hi,
if there are no gui objects (also number boxes), nor subpatches in your abstraction, you may try to use graph-on-parent feature with adjusted screen width and height properties of the graph (e.g. 80x20). Such a box, unlabeled (add a comment on top) but with visible inlets and outlets, is protected from casual clicks -- one needs to use a popup menu to be able to open it.
This is a stupid workaround, likely to break in future Pd versions. In the longer run, it would be nice to have all sorts of user access restriction options (like edit lock, etc).
Krzysztof
CK wrote: ...
Is there a way to prevent abstractions from opening windows showing themselves when clicked on ?