* rect, RECT* clip_rect,                LPOLEINPLACEFRAMEINFO frame_info){    html_t* html;    HTML_TRACE("inplace_site_GetWindowContext");    html = MC_HTML_FROM_INPLACE_SITE_EX(self);    *frame = &html->inplace_frame;    (*frame)->lpVtbl->AddRef(*frame);    *doc = NULL;    frame_info->fMDIApp = FALSE;    frame_info->hwndFrame = GetAncestor(html->win, GA_ROOT);    frame_info->haccel = NULL;    frame_info->cAccelEntries = 0;    GetClientRect(html->win, rect);    GetClientRect(html->win, clip_rect);    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_site_ex_OnPosRectChange(IOleInPlaceSiteEx* self, const RECT* rect){    IOleInPlaceObject* inplace;    HRESULT hr;    html_t* html;    HTML_TRACE("inplace_site_OnPosRectChange");    html = MC_HTML_FROM_INPLACE_SITE_EX(self);    hr = html->browser_obj->lpVtbl->QueryInterface(html->browser_obj,                        &IID_IOleInPlaceObject, (void**)&inplace);    if(MC_ERR(hr != S_OK  ||  inplace == NULL)) {        MC_TRACE("inplace_site_ex_OnPosRectChange: "                 "QueryInterface(IID_IOleInPlaceObject) failed [0x%lx]", hr);        return E_UNEXPECTED;    }    inplace->lpVtbl->SetObjectRects(inplace, rect, rect);    inplace->lpVtbl->Release(inplace);    return S_OK;}

static HRESULT STDMETHODCALLTYPEui_handler_GetHostInfo(IDocHostUIHandler* self, DOCHOSTUIINFO* info){    if(info == NULL || info->cbSize < sizeof(DOCHOSTUIINFO)) {        HTML_TRACE("ui_handler_GetHostInfo: info->cbSize == %lu "                   "[E_UNEXPECTED]", info->cbSize);        return E_UNEXPECTED;    }    /* Host window is responsible for outer border (the host window may use     * WS_BORDER and/or WS_EX_CLIENTEDGE) */    info->dwFlags |= DOCHOSTUIFLAG_NO3DOUTERBORDER;    /* Check whether the controls on HTML page should use XP theming. */    if(mcIsThemeActive()) {        info->dwFlags &= ~DOCHOSTUIFLAG_NOTHEME;        info->dwFlags |= DOCHOSTUIFLAG_THEME;    } else {        info->dwFlags |= DOCHOSTUIFLAG_NOTHEME;        info->dwFlags &= ~DOCHOSTUIFLAG_THEME;    }    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_frame_EnableModeless(IOleInPlaceFrame* self, BOOL enable){    HTML_TRACE("inplace_frame_EnableModeless(%d): Stub [S_OK]", enable);    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_frame_SetStatusText(IOleInPlaceFrame* self, LPCOLESTR status_text){    HTML_TRACE("inplace_frame_SetStatusText: Stub [S_OK]: '%ls'", status_text);    return S_OK;}

static HRESULT STDMETHODCALLTYPEinplace_frame_TranslateAccelerator(IOleInPlaceFrame* self, MSG* msg, WORD id){    HTML_TRACE("inplace_frame_TranslateAccelerator: Stub [E_NOTIMPL]");    return E_NOTIMPL;}

static HRESULT STDMETHODCALLTYPEui_handler_UpdateUI(IDocHostUIHandler* self){    HTML_TRACE("ui_handler_UpdateUI: Stub [S_OK]");    return S_OK;}

static HRESULT STDMETHODCALLTYPEui_handler_EnableModeless(IDocHostUIHandler* self, BOOL enable){    HTML_TRACE("ui_handler_EnableModeless(%d): Stub [S_OK]", enable);    return S_OK;}

static HRESULT STDMETHODCALLTYPEui_handler_OnFrameWindowActivate(IDocHostUIHandler* self, BOOL active){    HTML_TRACE("ui_handler_OnFrameWindowActivate(%d): Stub [S_OK]", active);    return S_OK;}