If you have VI Scripting active, you can write code to query the size and position of the BD of a VI. The code would look something like this:
This is no complete VI since it leaks the references to diagram and VI.
Here you find a KB about the maximum size of front panel and block diagram in LV.
Norbert
Norbert
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CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.