<![CDATA[QTableWidget: Cells updating event]]>Hi!
Is there some mechanism like 'OnDrawCell' from C++Builder/RAD Studio?
In that method, there is work with Canvas, I could dynamically change Color, Text, etc of any cell, even the header cell. I just want to create a simple code for any cell.
Thank you!

]]>https://forum.qt.io/topic/116961/qtablewidget-cells-updating-eventRSS for NodeMon, 10 Aug 2026 10:25:27 GMTMon, 13 Jul 2020 11:52:14 GMT60<![CDATA[Reply to QTableWidget: Cells updating event on Fri, 17 Jul 2020 12:58:00 GMT]]>@sitesv
Hi
Yes, that would be a job for a delegate.
here is a sample where its a rating box
https://doc.qt.io/qt-5/qtwidgets-itemviews-stardelegate-example.html

but it could draw anything.

]]>https://forum.qt.io/post/607454https://forum.qt.io/post/607454Fri, 17 Jul 2020 12:58:00 GMT<![CDATA[Reply to QTableWidget: Cells updating event on Fri, 17 Jul 2020 08:40:48 GMT]]>@mrjj said in QTableWidget: Cells updating event:

Hi
A full blown OnDrawCell like CB would be a delegate however, you can
change color, font with Roles without resorting to custom drawing.

Hi!
Is it possible to dynamically draw inside cells something like colored figures: square, rectangle, etc?

]]>https://forum.qt.io/post/607418https://forum.qt.io/post/607418Fri, 17 Jul 2020 08:40:48 GMT<![CDATA[Reply to QTableWidget: Cells updating event on Mon, 13 Jul 2020 16:47:50 GMT]]>Hi
A full blown OnDrawCell like CB would be a delegate however, you can
change color, font with Roles without resorting to custom drawing.

]]>https://forum.qt.io/post/606530https://forum.qt.io/post/606530Mon, 13 Jul 2020 16:47:50 GMT<![CDATA[Reply to QTableWidget: Cells updating event on Mon, 13 Jul 2020 16:33:56 GMT]]>If you want to modify the displaying of a cell you can either return e.g. a different color for e.g. BackgroundRole or similar or use a custom QStyledItemDelegate to draw the content by yourself.

]]>https://forum.qt.io/post/606528https://forum.qt.io/post/606528Mon, 13 Jul 2020 16:33:56 GMT