String passing between functions in VC++ SDI application

[VictorN]

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.

Hi! this is the complete code which i hav done untill now

So where exactly do you have a situation "the second text comes to "displaytext" the former text disappears and the latest string only present"?
And what exactly "after some operations" mean?