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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.
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?