Grabber channel commands
|
QMedia
Grabber channel commands
|
|
| QM_GetChannelUsage(areaRef; channelRef; channelUsage):error | |||
|
|
areaRef | Longint | Grabber area reference |
|
|
channelRef | Longint | Channel reference |
|
|
channelUsage | Longint | Channel usage |
|
|
error | Longint | Error result |
Returns the channel's usage in the grabber plug-in area. A channel can be used in preview, in recording, and it can play during record or not.
The grabber plug-in area is specified by areaRef.
Parameter channelRef is the reference to the channel. The channel reference must have been previously obtained with a call to QM_NewChannel.
Parameter channelUsage receives the channel's usage in the grabber plug-in area. The channelUsage parameter is the combination (with addition or bitwise "or") of any of the following constants.
| qm_seqGrabRecord | 1 | Channel is used in recording. |
| qm_seqGrabPreview | 2 | Channel is used in preview. |
| qm_seqGrabPlayDuringRecord | 4 | Channel plays during record. |
Related commands
| QM_SetChannelUsage | Changes the channel's usage. |