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POHow to use a QStyledItemDelegate to render QIcons for a column?
 

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  1. POHow to use a QStyledItemDelegate to render QIcons for a column?
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    <p>I am using a QTableView and QSqlTableModel to show data from a sqlite DB. In the DB (and model) there is a column with fields that contain either paths ie: '/home/foo/bar.txt' or nothing. For this column in the view I would like to render one icon for items with a path, and a different icon for items with nothing (and not render the actual data/path in the view at all).<br> I <em>think I</em> need to set up a QStyledItemDelegate to render icons in place of the data, but the staritemdelelgate from the included examples highlights the editor function of the delegate (which I do not want) without shedding any light on how to render QIcons (or maybe I am just missing it). I have looked through the API, but I am unclear as to how to subclass a QStyledItemDelegate, or even if I need to for this use case.<br> Some guidance on whether this is a viable method, or an example of how to use a QStyledItemDelegate to render icons for a column (preferably in python) would be appreciated.</p> <p>EDIT: Petr's post solved the issue. A full implementation of the situation I described, based on Petr's solution is:</p> <pre><code>def data(self, index, role=QtCore.Qt.DisplayRole): if index.column() == 2: if role == QtCore.Qt.DecorationRole: filename = super(MovieModel, self).data(index, QtCore.Qt.DisplayRole) if not filename == '': return self.yes_icon else: return self.no_icon elif role == QtCore.Qt.DisplayRole: return '' #Other columns/roles: return super(MovieModel, self).data(index, role) </code></pre> <p>Hope it helps. </p>
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