Not sure what you're trying to achieve here, but since the drop-down is a property of a field, no, you can't do this directly. If all you want to do is make a selection, you can either use a portal and a Virtual List, or just put the drop-down on a global field (so you don't care if it gets edited).
drop down list control has editable text entry plus select from list and you can't change that as a property in inspector. maybe you could layer some other control over just the text part that would prevent entry?
why not use popup menu control?
I'm with Mike in not understanding the reason you might want this. You could define a global text field to receive your value so that it won't change a specific record.
To all those who replied,
thanks for your inputs. The idea behind this is to select a value from Value List in order to use it to filter a portal for example. The Pop-up menu is fine for that, but does not provide a scroll bar if there are a lot of values. For sure I can use a portal to implement that, but the advantage of the drop-down is that it takes less space. On windows, we can implement that because combo box is a style for the drop-down. When combo box is not set, it's a simple list.
On another point, with a Pop-up menu, you may display only the second field (Value List) but unlike a Drop-down, it's the second field value that's displayed, not the first one.
Use a global field and put a validation (member of value list) on it. Then they can't insert something that doesn't exist.
Or use a portal with a Virtual List.
I don't particularly like validations in Filemaker, because they may fire some kind of message. If I can find a way for the user to do it right without validation, then I uses it. I finally found a way to achieve what I was looking for with only a small UI distortion. The fake is pretty good when the list is closed:
The distortion is when the list is open:
the list is displayed to the right. The way I did it is having the Drop-down width changed to show only the arrow, and having a Text box located at the left of the Drop-down. The global field hold the key, and the Text box displays the name associated to the key. With a little cosmetic, this looks like a standard Drop-down.
I was able to do it thanks to all suggestions from you guys .
How can I mark a reply as useful, I just can't find how to ?!?