[Qt-interest] Fwd: decoration role for the tree model subclass

[Arnold Krille]

On Wednesday 17 December 2008 01:19:11 ami guru wrote:
> do i have to overload the data() function for Qt::DecorationRole ?

You should already have overloaded the data function. Thereby you might have 
noticed that it has an in parameter indicating the role of the data requested. 
The first role you react to is Qt::DisplayRole because that is the role to 
display (hence the name) your data.
But there are more roles: There is for example a role to request a decorative 
icon for the item, so that role is called DecorationRole.

If you think about that mechanism and look at the roles explained at 
http://doc.trolltech.com/4.4/qt.html#ItemDataRole-enum is should become pretty 
clear...

Have fun,

Arnold
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