// Delete all the items in a Drop List User Control.
int $windowId;
int $controlId;
 
// First create a User Window to place the Control on 
$windowId = `createWindow "MyWindow"`;
// Create the User Control on the Window. 
$controlId = `createDropList $windowId`;
// Add some items to the Drop List.
addDropListItem $controlId "Item 1";
addDropListItem $controlId "Item 2";
addDropListItem $controlId "Item 3";
 
// Delete all the items. The Drop List will be empty after this.
deleteAllDropListItems $controlId;