1995-1996
Spencer Kimball & Peter Mattis
Returns the specified image's active channel.
If there is an active channel, this will return the channel ID, otherwise, -1.
unknown
| Type | Name | Description |
|---|---|---|
| PF_IMAGE | image | The image |
| Type | Name | Description |
|---|---|---|
| PF_CHANNEL | active-channel | The active channel |