With a combo box, I can set the index of item like this:

 PtSetResource( ABW_blablablaCombo, Pt_ARG_CBOX_SEL_ITEM, index, 0 );

Works like a charm.

But cannot get the selected index back ?!

  long *pn;
  PtGetResource( ABW_blablablaCombo, Pt_ARG_CBOX_SEL_ITEM, &pn, 0 );

This returns a pointer to some big value, which is not the index. No error.

Sorry for a stupid newbie question. 
If someone can point me to a better documentation or sample code for widgets, will be very grateful.

Perplexed...
- S.