Obtaining pre-trigger data from triggered aquisition

[barney99]

I am trying to program an application to capture x samples before a trigger and y samples after a trigger.

I am looking at example programs using the DAQmx functions.

The "Acq-IntClk-AnlgStart.c" example captures a block of data occurring after a trigger event happens.  What is the best method to capture and read x samples prior to the trigger event in addition to the block of data after the trigger event?

Thanks

[Dafrizzy]

This community example using analog triggering but might be helpful to get you going.

https://forums.ni.com/t5/Example-Program-Drafts/DAQmx-Analog-triggering-by-software-under-LabWindows...