List Box Display as Dropdown possible?

[oopskoop]

I have very limited space on my form and I am confronted with the following problem:

- I have a very long list of items of which the user should select one, none or multiple. This eliminates the usage of a dropdown field.

- List Boxes would be better for this task, but they should display only the standard value "none" and expand like a dropdown list and then accept multiple values.

Is this possible, and if so: how? I spend the last 90 minutes googling and am still clueless, any help is appreciated.

[MinusZero]

Hi,

I am not sure i understand what you are trying to do.

Do you want the listbox to only display the selected values after it is exited?