Tablewidget not accepting drop .

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hello , i have return code to perform drag and drop between two tablewidget . i am not getting what mistake i have did, here is my code

@#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QListWidget>
#include <QMouseEvent>
#include <QMimeData>
#include <QDrag>
#include <QDebug>
#include <QTabWidget>
#include <QTableWidget>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

private:
Ui::MainWindow *ui;
private slots:
void on_itemchanged();
};
class ProjectListWidget :public QTableWidget
{
Q_OBJECT

public:
ProjectListWidget(QWidget *parent = 0);

protected:
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void dragEnterEvent(QDragEnterEvent *event);
void dragMoveEvent(QDragMoveEvent *event);
void dropEvent(QDropEvent *event);

private:
void performDrag();
QPoint startPos;

};

#endif // MAINWINDOW_H
@

@#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
ProjectListWidget *tabel=new ProjectListWidget(ui->widget);
tabel->setColumnCount(2);
tabel->setRowCount(2);
ProjectListWidget *tabel2=new ProjectListWidget(ui->widget_2);
tabel2->setColumnCount(2);
tabel2->setRowCount(2);
}
ProjectListWidget::ProjectListWidget(QWidget *parent)
: QTableWidget(parent)
{
setAcceptDrops(true);

}
void ProjectListWidget::mousePressEvent(QMouseEvent *event)
{
qDebug()<<"mouse press";
QWidget::mousePressEvent(event);
if(event->button() == Qt::LeftButton)
{
// if(startPos)
// delete startPos;
//startPos = new QPoint(event->pos());
}
// if (event->button() == Qt::LeftButton)
// startPos = event->pos();
//ProjectListWidget::mousePressEvent(event);
}
void ProjectListWidget::mouseMoveEvent(QMouseEvent *event)
{
qDebug()<<"mouse move event";
if (event->buttons() & Qt::LeftButton) {
int distance = (event->pos() - startPos).manhattanLength();
if (distance >= QApplication::startDragDistance())
performDrag();
}
QTableWidget::mouseMoveEvent(event);
}
void ProjectListWidget::performDrag()
{
qDebug()<<"perform drag";
QTableWidgetItem *item = currentItem();
if (item) {
QMimeData *mimeData = new QMimeData;
mimeData->setText(item->text());

    QDrag *drag = new QDrag(this);
    drag->setMimeData(mimeData);
    QString fileName = "C:/Users/teclever/Desktop/qt-logo.jpg";
    QPixmap pic (fileName);
    drag->setPixmap(pic);
    if (drag->exec&#40;Qt::CopyAction&#41; == Qt::CopyAction&#41;
    {
    }
}

}
void ProjectListWidget::dragEnterEvent(QDragEnterEvent *event)
{
qDebug()<<"drag enter";
ProjectListWidget *source =
qobject_cast<ProjectListWidget *>(event->source());
if (source && source != this) {
event->setDropAction(Qt::CopyAction);
event->accept();
}
}
void ProjectListWidget::dragMoveEvent(QDragMoveEvent *event)
{
qDebug()<<"drag move event";
ProjectListWidget *source =
qobject_cast<ProjectListWidget *>(event->source());
if (source && source != this) {
event->setDropAction(Qt::MoveAction);
event->accept();
}
}
void ProjectListWidget::dropEvent(QDropEvent *event)
{
qDebug()<<"drop event";
ProjectListWidget *source =
qobject_cast<ProjectListWidget *>(event->source());
if (source && source != this) {
QString plaintext= event->mimeData()->text();
event->setDropAction(Qt::MoveAction);
event->accept();
}
}

void MainWindow:: on_itemchanged()
{
qDebug()<<"on_itemchanged";
}

MainWindow::~MainWindow()
{
delete ui;
}
@

please correct me in my code .

jrondanv

better use a QTableView.
you should to set a model with:
virtual void QTableView::setModel(QAbstractItemModel * model)
and then in your class model QAbstractItemModel override this functions:
virtual QStringList QAbstractItemModel::mimeTypes() const
virtual QMimeData * QAbstractItemModel::mimeData(const QModelIndexList & indexes) const
,this give you a format of the data that you can drag and drop.