int right, double samples_per_pixel, double pixels_offset);
void create_decoder_form(int index,
int right, double samples_per_pixel, double pixels_offset);
void create_decoder_form(int index,
QWidget *parent, QFormLayout *form);
QComboBox* create_probe_selector(QWidget *parent,
QWidget *parent, QFormLayout *form);
QComboBox* create_probe_selector(QWidget *parent,