CAppBar, a WTL implementation of AppBar

// MainDlg.h : interface of the CMainDlg class
//
/////////////////////////////////////////////////////////////////////////////

#pragma once

#include "appbar.h"
#include "resource.h"
#include "aboutdlg.h"

class CMainDlg : public CDialogImpl<CMainDlg>, public CUpdateUI<CMainDlg>,
		public CMessageFilter, public CIdleHandler,public CAppBar<CMainDlg>
{
public:
	enum { IDD = IDD_MAINDLG };

	virtual BOOL PreTranslateMessage(MSG* pMsg)
	{
		return CWindow::IsDialogMessage(pMsg);
	}

	virtual BOOL OnIdle()
	{
		return FALSE;
	}

	BEGIN_UPDATE_UI_MAP(CMainDlg)
	END_UPDATE_UI_MAP()

	BEGIN_MSG_MAP(CMainDlg)
		COMMAND_HANDLER(IDC_CHECK_KEEPSIZE, BN_CLICKED, OnClickedKeepsize)
		CHAIN_MSG_MAP(CAppBar<CMainDlg>)
		MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
		COMMAND_ID_HANDLER(ID_APP_ABOUT, OnAppAbout)
		COMMAND_ID_HANDLER(IDC_DOCK_LEFT, OnLeft)
		COMMAND_ID_HANDLER(IDC_DOCK_RIGHT, OnRight)
		COMMAND_ID_HANDLER(IDC_DOCK_TOP, OnTop)
		COMMAND_ID_HANDLER(IDC_DOCK_BOTTOM, OnBottom)
		COMMAND_ID_HANDLER(IDCANCEL, OnCancel)
		COMMAND_HANDLER(IDC_BTN_UNDOCK, BN_CLICKED, OnClickedUndock)
		COMMAND_HANDLER(IDC_CHECK_AUTOHIDE, BN_CLICKED, OnClickedAutohide)
	END_MSG_MAP()

	LRESULT OnInitDialog(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
	{
		// center the dialog on the screen
		CenterWindow();

		// set icons
		HICON hIcon = (HICON)::LoadImage(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDR_MAINFRAME), 
			IMAGE_ICON, ::GetSystemMetrics(SM_CXICON), ::GetSystemMetrics(SM_CYICON), LR_DEFAULTCOLOR);
		SetIcon(hIcon, TRUE);
		HICON hIconSmall = (HICON)::LoadImage(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDR_MAINFRAME), 
			IMAGE_ICON, ::GetSystemMetrics(SM_CXSMICON), ::GetSystemMetrics(SM_CYSMICON), LR_DEFAULTCOLOR);
		SetIcon(hIconSmall, FALSE);

		// register object for message filtering and idle updates
		CMessageLoop* pLoop = _Module.GetMessageLoop();
		ATLASSERT(pLoop != NULL);
		pLoop->AddMessageFilter(this);
		pLoop->AddIdleHandler(this);

		UIAddChildWindowContainer(m_hWnd);
		
		InitAppBar(APPBAR_DOCKING_ALL, false);

		return TRUE;
	}

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

		return 0;
	}

	LRESULT OnLeft(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		DockAppBar(APPBAR_DOCKING_LEFT);
		return 0;
	}

	LRESULT OnRight(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		DockAppBar(APPBAR_DOCKING_RIGHT);
		return 0;
	}

	LRESULT OnTop(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		DockAppBar(APPBAR_DOCKING_TOP);
		return 0;
	}

	LRESULT OnBottom(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		DockAppBar(APPBAR_DOCKING_BOTTOM);
		return 0;
	}

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

	void CloseDialog(int nVal)
	{
		DestroyWindow();
		::PostQuitMessage(nVal);
	}


	LRESULT OnClickedUndock(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		DockAppBar(APPBAR_DOCKING_NONE);
		return 0;
	}
	LRESULT OnClickedAutohide(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		int nChecked = IsDlgButtonChecked(IDC_CHECK_AUTOHIDE);
		SetAutoHide(nChecked==BST_CHECKED);

		return 0;
	}
	LRESULT OnClickedKeepsize(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
	{
		int nChecked = IsDlgButtonChecked(IDC_CHECK_KEEPSIZE);
		SetKeepSize(nChecked==BST_CHECKED);

		return 0;
	}

};