The problem is that this string constant for virtual port type is
unknown
would have to be exposed by Apple. Without that string provided by
Apple you
can try and guess what it might be.
NSLog() shows all type constants are the strings exactly as their
constant
names, ie:
NSString *QCPortTypeString = @"QCPortTypeString";
Rather than guessing the string (keyspace is infinite ;) I'd
recommend 'stringsing' the framework.
in terminal:
cat /System/Library/Frameworks/Quartz.framework/Frameworks/
QuartzComposer.framework/QuartzComposer | strings | grep QCPortType |
less
You'll find that there are no string constant for Virtual ports. Or,
if there are, they don't follow the "QCPortType_blahblah_" convention
that the others do.
I don't think you can trick the input port creator to create virtual
ports by picking the correct string.
