Gui showing data read from a serial port in "realtime"

[bmn]

Hello.

I am trying to develop a program that shows a stream of function values in a chart. I recieve the values from a serial port. I set up the serial port using the windows api without any probs, but I fail to make it in a way that the gui can recieve the data. Afaik, my problem would be solved by having the comport stuff running in a seperate thread which signals the gui when new data is recieved. I was looking for somekind of code example having a qt gui and a comport communication implemented in different threads but i didnt find anything. Isnt this a very fundamental practice (show data from a stream in a guy)?