AppBar - How to implement a sliding desktop bar with a simple MFC class and a DLL

// AppBarDemo.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "AppBarDemo.h"
#include "MainFrm.h"
#include "AppBarMngr.h"

/////////////////////////////////////////////////////////////////////////////
// CAppBarDemoApp

BEGIN_MESSAGE_MAP(CAppBarDemoApp, CWinApp)
	//{{AFX_MSG_MAP(CAppBarDemoApp)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAppBarDemoApp construction

CAppBarDemoApp::CAppBarDemoApp()
{
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CAppBarDemoApp object

CAppBarDemoApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CAppBarDemoApp initialization

BOOL CAppBarDemoApp::InitInstance()
{
	CMainFrame* pFrame = new CMainFrame;
	m_pMainWnd = pFrame;

	// creates a simple frame, without caption, icon or menu
	pFrame->Create(NULL, "AppBarDemo", WS_POPUP);
	
	// avoid taskbar button to appear, also removes 3D edge
	pFrame->ModifyStyleEx(WS_EX_APPWINDOW|WS_EX_CLIENTEDGE, WS_EX_TOOLWINDOW);
	// Don't show, AppBar Manager class will do
	pFrame->ShowWindow(SW_HIDE);
	pFrame->UpdateWindow();

	// Create AppBar manager thread
	CAppBarMngr *appbar = (CAppBarMngr *)::AfxBeginThread(RUNTIME_CLASS(CAppBarMngr));

	// Init AppBar Manager, right sided
	int result = appbar->Init(pFrame->m_hWnd, 150, false);
 
	// Check if hooking has been successful
	if (result==APPBARHOOK_SUCCESS)
		return TRUE;
	else if (result==APPBARHOOK_DLLERROR)
		::AfxMessageBox("Error loading AppBarHook.dll");
	// else should be APPBARHOOK_ALREADYHOOKED, close application

	return FALSE;
}

/////////////////////////////////////////////////////////////////////////////
// CAppBarDemoApp message handlers