[PD] drag and drop - tkdnd on osx

[oliver]

hi via Pd-list wrote:
> Hi Oliver,
> 
> thanks for these examples. They both work great for me! And I have equiped my playlist with Drag’n’Drop. My structure is like this now (parent) -> (GOP-playlist) -> (GOP-track) so i drop the files into the track. Which works great if i place the GOP at margin 0/0. Now i can have several playlists in my parent and all is fine until the window gets scrolled, then the positions are off and drop is recognized at a wrong place.
> I just want to point to this problem, and have no clue about a solution since your abstractions worked so well but i didn’t really understand them with all the canvas magic.

it's a really tricky mechanism that needs a lot of info-gathering and 
re-calculating. IEMGUT's [receivecanvas] and [canvasposition] objects 
are needed in several "nested"-levels to calculate the right 
drop-coordinates. it took me a lot of time to figure it out to work more 
or less reliably.

so, for the moment, please stick to the convcention to use
margins "0,0" for GOPs and no scrolling in the parent window.

you also want to wait a little for the "official" dnd-plugin release. 
ATM we're doing the final tests to make it work on all platforms.

best

oliver