newbe question about signals / slots

[marcel]

In the Qt app, the callback will be a static function. Given this, you cannot emit a signal from this function when it is called ( it is static, non-QObject ), but you can call a function from the interface ( you will have to make possible the access to the main window or another widget from this callback ). Another solution would be QApplication:: postEvent to post an event that when received by the app will answer the phone or whatever....

Regards