GLIB memory allocation

[Jim Parker <hopeye cfl rr com>]

G'Day !

This is probably a really stupid/basic question, but here it goes.

I need to allocate room for a multi-dimensional array.  Normally my 
declaration would be,

        float **array;

And I would allocate it with something like this (for row-major 
storage):

        array = (gfloat**) malloc((rows)*sizeof(gfloat*));
        for (i=0; i<rows; i++)
          array[i] = (gfloat*) malloc((columns)*sizeof(gfloat));

This would allow me to access my array as normal (ie  array[i][j]).  So 
far pretty basic C.

So my question is, what is the equivalent statements using GLIB's 
memory allocation routines ?  Figured it out
for vectors, but a brain fart keeps me from extending the logic to 
multi-dimensional arrays.

My other question is how would you free the same memory ?

BTW I am coding in GTK version 1.2.x, if it makes a difference.

Thanks for your help.

cheers,
Jim Parker