How to make remote desktop program

hi I want How to make remote desktop program in QT ??
For example : teamviewer

Sounds like a very challenging project. Good luck with it.

There are plenty of open source examples out there that might give you some idea how to do parts of this. Some of them are even written using Qt libraries (krdc) but many are not (most vnc viewers). Each client is likely to be operating system specific. Teamviewer also has a server-side component to help with client rendezvous.

Do you have any idea?