}
dc.DrawLine (wxPoint(MINIMUM_COLUMN_WIDTH, y), wxPoint(MINIMUM_COLUMN_WIDTH * 2, y));
+ if (_input_groups.empty()) {
+ auto const bottom = TOP_HEIGHT + _input_channels.size() * ROW_HEIGHT;
+ dc.DrawLine(wxPoint(MINIMUM_COLUMN_WIDTH, bottom), wxPoint(MINIMUM_COLUMN_WIDTH * 2, bottom));
+ }
+
/* Group labels and lines; be careful here as wxDCClipper does not restore the old
* clipping rectangle after it is destroyed
*/