I'm currently designing objects for Dia, that can be linked and I'm wondering if its possible to catch events (like cut or delete) to avoid technical problems ?
I explain myself. I have a Box (first object) on which I can add Connector (second object). This second object should not exist whitout being on a Box. But when the user supress a Box its Conectors still exist.
I've seen in the sources that DiaObjects have parent/childrens attributes. Will it solve the problem if I used these instead of my own current lists ?
Another related problem, that I have, is I can't forbid the user to copy or cut the connector and paste it anywhere on the diagram (major problem for me if he does not paste it on a Box...). The "copy" problem : if I return NULL in the copy function of the Connector Dia crashes. The "cut event" one : I haven't find how to catch the event yet.
I've find some trick to delete unwanted copied Connectors (put a flag on them the they suppress themselves). But I still can't find any solution to catch these delete / cut events.
Thanks in advance,
Camille MAURICE
ATIM
Thales Services
Engineering & Process Management
Domaine de Corbeville
91404 ORSAY - FRANCE
PS : Please excuse my awful English
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