Does anyone know of a method to open/close different collectives from a single main patch?

opening-collectives-from-a-main-control-patch

Same question here. Any additional information in 2019?

You can load files with the [pcontrol] object. I'm not sure about collectives, but you can definitely load max patches dynamically this way, even from within a collective / application.

could you be more specific plz. Cause I have tried pcontrol and doesn't help to load from a folder. Also, the fact that this folder will be included in another computer (with another file reference) makes it risky.

If the maxpat file is included in the application (again, not sure about collectives), it should be included in the search path. All you need to do is send the message: load patchName.maxpat, and it should load the patch. 

If you are loading files that aren't in the search path, you'll need a way to access the complete file path. There are a variety of ways you can get that. A simple solution (simple code-wise) could be to have the user drag and drop a file over a [dropfile] object to get the full path.

Here is a very basic example of that in action:

If the maxpat file is included in the application (again, not sure about collectives), it should be included in the search path. All you need to do is send the message: load patchName.maxpat, and it should load the patch. 

If you are loading files that aren't in the search path, you'll need a way to access the complete file path. There are a variety of ways you can get that. A simple solution (simple code-wise) could be to have the user drag and drop a file over a [dropfile] object to get the full path.

Opening collectives from a main control patch