using GIO driver to create grids

[Andrew.Loughhead at c...]

Just wondering if anyone has a working example of using the 
GIO driver to create new ESRI grids, that they could share 
with me, either using the C++ or C interface. Along the lines 
of Franks tutorial is what I'm hoping for. I have code that 
creates a grid and apparently writes to it, but when looked 
at in Arc/Info, the results are entirely nodata. 

thanks 
andrew.