QGCSettingsWidget 0 0 535 427 Dialog General General Settings Mute all audio output :/images/status/audio-volume-muted.svg:/images/status/audio-volume-muted.svg Qt::Horizontal QDialogButtonBox::Close buttonBox accepted() QGCSettingsWidget accept() 248 254 157 274 buttonBox rejected() QGCSettingsWidget reject() 316 260 286 274