is there any way?

Yes you can use a second screen like a video projector or a screen

just add a (message box) connected to the gemwin box like this one:

border 0,dimen 1024 768

once this is written and saved

before creating You must click on the nex border box

and then crate

and so on as usual

i don't know if you can have more than two GEM windows try it out

good luck

Run PD under two different users and make sure fast user switching is turned on. Preferably no passwords for each user as this will slow things down.

Each PD under each user will happily generate their own independant GEM windows.

To send data between each instance of PD use [sendOSC] through localhost.

Might not be what most people want, but it works for me.

• working on windows -I just "achieved" something like this with some default presentation setup..but...it's quite crap.
  Maybe things did move further from the last post and someone can give me advice how to solve it?

need to make two [gemwin] outputs, one on the projector, the other on the monitor, both showing the same thing(in a same time). They both need to be in "fullscreen" mode.

maybe a hardware video splitter would do the job?

or if you mean laptop screen, then configure your OS/windowing system into clone mode, or something, and set the laptop resolution to the same as the projector (hmm, not sure what to do if that isn't possible, but worth a try?)

Y use this for my video projector : very simple and efficiant