Choosing the "Prompt User Input Value"

[labuda]

Hi,

Im using the Prompt User VI to prompt the user for a value. However, I would like the default value to be set programmatically.

The reason is that it prompts the user when to take a reading for a given X value. Rather than inputting the X value everytime, i would like the default value to be incremented by 1 everytime... unless the user decides to change the value, he shouldn't have to type anything (just press enter).

How can i do that?

Thanks

aleks.

[Johnner]

Aleks,

I don't think the Prompt User for Input VI will let you input default values.  However, you can create a very simple VI of your own to do the job (see picture below).  It uses an uninitialized shift register (AKA a "LabVIEW 2 style global") to keep track of the last value entered by the user and defaults X to the previous value plus one.

If you build this VI yourself (probably a good exercise), make sure to set the Window Appearance (File >> VI Properties) to "Dialog" so that it will pop up when called.

Have fun,
John