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static NavigationItemUIInterface notificationInterface;

NavHandle CreateTreeItem()
{
	// Set up our notification interface so we can receive messages relating to the the navigation item we will insert into the tree
	memset(&gDataUI,0,sizeof(NavigationItemUIInterface));
	notificationInterface.dwSize					= sizeof(NavigationItemUIInterface);
	notificationInterface.NavItemCreateWindow		= NavItemCreateWindow;						// Called when the framework wants a window from us
	notificationInterface.NavItemDrawItem			= NULL;
	notificationInterface.NavItemNotify				= NavItemNotify;							// For receiving general messages
	notificationInterface.NavItemGetHelpContent		= NavItemGetHelpContent;					// For dynamic help content in the help pane of the UI
	notificationInterface.NavItemFreeHelpContent	= NavItemFreeHelpContent;
	notificationInterface.NavItemShowContextHelp	= NavItemShowContextHelp;					// For F1 help
	notificationInterface.NavItemKeyboardNavigate 	= NavItemKeyboardNavigate;					// To handle custom keyboard navigation within our panel. (optional)


	// Get the correct location to insert our new item under. In this case it will be the "Control Panel" node. This has a well known alias that we can use.
 
	NAVSETITEM controlPanelItem;
	if ( !NavGetItem(_T("{ControlPanel}"), &controlPanelItem) )
	{
		return NULL;										// Couldn't find it, so we won't go any further
	}

	NAVSETITEM treeItem;
	memset(&treeItem, 0, treeItem);
	treeItem.size = sizeof(NAVSETITEM);
	treeItem.flags = NI_FLAG_CUSTOMCONTAINER;				// This is a custom container where we control the panel. 
	treeItem.lParam = 0NULL;									// Set any special context data that you want to be sent with messages to the notificationInterface
	treeItem.strLabel = L"Ad Blocker";
	treeItem.strDescription = L"This component adds an HTTP Filter that blocks advertising";
	treeItem.hModule = AfxGetResourceHandle();				// Where to get resources from
	treeItem.nIconId = iconResourceId;						// Some resource id of the icon to display in the navigation tree
	treeItem.EventMask = 0;									// No special events. NI_EVENT_ACTIVATE, NI_EVENT_DEACTIVATE are always sent. See NavInsertItem for more information
	treeItem.pInterface = notificationInterface;			// The interface we are wanting to use to handle events from this item
	treeItem.strAlias = L"{MyCompanyAdBlocker}";			// Adds an alias. Makes it easier to find and compare navigation items later.
	if ( !NavInsertItem(controlPanelItem.hItem, L"MyCompanyAdBlockerPath", &treeItem) ) 	// The path "MyCompanyAdBlockerPath" is an internal name the user never sees but must be unique under a particular root.
	{
		return NULL;
	}
	return treeItem.hItem;

MyPanel *myPanel = nullptr;
 
static HWND NavItemCreateWindow(NAVCREATEITEM* pCs)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());
 
		gpEmailPanel	if ( myPanel == nullptr )
	{	
		myPanel = new MyPanel();
		myPanel->Create(pCs->hParent, CRect(pCs->rcWnd));			// The parent window and required rect for your window is passed in the NAVCREATEITEM structure
	}
	return gpEmailPanel->m_hWndmyPanel->GetHwnd();



}