Understanding Callbacks

[engine_motor]

How below callback working i mean how i will get data in Eventdat1,eventdata1,void *callbackData

is it it using file mapping technique?

Example:int CVICALLBACK HWAssignmentPnCallback (int panel, int event, void *callbackData,
int eventData1, int eventData2)

[ANDROID_FREEBOT]

Hi sudhirvasudevacahrya,

I'm still not exactly sure what you're asking, but maybe some of the following documentation and examples will help you out.

https://decibel.ni.com/content/docs/DOC-25363

http://forums.ni.com/t5/LabWindows-CVI/How-can-I-use-void-callbackData/td-p/16369

http://www.ni.com/example/26225/en/

[rolfk]

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@engine_motor wrote:

how callback is working....is it using filemapping??

It might, but it is very unlikely and should not concern you in the least. What is your problem, if you have any?