Hi.
Indeed, there is no built in event to catch a double click, but you can use any of the "single click" events to build yourself your own double-click detector, as shown in the attached VI. What I do there is set the value of a shift register to 1 when there is a mouse down? event and the shift register had a value of 0 (first click). If there is another mouse down? event before the timeout (which you can set to whatever you want), I consider that a double click, and execute whatever code you want for a double click. If the timeout passes, the user didn't click twice on the graph fast enough to be considered a double click, so the shift register is set back to 0.
