Labview 8.0 multicolumn listbox

hi guys,
i want to add the names in the multicolumn listbox by right-clicking on the corresponding row and column .from the menu list that is displayed when i right click .
help me in doing so.....
Thanks & Regards
J.Venkatesh

Hi Venkatesh,
See here for more idea...
Sorry for delayed attachment, net is slower here today, in my off...
- Partha
LabVIEW - Wires that catch bugs!

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LabVIEW 8.2 Multicolumn Listbox Edit Cell Event Bug

I've observed an odd behavior with the "Edit Cell?" event with multicolumn listboxes. If the "Edit Position" is set when clicking on the listbox and the "Edit Cell?" event is trapped with discard set to false, when clicking outside of the list box, previous edits are lost. I have attached a simple example of this bug.
Attachments:
Listbox Edit Cell Event Bug.vi ‏19 KB

Thank you for the update Fran.
I lost my bet and you earned your stars.
So it sounds like the issue was the multiple event structures alone.
I just like to keep track of what the final fixes are.
Ben
Message Edited by Ben on 12-06-2006 04:50 PM
Ben Rayner
I am currently active on.. MainStream Preppers
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Adding a single line to a multicolumn listbox?

Hi Community,
I have a multicolumn listbox which tens of thousands of lines where each line is color coded and represent a cycle with a pass/fail status. The only way I have found to add lines to a multicolumn listbox is to read its ItemNames property which is a 2D array of strings, add the new line to the 2D array and then write then new array back to the ItemNames property.
The problem is that after couple thousands of lines this get more and more slow.
Is there any way to speed this process up, maybe by adding the line to the listbox in a different way?
thx.

The Listbox, and Multicolumn listbox controls got many UI performance improvements in 2013, what version are you using?
https://lavag.org/topic/17009-labview-2013-favorite-features-and-improvements/
But even if you are on an old version there are many tricks to making the UI more responsive, like using defer panel updates, and virtual multicolumn listboxes.
https://lavag.org/topic/15289-virtual-multicolumn-listbox/
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How can I automatically word wrap a string placed in a (multicolumn) listbox ?

Hello,
Using LabView 7.0:
I need to automatically wrap text inserted in a multicolumn listbox.
The size of the listbox is fixed and I don't know the legth of the string that will be inserted. But the whole string must be visible, because it's Information is important
I'm not allowed to use a fixed width font. :-(
Has anyone any ideas (or a solution already?)
How can I compute the length of a string in pixel to calculate to position to wrap?
Thanks in advance,
best regards,
Rainer

Hi Veena,
The trick is to use the Get Text Rect.vi to calculate where to wrap your text string. There's no feature to automatically wrap the string for you, so you will have to split you string into sections/lines, that doesn't exceed the width of the column in the listbox.
Good luck!
- Philip Courtois, Thinkbot Solutions

How can I set font size of a column of Multicolumn Listbox at one time in edit mode?

HI,
I want to creat a Multicolumn Listbox with different font size in diffrent columns.
But I can only modify all cells or one cell font size at one time!
How can I do?
THANKS!

My labview version is 7.1.
I can't open the .vi you deliver.
And in LV7.1, I can't find fontsize setting in property node.
thank you all the same!
Attachments:
1111.JPG ‏27 KB

How to change the text size of a multicolumn listbox ?

I would like to have all text in my multicolumn listbox biger and bold. I don't find anything with property node.

Hi
Use the Positioning tool to select the entire Multicolumn Listbox. Then use the Text Settings in the LabVIEW toolbar to change the font, style and so on. You will see that the font of all the items in your Multicolumn Listbox (including its label) are changed at once.
If you want to change only one item, than you can use the Text tool.
Luca P.
Application Engineer
National Instruments
Regards,
Luca

Entries into Multicolumn Listbox/Safing Data in .txt-file

Hello. I haven't found anything helpful for my problem or better to say problems. I have to do a task that I have no idea how to solve. It isn't helping that I was never good with programming. Here is what I have up till now:
I want to write seven strings indivudally into a multicolumn listbox with seven columns. The first shall be a running number, increasing for every row. For this I'm using right now a Case Structure. And there is my first problem. I don't know how to realize that whenever a row is completed the next string is written into the next row instead of overwriting one in the completed row.
This has to go one for as long as the user wants to. Then there has to come a Pop Up Window - if that's the correct term - and shall ask the user if he/she wants to safe the created list into a textfile. And that's my next problem. I have no idea how to program that.
I know it's probably rather easy to program these things in LabVIEW 8.0 (which I'm using) but as I've already said I'm anything but good in programming at all and to make things even more complicated I don't want to do this task, therefore not putting all my energy into it as a result.
Please, can someone here help me?

Does it have to be a multicolumn ListBox?
Seems like a table might be more appropriate, if it's only for display purposes.
Either way, you need to use a FOR loop inside a FOR loop to generate a 2-D array of strings.
The INNER loop generates the strings for each column in a row, the OUTER loop generates each row.
You wire the 2-D array directly to a TABLE indicator, or to the ITEM NAMES property of a ListBox.
Attached is a pic.
Message Edited by CoastalMaineBird on 08-21-2007 01:52 AM
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks
Attachments:
TwoLoop.png ‏226 KB

How to read 'clicked header' AND selected row from multicolumn listbox?

I have a multicolumn listbox filled with 6 columns and about 500 rows.
I want the user to be able to click on a column header, and sort the listbox alphabetically on that column. I've written the code for that, and that works. (using the 'itemnames' en 'get clicked col hdr' properties.)
However, I also want to include the option, that when a user highlights a row, and then clicks on the header, that after the listbox gets sorted it scrolls down to the selected row.
(So that the user doesn't have to search for it)
And that's where things go wrong, because the value of the listbox changes to zero when you click on a column header. No I idea why it does that, but it's rather
annoying. Can I change that behaviour somehow?
Or any ideas how to get around it?

My thanks to you and Jared.
Seems I got a working solution now.
Did take a while to figure out why your solution worked. Basicly, you're reading the row from a few iterations before.
As soon as I understood that, I simplified it a little. Look at the attached file... I think it does the same. :-)
Jared asked for the sorting routine. As I don't seem to be able to attach files when replying to comments, I took the liberty to include it here also.
Basicly, I just use the 'sort 1D array' that comes with Labview 6. To be able to sort a 2D array, I convert every row to a cluster. That's something the 'sort 1D array' VI can handle nicely.
To sort on the correct column, I just cut all columns in front, and paste them behind again. A
fter sorting, I reverse the process.
Anthony.
Attachments:
copy2_of_multicolumn.vi ‏26 KB
sort_2d_string_array.vi ‏34 KB

Problem with Multicolumn Listbox Scrolling

Hello...
Can anybody please tell me how to scroll according to row no. in multicolumn listbox?
I'm working on a VI where I have to test some conditions which are depending upon RPMs... For testing ease I have sorted the conditions according to the similar RPM... But the conditions are scattered in the multicolumn listbox ie they are not in sequence... Suppose the conditions are on row no. 1, 7,15,38,56,82,100,139,180 something like that....
Is it possible to scroll down according to row no. While running the VI...? So that the viewer can see which condition is in progress & it's results...
Thanks in advance for any help...

I have seen a property in a scrollbar that limits the scrolling range to it's maximum.
I'm not sure the same property is available in 7.1.
You might need to remove the listbox's own scrollbar and use a seperate one.
Ton
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Drag and drop from Multicolumn listbox to another Multicolumn Listbox

how do i drag and drop from Multicolumn listbox to another Multicolumn Listbox?/...any example..
use LABVIEW 8.2.1
regard's
eyal.

To drag and drop within the target listbox you'll have to add a Drag Starting? event for the target listbox and register that drag data with a different adn unique Drag Data Name, then in the Drag Enter? event check for that data name as well before accepting the event, and then in the Drop? event for the target listbox handle the new data name as well. You can use the Point to Row Column invoke method to determine which row, column, or cell is being manipulated. I've created a VERY crude example of this, but you'll have to get more creative with how you handle the moving of rows, columns, etc. for the target listbox, but I think it gives the general idea. Hope this helps!
-rw
Attachments:
Drag and Drop Example v2 8.2.vi ‏28 KB

Row headers string in a multicolumn listbox

Hello!
I'm using multicolumn listbox block and I want to put row headers, but I don't Know how.
I'm using the node property block to put column headers...but I don't find for rows.
Someone knows what I have to do?
Thanks a lot!

I don't think there is a row header property like the column header, you can leave the first row blank and white the headers in the first column so simulate it. You can create a simple subvi which takes a reference to the control and a string array and in a for loop set the string value of cell (0, i) to the value of the string[i] array input. As far as I know there is not a row header like there is a column hearer though. This is typical in spreadsheets where the rows are indexed and not named but the columns are.
Paul
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

Regarding Array to Multicolumn Listbox data's manipulation

Hi - I want to display the above mentioned array in muticolumn listbox with 2 columns , first column needs to be belongs to array [0] (Date and time ) and second column needs to be belongs to array [1] and array [2] ( Cone and Vane strings).
I have tried to implement the same, please go through the attached VI and I cannot make the above mentioned array data's into two column multi column listbox data's (that is , can't able to display the array [1] and array [2] data's in single column.
Please let me know the solution to resolve this as soon as possible.
Thanks and Regards,
Dinesh
Attachments:
Cone and Vane Operations_Final.vi ‏60 KB

Well, your VI is a complete mess and has several CPU burner loops that run as fast as the computer allows. There is also a lot of duplicate and overly complex code. Programmed correctly, code with all this functionality could probably fit on a postcard.
Anyway, for just building the multicolumn listbox, here's somewhat simpler code. Hopefully you can adapt it to your problem.
Note that you probably want to add only one row at a time, and you only want to add to the listbox and save to the file when new data arrives and not millions of times per second. Try a queue, for example.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
Cone&Vane.vi ‏8 KB

Multicolumn Listbox not more than 32 Symbols?

I have a Multicolumn Listbox. In the first row, I have a symbol (the diamond). Configuration of the Listbox is done via the frontpanel editor. Data is inserted programmatically, as well as the size, visibility and colors of the symbols are set programmatically. Basically, everything works fine. BUT when I insert more than 32 rows into the Listbox, there are no symbols on rows 32+.
I did not find any signs that the number of rows or number of symbols is set to 32 anywhere in the code or on the frontpanel editor.
What could be the reason for this strange behavior?

mibeer wrote:
So the strang behaviour could probably be reproduced by just adding programmatically a random number of entries to a multicolumn listbox upon click of a button.
Well, guessing does not really belong here.
If you suspect a LabVIEW bug, wire up a small example that demonstrates the problem and we can immediately eliminate the "probably" and get a definite answer instead. We like facts better!
Please do so! Thanks.
LabVIEW Champion . Do more with less code and in less time .

How to hide multiple columns in multicolumn listbox like as an excel sheet?

Hello All,
I have large amount of data that is to be displayed on multicolumn listbox. After displaying that, I want to hide or delete some columns from listbox in runtime.
I know how to hide one column using active cell property node. But I want to hide multiple columns. I am using LabVIEW 2011.
Thanks in advance.
Thanks & Regards,
Manisha

Thank you so much.
But I have total 12 columns and I don't want to delete columns serially. I want to delete inbetween columns, like in attached VI I want to delete column A & D only.
And in this user have to select it from frontpanel. I want this is to be done as in excel, like we select the entire column and either we hide it or delete it. One more thing I want to clear the data in multicolumn when I next time open my VI. How to do that?
I hope am clear in explaining my problem.
Thanks & Regards,
Manisha
Attachments:
Delete Column.vi ‏10 KB

Ever wonder how to create alternating row colors in multicolumn listbox?

Here's how

LabViewNubie (Matt) wrote:
Thanks for giving me something else to throw in my "bag of tricks". 90% of my current LabView knowledge is from your "LabVIEW For Everyone" book so I guess it's been upped to 91% now!
Matt,
I'm happy that you're finding the book useful. Jeffrey Travis (my co-auther) and Lisa Wells (co-author of 1st edition) deserve a whole lot of credit, too :-) And, regarding the multicolumn listbox trick, the amazing Michael Aivaliotis and Philippe Guerit are JKI's LabVIEW user interface wizards who deserves all the credit. Generally, I just ask for the user interface features ;-) Michael and Philippe are the ones who make it happen. Also, I just learned that they're working on another article about how to make your own cool looking buttons with glyphs. Stay tuned...
Thank you,

Labview 8.0 multicolumn listbox

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