Allow only one check box to be selected?

[Lee Brock]

I have a field consisting of two check boxes for the two choices in the value list. I have the field validation set up for "not empty" but how do I allow only one of he checkboxes to be selected?

Thank you.

[LaRetta]

Hi Lee,

Consider using radio buttons instead. That is their purpose - to allow only one or the other to be selected.

LaRetta :wink2:

[comment]

I agree. But just for fun...

SingleCheckBox.fp7.zip

[LaRetta]

Does this require 8.5? I'm getting unknown script-steps and function missing in tickbox_All calc.

Oops yes ... tickbox_All parameter, object name. I guess it's time to upgrade. :

Edited September 12, 2006 by Guest

[comment]

Wrong thread? It's a version 7 file.

[LaRetta]

Double ooops ... I had unzipped dynamicTickbox (which is certainly 8.5) instead of single checkbox! Too much on my desktop today to play with ...

[Kent Searight]

Nicely done. A nice advantage of Michael's solution over using a radio button set is that its behavior can't be overridden with a shift-click, as is the case with radio buttons. The only minor pitfall I can see is a potential to cause confusion with experienced FileMaker end-users that expect the checkbox set to behave normally, i.e. able to make multiple selections. But that could be addressed with a little ingenuity in the user interface design.

Edited September 12, 2006 by Guest

[comment]

Hmmm... I really did it just for fun. But if you do need a radio button that can't be overridden with a shift-click, just change the field's format to radio - it will work the same way. In fact, even if the field is formatted as an edit-box, it will still keep only the last (bottom) value.

[Kent Searight]

Hmmm... I really did it just for fun.

Never underestimate the benefits of fun.

But if you do need a radio button that can't be overridden with a shift-click, just change the field's format to radio - it will work the same way.

Good point.