code in programlisting box goes over the right edge

I am not sure what is the right name of this box in english because i am using the german version of LYX. It is the box where you type in program code. I have inserted this box in my document and written stuff into it. In Lyx everything looks fine, but when I convert to pdf the longer lines of

code in programlisting box goes over the right edge

I am not sure what is the right name of this box in english because i am using the german version of LYX. It is the box where you type in program code. I have inserted this box in my document and written stuff into it. In Lyx everything looks fine, but when I convert to pdf the longer lines of

code in programlisting box goes over the right edge

I am not sure what is the right name of this box in english because i am using the german version of LYX. It is the box where you type in program code. I have inserted this box in my document and written stuff into it. In Lyx everything looks fine, but when I convert to pdf the longer lines of