Add ComboBox to Cell of ListBox on click

Targets Windows
1

I would like to allow the user to select from a dropdown or type in own content when a cell is clicked/tabbed into.

Is it possible instantiate a ComboBox custom subclass and add it to a cell of a listbox when the user clicks on it?

2

Sure, but you would have to create the control yourself using a canvas, which might be a fair amount of work.

It’s easy to add a pop-up contextual menu, but it won’t be confined to the cell width. For entry of user text, you could use a modifier key to prevent the menu from popping up.

3

What if I already have a subclass of a ComboBox already defined. Can I add it to a cell using a canvas when the cell is clicked? Or do you mean I’d have to created the entire combobox control in the canvas from scratch?

4

You would have to create the entire control in the canvas from scratch. I went with a different method, but it is a little too complicated for the forum. Ie., it took a lot of work to make something like this work right.

1 Like
5

this is a working example of a listbox with combobox
be aware though, that it has been made with API1 xojo, and may have to be adapted for api2
and the new desktop controls.

6

Thanks, this looks great.