menu.cpp

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C++ 代码 · 共 1,349 行 · 第 1/3 页

CPP
1,349
字号
                mii.hbmpItem = HBMMENU_CALLBACK;

                ok = ::InsertMenuItem(GetHmenu(), pos, TRUE /* by pos */, &mii);
                if ( !ok )
                {
                    wxLogLastError(wxT("InsertMenuItem()"));
                }
                else // InsertMenuItem() ok
                {
                    // we need to remove the extra indent which is reserved for
                    // the checkboxes by default as it looks ugly unless check
                    // boxes are used together with bitmaps and this is not the
                    // case in wx API
                    WinStruct<MENUINFO> mi;

                    // don't call SetMenuInfo() directly, this would prevent
                    // the app from starting up under Windows 95/NT 4
                    typedef BOOL (WINAPI *SetMenuInfo_t)(HMENU, MENUINFO *);

                    wxDynamicLibrary dllUser(_T("user32"));
                    wxDYNLIB_FUNCTION(SetMenuInfo_t, SetMenuInfo, dllUser);
                    if ( pfnSetMenuInfo )
                    {
                        mi.fMask = MIM_STYLE;
                        mi.dwStyle = MNS_CHECKORBMP;
                        if ( !(*pfnSetMenuInfo)(GetHmenu(), &mi) )
                            wxLogLastError(_T("SetMenuInfo(MNS_NOCHECK)"));
                    }

                    // tell the item that it's not really owner-drawn but only
                    // needs to draw its bitmap, the rest is done by Windows
                    pItem->ResetOwnerDrawn();
                }
            }
#endif // MIIM_BITMAP
        }

        if ( !ok )
        {
            // item draws itself, pass pointer to it in data parameter
            flags |= MF_OWNERDRAW;
            pData = (LPCTSTR)pItem;
        }
    }
    else
#endif // wxUSE_OWNER_DRAWN
    {
        // menu is just a normal string (passed in data parameter)
        flags |= MF_STRING;

#ifdef __WXWINCE__
        itemText = wxMenuItem::GetLabelFromText(itemText);
#endif

        pData = (wxChar*)itemText.c_str();
    }

    // item might have been already inserted by InsertMenuItem() above
    if ( !ok )
    {
        if ( !::InsertMenu(GetHmenu(), pos, flags | MF_BYPOSITION, id, pData) )
        {
            wxLogLastError(wxT("InsertMenu[Item]()"));

            return false;
        }
    }


    // if we just appended the title, highlight it
    if ( (int)id == idMenuTitle )
    {
        // visually select the menu title
        SetDefaultMenuItem(GetHmenu(), id);
    }

    // if we're already attached to the menubar, we must update it
    if ( IsAttached() && GetMenuBar()->IsAttached() )
    {
        GetMenuBar()->Refresh();
    }

    return true;
}

void wxMenu::EndRadioGroup()
{
    // we're not inside a radio group any longer
    m_startRadioGroup = -1;
}

wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
{
    wxCHECK_MSG( item, NULL, _T("NULL item in wxMenu::DoAppend") );

    bool check = false;

    if ( item->GetKind() == wxITEM_RADIO )
    {
        int count = GetMenuItemCount();

        if ( m_startRadioGroup == -1 )
        {
            // start a new radio group
            m_startRadioGroup = count;

            // for now it has just one element
            item->SetAsRadioGroupStart();
            item->SetRadioGroupEnd(m_startRadioGroup);

            // ensure that we have a checked item in the radio group
            check = true;
        }
        else // extend the current radio group
        {
            // we need to update its end item
            item->SetRadioGroupStart(m_startRadioGroup);
            wxMenuItemList::compatibility_iterator node = GetMenuItems().Item(m_startRadioGroup);

            if ( node )
            {
                node->GetData()->SetRadioGroupEnd(count);
            }
            else
            {
                wxFAIL_MSG( _T("where is the radio group start item?") );
            }
        }
    }
    else // not a radio item
    {
        EndRadioGroup();
    }

    if ( !wxMenuBase::DoAppend(item) || !DoInsertOrAppend(item) )
    {
        return NULL;
    }

    if ( check )
    {
        // check the item initially
        item->Check(true);
    }

    return item;
}

wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
{
    if (wxMenuBase::DoInsert(pos, item) && DoInsertOrAppend(item, pos))
        return item;
    else
        return NULL;
}

wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
{
    // we need to find the items position in the child list
    size_t pos;
    wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
    for ( pos = 0; node; pos++ )
    {
        if ( node->GetData() == item )
            break;

        node = node->GetNext();
    }

    // DoRemove() (unlike Remove) can only be called for existing item!
    wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );

#if wxUSE_ACCEL
    // remove the corresponding accel from the accel table
    int n = FindAccel(item->GetId());
    if ( n != wxNOT_FOUND )
    {
        delete m_accels[n];

        m_accels.RemoveAt(n);
    }
    //else: this item doesn't have an accel, nothing to do
#endif // wxUSE_ACCEL

    // remove the item from the menu
    if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
    {
        wxLogLastError(wxT("RemoveMenu"));
    }

    if ( IsAttached() && GetMenuBar()->IsAttached() )
    {
        // otherwise, the chane won't be visible
        GetMenuBar()->Refresh();
    }

    // and from internal data structures
    return wxMenuBase::DoRemove(item);
}

// ---------------------------------------------------------------------------
// accelerator helpers
// ---------------------------------------------------------------------------

#if wxUSE_ACCEL

// create the wxAcceleratorEntries for our accels and put them into provided
// array - return the number of accels we have
size_t wxMenu::CopyAccels(wxAcceleratorEntry *accels) const
{
    size_t count = GetAccelCount();
    for ( size_t n = 0; n < count; n++ )
    {
        *accels++ = *m_accels[n];
    }

    return count;
}

#endif // wxUSE_ACCEL

// ---------------------------------------------------------------------------
// set wxMenu title
// ---------------------------------------------------------------------------

void wxMenu::SetTitle(const wxString& label)
{
    bool hasNoTitle = m_title.empty();
    m_title = label;

    HMENU hMenu = GetHmenu();

    if ( hasNoTitle )
    {
        if ( !label.empty() )
        {
            if ( !::InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
                               (unsigned)idMenuTitle, m_title) ||
                 !::InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
            {
                wxLogLastError(wxT("InsertMenu"));
            }
        }
    }
    else
    {
        if ( label.empty() )
        {
            // remove the title and the separator after it
            if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
                 !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
            {
                wxLogLastError(wxT("RemoveMenu"));
            }
        }
        else
        {
            // modify the title
#ifdef __WXWINCE__
            MENUITEMINFO info;
            wxZeroMemory(info);
            info.cbSize = sizeof(info);
            info.fMask = MIIM_TYPE;
            info.fType = MFT_STRING;
            info.cch = m_title.Length();
            info.dwTypeData = (LPTSTR) m_title.c_str();
            if ( !SetMenuItemInfo(hMenu, 0, TRUE, & info) )
            {
                wxLogLastError(wxT("SetMenuItemInfo"));
            }
#else
            if ( !ModifyMenu(hMenu, 0u,
                             MF_BYPOSITION | MF_STRING,
                             (unsigned)idMenuTitle, m_title) )
            {
                wxLogLastError(wxT("ModifyMenu"));
            }
#endif
        }
    }

#ifdef __WIN32__
    // put the title string in bold face
    if ( !m_title.empty() )
    {
        SetDefaultMenuItem(GetHmenu(), (UINT)idMenuTitle);
    }
#endif // Win32
}

// ---------------------------------------------------------------------------
// event processing
// ---------------------------------------------------------------------------

bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
{
    // ignore commands from the menu title
    if ( id != (WXWORD)idMenuTitle )
    {
        // get the checked status of the command: notice that menuState is the
        // old state of the menu, so the test for MF_CHECKED must be inverted
        UINT menuState = ::GetMenuState(GetHmenu(), id, MF_BYCOMMAND);
        SendEvent(id, !(menuState & MF_CHECKED));
    }

    return true;
}

// ---------------------------------------------------------------------------
// other
// ---------------------------------------------------------------------------

wxWindow *wxMenu::GetWindow() const
{
    if ( m_invokingWindow != NULL )
        return m_invokingWindow;
    else if ( GetMenuBar() != NULL)
        return GetMenuBar()->GetFrame();

    return NULL;
}

// ---------------------------------------------------------------------------
// Menu Bar
// ---------------------------------------------------------------------------

void wxMenuBar::Init()
{
    m_eventHandler = this;
    m_hMenu = 0;
#if wxUSE_TOOLBAR && defined(__WXWINCE__)
    m_toolBar = NULL;
#endif
    // Not using a combined wxToolBar/wxMenuBar? then use
    // a commandbar in WinCE .NET just to implement the
    // menubar.
#if defined(WINCE_WITH_COMMANDBAR)
    m_commandBar = NULL;
    m_adornmentsAdded = false;
#endif
}

wxMenuBar::wxMenuBar()
{
    Init();
}

wxMenuBar::wxMenuBar( long WXUNUSED(style) )
{
    Init();
}

wxMenuBar::wxMenuBar(size_t count, wxMenu *menus[], const wxString titles[], long WXUNUSED(style))
{
    Init();

    m_titles.Alloc(count);

    for ( size_t i = 0; i < count; i++ )
    {
        m_menus.Append(menus[i]);
        m_titles.Add(titles[i]);

        menus[i]->Attach(this);
    }
}

wxMenuBar::~wxMenuBar()
{
    // In Windows CE (not .NET), the menubar is always associated
    // with a toolbar, which destroys the menu implicitly.
#if defined(WINCE_WITHOUT_COMMANDBAR) && defined(__POCKETPC__)
    if (GetToolBar())
    {
        wxToolMenuBar* toolMenuBar = wxDynamicCast(GetToolBar(), wxToolMenuBar);
        if (toolMenuBar)
            toolMenuBar->SetMenuBar(NULL);
    }
#else
    // we should free Windows resources only if Windows doesn't do it for us
    // which happens if we're attached to a frame
    if (m_hMenu && !IsAttached())
    {
#if defined(WINCE_WITH_COMMANDBAR)
        ::DestroyWindow((HWND) m_commandBar);
        m_commandBar = (WXHWND) NULL;
#else
        ::DestroyMenu((HMENU)m_hMenu);
#endif
        m_hMenu = (WXHMENU)NULL;
    }
#endif
}

// ---------------------------------------------------------------------------
// wxMenuBar helpers
// ---------------------------------------------------------------------------

void wxMenuBar::Refresh()
{
    wxCHECK_RET( IsAttached(), wxT("can't refresh unattached menubar") );

#if defined(WINCE_WITHOUT_COMMANDBAR)
    if (GetToolBar())
    {
        CommandBar_DrawMenuBar((HWND) GetToolBar()->GetHWND(), 0);
    }
#elif defined(WINCE_WITH_COMMANDBAR)
    if (m_commandBar)
        DrawMenuBar((HWND) m_commandBar);
#else
    DrawMenuBar(GetHwndOf(GetFrame()));
#endif
}

WXHMENU wxMenuBar::Create()
{
    // Note: this totally doesn't work on Smartphone,
    // since you have to use resources.
    // We'll have to find another way to add a menu
    // by changing/adding menu items to an existing menu.
#if defined(WINCE_WITHOUT_COMMANDBAR)
    if ( m_hMenu != 0 )
        return m_hMenu;

    if (!GetToolBar())
        return 0;

    HWND hCommandBar = (HWND) GetToolBar()->GetHWND();
    HMENU hMenu = (HMENU)::SendMessage(hCommandBar, SHCMBM_GETMENU, (WPARAM)0, (LPARAM)0);

	// hMenu may be zero on Windows Mobile 5. So add the menus anyway.
    if (1) // (hMenu)
    {
        TBBUTTON tbButton;
        memset(&tbButton, 0, sizeof(TBBUTTON));
        tbButton.iBitmap = I_IMAGENONE;
        tbButton.fsState = TBSTATE_ENABLED;
        tbButton.fsStyle = TBSTYLE_DROPDOWN | TBSTYLE_NO_DROPDOWN_ARROW | TBSTYLE_AUTOSIZE;

        size_t i;
        for (i = 0; i < GetMenuCount(); i++)
        {
            HMENU hPopupMenu = (HMENU) GetMenu(i)->GetHMenu() ;
            tbButton.dwData = (DWORD)hPopupMenu;
            wxString label = wxStripMenuCodes(GetLabelTop(i));
            tbButton.iString = (int) label.c_str();

            int position = i;

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?