TIWCGJQDropDownOptions.AllowClear Property
Whether or not a clear button is displayed when the select box has a selection. The button, when clicked, resets the value of the select box back to the placeholder, thus this option is only available when the placeholder is specified.
This option only works when the placeholder is specified
When attached to a select an option with an empty value must be provided. This is the option that will be selected when the button is pressed since a select box requires at least one selection option.
Also, note that this option only works with non-multi-value based selects because multi-value selects always provide such a button for every selected option.
published property AllowClear: boolean index 06 read GetBooleanValue write SetBooleanValue stored IsBooleanStored;
Property Value
Type: boolean