How in OpenEdge ABL / Progress 4GL do I get the RIGHT-MOUSE-CLICK trigger to perform the default left click to reposition the focus

Question

I'm using OpenEdge ABL / Progress 4GL. I have a browser widget populated with rows. When I left click a row the row is highlighted and that row is now in focus. I want when I right click on a different row for progress to perform a "left click" (to move the focus to the row that was right clicked on) then do the right click.