[PD] Loading order of pd objects

Robert Gründler doobre at gmail.com
Wed Feb 25 23:09:23 CET 2009

the problem i'm facing is the following:

i'm trying to write an extension to pd which allows people to create custom
gui objects that can communicate with the underlying pd patch.

So far i've a prototype where i use Gtk+ for the gui, and the communication
works fine so far.

But that's where the loading order of objects become important. First i 
need to
create the canvas object in pd, and then i can create additional objects 
add user interface objects inside the gtk canvas.

If i can't rely on a specific loading order in future implementations of 
pd, a workaround
would be that a simple gtk gui widget would first check if there's a 
canvas existing,
and if that's not the case, it needs to create one itself. But i'm not 
sure if i can create pd
objects in a patch programmatically.

I'd also be glad about feedback from the pd community if such an 
extension would be
considered useful in general.



Frank Barknecht wrote:
> Hallo,
> Robert Gr?ndler hat gesagt: // Robert Gr?ndler wrote:
>> For example when i create a patch with 2 objects that are not connected 
>> in any way,
>> in which order will they be created by pd when the patch is loaded ?
> The order you created them, but it's very bad practice to rely on that,
> because it's an implementation detail that may change in future
> versions and it's generally error prone because you cannot see the
> creation order.
> You can test this with an abstraction that prints something with a
> loadbang, like:
> testme.pd: 
>  [loadbang]
>  |
>  [f $1]
>  |
>  [print]
> testme-for-real.pd:
>  [testme 1]
>  [testme 2]
> Then open testme-for-real.pd again.
> Ciao

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