dynamic control creation

[bfarley]

Is it possible to dynamically create controls in LV 7?

Bill F

[Mads]

Unfortunately no.

Sometimes using an array of the control e.g. or a multicolumn listbox and scaling it to show/hide new elements can be a workaround.

G Toolbox by George Zou allows dynamic creation of buttons though, you can find it at http://gtoolbox.yeah.net.

[Jim_Kring]

YES!!!

The name of the VI is "Get Contorl From Type Descriptor.vi" [sic] and it is located at:

LabVIEW\project\_NewProbeWizard.llb\Get Contorl From Type Descriptor.vi

Cheers,

-Jim

[Cult of Nurse's]

Yes, invent your own language and do everything in a string.

bfarley wrote:
> Is it possible to dynamically create controls in LV 7?
>
> Bill F

[Mads]

My interpretation of dynamic control creation would be the ability to add a new control during run-time (if e.g. a file contains 4 graphs and I want one button to control the visibility of each graph the buttons can be created when needed, no need to know the maximum number of graphs and hard-code that number of buttons...(in this example an array would work fine yes, just the first that came to mind).

Looking at the VI mentioned I believe that is still not possible...or?

It would be great if I'm wrong:-) ...

[Jim_Kring]

No, it can only target idle VIs 😞

However, I have seen a tool by Jean-Pierre Drolet, that dynamically "creates" controls by drawing them on a Picture Control and then uses some creative tricks for allowing user interaction.

[Ben]

I have used this technique in a number of applications.

LV 6.1's events make this a rather straight forward approach. You do a little math in the mouse clicks and what is visable and you can then overlay the image with a spare of the same control you store "off screen".

I must confess there is one gotcha in this approach. They look so much like normal LV controls you try to double click on them to find them in the diagram!

Ben

Ben

[Wiebe@CARYA]

Hi,

If you make one VI that has the control, and make it a .vit iso .vi, it
would look the same as a probe (make it a floater). You can open the vit
dynamically, and because it is a vit, you can open it several times.

Regards,

Wiebe.

"Mads" wrote in message
news:5065000000050000002E430100-1068850981000@exchange.ni.com...
> My interpretation of dynamic control creation would be the ability to
> add a new control during run-time (if e.g. a file contains 4 graphs
> and I want one button to control the visibility of each graph the
> buttons can be created when needed, no need to know the maximum number
> of graphs and hard-code that number of buttons...(in this example an
> array would work fine yes, just the first that came to mind
).
>
> Looking at the VI mentioned I believe that is still not possible...or?
>
> It would be great if I'm wrong:-) ...