QTableView is extremely slow (even for only 3000 rows)
qt, qtableview
Solution
Good call on the autoresize on contents for your columns or rows.
I have a function that added a column to the table each time a client connected to my server application. As the number of columns in the table got large, the insertion time seemed to take longer and longer.
I was doing a ui->messageLog->resizeRowsToContents(); each time. I changed this to only auto resize the row that was being added ui->messageLog->resizeRowToContents(0);, and the slowness went away.
Problem
I have a table with 3000 rows and 8 columns. I use the QTableView. To insert items I do: ``` QStandardItem* vSItem = new QStandardItem(); vSItem->setText("Blabla"); mModel->setItem(row, column, vSItem); ``` where mModel is QStandardItemModel. Everything is fine if I have not to many rows, but when I am trying to visualize big data (about 3000 rows), then it is extremely slow (20 seconds on Win 7 64-bit (8 core machine with 8 GB of RAM!!!)). Is there anything I can do to improve performance? Thanks in advance.