// atlctrls.h内
typedef CToolBarCtrlT<ATL::CWindow>   CToolBarCtrl;
			

// stdafx.h内
#include <atlbase.h>
#include <atlapp.h>
extern CAppModule _Module;
#include <atlwin.h>

#include <atlcrack.h>
#include <atlmisc.h>
#include <atlctrls.h>
#include <atlframe.h>
			

// mainfrm.h内
class CMainFrame : public CFrameWindowImpl<CMainFrame>,
    public CUpdateUI<CMainFrame>, public CMessageFilter, public CIdleHandler
{
public:
    DECLARE_FRAME_WND_CLASS(NULL, IDR_MAINFRAME)

    virtual BOOL PreTranslateMessage(MSG* pMsg){
        return CFrameWindowImpl<CMainFrame>::PreTranslateMessage(pMsg);
    }

    virtual BOOL OnIdle(){
        UIUpdateToolBar();
        return FALSE;
    }

    BEGIN_UPDATE_UI_MAP(CMainFrame)
        // エントリなし
    END_UPDATE_UI_MAP()

    BEGIN_MSG_MAP_EX(CMainFrame)
        MSG_WM_CREATE(OnCreate)
        NOTIFY_CODE_HANDLER_EX(TBN_DROPDOWN, OnToolbarDropdown)
        COMMAND_ID_HANDLER_EX(ID_BUTTON_MSG, OnButtonMsg)
        COMMAND_ID_HANDLER_EX(ID_MENUITEM_HELLOATL, OnMenuHelloATL)
        COMMAND_ID_HANDLER_EX(ID_MENUITEM_HELLOWTL, OnMenuHelloWTL)
        COMMAND_ID_HANDLER_EX(ID_APP_EXIT, OnMenuExit)
        CHAIN_MSG_MAP(CUpdateUI<CMainFrame>)
        CHAIN_MSG_MAP(CFrameWindowImpl<CMainFrame>)
    END_MSG_MAP()

    LRESULT OnCreate(LPCREATESTRUCT lpcs){
        // ツールバーを作成
        CreateSimpleToolBar();
        UIAddToolBar(m_hWndToolBar);

        // ツールバーのスタイル変更
        CToolBarCtrl bar = m_hWndToolBar;
        bar.SetStyle(bar.GetStyle() | TBSTYLE_FLAT);
        bar.SetExtendedStyle(TBSTYLE_EX_DRAWDDARROWS);

        // ツールバー上のボタンのスタイルを変更
        TBBUTTONINFO bi = {sizeof(bi), TBIF_STYLE};
        bar.GetButtonInfo(ID_BUTTON_MSG, &bi);
        bi.fsStyle |= TBSTYLE_DROPDOWN;
        bar.SetButtonInfo(ID_BUTTON_MSG, &bi);

        // メッセージループにメッセージフィルタとアイドルハンドラを追加
        CMessageLoop* pLoop = _Module.GetMessageLoop();
        pLoop->AddMessageFilter(this);
        pLoop->AddIdleHandler(this);

        return 0;
    }

    LRESULT OnToolbarDropdown(LPNMHDR pnmh){
        LPNMTOOLBAR pnmtb = (LPNMTOOLBAR)pnmh;
        if(pnmtb->iItem == ID_BUTTON_MSG){
            CToolBarCtrl bar = pnmtb->hdr.hwndFrom;

            // ドロップダウンメニューを表示する位置を取得
            CRect rcButton;
            bar.GetRect(ID_BUTTON_MSG, rcButton);
            bar.MapWindowPoints(HWND_DESKTOP, rcButton);

            TPMPARAMS tpm = {sizeof(tpm)};
            tpm.rcExclude = rcButton;

            // ドロップダウンメニュー表示
            CMenu menuDropdown;
            menuDropdown.LoadMenu(IDR_MENU_DROPDOWN);
            menuDropdown.GetSubMenu(0).TrackPopupMenuEx(
                TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_VERTICAL,
                rcButton.left, rcButton.bottom, m_hWnd, &tpm);
        }

        return TBDDRET_DEFAULT;
    }

    void OnButtonMsg(UINT uNotifyCode, int nID, HWND hWndCtl){
        MessageBox(_T("Hello World"));
    }

    void OnMenuHelloATL(UINT uNotifyCode, int nID, HWND hWndCtl){
        MessageBox(_T("Hello ATL"));
    }

    void OnMenuHelloWTL(UINT uNotifyCode, int nID, HWND hWndCtl){
        MessageBox(_T("Hello WTL"));
    }

    void OnMenuExit(UINT uNotifyCode, int nID, HWND hWndCtl){
        PostMessage(WM_CLOSE);
    }
};
			

// app.cpp内
#include "stdafx.h"

#include "resource.h"

#include "mainfrm.h"

CAppModule _Module;

int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE, LPTSTR lpCmdLine, int nCmdShow)
{
    HRESULT hRes = ::CoInitialize(NULL);
    ATLASSERT(SUCCEEDED(hRes));

    ::DefWindowProc(NULL, 0, 0, 0L);

    AtlInitCommonControls(ICC_COOL_CLASSES | ICC_WIN95_CLASSES);

    hRes = _Module.Init(NULL, hInstance);
    ATLASSERT(SUCCEEDED(hRes));

    int nRet = 0;
    // BLOCK: アプリケーション実行
    {
        CMessageLoop theLoop;
        _Module.AddMessageLoop(&theLoop);

        CMainFrame wnd;
        wnd.CreateEx();
        wnd.ShowWindow(nCmdShow);
        wnd.UpdateWindow();

        nRet = theLoop.Run();

        _Module.RemoveMessageLoop();
    }

    _Module.Term();
    ::CoUninitialize();

    return nRet;
}