C++ wxFAIL_MSG函数代码示例

void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
{
    wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
}

wxSizerItem* wxGridBagSizer::Prepend( wxWindow *, int, int, int, wxObject*  )
{
    wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
    return NULL;
}

void wxPen::SetStipple(const wxBitmap& WXUNUSED(stipple))
{
    wxFAIL_MSG( "stippled pens not supported" );
}

wxImage wxDIB::ConvertToImage() const
{
    wxCHECK_MSG( IsOk(), wxNullImage,
                    wxT("can't convert invalid DIB to wxImage") );

    // create the wxImage object
    const int w = GetWidth();
    const int h = GetHeight();
    wxImage image(w, h, false /* don't bother clearing memory */);
    if ( !image.IsOk() )
    {
        wxFAIL_MSG( wxT("could not allocate data for image") );
        return wxNullImage;
    }

    const int bpp = GetDepth();

    // Remember if we have any "real" transparency, i.e. either any partially
    // transparent pixels or not all pixels are fully opaque or fully
    // transparent.
    bool hasAlpha = false;
    bool hasOpaque = false;
    bool hasTransparent = false;

    if ( bpp == 32 )
    {
        // 32 bit bitmaps may be either 0RGB or ARGB and we don't know in
        // advance which one do we have so suppose we have alpha of them and
        // get rid of it later if it turns out we didn't.
        image.SetAlpha();
    }

    // this is the same loop as in Create() just above but with copy direction
    // reversed
    const int dstBytesPerLine = w * 3;
    const int srcBytesPerLine = GetLineSize(w, bpp);
    unsigned char *dst = image.GetData() + ((h - 1) * dstBytesPerLine);
    unsigned char *alpha = image.HasAlpha() ? image.GetAlpha() + (h - 1)*w
                                            : NULL;
    const unsigned char *srcLineStart = (unsigned char *)GetData();
    for ( int y = 0; y < h; y++ )
    {
        // copy one DIB line
        const unsigned char *src = srcLineStart;
        for ( int x = 0; x < w; x++ )
        {
            dst[2] = *src++;
            dst[1] = *src++;
            dst[0] = *src++;

            if ( bpp == 32 )
            {
                // wxImage uses non premultiplied alpha so undo
                // premultiplication done in Create() above
                const unsigned char a = *src;
                *alpha++ = a;

                // Check what kind of alpha do we have.
                switch ( a )
                {
                    case 0:
                        hasTransparent = true;
                        break;

                    default:
                        // Anything in between means we have real transparency
                        // and must use alpha channel.
                        hasAlpha = true;
                        break;

                    case 255:
                        hasOpaque = true;
                        break;
                }

                if ( a > 0 )
                {
                    dst[0] = (dst[0] * 255) / a;
                    dst[1] = (dst[1] * 255) / a;
                    dst[2] = (dst[2] * 255) / a;
                }

                src++;
            }

            dst += 3;
        }

        // pass to the previous line in the image
        dst -= 2*dstBytesPerLine;
        if ( alpha )
            alpha -= 2*w;

        // and to the next one in the DIB
        srcLineStart += srcBytesPerLine;
    }

    if ( hasOpaque && hasTransparent )
        hasAlpha = true;

//.........这里部分代码省略.........

wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
                           const wxString& defaultDir,
                           const wxString& defaultFileName,
                           const wxString& wildCard,
                           long style, const wxPoint& pos,
                           const wxSize& sz,
                           const wxString& name)
    : wxGenericFileDialog(parent, message, defaultDir, defaultFileName,
                          wildCard, style, pos, sz, name, true )
{
    if (gtk_check_version(2,4,0))
    {
        wxGenericFileDialog::Create( parent, message, defaultDir,
                                     defaultFileName, wildCard, style, pos );
        return;
    }

    m_needParent = false;

    if (!PreCreation(parent, pos, wxDefaultSize) ||
        !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
                wxDefaultValidator, wxT("filedialog")))
    {
        wxFAIL_MSG( wxT("wxFileDialog creation failed") );
        return;
    }

    GtkFileChooserAction gtk_action;
    GtkWindow* gtk_parent = NULL;
    if (parent)
        gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );

    const gchar* ok_btn_stock;
    if ( style & wxFD_SAVE )
    {
        gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
        ok_btn_stock = GTK_STOCK_SAVE;
    }
    else
    {
        gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
        ok_btn_stock = GTK_STOCK_OPEN;
    }

    m_widget = gtk_file_chooser_dialog_new(
                   wxGTK_CONV(m_message),
                   gtk_parent,
                   gtk_action,
                   GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                   ok_btn_stock, GTK_RESPONSE_ACCEPT,
                   NULL);

    gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);

    if ( style & wxFD_MULTIPLE )
        gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);

    // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
    // destroys the dialog when the user press ESC on the dialog: in that case
    // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
    // errors...
    g_signal_connect (G_OBJECT(m_widget),
                    "delete_event",
                    G_CALLBACK (gtk_widget_hide_on_delete),
                    (gpointer)this);

    // local-only property could be set to false to allow non-local files to be
    // loaded. In that case get/set_uri(s) should be used instead of
    // get/set_filename(s) everywhere and the GtkFileChooserDialog should
    // probably also be created with a backend, e.g "gnome-vfs", "default", ...
    // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
    // as the default - true:
    // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);

    g_signal_connect (m_widget, "response",
        G_CALLBACK (gtk_filedialog_response_callback), this);

    SetWildcard(wildCard);

    // if defaultDir is specified it should contain the directory and
    // defaultFileName should contain the default name of the file, however if
    // directory is not given, defaultFileName contains both
    wxFileName fn;
    if ( defaultDir.empty() )
        fn.Assign(defaultFileName);
    else if ( !defaultFileName.empty() )
        fn.Assign(defaultDir, defaultFileName);

    // set the initial file name and/or directory
    wxString fname = fn.GetFullName();
    if ( fname.empty() )
    {
        wxString dir = fn.GetPath();
        if ( !dir.empty() )
        {
            gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
                                                dir.fn_str());
        }
    }

//.........这里部分代码省略.........

bool wxListBox::Create( wxWindow *parent, wxWindowID id,
                        const wxPoint &pos, const wxSize &size,
                        int n, const wxString choices[],
                        long style, const wxValidator& validator,
                        const wxString &name )
{
    if (!PreCreation( parent, pos, size ) ||
        !CreateBase( parent, id, pos, size, style, validator, name ))
    {
        wxFAIL_MSG( wxT("wxListBox creation failed") );
        return false;
    }

    m_widget = gtk_scrolled_window_new( NULL, NULL );
    g_object_ref(m_widget);
    if (style & wxLB_ALWAYS_SB)
    {
      gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
        GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
    }
    else
    {
      gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
        GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
    }


    GTKScrolledWindowSetBorder(m_widget, style);

    m_treeview = GTK_TREE_VIEW( gtk_tree_view_new( ) );

    //wxListBox doesn't have a header :)
    //NB: If enabled SetFirstItem doesn't work correctly
    gtk_tree_view_set_headers_visible(m_treeview, FALSE);

#if wxUSE_CHECKLISTBOX
    if(m_hasCheckBoxes)
        ((wxCheckListBox*)this)->DoCreateCheckList();
#endif // wxUSE_CHECKLISTBOX

    // Create the data column
    gtk_tree_view_insert_column_with_attributes(m_treeview, -1, "",
                                                gtk_cell_renderer_text_new(),
                                                "text",
                                                WXLISTBOX_DATACOLUMN, NULL);

    // Now create+set the model (GtkListStore) - first argument # of columns
#if wxUSE_CHECKLISTBOX
    if(m_hasCheckBoxes)
        m_liststore = gtk_list_store_new(2, G_TYPE_BOOLEAN,
                                            GTK_TYPE_TREE_ENTRY);
    else
#endif
        m_liststore = gtk_list_store_new(1, GTK_TYPE_TREE_ENTRY);

    gtk_tree_view_set_model(m_treeview, GTK_TREE_MODEL(m_liststore));

    g_object_unref (m_liststore); //free on treeview destruction

    // Disable the pop-up textctrl that enables searching - note that
    // the docs specify that even if this disabled (which we are doing)
    // the user can still have it through the start-interactive-search
    // key binding...either way we want to provide a searchequal callback
    // NB: If this is enabled a doubleclick event (activate) gets sent
    //     on a successful search
    gtk_tree_view_set_search_column(m_treeview, WXLISTBOX_DATACOLUMN);
    gtk_tree_view_set_search_equal_func(m_treeview,
       (GtkTreeViewSearchEqualFunc) gtk_listbox_searchequal_callback,
                                        this,
                                        NULL);

    gtk_tree_view_set_enable_search(m_treeview, FALSE);

    GtkSelectionMode mode;
    // GTK_SELECTION_EXTENDED is a deprecated synonym for GTK_SELECTION_MULTIPLE
    if ( style & (wxLB_MULTIPLE | wxLB_EXTENDED) )
    {
        mode = GTK_SELECTION_MULTIPLE;
    }
    else // no multi-selection flags specified
    {
        m_windowStyle |= wxLB_SINGLE;
        mode = GTK_SELECTION_SINGLE;
    }

    GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
    gtk_tree_selection_set_mode( selection, mode );

    // Handle sortable stuff
    if(HasFlag(wxLB_SORT))
    {
        // Setup sorting in ascending (wx) order
        gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(m_liststore),
                                             WXLISTBOX_DATACOLUMN,
                                             GTK_SORT_ASCENDING);

        // Set the sort callback
        gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(m_liststore),
                                        WXLISTBOX_DATACOLUMN,
                   (GtkTreeIterCompareFunc) gtk_listbox_sort_callback,
//.........这里部分代码省略.........

wxFontEncoding wxGetFontEncFromCharSet(int cs)
{
    wxFontEncoding fontEncoding;

    switch ( cs )
    {
        default:
            wxFAIL_MSG( _T("unexpected Win32 charset") );
            // fall through and assume the system charset

        case DEFAULT_CHARSET:
            fontEncoding = wxFONTENCODING_SYSTEM;
            break;

        case ANSI_CHARSET:
            fontEncoding = wxFONTENCODING_CP1252;
            break;

        case SYMBOL_CHARSET:
            // what can we do here?
            fontEncoding = wxFONTENCODING_MAX;
            break;

#if defined(__WIN32__) && !defined(__WXMICROWIN__)
        case EASTEUROPE_CHARSET:
            fontEncoding = wxFONTENCODING_CP1250;
            break;

        case BALTIC_CHARSET:
            fontEncoding = wxFONTENCODING_CP1257;
            break;

        case RUSSIAN_CHARSET:
            fontEncoding = wxFONTENCODING_CP1251;
            break;

        case ARABIC_CHARSET:
            fontEncoding = wxFONTENCODING_CP1256;
            break;

        case GREEK_CHARSET:
            fontEncoding = wxFONTENCODING_CP1253;
            break;

        case HEBREW_CHARSET:
            fontEncoding = wxFONTENCODING_CP1255;
            break;

        case TURKISH_CHARSET:
            fontEncoding = wxFONTENCODING_CP1254;
            break;

        case THAI_CHARSET:
            fontEncoding = wxFONTENCODING_CP874;
            break;

        case SHIFTJIS_CHARSET:
            fontEncoding = wxFONTENCODING_CP932;
            break;

        case GB2312_CHARSET:
            fontEncoding = wxFONTENCODING_CP936;
            break;

        case HANGUL_CHARSET:
            fontEncoding = wxFONTENCODING_CP949;
            break;

        case CHINESEBIG5_CHARSET:
            fontEncoding = wxFONTENCODING_CP950;
            break;

#endif // Win32

        case OEM_CHARSET:
            fontEncoding = wxFONTENCODING_CP437;
            break;
    }

    return fontEncoding;
}

bool wxCheckBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
{
    DRAWITEMSTRUCT *dis = (DRAWITEMSTRUCT *)item;

    if ( !IsOwnerDrawn() || dis->CtlType != ODT_BUTTON )
        return wxCheckBoxBase::MSWOnDraw(item);

    // calculate the rectangles for the check mark itself and the label
    HDC hdc = dis->hDC;
    RECT& rect = dis->rcItem;
    RECT rectCheck,
         rectLabel;
    rectCheck.top =
    rectLabel.top = rect.top;
    rectCheck.bottom =
    rectLabel.bottom = rect.bottom;
    const int checkSize = GetBestSize().y;
    const int MARGIN = 3;

    const bool isRightAligned = HasFlag(wxALIGN_RIGHT);
    if ( isRightAligned )
    {
        rectCheck.right = rect.right;
        rectCheck.left = rectCheck.right - checkSize;

        rectLabel.right = rectCheck.left - MARGIN;
        rectLabel.left = rect.left;
    }
    else // normal, left-aligned checkbox
    {
        rectCheck.left = rect.left;
        rectCheck.right = rectCheck.left + checkSize;

        rectLabel.left = rectCheck.right + MARGIN;
        rectLabel.right = rect.right;
    }

    // show we draw a focus rect?
    const bool isFocused = m_isPressed || FindFocus() == this;


    // draw the checkbox itself: note that this should really, really be in
    // wxRendererNative but unfortunately we can't add a new virtual function
    // to it without breaking backwards compatibility

    // classic Win32 version -- this can be useful when we move this into
    // wxRendererNative
#if defined(__WXWINCE__) || !wxUSE_UXTHEME
    UINT state = DFCS_BUTTONCHECK;
    if ( !IsEnabled() )
        state |= DFCS_INACTIVE;
    switch ( Get3StateValue() )
    {
        case wxCHK_CHECKED:
            state |= DFCS_CHECKED;
            break;

        case wxCHK_UNDETERMINED:
            state |= DFCS_PUSHED;
            break;

        default:
            wxFAIL_MSG( _T("unexpected Get3StateValue() return value") );
            // fall through

        case wxCHK_UNCHECKED:
            // no extra styles needed
            break;
    }

    if ( wxFindWindowAtPoint(wxGetMousePosition()) == this )
        state |= DFCS_HOT;

    if ( !::DrawFrameControl(hdc, &rectCheck, DFC_BUTTON, state) )
    {
        wxLogLastError(_T("DrawFrameControl(DFC_BUTTON)"));
    }
#else // XP version
    wxUxThemeEngine *themeEngine = wxUxThemeEngine::GetIfActive();
    if ( !themeEngine )
        return false;

    wxUxThemeHandle theme(this, L"BUTTON");
    if ( !theme )
        return false;

    int state;
    switch ( Get3StateValue() )
    {
        case wxCHK_CHECKED:
            state = CBS_CHECKEDNORMAL;
            break;

        case wxCHK_UNDETERMINED:
            state = CBS_MIXEDNORMAL;
            break;

        default:
            wxFAIL_MSG( _T("unexpected Get3StateValue() return value") );
            // fall through
//.........这里部分代码省略.........

bool wxSound::Create(int WXUNUSED(size), const wxByte* WXUNUSED(data))
{
    wxFAIL_MSG( "not implemented" );

    return false;
}

void CTransferSocket::OnClose(int error)
{
	m_pControlSocket->LogMessage(::Debug_Verbose, _T("CTransferSocket::OnClose(%d)"), error);
	m_onCloseCalled = true;

	if (m_transferEndReason != none)
		return;

	if (!m_pBackend)
	{
		if (!InitBackend())
		{
			TransferEnd(transfer_failure);
			return;
		}
	}

	if (m_transferMode == upload)
	{
		if (m_shutdown && m_pTlsSocket)
		{
			if (m_pTlsSocket->Shutdown() != 0)
				TransferEnd(transfer_failure);
			else
				TransferEnd(successful);
		}
		else
			TransferEnd(transfer_failure);
		return;
	}

	if (error)
	{
		m_pControlSocket->LogMessage(::Error, _("Transfer connection interrupted: %s"), CSocket::GetErrorDescription(error).c_str());
		TransferEnd(transfer_failure);
		return;
	}

	char buffer[100];
	int numread = m_pBackend->Peek(&buffer, 100, error);
	if (numread > 0)
	{
#ifndef __WXMSW__
		wxFAIL_MSG(_T("Peek isn't supposed to return data after close notification"));
#endif

		// MSDN says this:
		//   FD_CLOSE being posted after all data is read from a socket.
		//   An application should check for remaining data upon receipt
		//   of FD_CLOSE to avoid any possibility of losing data.
		// First half is actually plain wrong.
		OnReceive();

		return;
	}
	else if (numread < 0 && error != EAGAIN)
	{
		m_pControlSocket->LogMessage(::Error, _("Transfer connection interrupted: %s"), CSocket::GetErrorDescription(error).c_str());
		TransferEnd(transfer_failure);
		return;
	}

	if (m_transferMode == resumetest)
	{
		if (m_transferBufferLen != 1)
		{
			TransferEnd(failed_resumetest);
			return;
		}
	}
	TransferEnd(successful);
}

wxBitmap wxGTKCairoDCImpl::DoGetAsBitmap(const wxRect* /*subrect*/) const
{
    wxFAIL_MSG("DoGetAsBitmap not implemented");
    return wxBitmap();
}

void wxBitmapCheckBox::SetLabel(const wxBitmap *WXUNUSED(bitmap))
{
    // TODO
    wxFAIL_MSG(wxT("wxBitmapCheckBox::SetLabel() not yet implemented"));
}

 virtual int OnRun() { wxFAIL_MSG( wxT("unreachable code") ); return 0; }

void wxBitmapCheckBox::SetValue(bool WXUNUSED(val))
{
    // TODO
    wxFAIL_MSG(wxT("wxBitmapCheckBox::SetValue() not yet implemented"));
}

wxRect wxScrollBar::GetScrollbarRect(wxScrollBar::Element elem,
                                     int thumbPos) const
{
    if ( thumbPos == -1 )
    {
        thumbPos = GetThumbPosition();
    }

    const wxSize sizeArrow = m_renderer->GetScrollbarArrowSize();

    wxSize sizeTotal = GetClientSize();
    wxCoord *start, *width;
    wxCoord length, arrow;
    wxRect rect;
    if ( IsVertical() )
    {
        rect.x = 0;
        rect.width = sizeTotal.x;
        length = sizeTotal.y;
        start = &rect.y;
        width = &rect.height;
        arrow = sizeArrow.y;
    }
    else // horizontal
    {
        rect.y = 0;
        rect.height = sizeTotal.y;
        length = sizeTotal.x;
        start = &rect.x;
        width = &rect.width;
        arrow = sizeArrow.x;
    }

    switch ( elem )
    {
        case wxScrollBar::Element_Arrow_Line_1:
            *start = 0;
            *width = arrow;
            break;

        case wxScrollBar::Element_Arrow_Line_2:
            *start = length - arrow;
            *width = arrow;
            break;

        case wxScrollBar::Element_Arrow_Page_1:
        case wxScrollBar::Element_Arrow_Page_2:
            // we don't have them at all
            break;

        case wxScrollBar::Element_Thumb:
        case wxScrollBar::Element_Bar_1:
        case wxScrollBar::Element_Bar_2:
            // we need to calculate the thumb position - do it
            {
                length -= 2*arrow;
                wxCoord thumbStart, thumbEnd;
                int range = GetRange();
                if ( !range )
                {
                    thumbStart =
                    thumbEnd = 0;
                }
                else
                {
                    GetScrollBarThumbSize(length,
                                          thumbPos,
                                          GetThumbSize(),
                                          range,
                                          &thumbStart,
                                          &thumbEnd);
                }

                if ( elem == wxScrollBar::Element_Thumb )
                {
                    *start = thumbStart;
                    *width = thumbEnd - thumbStart;
                }
                else if ( elem == wxScrollBar::Element_Bar_1 )
                {
                    *start = 0;
                    *width = thumbStart;
                }
                else // elem == wxScrollBar::Element_Bar_2
                {
                    *start = thumbEnd;
                    *width = length - thumbEnd;
                }

                // everything is relative to the start of the shaft so far
                *start += arrow;
            }
            break;

        case wxScrollBar::Element_Max:
        default:
            wxFAIL_MSG( wxT("unknown scrollbar element") );
    }

    return rect;
//.........这里部分代码省略.........