Qt detect when computer goes into sleep?

Question

How can i detect when a users computer goes into sleep (laptop lid closes, sleep mode due to inactivity, etc)?

I need to do this to disconnect the users TCP connecti

Answer 1

You need to use the QNetworkConfigurationManager class available in Qt 4.7 and above.

QNetworkConfigurationManager provides access to the network configurations known to the system and enables applications to detect the system capabilities (with regards to network sessions) at runtime.

In particular look at the void QNetworkConfigurationManager::onlineStateChanged(bool isOnline) signal.