For presentation drivers that support more than one form code with the relevant data held in a structure of HCINFO structures, the parameters lStart and cCount identify the starting point in the main structure and the number of HCINFO structures to be stored.

It is usual for this function to be issued twice (initially with a value of 0 in cCount) to return the number of forms available. Storage can be allocated and the function called again with cCount set to the number of forms for which information is required.