mouseMoveEvent and mousePressEvent is not executed after deleting the table item widget on which the mouse was initially pressed

Question

mouseMoveEvent and mousePressEvent is not executed after deleting the table item widget on which the mouse was initially pressed

I have a QTableView (inheritor) and it has methods mouseMoveEvent, mousePressEvent, mouseReleaseEvent.

I click on the widget item inside QTableView and start to move the mouse to the left on other items (selection).

At the same time, the first widget item I clicked is deleted.

And after that, the mouseMoveEvent and mouseReleaseEvent events in QTableView stop coming until I release the mouse button. How to fix it?

class MyView : public QTableView
{
    Q_OBJECT
public:
    MyView (MyModel* pModel, QWidget* pParent);

    QSize minimumSizeHint() const override;
    QSize sizeHint() const override;

private:
    void mouseMoveEvent(QMouseEvent* pEvent) override;
    void mousePressEvent(QMouseEvent* pEvent) override;
    void mouseReleaseEvent(QMouseEvent* pEvent) override;

    QPointer<MyModel> model;
};

....

setMouseTracking(true);
setSelectionMode(QAbstractItemView::ExtendedSelection);
setSelectionBehavior(QAbstractItemView::SelectItems);

I tried to forward the button pressing event from the widget item to the view when pressed on the widget item. And also during its destruction.

I also tried to set the focus on the view at the time of the destruction of the widget item

All this did not lead to a positive result.

Answer 1

Instead of subclassing QTableView, subclass QTableWidget. The below code demonstrates that mouse move and mouse release events are still executed after a cell is deleted.

#include <QApplication>
#include <QTableWidget>
#include <QTableWidgetItem>
#include <QMouseEvent>
#include <QDebug>

class CustomTableWidget : public QTableWidget
{
public:
    CustomTableWidget(QWidget* parent = nullptr) : QTableWidget(parent) {}

protected:
    void mouseMoveEvent(QMouseEvent* event) override
    {
        qDebug() << "Mouse Move Event";
        QTableWidget::mouseMoveEvent(event);
    }

    void mouseReleaseEvent(QMouseEvent* event) override
    {
        qDebug() << "Mouse Release Event";
        QTableWidget::mouseReleaseEvent(event);
    }
};

int main(int argc, char* argv[])
{
    QApplication app(argc, argv);

    CustomTableWidget table;
    table.setColumnCount(5);
    table.setRowCount(5);

    for (int row = 0; row < 5; ++row)
    {
        for (int col = 0; col < 5; ++col)
        {
            QTableWidgetItem* item = new QTableWidgetItem(QString("Item %1-%2").arg(row).arg(col));
            table.setItem(row, col, item);
        }
    }

    table.show();

    // Simulate widget item deletion (e.g., when a cell is clicked)
    QTableWidgetItem* itemToDelete = table.item(1, 1);
    if (itemToDelete)
    {
        delete itemToDelete;
    }

    return app.exec();
}