Re: [Gimp-user] how / when to use gimp-image-delete

[Gary Aitken <ah dreamchaser org>]

On 09/19/12 04:19, paynekj wrote:
> According to the procedure browser,
> the third parameter to pass to the plug-in-unsharp-mask should be the drawable id,
> but you are passing the image id.
> It's only working in your first stage because, by luck,
> the image id and the drawable id have the same value.
>
> You need to get a drawable id - usually by calling gimp-image-get-active-layer

Thanks; (also for the pointer on variable number of args)

When I do gimp-image-get-active-layer, I get something, not a number, back;
and that something is not directly usable in a call to plug-in-unsharp-mask.
After much hair tearing, I discovered you have to take the car of it.

What's the best way to determine / print out what a thing is?
  This is where the old form, "print" seems to be more useful than "display"
  as it seems to print out whatever the arg is; it doesn't have to be 
  converted to string, which is tough if you don't know what it is to begin with.
  Is there a "more correct" way?

Thanks,

Gary