Acquisition of images with 3 USB cameras causing too many uses of the memory/cpu

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    It all works very well as far as I KNOW  *.
  
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    It all works very well as far as I KNOW  *.
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  Int32 CVICALLBACK EveryNCallback(TaskHandle taskHandle, int32 everyNsamplesEventType, uInt32 nSamples, void *callbackData)
  
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  X_AxisIndex += NumDataPoints;
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  }	/ / EveryNCallback

  Thank you, WW, I'll give that a try.

  > For input analog, the USB-4431 has a size of 1 023 sample buffer, and it is shared by all channels. .

  Can you tell me where you found this information please? I looked and looked, obviously in the wrong place.

  Also, I discovered that if I move the mouse quickly as he tries to redraw the graph, it draws a lot more systematically and quickly, but still not in real time.

  UPDATE: I got SetSleepPolicy (VAL_SLEEP_NONE); active.

  I thought it was to prevent Windows events interfere with the events of data acquisition. Seems to have the opposite effect here. I turned it off, works great now.

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