What is "CAFC" in the file "toolbox.h" of head?

I want to know, what is 'CAFC '? where is the definition? I everwhere a search, but cannot find it!

Hello

I think you speak for macros nullChk and errChk.

They are definitions of macros to handle errors.

CAFC is a placeholder for the function you enter to this macro.

Everything you type instead of CAFC is copied and pasted as it is.

What you call: errChk (SetCtrlVal (Panel, ctrl, val));

This call runs the function SetCtrlVal returns the result in a variable named error, if the return value is less than 0, then, it jumps to a label named error.

If you call this macro in your code, you must define the error variable and to label error somewhere in your code. Otherwise you get compile errors.

Look in the samples folder to see its use.

Also read articles on the management of errors for more information.

Tags: NI Software

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