C / C++ / MFC

void CMyClass::ShowTrayIcon()
{
	if(m_bTrayIconCreated == FALSE)
	{
		if(m_IconList.m_hImageList == NULL)
			LoadSysTrayIcons();
		ZeroMemory(&m_SystemTray, sizeof(m_SystemTray));
		m_SystemTray.cbSize = sizeof(NOTIFYICONDATA);
		m_SystemTray.hWnd   = GetSafeHwnd();
		m_SystemTray.uID    = 1;
		m_SystemTray.hIcon  = m_IconList.ExtractIcon(0);
		m_SystemTray.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
		m_SystemTray.uCallbackMessage = TaskbarCallbackMsg;
		_tcscpy(m_SystemTray.szTip, SZ_APPNAME);

		m_bTrayIconCreated = Shell_NotifyIcon(NIM_ADD, &m_SystemTray);
	}
}

BOOL CMyClass::LoadSysTrayIcons()
{
	CBitmap		cBitmap;
	BITMAP		bmBitmap;
	CSize		cSize;
	int		nNoIcon;
	
	if(!cBitmap.Attach(LoadImage(AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDB_BMP_SYSTRAYICON), IMAGE_BITMAP, 0, 0,
LR_DEFAULTSIZE | LR_CREATEDIBSECTION)) ||
	   !cBitmap.GetBitmap(&bmBitmap))
	{
		return FALSE;
	}

	cSize  = CSize(bmBitmap.bmWidth, bmBitmap.bmHeight);
	nNoIcon = cSize.cx / 16;
	RGBTRIPLE* rgb		= (RGBTRIPLE*)(bmBitmap.bmBits);
	COLORREF   rgbMask	= RGB(255, 255, 255);/*RGB(rgb[0].rgbtRed,
		                      rgb[0].rgbtGreen, rgb[0].rgbtBlue);*/
	
	if(!m_IconList.Create(16, 16, ILC_COLOR24 | ILC_MASK, nNoIcon, 0))
	{
		return FALSE;
	}
	
	if(m_IconList.Add(&cBitmap, rgbMask) == -1)
		return FALSE;

	cBitmap.Detach();

	return TRUE;
}