can anyone give me idea for QextSerialPort and QserialDevice. i am new in QT programming i have make a GUI for Communicate with Serial Port using QextSerialPort and QserialDevice both but my data is not coming complete some of data is getting lost.

it is in the case of when i comunicate with USB Devices(Vertual Com port) using FTDI Chip, MicroChip AND TI USB com Emulators(/dev/ttyUSB0,/dev/ttyACM0,,,,etc). not in case of COM Port Available in Computer(/dev/ttyS0,/devttyS1....etc)