How strange - I've just loggged on to ask the same question but for lists.

i solved mine by using inkey in the click event of my list:-

*---------------------------
local kk

kk = inkey(0.25, "MS")
if kk = 151 && mouse-click
this.dblClick()
else
* do the click stuff here...
endif
*----------------------------

This doesn't strike me as too elegant although it works - you have to be careful to call the dblClick() routine and nothing else otherwise the Enter key won't function identically to a double-click...unless that's what you want of course.

I'd come on board to ask for other solutions. I've tried _DBLCLICK settings to no avail.