LabVIEW Idea Exchange

About LabVIEW Idea Exchange

Have a LabVIEW Idea?

  1. Browse by label or search in the LabVIEW Idea Exchange to see if your idea has previously been submitted. If your idea exists be sure to vote for the idea by giving it kudos to indicate your approval!
  2. If your idea has not been submitted click Post New Idea to submit a product idea to the LabVIEW Idea Exchange. Be sure to submit a separate post for each idea.
  3. Watch as the community gives your idea kudos and adds their input.
  4. As NI R&D considers the idea, they will change the idea status.
  5. Give kudos to other ideas that you would like to see in a future version of LabVIEW!
Showing results for 
Search instead for 
Did you mean: 

Allow plot legend mouse events

Simple request - I want to be able to trigger mouse events on plot legends.


I thought of this idea in wanting to highlight a plot when I mouse-over the plot name, say by increasing plot width, or adding points to the lines.  I would expect such an event to return the plot number.


Perhaps key events would also be useful, but I can't think of others offhand.

Trusted Enthusiast
Trusted Enthusiast

Of course, you can already detect whether the mouse is over the legend and then detect which plot legend it is over using what is already existing (there is a slight limitation when there is a scrollbar in the legend, but that is a bug that NI has refused so far to acknowledge - I have no clue why).

I have a VI somewhere in the BreakPoint forum that does that (since I need that feature).


I also came across the situation to highlight a plot in the graph by increasing the line width. I had implemented this by adding another list box listing the plot names like a plot legend, when I select a lot name in the list box, I programatically increase the width of the plot. I would be nice if this highlighting feature is inbuit in the labview. Say, when mouse is clicked on the plot names of the plot legend, the corresponding plot can highlight (from within graph object).

Trusted Enthusiast
Trusted Enthusiast

The bug I referred to above has now been fixed in LV 2013. It is now possible to get access to the scrollbar position programmatically (check here):