Qt serial port programming ctrl commands not working

[Kesav]

Hi,

I am new to Qt serial programming and i would like to write the ctrl commands like 'Ctrl+D' or 'Ctrl+Z' over serial port to the device which is connected in my PC.
I have tried following syntaxes but didnt work.

1. serialport.write("04\r\n");
   2.serialport.write("\x04");

Can anyone help me on this?

Regards
Kesav

[SGaist]

Hi,

What are these command for ?

[Pablo J. Rogina]

@Kesav are you sure the device is receiving the data you sent?