Thanks ansgar for your reply. I know my package is not perfect and needs to be improved.I am currently looking for someone to help me to package lftp-gtk properly with 0 defect and in relationship with the debian policy.
About the code : As you can see this is a beta version and I work hard to develop an application with no bugs.
I am not a professional developer so if you have some idea to improve the code.
Don't hesitate. I will be very grateful. Lftp-gtk