How to show progess in a QTreeView item ?

[wysota]

What do you mean? The view calls the delegate when it needs to update some part of its viewport. If you want to force a redraw, just update() the viewport (whole or part of it).

[THRESHE]

Where do I get viewport to update ?

[wysota]

From the view

[THRESHE]

Is it so hard to answer more widely?

If I do so will it repaint my delegate ?

QTableWidget* tableWidget = new QTableWidget(this);
ItemDelegate delegate  = new ItemDelegate(tableWidget);
tableWidget->setItemDelegateForColumn(4, delegate);
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tableWidget->update();

QTableWidget* tableWidget = new QTableWidget(this);
ItemDelegate delegate  = new ItemDelegate(tableWidget);
tableWidget->setItemDelegateForColumn(4, delegate);
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..........................................................
tableWidget->update();

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Thanks in advance

[wysota]

No, it won't repaint your delegate, it will repaint your view. The delegate can't be "repainted", it is nothing visual, it's strictly a helper object that does some work on behalf of the view.

[THRESHE]

Ok Will it repaint my progressbar ? Or will it call ItemDelegate:: paint() ?

[wysota]

It depends If nothing in the item changed, the view might not call the delegate (especially if the item is currently not visible), but in general case - yes, it will call your delegate's paint method.

[THRESHE]

In my case it doesn't want to update

Could you suggest any other solutions ?

[wysota]

What exactly is your usecase? What exactly did you do and what do you want to achieve?

[THRESHE]

The thing is that I have a fancy progressbar that changes its colour depending on the state of download and when I start download the color doesn't change
It looks like on the first screenshot though it should look like on the second

[wysota]

Do you update the values in the items?

[THRESHE]

Do you update the values in the items?

What values and where ? Did not understand at all