Sound Volume SDK ActiveX ReferenceMethods IsVistaWindows7 Viscom Software SoundVolume ActiveX Control IsVistaWindows7 method Description: Return true if the current OS is windows 10, windows 8, windows 7 and vista. Usage: SoundVolume1.IsVistaWindows7 Parameters: No Parameters Return Type: Bool Example: bResult= SoundVolume1.IsVistaWindows7