connect(ui.useDefaultEncodings, SIGNAL(clicked(bool)), this, SLOT(widgetHasChanged()));
connect(ui.sendEncoding, SIGNAL(currentIndexChanged(int)), this, SLOT(widgetHasChanged()));
connect(ui.recvEncoding, SIGNAL(currentIndexChanged(int)), this, SLOT(widgetHasChanged()));
connect(ui.useDefaultEncodings, SIGNAL(clicked(bool)), this, SLOT(widgetHasChanged()));
connect(ui.sendEncoding, SIGNAL(currentIndexChanged(int)), this, SLOT(widgetHasChanged()));
connect(ui.recvEncoding, SIGNAL(currentIndexChanged(int)), this, SLOT(widgetHasChanged()));