A Simple Tabbed MDI for WTL

// MainFrm.h : interface of the CMainFrame class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_MAINFRM_H__3A239281_3797_4150_ACFB_10712D3B5D4D__INCLUDED_)
#define AFX_MAINFRM_H__3A239281_3797_4150_ACFB_10712D3B5D4D__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

class CMainFrame : public CMDIFrameWindowImpl<CMainFrame>, public CUpdateUI<CMainFrame>,
		public CMessageFilter, public CIdleHandler
{
public:
	DECLARE_FRAME_WND_CLASS(NULL, IDR_MAINFRAME)

	CCommandBarCtrl2 m_CmdBar;
	CMDITabImpl<CMainFrame> m_TabbedMDI;

	virtual BOOL PreTranslateMessage(MSG* pMsg)
	{
		if(CMDIFrameWindowImpl<CMainFrame>::PreTranslateMessage(pMsg))
			return TRUE;

		HWND hWnd = MDIGetActive();
		if(hWnd != NULL)
			return (BOOL)::SendMessage(hWnd, WM_FORWARDMSG, 0, (LPARAM)pMsg);

		return FALSE;
	}

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

	BEGIN_MSG_MAP(CMainFrame)
		MESSAGE_HANDLER(WM_CREATE, OnCreate)
		COMMAND_ID_HANDLER(ID_APP_EXIT, OnFileExit)
		COMMAND_ID_HANDLER(ID_FILE_NEW, OnFileNew)
		COMMAND_ID_HANDLER(ID_VIEW_TOOLBAR, OnViewToolBar)
		COMMAND_ID_HANDLER(ID_VIEW_STATUS_BAR, OnViewStatusBar)
		COMMAND_ID_HANDLER(ID_APP_ABOUT, OnAppAbout)
		COMMAND_ID_HANDLER(ID_WINDOW_CASCADE, OnWindowCascade)
		COMMAND_ID_HANDLER(ID_WINDOW_TILE_HORZ, OnWindowTile)
		COMMAND_ID_HANDLER(ID_WINDOW_ARRANGE, OnWindowArrangeIcons)
		CHAIN_MSG_MAP(CUpdateUI<CMainFrame>)
		CHAIN_MSG_MAP(CMDIFrameWindowImpl<CMainFrame>)
	END_MSG_MAP()

	BEGIN_UPDATE_UI_MAP(CMainFrame)
		UPDATE_ELEMENT(ID_VIEW_TOOLBAR, UPDUI_MENUPOPUP)
		UPDATE_ELEMENT(ID_VIEW_STATUS_BAR, UPDUI_MENUPOPUP)
	END_UPDATE_UI_MAP()

	LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
	{
		// create command bar window
		HWND hWndCmdBar = m_CmdBar.Create(m_hWnd, rcDefault, NULL, ATL_SIMPLE_CMDBAR_PANE_STYLE);
		// attach menu
		m_CmdBar.AttachMenu(GetMenu());
		// load command bar images
		m_CmdBar.LoadImages(IDR_MAINFRAME);
		// remove old menu
		SetMenu(NULL);
		
		HWND hWndToolBar = CreateSimpleToolBarCtrl(m_hWnd, IDR_MAINFRAME, FALSE, ATL_SIMPLE_TOOLBAR_PANE_STYLE);
		
		CreateSimpleReBar(ATL_SIMPLE_REBAR_NOBORDER_STYLE);
		AddSimpleReBarBand(hWndCmdBar);
		AddSimpleReBarBand(hWndToolBar, NULL, TRUE);
		CreateSimpleStatusBar();
		
		CreateMDIClient();
		m_CmdBar.SetMDIClient(m_hWndMDIClient);
		m_TabbedMDI.Attach(this);
		
		UIAddToolBar(hWndToolBar);
		UISetCheck(ID_VIEW_TOOLBAR, 1);
		UISetCheck(ID_VIEW_STATUS_BAR, 1);
		
		// register object for message filtering and idle updates
		CMessageLoop* pLoop = _Module.GetMessageLoop();
		ATLASSERT(pLoop != NULL);
		pLoop->AddMessageFilter(this);
		pLoop->AddIdleHandler(this);
		
		return 0;
	}
	
	void UpdateLayout(BOOL bResizeBars = TRUE)
	{
		RECT rect;
		GetClientRect(&rect);
		
		// position bars and offset their dimensions
		UpdateBarsPosition(rect, bResizeBars);
		
		m_TabbedMDI.UpdateTabLayout(m_hWndClient, rect);
	}

	LRESULT OnFileExit(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		PostMessage(WM_CLOSE);
		return 0;
	}

	LRESULT OnFileNew(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		CChildFrame* pChild = new CChildFrame;
		pChild->CreateEx(m_hWndClient);

		// TODO: add code to initialize document

		return 0;
	}

	LRESULT OnViewToolBar(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		static BOOL bVisible = TRUE;	// initially visible
		bVisible = !bVisible;
		CReBarCtrl rebar = m_hWndToolBar;
		int nBandIndex = rebar.IdToIndex(ATL_IDW_BAND_FIRST + 1);	// toolbar is 2nd added band
		rebar.ShowBand(nBandIndex, bVisible);
		UISetCheck(ID_VIEW_TOOLBAR, bVisible);
		UpdateLayout();
		return 0;
	}

	LRESULT OnViewStatusBar(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		BOOL bVisible = !::IsWindowVisible(m_hWndStatusBar);
		::ShowWindow(m_hWndStatusBar, bVisible ? SW_SHOWNOACTIVATE : SW_HIDE);
		UISetCheck(ID_VIEW_STATUS_BAR, bVisible);
		UpdateLayout();
		return 0;
	}

	LRESULT OnAppAbout(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		CAboutDlg dlg;
		dlg.DoModal();
		return 0;
	}

	LRESULT OnWindowCascade(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		MDICascade();
		return 0;
	}

	LRESULT OnWindowTile(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		MDITile();
		return 0;
	}

	LRESULT OnWindowArrangeIcons(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		MDIIconArrange();
		return 0;
	}
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_MAINFRM_H__3A239281_3797_4150_ACFB_10712D3B5D4D__INCLUDED_)