I apologize in advance if this question has been already addressed; I could not find any related material. The problem I have is that when I create a DLL, no problems here, I seemed to be restricted from selecting any of the outputs of my VI to be the return value. For instance, one simple case will be, add a text control as the input and then add a text indicator to be the output. One might think that the text indicator will be the return value by default since this variable has been assigned as the output; this is not the case. Instead I get a void function. void DLLSTringTest(char String[], char String2[], int32_t len) The output string (String2) its placed as one the function's arguments?? Please let me know if there are any tricks that I'm missing here.CAE

LabVIEW

Set Return Values when Creating A DLL

Hi Dennis,

Sorry that that I missed to explain that.

Yes that is what I am trying to do. I want to create a DLL via the LabVIEW application builder which includes a function which is returning a value if this is possible.

Message 11 of 13

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Do you have a numeric indicator in your VI and is it wired to the connector pane?

Message 12 of 13

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No just clusters and strings.

With a numeric indicator it works.

It seems that the other objects are handled as pointers and cannot be returned because they do not share the same heap. That could be the explanation why it only works with numeric values.