plist.add (Properties::name, string ((*iter)[_columns.text]));
bool val = (*iter)[_columns.gain];
plist.add (Properties::name, string ((*iter)[_columns.text]));
bool val = (*iter)[_columns.gain];
val = (*iter)[_columns.active_state];
plist.add (Properties::active, val);
val = (*iter)[_columns.is_visible];
val = (*iter)[_columns.active_state];
plist.add (Properties::active, val);
val = (*iter)[_columns.is_visible];