The IDirectMusicPort::Activate method activates or deactivates the port.
HRESULT Activate(
BOOL fActive
);
If the method succeeds, the return value is S_OK.
Windows NT/2000: Requires Windows 2000.
Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
Header: Declared in dmusicc.h.