Carriage return in mex files

Hi,
I'm trying to add a progress bar that works fine in any console, but doesn't seem to work in MatLab. It's in a mex file, that calls the following to refresh:

mexEvalString("drawnow;");

However, the carriage return '\r' does not seem to work - I need to return the cursor to the front of the line so that the progress bar continually is written over. I'm using mexPrintf, but it just shows up on successive lines beneath each other. Thanks for any help.
.

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