size of pixmap in tableview

[Cremers]

Hello,
I'm stuck.
I have a set of pixmaps in 3 sizes 16x16, 24x24 and 32x32.
I want to display them in a tableview:

switch (size)
 {
 case 16: model->setItem(a, b, new QStandardItem(symbol16[c], "")); break;
 case 24: model->setItem(a, b, new QStandardItem(symbol24[c], "")); break;
 case 32: model->setItem(a, b, new QStandardItem(symbol32[c], "")); break;
 }

switch (size)
 {
 case 16: model->setItem(a, b, new QStandardItem(symbol16[c], "")); break;
 case 24: model->setItem(a, b, new QStandardItem(symbol24[c], "")); break;
 case 32: model->setItem(a, b, new QStandardItem(symbol32[c], "")); break;
 }

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But the table always displays the small size, it's like it resizes the big ones.
When I paint them on a qimage or something, all is fine.
I tried QStandardItem::sizeHint but no go.

Thanks for your help.

[ChrisW67]

QStandardItem::setIconSize()?

[Cremers]

Hi Chris,
I get error: 'class QStandardItem' has no member named 'setIconSize'

I made it work using a delegate, but if there's a simpler solution I'd still like to know.

Well, I have the same problem with the bitmaps in the header. Can I use a delegate on the header data from QStandardModel or how is this done?

[ChrisW67]

Sorry, my bad (I blame early morning). QAbstractItemView::setIconSize() is a function on the view.

The QHeaderView does not implement the delegate arrangements you get on the items in the content area. You should try setIconSize() on the header also.

[Cremers]

Thank you.
It works great on the tableview (just when I had figured out how to do a delegate )
But

table->horizontalHeader()->setIconSize(QSize(32, 32));

table->horizontalHeader()->setIconSize(QSize(32, 32));

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does not seem to have any effect.

Edit: upun searching I found this:
Not all ItemDataRoles will have an effect on a QHeaderView. If you need to draw other roles, you can subclass QHeaderView and reimplement paintEvent(). QHeaderView respects the following item data roles: TextAlignmentRole, DisplayRole, FontRole, DecorationRole, ForegroundRole, and BackgroundRole.

So I guess I'm out of luck. Reimplementing paintEvent() is a bit out of my league for now.