Rémi Coquet wrote: > eric wrote: > > > > Thank you for your quick response. Actually, I have tried > > many different settings of Values and KSPROPERTY_STEPPING_LONG > > but there is no any difference. Here is on of the settings I tried, > > the upperest value of volume control is 0x31, but the lowest value > > strangely become -0x2147483648 (signed value 0x80000000). > ------> -1 /+1 0 -> off 1-> Max phase -1-> Max /phase If that was supposed to have added something to the conversation, I have to admit I could not decode it. -- Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc.