I want create dropdown menus that allow selecting/deselecting multiple items in the list.
I’d prefer if each item in the list could have a radio button that could be selected/deselected from the code as well as by the user (to allow ‘select all’ or ‘deselect all’), but simply the list that would allow selecting or deselecting multiple elements via selection/highlighting is likely as good.
My suggestion would be to build a dropdown menu (with all the features you desire) by using container boxes and the expand( ) / collapse( ) methods.
Use the box’s events (View Properties)- onMouseIn / onMouseOut to trigger the change.
I’d suggest you to take a look at this stunning Corvid Example (Code included) and alter it to your needs (instead of adding a repeater as shown in the example - add checkboxes or radio buttons).
@andrewgreenn was there any success? I also have the same requirement to display multiple items in a dropdown with Select All, Deselect All option, which allow the user to select single or multiple items in the dropdown. I have about 50 items in the list, so a multi select checkbox option will not work for me