How to click in one tree item and open a new view

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C++

MFC

Hello , I'm working with an SDI :I have two splitter windows :the left splitter is for TreeView and the second is to show views related to selected tree item.
Any help how by clicking in one selected treeitem , a view is shown in the left splitter.

What I have tried:

void CConnecterView::OnSelchanged(NMHDR* pNMHDR, LRESULT* pResult)
{
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;
	*pResult = 0;
	CIntClientDoc* pDoc = GetDocument();
	//CDocument* pDoc = GetDocument();

	// Get a reference to the tree control
	CTreeCtrl &ctlLeagues = this->GetTreeCtrl();
	// Find out what item is selected in the tree
	HTREEITEM nodSelected = ctlLeagues.GetSelectedItem();
	// Get the string of the selected node
	CString strSelected = ctlLeagues.GetItemText(nodSelected);
	// Just in case the selected node as a parent, get that parent
	HTREEITEM nodParentLeague = ctlLeagues.GetParentItem(nodSelected);
	// Find the string of the parent of the selected node, if it has a parent
	CString strParentLeague = ctlLeagues.GetItemText(nodParentLeague);
	// Now you can react depending on the selected node
	if (strSelected == "Connecter")
	{
		//pDoc->CRightView.OnEnChangeEditUserLogin();
	}