[Qt-interest] QStyledItemDelegate

[Kaleb Pederson]

On Wed, Jun 17, 2009 at 7:43 AM, Lars Amsel<Lars.Amsel at signalion.com>
wrote:> Hi,
>
> I try to customized the item delegate of a table. I want to change the background color of a cell depending on its content. The following works perfect
>
> class MyDelegate : public QStyledItemDelegate {
> protected:
>  virtual void initStyleOption(QStyleOptionViewItem* option, const QModelIndex& index ) const;
> };
>
> void MyDelegate::initStyleOption(QStyleOptionViewItem* option, const QModelIndex& index ) const {
>  QStyledItemDelegate::initStyleOption(option, index);
>  option->palette.setColor(QPalette::Text, Qt::red);
> }

But, why didn't you just change the model's data call so that data()
returns red for Qt::BackgroundRole?

--Kaleb


> Now, every cell displays its text as red. When I change the setColor to
>
> option->palette.setColor(QPalette::Window, Qt::red);
> or
> option->palette.setColor(QPalette::Background, Qt::red);
>
> Nothing happens. I guess the painter thinks the cell is transparent. But how to change that behavior?
>
> Thanks
>
> Lars
>
> ---------------------------------------------------------------------------------------
> Lars Amsel
> Software & Protocols
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