number of items however the if statement used nIHeight (just the
height of 1 item) and not nHeight (the height all the items).

comctl32: toolbar: Copy bitmaps with CopyImage so that it works also for DIBs (based on a patch by Oleg Krylov).

as it is mandatory and doesn't indicate that the arguments will be
passed in as named ones.

if it is not an HRESULT value, instead of getting it from a [retval]
attribute.