NeroAPI and DVD writing

Does anyone has experience with the NeroAPI.dll ??
I created my own software using the NeroAPI.dll (5.5.9.14) and I have a problem to get information about a DVD drive.

I used the Function “NeroGetCDInfo()” (which is included in the NeroAPI.dll) and can get information about a CD/CD-RW medium in a CD drive.
Does there is a function which I can use to get information about a DVD/DVD-RW like e.g. “NeroGetDVDInfo()” ??

When I use NeroGetCDInfo() to get information about a DVD in a DVD drive, the result is not DVD or DVD-RW.

Maybe anyone has an idea ??

Tomas