Re: Object copy.

[Hans Breuer <hans breuer org>]

At 26.08.2011 23:11, Paul Chavent wrote:
> Hi.
>
> I'm currently coding in c a new object.
>
> I put a trace in my create handler, copy handler and destroy handler.
>
> When i hit CTRL+C on my object there are three instance that are created.
Isn't the first one already there? So after ctrl+c there are three objects 
exisiting.

> When i close the file, two of them seem to be never destroyed.
Why never? They are just not immediately destroyed to allow later paste.

> If i reopen a new file, when i hit CTRL+C, the two intermediate
> instances are immediately destroyed.
This would also work by just hitting ctrl+c again.

> My two questions are :
>
> (1) is is a memory management that try to make some pool ?
No. There are just two independent copies. One is referenced for the gtk 
clipboard; i gets used when you paste into another application. The other 
one is used for the Dia internal copy and paste list. See 
edit_copy_callback in app/commands.c for both uses.

> (2) is there any way to know when the new object is really created
> (pasted) ?
Wouldn't just paste answer that question for you? Yes it creates another 
copy which is than referenced by the diagram.

> Thanks for your help.
What is the problem you want to solve?

-------- Hans "at" Breuer "dot" Org -----------
Tell me what you need, and I'll tell you how to
get along without it.                -- Dilbert