I need to fill a series of different clusters with data from a byte array. Ideally, I would like one function that would work for different cluster typedefs. To do that, I created a VI that takes in a general cluster reference and loops thru the cluster elements, getting the size of each element and reading that number of bytes from the byte array, then using those bytes to set the cluster element's value. To make this work, I need to know the sizeof each cluster element. Other discussion forum threads on sizeof said to flatten the control's value (which is a variant) to a string, then get the flattened string's length to get the sizeof the control. The problem is that the string created by flattening a variant contains a bunch of header info whose length and complexity depends on the data type of the control. I have figured out how long the flattened string header info is for numeric types and array types, but not for other data types. I have data types such as strings, arrays, clusters, and arrays of clusters within the cluster I am trying to fill from the byte array. These data types make the flattened string so complex that I cannot decipher the sizeof the control from the length of the flattened string. Clearly LabVIEW knows the length of any data type. I really like LabVIEW, much more than any text based language, but this problem is frustrating because getting the size of any data structure in C is as simple as calling the sizeof function. How can I get LabVIEW to tell me the length of any data type? Thanks,Hans

LabVIEW

Actually, my previous post does not work, but this one will, Everything you ever needed to know about a cluster. See attachment.

Message 21 of 21

(296 Views)

What do you need our team of experts to assist you with?

How can we help?

Please enter your information below and we'll be intouch soon.

This field is required

Preferred communication method

Email Phone call

What do you need our team of experts to assist you with?