Using button to control subVI.

[lihui]

Can i use a button in my main front panel to break out of a while loop in the subVI during execution?

[Chris_de]

The attatched VI solves your probelm

[lihui]

Thank you very much, Chris.
May i ask u if there is anyway to disable the button first until certain execution is executed, before releasing it to the user?
Im actually working on a project that manipulate data across gpib. If the user press the button to early, certain data will not be received.

[Chris_de]

You can disable or hide the button using a Property node, and than activate or show after a certain execution.

[Anonymous]

How is it done? Sorry to trouble you.Im pretty new in this.
Can you show me a sample prog?
thanks again.

[Anonymous]

Hi lihui,

to make a property node you have to right click on the control in the
diagramm an then go Create --> property Node. To select a property you
have to right click on the newly created property and select property
--> visible, since visible is the desired property of the control you
want.

The attatched VI should help you to understand the functionality.

Greets Chris