synfigapp::Action::CanvasSpecific *specific_action;
specific_action=dynamic_cast<synfigapp::Action::CanvasSpecific*>(action.get());
if(specific_action)
{
row[model.canvas] = specific_action->get_canvas();
synfigapp::Action::CanvasSpecific *specific_action;
specific_action=dynamic_cast<synfigapp::Action::CanvasSpecific*>(action.get());
if(specific_action)
{
row[model.canvas] = specific_action->get_canvas();