Re: [Fxruby-users] Listview control

[Lyle J. <ly...@kn...>]

On Dec 14, 2003, at 8:42 PM, Carl Youngblood wrote:

> Never mind.  I guess I need to call appendItem to add to the end of  
> the list.  But I'm still a little confused by setItemData.  It takes  
> two parameters, index and data.  What does data contain and how do I  
> set the values of multiply columns?

You can associate with each icon list item a reference to some other  
Ruby object. Say for example that every row in the icon list represents  
a customer, which is represented elsewhere in your application by a  
Customer object. Then you can make this association while you're  
creating its icon item, e.g.

	theCustomer = customerDatabase.getCustomer(...)
	iconList.appendItem(theCustomer.name, bigIcon, miniIcon, theCustomer)

You can change this association later using setItemData(), e.g.

	iconList.setItemData(itemIndex, someOtherCustomer)

I'm not sure I understand the second part of your question ("... how do  
I set the values of multiple columns?"). Each icon item (i.e. each row  
in the list) can be displayed with multiple fields when the list is  
configured in details mode. Those fields are specified as the "text" of  
the icon item, and each field is separated by tabs. So for example, if  
you wanted three columns (with the name, address and phone number of  
the customer) you might do something like:

	 
iconList.appendItem("#{theCustomer.name}\t#{theCustomer.address}\t#{theC 
ustomer.phone}", ...)

If this isn't what you were asking about, please let me know.

Hope this helps,

Lyle