Qtablewidget does not scroll smoothly

Question

Problem: I have QTableWidget cells populated with text (10 columns). I found out that no matter how much rows I have (10 or 100000) scrolling over rows with heigth ~ over 3000 is very slow and not smooth enough (I've used table.verticalHeader().sectionSize(i) to find out heigth of every row).

What I've tried to do: So I've tried to set height of those rows using table.setRowHeight(i,3000), but still when I scroll over those rows I get delay of 1-5 secunds. Also in that case I need to manualy resize height of row in order to see all text in that row (because it was cuted), and that is slow too.

Questions: I need to do table.resizeRowsToContent() for all smaller rows, so I think solution would be to set limit for height of every row in table. There is setMinimumSectionSize() method but I can't find any for max size, so how can I do it? Is it possible to have scrollbars inside every cell where height is >3000 so I can scroll through text inside that cell? Maybe that will speed up scrolling throug table?

Any help would be appreciated

Answer 1

This is how I've solved it: While populating table cells with text, if my text have over 1000 lines (text.count("\n")) I put it in QTextEdit() and then set it with setCellWidget. Reason I didn't put them all in QTextEdit()s is that Windows can show limited number of GUI elements (<20000) and, as I said, I have 10 columns x up to 100000 rows