Can you un-register from a Frame Done Event

[DeltaJ]

Hi All,

I am acquiring form a camera using an architecture very similar to the one posted here. I am registering my camera for the Frame Done event and it is aquiring images with no problems.

What I would like to do is stop the acquisition. I have tried to deregister by creating a case where I register for an null reference (similar to how you dynamically unregister for a user or control event) but this threw up an error. I also tried to increase the 'buffer interval' to a huge number - this stopped the acquisition but when I tried to restart it the code hung - perhaps it was waiting for u32 frames to be acquired before acquiring again.

Is there anyway I can do this? Or would I be better off putting my code in a larger case structure where I can close the camera and re-open it later?

Many thanks in advance,

Dave

[Matt.S]

Hi Dave,

When you say stop the acquisition do you mean stop the program from running without error,  or do you want to stop the acquisition and then restart it pragmatically?

[DeltaJ]

Hi Matt,

I'd like to be able to stop and then restart the acquisition programatically. My thought had been to dynamically unregister and then re-register for the frame-done event by using an empty reference. Unfortunately this threw up a camera error when I tried it.

Thanks for your help,

Dave

[Matt.S]

Hi Dave,

Is there any options for triggering with your camera? 

Regards

[DeltaJ]

Hi Matt,

My plan is the final version will run both in 'live mode' and also with the option of an external TTL trigger. However I am focussing on implementing the live mode first.

Regards and thanks,

Dave

[rpursley8 · Accepted solution]

You can actually just use 'Unregister for Events' to unregister it and then implement the same  'Frame Done' Event to start it up again.

[DeltaJ]

Hi Randall,

I'll give that a try - thank you very much,

Regards,

Dave

[DeltaJ]

That worked thank you