PRADO QuickStart Tutorial
Sample
Copyright © 2006-2025
The PRADO Group
TActiveListBox Samples
Callback listbox:
item 1
item 2
item 3
item 4
Changing items to a Listbox on callback
Adding an item on every callback:
Clearing / restoring the listbox on callback:
item 1
item 2
item 3
item 4
ListBox has been reset
List Boxes with Validation
Listbox is being validated:
item 1
item 2
item 3
item 4
You must make a selection other than the first option
Listbox causing validation:
You must enter a value
Agree
Disagree
List Boxes in Multiple Selection Mode
Use Ctrl + Mouse Click to change selection
Multiple items can be selected together:
item 1
item 2
item 3
item 4