Hi Kruno,
Once you have the idea - This thing is so Simple. I just Built a Vi in less than 15 Minutes which had in its Vi Hierarchy about 5 VI's.
What I do is Copy the Picture of VI hierarchy using ALT-PRNT SCRN method. I bring it to Picture Editor Crop all details I dont Want. I then Copy the image to Front Panel of a New VI. I make sure the Front Panel Color of VI Hierarchy I copied is Same as this New VI. The Default Color.
Now I overlap all Sub Vi Icons with Picture Controls. One Picture Control Per Icon which I want to run. The Size of the Picture Control is Same as ICON Size. The Picture Control is Colored Transparent. If you want you can even color the border transparent. I Like with Border. Make Sure the Picture Control is the Front Most Object a
nd the Vi Hierarchy Picture is at Back.
Now I code Some Functionality Using Picture Controls Mouse Property. I can even make functionality to do something when Mouse hovers over respective picture Control.
I have Attached a VI I built for you to See. Just Click RUN and Click on Individual VI Icons. LV6.1
I think this method is elegant just by its simplicity and scalability.
Good Luck!!
Mache
Good Luck!
Mache