Add a Drop down menu / Combo Box into a specified cell of a multi column lsit box

[pahe]

Hello,

i have a question how to manipulate a cell of a multi column list box in that way that i can add a drop down menu or a combo box in this cell?
Is this possible in LabView?

Thank you!

[kaustubh]

Hi!

It is possible.

We have developed such module and currently we are using it in our projects.

 if you want more information email to support@viapl.com

kaustubh

VIAPL

[parthabe]

If your Multicolumn Listbox's size is going to be fixed [ fixed no. of Rows n Columns ], you can place those no. of Menu Ring controls or Combo Box controls & hide them at the initial stage of your VI. Then, when the user clicks on a particular cell of the ML box, you can pop the corresponding control from behind & show it & even allow the user to edit the value in it [only in the case of Combo control, text editing is possible].

This way you can make the user play hide & seek with the ML Box.

[parthabe]

Have a look at the below link & the attached VI.

http://forums.ni.com/ni/board/message?board.id=170&message.id=112875&query.id=522327#M112875

Replace the Table with the ML Box & try it out.

[smercurio_fc]

Be aware that the example VI that Partha posted has a number of bugs in it, so you'll need to make changes to it in order for it to work properly. For instance:

• Clicking on a table cell still displays the edit box behind the dropdown and there is drawing overlap.
• The code does not handle clicking on another cell when the dropdown is active (i.e. canceling out the dropdown).
  

[engwei]

a little modification. 🙂

[richjoh]

Attached you will find a barebones VI with a drop down menu (i.e an enum) arranged inside of a table (array).

I have not looked at the other VI posted here... I thought this would be a good challenge to try since I've never had to do this...sounded interesting.

I discovered I needed to use enum or ring thus the use of variant data type.

[richjoh]

This is done using LV 8.2

Message Edited by richjoh on 11-06-2008 04:27 PM

[Eugen_Graf]

May be this topic can help you:

http://forums.lavag.org/Table-with-Drop-Down-Items-t11249.html

Message Edited by Eugen Graf on 11-06-2008 05:00 PM

[richjoh]

Wow, I took a look at the alternate code posted here at that really takes you through gyration (also a similiar comment I see on Lava) to perform what I've done with a few functions....

See the Pics and attached VI for how its done. KISS, I added an event stucture and changed my first enum case to " " (i.e. a blank) to make it look like the other posted code....