How can I change the gateway and DNS

[Mihan]

I search for something about network setting of QT on internet. I just found QNetworkInterface that it could change ip ,netmask and broadcast but without gateway and the DNS. So does it have other API to change that?

[KillerSmath]

hi @Mihan.

1. Can you provide us a better explanation of what is your issue ?
2. Are you trying to set your system network settings or for another purpose ?

[Mihan]

@KillerSmath Hi
Yes I want to set the system network settings (linux). Is there no interface about set the network setting on Qt because of different API between WINDOWS and Linux?

[KillerSmath]

@Mihan
You could use QProcess to run system command lines from qt

[Mihan]

@KillerSmath Yep I used QProcess("ifconfig ....") to set it. But when the machine restarted, the network settings would be restored to the old settings. I must save the latest settings and call this function again when restart. So ..... do you have any other better suggestions? Thank you.

[aha_1980]

@Mihan Well ... probably this information is stored in a configuration file.

You have to find out which config file is used by your O/S [*] and then probably you can make the changes directly there from your program.

Regards

*) Yeah there are really many possible locations for such a file, depending on the OS

[Mihan]

@aha_1980 Ok，thank you for your suggestions. Have a nice day~XD