Qt - Clearing QTableView's contents [closed]

Question

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.

---

This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.

Closed 9 years ago.

Improve this question

I am working in Qt 4.7, and have a dialog containing (among other, unrelated things) a QTableView and a QButton. When the QButton is clicked, it must clear all the data from the QTableView. I am unsure on how to accompish this. I've looked around online for a while, but haven't found anything too helpful. Based on what I found here, I tried this:

void MyClass::on_myButton_clicked() { myTableView->model()->clear(); }

However, this gave the following error:

error: C2039: 'clear' : is not a member of 'QAbstractItemModel'

Is there another way to do this that I am accidentally overlooking? Thanks!

Answer 1

The function myTableView->model() returns a QAbstractItemModel which does not contain the clear() method. You should call clear method of your model. If you have a model like:

QStandardItemModel * model= new QStandardItemModel( 2, 4 );

Calling clear should delete all data from the model erasing the view as a consequence as it is provided to show data in the associated model:

model->clear();

Answer 2

I would reset the model (if you do not need the data in the model later). Subclass your model (if it is a custom one) and implement a slot like;

void clear(){
   this->beginResetModel();
   ... // clear the content of your model here
   this->endResetModel();
{

Just check QAbstractItemView::reset().