String passing between functions in vc++ SDI aplication

Hello people all welcome. I hav started my career in windows programming.
I am doing an project in SDI. I have two functions name sendtext(CString str) and
displaytext(CString inr) both in different class.
I have a pointer name pView to send the string str to function "displaytext".
The problem is after some operations i get a text in str and i send that text to display text in the output screen i get the text and wen the second text comes to "displaytext" the former text disappears and the latest string only present. Pleae help me like how can i display both the text in the output window on ClistCtrl class.

Void sendtext(CString str)
{
   // do some operations
................
  pView->displaytext(str);
}

void displaytext(CString inr)
{
  CListCtrl &ctlsde = this->GetListCtrl();
  ctlsde.InsertColumn(1,  _T("First "),   LVCFMT_LEFT,   80);

  int nItem;
	nItem = ctlsde.InsertItem(0,  inr);
}

Tags: Visual Studio, MFC, String, ListView, ListControl