connect(ann_export_format_, SIGNAL(textChanged(const QString&)),
this, SLOT(on_dec_exportFormat_changed(const QString&)));
decoder_layout->addRow(tr("Annotation export format"), ann_export_format_);
connect(ann_export_format_, SIGNAL(textChanged(const QString&)),
this, SLOT(on_dec_exportFormat_changed(const QString&)));
decoder_layout->addRow(tr("Annotation export format"), ann_export_format_);