I have a subVI which accepts control references as input. But these are optional inputs. I have code in the subVI whcih uses the refernecs. I want this code to execute only if the control refernce inputs are wired from the main VI. Is there any way I can check whether the control refernce inputs were wired in the main VI?
You can use Not a Number\Path\Refnum from the Comparison palette or you can type cast the reference to a numeric and check if it is not equal to 0. There are probably some other ways.
