use call library function to return a 1D array

[Xinghe.W]

Hi, I want to use Labview to receive a 1D array from a dll. I can find the "array Data Pointer" in the input settings, but in the "return type" I could not find the array option. So how should I do to return the 1D array?

[Alexander_Sobolev]

It does not return array directly, only pointers in parameters.

Connect array to the parameter input, it will be filled on the output. LabVIEW gets array pointer, passes it to the dll itself, inside the node. Depending on DLL type you may need to preallocate array (initialize array with enough elements) to fit output data.

[Xinghe.W]

Could you give me a simple example of it please? I'm a little confused.

[Alexander_Sobolev]

Help -> Find Examples -> Call DLL.vi has examples for all data types.

[Xinghe.W]

I'm using Labview 2015 and I could not find the call dll.vi in the "example search". Can I download it somewhere?

[Kyle97330 · Accepted solution]

Looks like it's now named "External Code (DLL) Execution.vi".

If you browse to it, it's under the main heading of "Communicating with External Applications" and the sub-heading "Using External Code".

Run it, scroll to the bottom of the list, double-click "1D Array".

[Alexander_Sobolev · Accepted solution]

hmm... i would be very surprised to know they really removed such an example.

Call Native Code.llb - > call dll.vi.