MLReady()

int MLReady(MLINK link) tests whether there is data ready to be read from link.

Analogous to the Mathematica function LinkReadyQ.

MLReady() is often called in a loop as a way of polling a MathLink connection.

MLReady() will always return immediately, and will not block.

You need to call MLFlush() before starting to call MLReady().

See Section 2.13.14.