How to implement mouse hover/leave message on system tray.

// BmpDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TrayPosDemo.h"
#include "BmpDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CBmpDlg dialog


CBmpDlg::CBmpDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CBmpDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBmpDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void CBmpDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CBmpDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CBmpDlg, CDialog)
	//{{AFX_MSG_MAP(CBmpDlg)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBmpDlg message handlers

BOOL CBmpDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	CRect	rcWorkArea;
	CRect	rcClient;

	SystemParametersInfo(SPI_GETWORKAREA, 0, &rcWorkArea, FALSE);
	GetClientRect(&rcClient);

	SetWindowPos(&wndTopMost, rcWorkArea.right-rcClient.Width()-5, rcWorkArea.bottom-rcClient.Height()-5, 0, 0, SWP_NOSIZE);
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}