CheckListEdit, how to check if checkbox is checked next to an option and get value from this option

Could you please help me to obtain a satisfactory end result.
I want to use the CheckListEdit component and I would like to program it in such a way that by selecting the checkbox next to an option (items) so that the field at the top works like this
CheckListEdit-> Text = CheckListEdit-> Text + value of the selected option;
I don't know how to check if the checkbox next to a given option is currently clicked and how to get a value from this option.

With the property:
CheckListEdit.Checked[index: integer]: boolean you can check the checked status of each checkbox item in the list.