tbar95.cpp

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                    button.fsState |= TBSTATE_ENABLED;
                if ( tool->IsToggled() )
                    button.fsState |= TBSTATE_CHECKED;

                switch ( tool->GetKind() )
                {
                    case wxITEM_RADIO:
                        button.fsStyle = TBSTYLE_CHECKGROUP;

                        if ( !lastWasRadio )
                        {
                            // the first item in the radio group is checked by
                            // default to be consistent with wxGTK and the menu
                            // radio items
                            button.fsState |= TBSTATE_CHECKED;

                            if (tool->Toggle(true))
                            {
                                DoToggleTool(tool, true);
                            }
                        }
                        else if (tool->IsToggled())
                        {
                            wxToolBarToolsList::compatibility_iterator nodePrev = node->GetPrevious();
                            int prevIndex = i - 1;
                            while ( nodePrev )
                            {
                                TBBUTTON& prevButton = buttons[prevIndex];
                                wxToolBarToolBase *tool = nodePrev->GetData();
                                if ( !tool->IsButton() || tool->GetKind() != wxITEM_RADIO )
                                    break;

                                if ( tool->Toggle(false) )
                                {
                                    DoToggleTool(tool, false);
                                }
                                prevButton.fsState = TBSTATE_ENABLED;
                                nodePrev = nodePrev->GetPrevious();
                                prevIndex--;
                            }
                        }

                        isRadio = true;
                        break;

                    case wxITEM_CHECK:
                        button.fsStyle = TBSTYLE_CHECK;
                        break;

                    default:
                        wxFAIL_MSG( _T("unexpected toolbar button kind") );
                        // fall through

                    case wxITEM_NORMAL:
                        button.fsStyle = TBSTYLE_BUTTON;
                }

                bitmapId++;
                break;
        }

        lastWasRadio = isRadio;

        i++;
    }

    if ( !::SendMessage(GetHwnd(), TB_ADDBUTTONS, (WPARAM)i, (LPARAM)buttons) )
    {
        wxLogLastError(wxT("TB_ADDBUTTONS"));
    }

    delete [] buttons;

    // Deal with the controls finally
    // ------------------------------

    // adjust the controls size to fit nicely in the toolbar
    int y = 0;
    size_t index = 0;
    for ( node = m_tools.GetFirst(); node; node = node->GetNext(), index++ )
    {
        wxToolBarToolBase *tool = node->GetData();

        // we calculate the running y coord for vertical toolbars so we need to
        // get the items size for all items but for the horizontal ones we
        // don't need to deal with the non controls
        bool isControl = tool->IsControl();
        if ( !isControl && !isVertical )
            continue;

        // note that we use TB_GETITEMRECT and not TB_GETRECT because the
        // latter only appeared in v4.70 of comctl32.dll
        RECT r;
        if ( !::SendMessage(GetHwnd(), TB_GETITEMRECT,
                            index, (LPARAM)(LPRECT)&r) )
        {
            wxLogLastError(wxT("TB_GETITEMRECT"));
        }

        if ( !isControl )
        {
            // can only be control if isVertical
            y += r.bottom - r.top;

            continue;
        }

        wxControl *control = tool->GetControl();

        wxSize size = control->GetSize();

        // the position of the leftmost controls corner
        int left = wxDefaultCoord;

        // TB_SETBUTTONINFO message is only supported by comctl32.dll 4.71+
#ifdef TB_SETBUTTONINFO
        // available in headers, now check whether it is available now
        // (during run-time)
        if ( wxApp::GetComCtl32Version() >= 471 )
        {
            // set the (underlying) separators width to be that of the
            // control
            TBBUTTONINFO tbbi;
            tbbi.cbSize = sizeof(tbbi);
            tbbi.dwMask = TBIF_SIZE;
            tbbi.cx = (WORD)size.x;
            if ( !::SendMessage(GetHwnd(), TB_SETBUTTONINFO,
                                tool->GetId(), (LPARAM)&tbbi) )
            {
                // the id is probably invalid?
                wxLogLastError(wxT("TB_SETBUTTONINFO"));
            }
        }
        else
#endif // comctl32.dll 4.71
        // TB_SETBUTTONINFO unavailable
        {
            // try adding several separators to fit the controls width
            int widthSep = r.right - r.left;
            left = r.left;

            TBBUTTON tbb;
            wxZeroMemory(tbb);
            tbb.idCommand = 0;
            tbb.fsState = TBSTATE_ENABLED;
            tbb.fsStyle = TBSTYLE_SEP;

            size_t nSeparators = size.x / widthSep;
            for ( size_t nSep = 0; nSep < nSeparators; nSep++ )
            {
                if ( !::SendMessage(GetHwnd(), TB_INSERTBUTTON,
                                    index, (LPARAM)&tbb) )
                {
                    wxLogLastError(wxT("TB_INSERTBUTTON"));
                }

                index++;
            }

            // remember the number of separators we used - we'd have to
            // delete all of them later
            ((wxToolBarTool *)tool)->SetSeparatorsCount(nSeparators);

            // adjust the controls width to exactly cover the separators
            control->SetSize((nSeparators + 1)*widthSep, wxDefaultCoord);
        }

        // position the control itself correctly vertically
        int height = r.bottom - r.top;
        int diff = height - size.y;
        if ( diff < 0 )
        {
            // the control is too high, resize to fit
            control->SetSize(wxDefaultCoord, height - 2);

            diff = 2;
        }

        int top;
        if ( isVertical )
        {
            left = 0;
            top = y;

            y += height + 2*GetMargins().y;
        }
        else // horizontal toolbar
        {
            if ( left == wxDefaultCoord )
                left = r.left;

            top = r.top;
        }

        control->Move(left, top + (diff + 1) / 2);
    }

    // the max index is the "real" number of buttons - i.e. counting even the
    // separators which we added just for aligning the controls
    m_nButtons = index;

    if ( !isVertical )
    {
        if ( m_maxRows == 0 )
        {
            // if not set yet, only one row
            SetRows(1);
        }
    }
    else if ( m_nButtons > 0 ) // vertical non empty toolbar
    {
        if ( m_maxRows == 0 )
        {
            // if not set yet, have one column
            SetRows(m_nButtons);
        }
    }

    InvalidateBestSize();
    UpdateSize();

    return true;
}

// ----------------------------------------------------------------------------
// message handlers
// ----------------------------------------------------------------------------

bool wxToolBar::MSWCommand(WXUINT WXUNUSED(cmd), WXWORD id)
{
    wxToolBarToolBase *tool = FindById((int)id);
    if ( !tool )
        return false;

    bool toggled = false; // just to suppress warnings

    if ( tool->CanBeToggled() )
    {
        LRESULT state = ::SendMessage(GetHwnd(), TB_GETSTATE, id, 0);
        toggled = (state & TBSTATE_CHECKED) != 0;

        // ignore the event when a radio button is released, as this doesn't
        // seem to happen at all, and is handled otherwise
        if ( tool->GetKind() == wxITEM_RADIO && !toggled )
            return true;

        tool->Toggle(toggled);
        UnToggleRadioGroup(tool);
    }

    // OnLeftClick() can veto the button state change - for buttons which
    // may be toggled only, of couse
    if ( !OnLeftClick((int)id, toggled) && tool->CanBeToggled() )
    {
        // revert back
        tool->Toggle(!toggled);

        ::SendMessage(GetHwnd(), TB_CHECKBUTTON, id, MAKELONG(!toggled, 0));
    }

    return true;
}

bool wxToolBar::MSWOnNotify(int WXUNUSED(idCtrl),
                            WXLPARAM lParam,
                            WXLPARAM *WXUNUSED(result))
{
#if wxUSE_TOOLTIPS
    // First check if this applies to us
    NMHDR *hdr = (NMHDR *)lParam;

    // the tooltips control created by the toolbar is sometimes Unicode, even
    // in an ANSI application - this seems to be a bug in comctl32.dll v5
    UINT code = hdr->code;
    if ( (code != (UINT) TTN_NEEDTEXTA) && (code != (UINT) TTN_NEEDTEXTW) )
        return false;

    HWND toolTipWnd = (HWND)::SendMessage((HWND)GetHWND(), TB_GETTOOLTIPS, 0, 0);
    if ( toolTipWnd != hdr->hwndFrom )
        return false;

    LPTOOLTIPTEXT ttText = (LPTOOLTIPTEXT)lParam;
    int id = (int)ttText->hdr.idFrom;

    wxToolBarToolBase *tool = FindById(id);
    if ( !tool )
        return false;

    return HandleTooltipNotify(code, lParam, tool->GetShortHelp());
#else
    wxUnusedVar(lParam);

    return false;
#endif
}

// ----------------------------------------------------------------------------
// toolbar geometry
// ----------------------------------------------------------------------------

void wxToolBar::SetToolBitmapSize(const wxSize& size)
{
    wxToolBarBase::SetToolBitmapSize(size);

    ::SendMessage(GetHwnd(), TB_SETBITMAPSIZE, 0, MAKELONG(size.x, size.y));
}

void wxToolBar::SetRows(int nRows)
{
    if ( nRows == m_maxRows )
    {
        // avoid resizing the frame uselessly
        return;
    }

    // TRUE in wParam means to create at least as many rows, FALSE -
    // at most as many
    RECT rect;
    ::SendMessage(GetHwnd(), TB_SETROWS,
                  MAKEWPARAM(nRows, !(GetWindowStyle() & wxTB_VERTICAL)),
                  (LPARAM) &rect);

    m_maxRows = nRows;

    UpdateSize();
}

// The button size is bigger than the bitmap size
wxSize wxToolBar::GetToolSize() const
{
    // TB_GETBUTTONSIZE is supported from version 4.70
#if defined(_WIN32_IE) && (_WIN32_IE >= 0x300 ) \
    && !( defined(__GNUWIN32__) && !wxCHECK_W32API_VERSION( 1, 0 ) ) \
    && !defined (__DIGITALMARS__)
    if ( wxApp::GetComCtl32Version() >= 470 )
    {
        DWORD dw = ::SendMessage(GetHwnd(), TB_GETBUTTONSIZE, 0, 0);

        return wxSize(LOWORD(dw), HIWORD(dw));
    }
    else
#endif // comctl32.dll 4.70+
    {
        // defaults
        return wxSize(m_defaultWidth + 8, m_defaultHeight + 7);
    }
}

static
wxToolBarToolBase *GetItemSkippingDummySpacers(const wxToolBarToolsList& tools,
                                               size_t index )
{
    wxToolBarToolsList::compatibility_iterator current = tools.GetFirst();

    for ( ; current ; current = current->GetNext() )
    {
        if ( index == 0 )
            return current->GetData();

        wxToolBarTool *tool = (wxToolBarTool *)current->GetData();
        size_t separators = tool->GetSeparatorsCount();

        // if it is a normal button, sepcount == 0, so skip 1 item (the button)
        // otherwise, skip as many items as the separator count, plus the
        // control itself
        index -= separators ? separators + 1 : 1;
    }

    return 0;
}

wxToolBarToolBase *wxToolBar::FindToolForPosition(wxCoord x, wxCoord y) const
{
    POINT pt;
    pt.x = x;
    pt.y = y;
    int index = (int)::SendMessage(GetHwnd(), TB_HITTEST, 0, (LPARAM)&pt);
    // MBN: when the point ( x, y ) is close to the toolbar border
    //      TB_HITTEST returns m_nButtons ( not -1 )
    if ( index < 0 || (size_t)index >= m_nButtons )
    {
        // it's a separator or there is no tool at all there
        return (wxToolBarToolBase *)NULL;
    }

    // when TB_SETBUTTONINFO is available (both during compile- and run-time),
    // we don't use the dummy separators hack
#ifdef TB_SETBUTTONINFO
    if ( wxApp::GetComCtl32Version() >= 471 )
    {
        return m_tools.Item((size_t)index)->GetData();
    }
    else
#endif // TB_SETBUTTONINFO
    {
        return GetItemSkippingDummySpacers( m_tools, (size_t) index );
    }
}

void wxToolBar::UpdateSize()
{
    wxPoint pos = GetPosition();
    ::SendMessage(GetHwnd(), TB_AUTOSIZE, 0, 0);
    if (pos != GetPosition())
        Move(pos);

    // In case Realize is called after the initial display (IOW the programmer
    // may have rebuilt the toolbar) give the frame the option of resizing the
    // toolbar to full width again, but only if the parent is a frame and the
    // toolbar is managed by the frame.  Otherwise assume that some other
    // layout mechanism is controlling the toolbar size and leave it alone.
    wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
    if ( frame && frame->GetToolBar() == this )
    {
        frame->SendSizeEvent();
    }
}

// ----------------------------------------------------------------------------
// toolbar styles
// ---------------------------------------------------------------------------

void wxToolBar::SetWindowStyleFlag(long style)
{
    // the style bits whose changes force us to recreate the toolbar
    static const long MASK_NEEDS_RECREATE = wxTB_TEXT | wxTB_NOICONS;