Qeustion about opening/closing two IMAQ VI's so that you don't have to struggle with the File already open problem

i have included a VI to explain my problem that's how my application is build only then a lil more complicated but i left it to the basics since i can't share my full VI. The case is that if you press start the program should start and load a movie however if you either go to the other tab or when you click 'start' again the program should close the IMAQ file i just get strangled by the fact that i have no clue which loop to stop and where to close the video. Help would be greatly appreciated
Attachments:
example.vi ‏51 KB

Hello Rinus,
I think having two parallel while loops in this case doesn't seem necessary (and should be avoided).
As you said, you want to close/stop the video "stream" in the first tab when you open the second Tab (and probably also the other way around).
This would mean that you'll have to use a "framework" that allows you to have several states and can detect a change between tabs, correct?
The easiest way to implement this is by using a Design Pattern as starting point.
Can you make a flow chart that fully explains what the requirements are of your program?
This will allow you to choose the right design pattern.
If you are not comfortable with flowcharts, then a more complete description of the requirements would allow me better to guide you to an appropriate "framework".
Based on the current requirements a simple state machine could maybe do the trick, but this of course depends on the additional (not yet mentioned) requirements you might have.
I'm asking this especially because you refer to a "more complicated" top level application.
Kind Regards,
Thierry C - Applications Engineering Specialist Northern European Region - National Instruments
CLD, CTA
If someone helped you, let them know. Mark as solved and/or give a kudo.

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SENSE MICROSOFT! ...and you have to manage certs... and the only place where you gonna find the name of the server is inside the d*** Outlook Anywhere settings in the config tab, un it's own config button - CAN WE PUT THE CONFIG ANY FURTHER!
Frustrating beyond reason - that should be Exchange's new slogan...
Hope this will help people in the future and won't get delete because it's bad PR for Microsoft.
PS
ALSO if you want to pick a fight with me about how SSL is more secure... I don't wanna hear it - go somewhere else...

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{ sudo chflags -R nouchg,nouappnd ~ $TMPDIR.. ; sudo chown -R $UID:staff ~ $_ ; sudo chmod -R u+rwX ~ $_ ; chmod -R -N ~ $_ ; } 2> /dev/null
Launch the Terminal application in any of the following ways:
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Step 2 (optional)
Take this step only if you have trouble with Step 1 or if it doesn't solve the problem.
Boot into Recovery. When the OS X Utilities screen appears, select
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from the menu bar. A Terminal window will open.
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Qeustion about opening/closing two IMAQ VI's so that you don't have to struggle with the File already open problem

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