Communicate with serial port device

["Govinda Parida" <govinda parida gmail com>]

Hi
 I am using gtkmm for GUI. My operating system is Obuntu.
In my application i need like this.
I
have to open a window and it will show that swipe the card, I have
magnetic swipe card reader which is connected to serial port after that
it reads data from serial port then new window will be open.So please
help me.
Thanks in advance.