>I was not very keen on the solution you mention below since the method would be executed mutiple times even on grids that do not have a .GridDoubleClicked method

Sorry. I don't follow.

>My experience with grids has been that they are difficult to debug in certain situtations when every field is firing off a method constantly so this should be avoided if possible.

Every field is firing "what" constantly ? A DoubleClick ? A DoubleClick is one event ...

>Also I have not yet experimented with the builders for implementing grids that make use of my own custom classes. I suspect there may be some problem in that area.

I don't use builders ... all my Grids (several hundred) are all defined using DEFINE CLASS. They all do double-duty in Views, Lookups, and "Multi-Select" Grid picklists.

>Since the amount of labour I am trying to save is fairly small it looks like Nick's ingenious click transparent class will be the quick solution to this problem. I expect I will find more way to use this class as well.

If it works for you, great.