Getting compilation errors

[Qt Enthusiast]

class myQtreeWidget : public QTreeWidget {

public:
myQtreeWidget() {};
int rowHeight(QModelIndex& index) { return QTreeView::rowHeight(index);}

};

myQtreeWidget* treeWidget = new myQtreeWidget();
QModelIndex index = treeWidget->indexAt(QPoint(0,0));
int h = treeWidget->height();

int noOfRows = treeWidget->height()/treeWidget->rowHeight(index);

Please help me correcting the compilation errors

[aha_1980]

@Qt-Enthusiast said in Getting compilation errors:

Please help me correcting the compilation errors

Which error?

[SGaist]

Hi,

rowHeight is a const method and more important it's not virtual.

[Qt Enthusiast]

how to get rowHeigt of first row in QtreeWidget

[JonB]

@Qt-Enthusiast
https://doc.qt.io/qt-5/qtreeview.html#rowHeight

int QTreeView::rowHeight(const QModelIndex &index) const [protected]

Returns the height of the row indicated by the given index.

So pass it the QModelIndex of a cell in the first row.

Note that this is a protected function. This means you will only be able to access if you derive your own class from QTableWidget, not if you just use that directly.

If that is not convenient for you, you might use QRect QTreeView::visualRect(const QModelIndex &index) const (https://doc.qt.io/qt-5/qtreeview.html#visualRect) instead. This also would indicate whether an item is visible or not, which I think you asked about in another similar post.