prevent row selection in Listbox

General
1

Is there any way to prevent a Listbox row being selected when clicked on?

I have created a class based on ListBox with a mode property.I want rows to be selected when clicked on in “edit” mode but not when in “read” mode.

I’ve tried various things in the cellclick and backgroundpaint events but I can’t find a way to prevent selection in “read” or to cancel it immediately after it has happened. Is there a quick fix?

2

In the Listbox.Change event put

me.ListIndex = -1

The selection will still flash, but can’t be selected

3

If you want to prevent any row from being selected you can return true in MouseDown to prevent the row flash.

4

Thanks guys, those work fine. Unfortunately, they create another couple of problems for me.

At the moment, in read mode, if the user double clicks a cell, the Listbox puts the cell contents onto the clipboard for pasting into another document. That will no longer work.

I also need to be able to respond to a click to access the celltag and the text in any cell where the celltag is “”. That’s because the cell will contain a URL and I want to call a showURL to open the dafult browser and go there.

I just don’t want to actually select the row as if I intended to edit it, but maybe I have to put up with that in order to do these things?

5

You might be able to fake a non-selection with CellBackgroundPaint and CellTextPaint by setting them to the unselected colors if you’re in read mode. Not the greatest solution but it could work for you.

6

Thanks. I did try that, but I couldn’t get it to work and anyway I think I’m probably being a bit too finicky seeing as it’s part of the functionality of the Listbox to be able to select things. Thanks for the suggestions.

7

Quick example project that shows it working: Lying Listbox.xojo_binary_project
(yes, I like stupid filenames)

8

Hey thanks, Tim. That’s a really good compromise. Thanks for your help!