Machine Vision

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LabVIEW and Halcon

Don't know, what's wrong in your case, but I've just checked this on LabVIEW 2019 (64-bit) and HALCON HDevelop 18.11 Steady (64-bit) and everything is working fine. I used my basic sample " ‏20 KB" and changed nothing in the build specs when generating the exe. So, that exe requested these things only:

1) LV RTE 2019 (64-bit);

2) halcondotnet.dll and halcon.dll in data folder near the exe;

3) license.dat near the exe.

That was enough to get it running without errors.

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Message 31 of 67

I seem to find one more way to grab the array pointer in LabVIEW. It will work only on LV 2017 or higher and is strictly experimental, because relies on untested internal feature (ArrayMemInfo). Therefore you may give it a try, but I still don't recommend its use in any final projects. ArrayMemInfo node eliminates DSNewPtr / DSNewPClr, MoveBlock and DSDisposePtr nodes, but to read back the resulting image, you still have to use MoveBlock or similar function from your OS API.

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Message 32 of 67


When I used the vi of 'Array_Ptr_w_CINs_LV2010_x32', errors occured.

This is the details: I copied the code of the vi to a new vi, then I save the new vi and closed the Labview. When I opened the new vi again, errors occureed in the node of code interface of the 'Get Ptr Of Array' and 'Get Array By Ptr'. Errors are 'subroutine link error' and 'no object code is loaded'. 

 I ran the vi on LabVIEW 2018 (32-bit) and HALCON HDevelop 12 (32-bit).

Can you tell me the reason?

My english is poor, I hope you can understand my description.

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Message 33 of 67

Hi, LBD99!


That initial CIN method was superseded by more reliable ways of pointer manipulations. Take a look at ‏20 KB and try it inside your application.

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Message 34 of 67


I have downloaded an ran the vi. Error occurred in the node of the 'LabVIEW:DSDisposePtr' such that 'Error creating instance of IntPtr in assembly System.IntPtr, mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089, (System.OverflowException: Arithmetic operations cause overflow.) <append><b>System.OverflowException</b>'. And there is no picture showed on the HWindowControl.

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Message 35 of 67

You need to switch from 64-bit to 32-bit constructor if you're using 32-bit IDE's. Do a RMB click on this node and choose "Select Constructor", then choose IntPtr(Int32 value) and confirm the change.



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Message 36 of 67

Okay, thank you for your help.

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Message 37 of 67

It is very nice of you. In addition, I want to know how to find the node 'LabVIEW:DSDisposePtr'.Can you give me the answer?

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Message 38 of 67

It's directly on the block diagram.




And here are the doc's for it. But you don't need to alter anything there. You receive the error on this CLFN, because it's the last block on the way of error in/out cluster and no error handler is attached. The real error is happening on Constructor Node, LabVIEW just passes it by wires through all the VI's, which have such error in/out cluster connected.

If you don't want to receive the errors on that CLFN any longer, ignore every error there by attaching Clear Errors VI or by framing DSDisposePtr into Sequence Structure and disconnecting error in/out cluster.

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Message 39 of 67

Perhaps I didn't make myself clear. What I mean is that how to put the node on an new blank block diagram.

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Message 40 of 67