Using multicolumn listbox as indicator

I am trying to have data that I am collecting display on a multicolumn as it comes in. I don't know if you can do this and if you can I dont know how I can control where the data goes on the listbox. So can anyone explain this please?
Thanks
Solved!
Go to Solution.

Use a property node with the property 'Strings []' to set the array (this also defines the order).
Felix
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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

Problem in resizing multicolumn listbox in

I am using multicolumn listbox to show my test to user. In development PC it looks nice and displays as much as column I want but in other PC where I am installing my application there last row column is partially visible.
I have set VI to resize the VI as per monitor resolution. Attached image for reference.
What could be the reason?
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet

RavensFan wrote:
The listbox scales with the front panel, which you said is scaling with the monitor resolution.
However, the widths of the columns do not scale with the listbox itself. You'll need to adjust them either manually or programmatically like Michael describes.
Differnt monitor have differnt resolution. It might possible that one montor I will keep 3 and other I need 4. Then in that case I need to make differnt exe file for each
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet

Multicolumn listbox

I need an object to store lab-measurements and are wondering, if it’s possible to use a multicolumn listbox.
My problem is that, I need to know the row number of the active row. By ‘the active row’, I understand the row belonging to the cell activate by user scroll using arrows/ or mouse click.
Background for my question:
I want to store the sample number I the first column. The sample numbers are imported from Excel.
The measurements for the actual sample should come in, in the cells to right in the same row.
The samples are not always ordered, which means, that I might need to scroll to the correct sample number.
In order to place the output from the measurement coming from my labView program, I need to know what is the row number of the activate row. But how ?
Is it possible using multicolumn listbox, or is there another object, which can do the trick?
In c# it’s possible to do as described using datagridview.
Solved!
Go to Solution.
Attachments:
example file.jpg ‏19 KB

I have added some code to your VI.
The event structure needs to be i a loop, otherwise your program will stop after the first double click
You need to initialize the array before you start replacing elements, because it is not possible to replace non existing elements
The Top Left property of the list box can be used to determine the index of the top left visible cell of the list box
I used now the double click as trigger to change the content of a cell, but you could use a user generated event instead, an fire this event each time a new measurement is available.
Attachments:
multicolumn listbox.vi ‏15 KB

Using a Multicolumn Listbox To Retrieve Selection Items

Hello, I want to use a Multicolumn Listbox as a control. This control will popup to a user and the user can select as many items (rows) as they would like. When they are done with selecting which items (rows) they would like to select they hit the Done key to end the selection process. Programatically, I then would like to create an array for all of the items (rows) selected. I have two headers: Test Code and Test Name. I would like to programatically create an array with the Test Codes and the Corresponding Test Names.
I think I can do this with property nodes but I am a bit new to using Listboxes. What is the best way to do this?
Thanks!

Hi,
Please check attached VI it may help you!!!
With Regards
Miraz
Kudos is better option to thank somebody on this forum
Attachments:
Multicolumn list box.vi ‏12 KB

I have a vi that reading data and put it in a multicolumn listbox one by one, I want to know how can I do it if i will use MS powerpoint instead of multicolumn listbox.

i want the data to be transfered in MS Powerpoint like what multicolumn listbox act in my vi.
(would you mind if i will ask for an example)
Thank You

Good morning:
I think you might have an easier time doing this with a Powerpoint macro than with Activex. You can save your data to a spreadsheet file, and then let the PPT macro read that file and format it the way you like. You will have to have two programs operating simultaneously, but that shouldn't be a problem.
Eric
Eric P. Nichols
P.O. Box 56235
North Pole, AK 99705

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

Is it possible to make a line of a multicolumn listbox active?

I currently have data entered into multicolumn listbox. While the program is running, is it possible for a row of the listbox to be selected and then give the index number of that row? From there I will want to use that index number to reference other arrays, but right now I'm just dealing with getting the index number I need from the user's row selection.

lmtis wrote:
The I32 is the default numeric constant, I didn't see the need to change it for this purpose.
You missed my point. The output datatype of the Value property node is an I32. You are wiring to an I32 indicator, but shoving it through a TypeCast function. This is pointless.
Message Edited by smercurio_fc on 06-20-2008 12:12 PM
Attachments:
Example_VI.png ‏4 KB

Write multicolumn listbox value from subvi whitout reference

Hi:
Is it anyway to write data to multicolumn list box from subVI without pass in reference? Because if pass in reference I have to pass a lot.
Like I can use Open VI Reference together with "Set Control Value" to set a String indicator text. But I can't find the way to use open vi reference to set the multicolumn listbox text, I only can highlist which row.
Thank.

One thing you could do:
Write the multicolumn listbox reference to an indicator in your main VI. In the SubVI read that indicator value and unflatten it into a multicolumn listbox reference. Then you'll have the reference available in the SubVI as if you had passed it.

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

Inserting an image in a column of a multicolumn listbox

Hi,
How can I insert an image in a column and row of a multicolumn listbox? Is it possible?
Thanks,
ToNi.

To change any property of a cell, you must first select it using the Active Cell Property node, a cluster of row and column indexes. Setting the indexes values to -2 select the entire row/column/table, including the headers, setting the indexes to -1 select only the headers.
Changing a column foreground color without affecting the header color is therefore a 3 steps operation :
- set the active cell property to -1, n (n being he column index); read the foreground color
- set the active cell property to -2, n; write the new foreground color
- set the active cell property to -1; write back the previously read foreground color
Since you cannot change programmatically the images in a ring, the pict ring array cannot be used if you want to load new images at run time.
Use instead a picture array, as shown in the attached vi. I still use a pict ring, but that's just as a convenient image source. Replace it with your own source (file dialog for instance...)
CC
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
ListBox & Picts.vi ‏1 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

How can I justify text in a multicolumn listbox cell dynamically

I use a multicolumn listbox with two columns to display an event list. Then number of events is different and can exceed the number of displayed rows. I need to justify the text in the first column to right dynamically.
Is there any way?

I would split the listbox in two different listboxes, each one with its specific format (make it static).
Doc-Doc
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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

Using multicolumn listbox as indicator

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