Method ScrollToStart

libraries/lib-viewport/Viewport.cpp:542–551

}

void Viewport::ScrollToStart(bool extend)
{
   auto &project = mProject;
   auto &viewInfo = ViewInfo::Get( project );
   viewInfo.selectedRegion.setT0(0, false);
   if (!extend)
      viewInfo.selectedRegion.setT1(0);

   SetHorizontalThumb(0);
}

void Viewport::ScrollToTop()
{