Q:

Any help on correct syntax in Swift to access a "typedef void PaStream;" from a C file?

I have compiled and imported a dylib C Library called portaudio (PortAudio website) into an Xcode 6.1 Swift project, all the functions / types are accessible except for one which is 

typedef void PaStream;

I am having trouble understanding how to use that in Swift, in C I declare it like: 
PaStream *audioStream = NULL;

Can anybody help on the Swift equivalent as I get a warning saying undeclared Type / unresolved identifier, it looks like Swift can not bridge a typedef void xyz; ?
Many thanks for any help.

A:

The C typedef
typedef void PaStream;

is indeed not imported to Swift because you can't define a variable of type void.
Even in C, you would only define pointer variables of type PaStream *.
Therefore you could add
typedef PaStream *PaStreamPtr;

to the bridging header file and then use it as
var audioStream : PaStreamPtr = nil

