Running a subVI without interfering?

I have a main VI that runs in a continuos while loop, outside of that while loop I bring up a subVI to display data that is gathered in the main VI. The problem occurs in the sense that I want the subVI to come up at the beginning (no problem) and to stay up everytime a user clicks a button on the main VI (problem), instead it dissappears into the background and te user always has to click on the menu below to bring it into view, any way to avoid this? Setting Priorities?

Hi Helper
if you download the LV Window Utilities VIs from the NI site, you can use
the function "Make window always on top.vi". I think this is what you are
looking for.
this is the link to the Window Utilities:
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&74DDE683A1AFF698
8625683A000C0D73&cat=034E59A8530E09DF862568900018707A
if the link doesn't work, search for:
Windows API Function Utilities (32-bit) for LabVIEW
Good luck
Denis

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How to run a subVI without poping up normally, but when clicking a button, popup the front panel?

I know pop-up the front panel of a subVi when called by selecting VI Properties>>Windows apperence.
But what I need to do is: always run the SubVI inside the parent VI as the nornal subVI do without poping up. But when I click a button"show front panel", the SubVI popup the front panel.
Is there anyway to do this?
Thanks,

ossoo,
You can use a static VI reference to the subVI and then use the Front Panel Open invoke method to show the front panel when you want. I have attached two VIs that show this. I saved these VIs for LabVIEW 2009 so you should be able to open them up and run them in 2009 or later. Add.VI is the subVI that you are calling. The Caller.VI is just a While Loop that contiually calls the Add subVI. Inside of the While Loop is also a Case Structure with a Static VI Reference (you might need to change the path this is pointing to after downloading the VIs to your computer for this to work) and the Front Panel Open invoke method. You can run the Caller.VI and interact with the main Front Panel as normal and see the subVI but then you can click the Open subVI? boolean button and it will open the subVI's front panel. You can continue to interact with the main front panel and see the values update on the subVI's front panel as well. You can just close the subVI's front panel when you are done viewing it. Does this help?
Grant H.
National Instruments
LabVIEW Product Marketing Manager
Attachments:
Caller.vi ‏19 KB
Add.vi ‏23 KB

Dynamic start of subvi without waiting for end of subvi

How can I load and run a SubVI without waiting in the MainVI for the end of execution of the SubVI.
Im running LabVIEW Prof. Dev. System 6.1 on WindowsNT4.0

Use the Open VI Reference to specify the VI and then an invoke node. The method you want is Run VI and you can optionally Wait Until Done.

How to use "Start synchronous Call" to run a subVi and keep timeout event in Main vi still running?

Hi, All
I have a application need periodically check an instrument status and I put it in the "Timeout Event" in main vi. I also need call some subVis for configuration etc. Somehow when I called those subvi, the Timeout event in my main vi was not running. Then I use " Start Asynchronous Call" function to call the subVis. Turns out it works fine with some subvis without return value, but not as expected with "return value-needed" subvis.
I attached a simple test, my main vi call two dlg subvis: AboutDlg.vi and SettingsDlg.vi. In the timeout event, I just use a counter for simulation. When you run it, you can see the counter keep counting when the AboutDlg.vi was called, but stopped when SettingsDlg.vi was called.
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Solved!
Go to Solution.
Attachments:
AsyCallTest.llb ‏108 KB

Try playing with this - I have modified your code to poke a Q in there.
You will want to change the clusters to more useful datatypes (maybe enum and variant so you can unbundle variants depending on enum input), you will want to type def the clusters to make it easier to maintain and you will NEED to handle the sitaution where the called VI is left open on program close - i couldn't be bothered as this was not your immediate issue)
Hope this give you some Ideas - totalyy untested but should work.
James
Attachments:
AsyCallTest.llb ‏114 KB

Run a subvi by pressing a button multiple times

Hi
I wanted to run a subvi each time the user pushes a button.
So the subvi might be called multiple times & different instances of the subvi run simultanously with their front panels open.
To do this I made a .vit & call it by refrence wehenever a button is pressed but it doesn't work.For the first time it opens but it seems as if the .vit doesn't return after it is called. while if I use the same method & call the .vit by reference 2 times in parallel both of the front panels open without problem.
How can I solve this problem(the main & the subvi are attached LV 7.0).
Thanks for your attention in advance
Attachments:
main.vi ‏35 KB
subvi.vit ‏43 KB

Hi,
You have to run it dynamically, with the Run VI method. This method can
optionally wait or not. Before running the VI, you have to set the controls
with the method Set Control Value (or Set Control Value [Variant]).
There are several ways to read back values from dynamically started VI's.
One is to use a buffer (lv2 global). Another is to use the Get Control Value
method.
It's complicated, but if you put all this code in a sub vi, you'll end up
with a nice main...
Regards,
Wiebe.
"smal" wrote in message
news:[email protected]..
> Hi
> I wanted to run a subvi each time the user pushes a button.
> So the subvi might be called multiple times & different instances of
> the subvi run simultanously with t
heir front panels open.
> To do this I made a .vit & call it by refrence wehenever a button is
> pressed but it doesn't work.For the first time it opens but it seems
> as if the .vit doesn't return after it is called. while if I use the
> same method & call the .vit by reference 2 times in parallel both of
> the front panels open without problem.
>
> How can I solve this problem(the main & the subvi are attached LV
> 7.0).
>
> Thanks for your attention in advance

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Running a subVI without interferin​g?

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