Read XNode Icon

[Jim Kring]

I'm trying to read the icon of an xnode by reading the NI.Lib.Icon property, which is encoded zipped binary data of the image.

This code generally works for reading any LVLib icon (note dependency on OpenG Zip Library).

I've noticed that for many XNodes, the icon data looks very weird, almost scrunched up. Any ideas why this would be the case?

And others look fine:

 

[Neil Pate]

Could it be something to do with the fact that those two funny looking icons are expandable XNodes at edit time and expect to be redrawn on the diagram?

Edited January 20, 2017 by Neil Pate

[hooovahh]

Great suggestion Neil.  Since an XNode can redraw the icon at run time.  Looking at the Xnode library icon it really does look messed up.

 

I'm guessing this is because the actual VI ran to generate the image is the C:\Program Files (x86)\National Instruments\LabVIEW 2015\vi.lib\variable\VRDraw.vi file, and if you just run that with the default inputs then it generates a nice clean image.  Honestly this looks like a fault of NI and they made their XNode library icons messed up, maybe with auto generated icons or because they knew they would be replaced with scripting.

[Jim Kring]

OK, so I'm not crazy. :-)

[hooovahh]

1 hour ago, Jim Kring said:

OK, so I'm not crazy. :-)

Well lets not jump to conclusions here. 

Yes the XNode Editor I made a while ago allows for editing the icon associated with the library of the XNode, so even the community can set this static image of their XNode, even if the image generated by the ability is a different one

[hutha]

On 1/21/2017 at 0:59 AM, Jim Kring said:

I'm trying to read the icon of an xnode by reading the NI.Lib.Icon property, which is encoded zipped binary data of the image.

This code generally works for reading any LVLib icon (note dependency on OpenG Zip Library).

I've noticed that for many XNodes, the icon data looks very weird, almost scrunched up. Any ideas why this would be the case?

And others look fine:

 

For some reason, This snippet LV code (2015) won't work on my machine, Can you post a VI file. ? Thanks

[hooovahh]

So I'm missing a VI in that snippet for the decoding part which looks like some kind of NI get icon library.  But attached is the VI that was that snippet, and another way of getting the icon if you don't mind opening references.  I think Jim was interested in getting the icon without VI Server for its usage in VIPM.

Get XNode Icon.vi

[hutha]

17 hours ago, hooovahh said:

So I'm missing a VI in that snippet for the decoding part which looks like some kind of NI get icon library.  But attached is the VI that was that snippet, and another way of getting the icon if you don't mind opening references.  I think Jim was interested in getting the icon without VI Server for its usage in VIPM.

Get XNode Icon.vi

@hooovahh Thank You for the reply and attached VI code.