write struct as raw data to file

[Paul]

Hmm...well this is what I did and sort of got what I wanted; it 
did compile and write data!

auto myStruct = new mystruct[1];
File f = File("myFile.wav", "wb");
f.rawWrite(myStruct);   //this is 44 bytes
f.rawWrite(shortWaveArray);

What I got in the file was this:
-my 44 byte myStruct data + (4 bytes of zero)!
-then, my shortWaveArray data

What's with the 4 bytes of zero?

Thanks