C++ wxLogApiError函数代码示例

bool wxDisplayImplDirectDraw::ChangeMode(const wxVideoMode& mode)
{
    wxWindow *winTop = wxTheApp->GetTopWindow();
    wxCHECK_MSG( winTop, false, wxT("top level window required for DirectX") );

    HRESULT hr = m_pDD2->SetCooperativeLevel
                         (
                            GetHwndOf(winTop),
                            DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN
                         );
    if ( FAILED(hr) )
    {
        wxLogApiError(wxT("IDirectDraw2::SetCooperativeLevel"), hr);

        return false;
    }

    hr = m_pDD2->SetDisplayMode(mode.w, mode.h, mode.bpp, mode.refresh, 0);
    if ( FAILED(hr) )
    {
        wxLogApiError(wxT("IDirectDraw2::SetDisplayMode"), hr);

        return false;
    }

    return true;
}

bool wxTaskBarButtonImpl::InitOrUpdateThumbBarButtons()
{
    THUMBBUTTON buttons[MAX_BUTTON_COUNT];
    HRESULT hr;

    for ( size_t i = 0; i < MAX_BUTTON_COUNT; ++i )
    {
        memset(&buttons[i], 0, sizeof buttons[i]);
        buttons[i].iId = i;
        buttons[i].dwFlags = THBF_HIDDEN;
        buttons[i].dwMask = static_cast<THUMBBUTTONMASK>(THB_FLAGS);
    }

    for ( size_t i = 0; i < m_thumbBarButtons.size(); ++i )
    {
        buttons[i].hIcon = GetHiconOf(m_thumbBarButtons[i]->GetIcon());
        buttons[i].dwFlags = GetNativeThumbButtonFlags(*m_thumbBarButtons[i]);
        buttons[i].dwMask = static_cast<THUMBBUTTONMASK>(THB_ICON | THB_FLAGS);
        wxString tooltip = m_thumbBarButtons[i]->GetTooltip();
        if ( tooltip.empty() )
            continue;

        // Truncate the tooltip if its length longer than szTip(THUMBBUTTON)
        // allowed length (260).
        tooltip.Truncate(260);
        wxStrlcpy(buttons[i].szTip, tooltip.t_str(), tooltip.length());
        buttons[i].dwMask =
            static_cast<THUMBBUTTONMASK>(buttons[i].dwMask | THB_TOOLTIP);
    }

    if ( !m_hasInitThumbnailToolbar )
    {
        hr = m_taskbarList->ThumbBarAddButtons(m_parent->GetHWND(),
                                               MAX_BUTTON_COUNT,
                                               buttons);
        if ( FAILED(hr) )
        {
            wxLogApiError(wxT("ITaskbarList3::ThumbBarAddButtons"), hr);
        }
        m_hasInitThumbnailToolbar = true;
    }
    else
    {
        hr = m_taskbarList->ThumbBarUpdateButtons(m_parent->GetHWND(),
                                                  MAX_BUTTON_COUNT,
                                                  buttons);
        if ( FAILED(hr) )
        {
            wxLogApiError(wxT("ITaskbarList3::ThumbBarUpdateButtons"), hr);
        }
    }

    return SUCCEEDED(hr);
}

bool wxTextEntry::AutoCompleteFileNames()
{
#ifdef HAS_AUTOCOMPLETE
    typedef HRESULT (WINAPI *SHAutoComplete_t)(HWND, DWORD);
    static SHAutoComplete_t s_pfnSHAutoComplete = (SHAutoComplete_t)-1;
    static wxDynamicLibrary s_dllShlwapi;
    if ( s_pfnSHAutoComplete == (SHAutoComplete_t)-1 )
    {
        if ( !s_dllShlwapi.Load(wxT("shlwapi.dll"), wxDL_VERBATIM | wxDL_QUIET) )
        {
            s_pfnSHAutoComplete = NULL;
        }
        else
        {
            wxDL_INIT_FUNC(s_pfn, SHAutoComplete, s_dllShlwapi);
        }
    }

    if ( !s_pfnSHAutoComplete )
        return false;

    HRESULT hr = (*s_pfnSHAutoComplete)(GetEditHwnd(), SHACF_FILESYS_ONLY);
    if ( FAILED(hr) )
    {
        wxLogApiError(wxT("SHAutoComplete()"), hr);

        return false;
    }
    return true;
#else // !HAS_AUTOCOMPLETE
    return false;
#endif // HAS_AUTOCOMPLETE/!HAS_AUTOCOMPLETE
}

// Helper wrapping AssocQueryString() Win32 function: returns the value of the
// given associated string for the specified extension (which may or not have
// the leading period).
//
// Returns empty string if the association is not found.
static
wxString wxAssocQueryString(ASSOCSTR assoc,
                            wxString ext,
                            const wxString& verb = wxString())
{
    typedef HRESULT (WINAPI *AssocQueryString_t)(ASSOCF, ASSOCSTR,
                                                  LPCTSTR, LPCTSTR, LPTSTR,
                                                  DWORD *);
    static AssocQueryString_t s_pfnAssocQueryString = (AssocQueryString_t)-1;
    static wxDynamicLibrary s_dllShlwapi;

    if ( s_pfnAssocQueryString == (AssocQueryString_t)-1 )
    {
        if ( !s_dllShlwapi.Load(wxT("shlwapi.dll"), wxDL_VERBATIM | wxDL_QUIET) )
            s_pfnAssocQueryString = NULL;
        else
            wxDL_INIT_FUNC_AW(s_pfn, AssocQueryString, s_dllShlwapi);
    }

    if ( !s_pfnAssocQueryString )
        return wxString();


    DWORD dwSize = MAX_PATH;
    TCHAR bufOut[MAX_PATH] = { 0 };

    if ( ext.empty() || ext[0] != '.' )
        ext.Prepend('.');

    HRESULT hr = s_pfnAssocQueryString
                 (
                    wxASSOCF_NOTRUNCATE,// Fail if buffer is too small.
                    assoc,              // The association to retrieve.
                    ext.t_str(),        // The extension to retrieve it for.
                    verb.empty() ? NULL
                                 : static_cast<const TCHAR*>(verb.t_str()),
                    bufOut,             // The buffer for output value.
                    &dwSize             // And its size
                 );

    // Do not use SUCCEEDED() here as S_FALSE could, in principle, be returned
    // but would still be an error in this context.
    if ( hr != S_OK )
    {
        // The only really expected error here is that no association is
        // defined, anything else is not expected. The confusing thing is that
        // different errors are returned for this expected error under
        // different Windows versions: XP returns ERROR_FILE_NOT_FOUND while 7
        // returns ERROR_NO_ASSOCIATION. Just check for both to be sure.
        if ( hr != HRESULT_FROM_WIN32(ERROR_NO_ASSOCIATION) &&
                hr != HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) )
        {
            wxLogApiError("AssocQueryString", hr);
        }

        return wxString();
    }

    return wxString(bufOut);
}

wxCondError wxConditionInternal::WaitTimeout(unsigned long milliseconds)
{
    wxLongLong curtime = wxGetLocalTimeMillis();
    curtime += milliseconds;
    wxLongLong temp = curtime / 1000;
    int sec = temp.GetLo();
    temp *= 1000;
    temp = curtime - temp;
    int millis = temp.GetLo();

    timespec tspec;

    tspec.tv_sec = sec;
    tspec.tv_nsec = millis * 1000L * 1000L;

    int err = pthread_cond_timedwait( &m_cond, GetPMutex(), &tspec );
    switch ( err )
    {
        case ETIMEDOUT:
            return wxCOND_TIMEOUT;

        case 0:
            return wxCOND_NO_ERROR;

        default:
            wxLogApiError(_T("pthread_cond_timedwait()"), err);
    }

    return wxCOND_MISC_ERROR;
}

/* static */
wxTaskBarButton* wxTaskBarButton::New(wxWindow* parent)
{
    wxITaskbarList3* taskbarList = NULL;

    HRESULT hr = CoCreateInstance
                 (
                    wxCLSID_TaskbarList,
                    NULL,
                    CLSCTX_INPROC_SERVER,
                    wxIID_ITaskbarList3,
                    reinterpret_cast<void **>(&taskbarList)
                 );
    if ( FAILED(hr) )
    {
        // Don't log this error, it may be normal when running under XP.
        return NULL;
    }

    hr = taskbarList->HrInit();
    if ( FAILED(hr) )
    {
        // This is however unexpected.
        wxLogApiError(wxT("ITaskbarList3::Init"), hr);

        taskbarList->Release();
        return NULL;
    }

    return new wxTaskBarButtonImpl(taskbarList, parent);
}

wxMutexError wxMutexInternal::HandleLockResult(int err)
{
    // wxPrintf( "err %d\n", err );

    switch ( err )
    {
        case EDEADLK:
            // only error checking mutexes return this value and so it's an
            // unexpected situation -- hence use assert, not wxLogDebug
            wxFAIL_MSG( _T("mutex deadlock prevented") );
            return wxMUTEX_DEAD_LOCK;

        case EINVAL:
            wxLogDebug(_T("pthread_mutex_[timed]lock(): mutex not initialized"));
            break;

        case ETIMEDOUT:
            return wxMUTEX_TIMEOUT;

        case 0:
            if (m_type == wxMUTEX_DEFAULT)
                m_owningThread = wxThread::GetCurrentId();
            return wxMUTEX_NO_ERROR;

        default:
            wxLogApiError(_T("pthread_mutex_[timed]lock()"), err);
    }

    return wxMUTEX_MISC_ERROR;
}

wxMutexError wxMutexInternal::TryLock()
{
    int err = pthread_mutex_trylock(&m_mutex);
    switch ( err )
    {
        case EBUSY:
            // not an error: mutex is already locked, but we're prepared for
            // this
            return wxMUTEX_BUSY;

        case EINVAL:
            wxLogDebug(_T("pthread_mutex_trylock(): mutex not initialized."));
            break;

        case 0:
            if (m_type == wxMUTEX_DEFAULT)
                m_owningThread = wxThread::GetCurrentId();
            return wxMUTEX_NO_ERROR;

        default:
            wxLogApiError(_T("pthread_mutex_trylock()"), err);
    }

    return wxMUTEX_MISC_ERROR;
}

bool wxClipboard::Flush()
{
#if wxUSE_OLE_CLIPBOARD
    if (m_lastDataObject)
    {
        // don't touch data set by other applications
        HRESULT hr = OleIsCurrentClipboard(m_lastDataObject);
        m_lastDataObject = NULL;
        if (S_OK == hr)
        {
            hr = OleFlushClipboard();
            if ( FAILED(hr) )
            {
                wxLogApiError(wxT("OleFlushClipboard"), hr);

                return false;
            }
            return true;
        }
    }
    return false;
#else // !wxUSE_OLE_CLIPBOARD
    return false;
#endif // wxUSE_OLE_CLIPBOARD/!wxUSE_OLE_CLIPBOARD
}

void wxComboCtrl::OnThemeChange()
{
    // there doesn't seem to be any way to get the text colour using themes
    // API: TMT_TEXTCOLOR doesn't work neither for EDIT nor COMBOBOX
    SetForegroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));

#if wxUSE_UXTHEME
    wxUxThemeEngine * const theme = wxUxThemeEngine::GetIfActive();
    if ( theme )
    {
        // NB: use EDIT, not COMBOBOX (the latter works in XP but not Vista)
        wxUxThemeHandle hTheme(this, L"EDIT");
        COLORREF col;
        HRESULT hr = theme->GetThemeColor
                            (
                                hTheme,
                                EP_EDITTEXT,
                                ETS_NORMAL,
                                TMT_FILLCOLOR,
                                &col
                            );
        if ( SUCCEEDED(hr) )
        {
            SetBackgroundColour(wxRGBToColour(col));

            // skip the call below
            return;
        }

        wxLogApiError(_T("GetThemeColor(EDIT, ETS_NORMAL, TMT_FILLCOLOR)"), hr);
    }
#endif

    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
}

BOINC_Mutex::~BOINC_Mutex()
{
    if ( m_isOk )
    {
        int err = pthread_mutex_destroy( &m_mutex );
        if ( err != 0 )
        {
            wxLogApiError( wxT("pthread_mutex_destroy()"), err );
        }
    }
}

wxConditionInternal::~wxConditionInternal()
{
    if ( m_isOk )
    {
        int err = pthread_cond_destroy(&m_cond);
        if ( err != 0 )
        {
            wxLogApiError(_T("pthread_cond_destroy()"), err);
        }
    }
}

wxMutexInternal::~wxMutexInternal()
{
    if ( m_isOk )
    {
        int err = pthread_mutex_destroy(&m_mutex);
        if ( err != 0 )
        {
            wxLogApiError( wxT("pthread_mutex_destroy()"), err);
        }
    }
}

wxSize wxDatePickerCtrl::DoGetBestSize() const
{
    wxClientDC dc(const_cast<wxDatePickerCtrl *>(this));

    // we can't use FormatDate() here as the CRT doesn't always use the same
    // format as the date picker control
    wxString s;
    for ( int len = 100; ; len *= 2 )
    {
        if ( ::GetDateFormat
               (
                    LOCALE_USER_DEFAULT,    // the control should use the same
                    DATE_SHORTDATE,         // the format used by the control
                    NULL,                   // use current date (we don't care)
                    NULL,                   // no custom format
                    wxStringBuffer(s, len), // output buffer
                    len                     // and its length
               ) )
        {
            // success
            break;
        }

        const DWORD rc = ::GetLastError();
        if ( rc != ERROR_INSUFFICIENT_BUFFER )
        {
            wxLogApiError(wxT("GetDateFormat"), rc);

            // fall back on wxDateTime, what else to do?
            s = wxDateTime::Today().FormatDate();
            break;
        }
    }

    // the best size for the control is bigger than just the string
    // representation of todays date because the control must accommodate any
    // date and while the widths of all digits are usually about the same, the
    // width of the month string varies a lot, so try to account for it
    s += wxT("WW");

    int x, y;
    dc.GetTextExtent(s, &x, &y);

    // account for the drop-down arrow or spin arrows
    x += wxSystemSettings::GetMetric(wxSYS_HSCROLL_ARROW_X);

    // and for the checkbox if we have it
    if ( HasFlag(wxDP_ALLOWNONE) )
        x += 3*GetCharWidth();

    wxSize best(x, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
    CacheBestSize(best);
    return best;
}

wxCondError wxConditionInternal::Broadcast()
{
    int err = pthread_cond_broadcast(&m_cond);
    if ( err != 0 )
    {
        wxLogApiError(_T("pthread_cond_broadcast()"), err);

        return wxCOND_MISC_ERROR;
    }

    return wxCOND_NO_ERROR;
}