How to update/refresh main panel's image displays inside subvi?

[aricn]

Hi everyone,

I have a image display control located in my main panel,  and I have a subvi which do some process works inside it.

but what I have done inside the subvi can not be seen in the main panel.

I used image session controls as the input/outpout nodes for subvi.

If I use image display control as input node for subvi,

I can see the realtime displays in the subvi's panel,

but this is not waht I wanted.

anyone have good idea?

[Andrey_Dmitriev]

Use reference to Vision Control. Then you can use Value Property node for ImageControl in your SubVI and Refresh Image method.

http://zone.ni.com/reference/en-XX/help/370281P-01/nivisionlvbasics/display_an_image/

Andrey.

[aricn]

Thanks Andrey, but maybe i donot present my confuse clearly.

The problem is,

if I use a imaq image control inside the subvi as input, what updated only can be seen in the panel of subvi, the imaq image control on the panel of mainvi do not refresh.

if I use the image session control inside subvi as input, there is no display inside subvi, neither updated for image on panel of mainvi.

what I want is,

1. image display was located on front panel of mainvi,

2. image process was completed inside subvi,

3. image of mainvi update imediately according to process inside subvi.

[aricn]

BTW,

inside the subvi,  I pass the processed result to the property node vale or vale(signal), even I call the 'refresh display' metheod, neither have the effect.

[Klemen]

Hello aricn,

I am not sure if I understand correctly, but see the two attached examples.

Best regards,

K

[aricn]

hi Klemen,

what you give me is 2012 while mine is 2011, could you help to save as old version? Thank you.

[Andrey_Dmitriev · Accepted solution]

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@aricn wrote:

BTW,

inside the subvi,  I pass the processed result to the property node vale or vale(signal), even I call the 'refresh display' metheod, neither have the effect.

---

Strange.

For example, this is your main VI (where Image Display is placed):

This is your SubVI, where Image Displays gets updated by reference:

Now Image Display updated in Main.vi from SubVI:

Project (LV2012) in attachment.

Andrey.

[Andrey_Dmitriev]

The project above saved for LV 2010.

[Klemen]

Reall sorry, i have attached 8.6 version.

Also, I think the answer of Andrey_Dmitriev is what you are looking for. I think I understand your problem now. My example updates the image only after subVI is executed.

Regards,

[aricn]

Andrey and Klenmen, thanks very much for your great help.

Andrey's giving is just what i wanted, from your code i know HOW to do, i arrange the code like your block, and it works fine.

But more detailly WHY, i dot know, specially two fuctions, 'to more specific class' and 'to variant',

before i think the Image Out node could be linked directly to image control's 'Value' property node, it should be working, infact it not.

I will use this style afterwards.