avoid command line

Question

am doing a project, in which the am loading  cpp program into richtext box, one thing i want to do, when am loading the cpp program , if the program contain any type of comments, that shouldn't read into the richtextbox

comments like
1) //
2) /* asdasd
       asfasf
    */
3)/*asfasfasf*/

so how to resolve this problem

thnks.