Directory Listing

General
1

I’m using a Listbox to hold all the filenames in a specific folder. I got that part working. Now I want to be able to grab the right side of the listbox and change it’s width by dragging the mouse. Usually a Slider component is used for this but the Slider I see is a different kind of Slider.

Any help appreciated on how to dynamically change the width of the listbox.

Thank you…

2

You need a grabbar next to the listbox. I use imSplitter for the purpose.

3

Hmmm…yeah…I don’t see that component…???

4

Download it from the github link. Its not part of Xojo

5

OK thanks…

6

Dont forget you can add horizontal scrollbars to the listbox so that the contents can be viewed without needing to make it wider

7

Yes and I will be doing that.

8

IIRC there is an example with the distribution, so I’d look at that first to see how to use it.

9

Yeah, I’m reading the github instructions:

Drag imSplitter.xojo_binary_code to your projects folder (or copy/paste it from the example project)

I guess I’m not copying the file to the right place because I don’t see any “Project Controls” section in my Library. I guess I don’t know where my projects folder is ?

10

Drop it on the navigation area in your project in the IDE - left most in the window.

11

Scroll down the library pane to see that.

12

I got it…and now I see it in the Project Controls…thank you very much…

13

Looks like I need to put my listbox inside a container?

14

Don’t think that’s a requirement. What else d’ye have in the window besides the listbox?

15

Right now just the listbox.

16

I got it to work using splitterMoved.

Thanks for all the help.

17

You can also compute the largest string (stored in a Row) and enlarge the ListBox | Window.

18

Is there a predefined method for that or do I have to manually figure it out?

19

You create a very small Picture;
You set the Font Name / Font Size the same as your ListBox,
You scan all Columns Contents and asn the Picture.Graphics what width it takes and keep the largest value,
until the last Column/Row.

Of course, it takes time if you have millions of row / hundred of Columns / j-you use an OnDemand display Canvas.

Is it clear enough ?