The bottom border of table header is gone again

[Lee908]

Re: formatting a QTableView header

@Christian-Ehrlicher @SGaist @kshegunov

Hi all, I noted that you have discussed about the related issue in the above topic. And seemly that issue has been fixed. But I reproduced it in some specified situations in windows with Qt 5.14.2 recently.

It works fine if display a table view in the dialog directly. But the bottom border of table header is gone when the table view is added into a tab widget and then display that tab widget in the dialog. I'm not sure if it's a bug. Hope you could give me a hint if you have any idea about that. Thanks.

Border is shown:

QTableView* table = new QTableView;
table ->horizontalHeader()->setFrameShape(QFrame::HLine); // show border here
...
QVBoxLayout* layout = new QVBoxLayout;
layout ->addWidget(table);

QDialog* dialog = new QDialog;
dialog ->setLayout(layout);
dialog ->show();

Border is missing:

QTableView* table = new QTableView;
table ->horizontalHeader()->setFrameShape(QFrame::HLine); // doesn't work
...
QVBoxLayout* layout1 = new QVBoxLayout;
layout1 ->addWidget(table);

QTabWidget* tab = new QTabWidget;
tab->setLayout(layout1);

QVBoxLayout* layout2 = new QVBoxLayout;
layout2 ->addWidget(tab);

QDialog* dialog = new QDialog;
dialog ->setLayout(layout2 );
dialog ->show();

[JonB]

@Lee908 said in The bottom border of table header is gone again:

QTabWidget* tab = new QTabWidget;
tab->setLayout(layout1);

I have no idea whether it relates to your issue, but you are not supposed to set a layout on a QTabWidget. It is a container widget, all you are supposed to do is addTab() for the various pages. They can/should be given a layout, but not the QTabWidget.

[Lee908]

@JonB said in The bottom border of table header is gone again:

It is a container widget, all you are supposed to do is addTab()

Make a small improvement on my test: create 2 table views with same data and format in a dialog. The left one is added into layout directly, the right one is added via a tab widget as your suggestion. The header bottom border is still missing in the right.

QTableView* table1 = new QTableView;
QTableView* table2 = new QTableView;
table1 ->horizontalHeader()->setFrameShape(QFrame::HLine); 
table2 ->horizontalHeader()->setFrameShape(QFrame::HLine); 
...
QVBoxLayout* layout = new QVBoxLayout;
layout ->addWidget(table1);

QTabWidget* tab = new QTabWidget;
tab->addTab(table2, "Bottom border is missing in header");
layout ->addWidget(tab);

QDialog* dialog = new QDialog;
dialog ->setLayout(layout);
dialog ->show();