How to change drag cursor by dragging in Qt? - c++

Question

I have a widget that accepts drop. The object which is dragged in this example can be any pdf or text file. The requirement is when the dragged object goes inside my widget, the cursor should be changed into another form.
I did some search here, and there is a way to do it setDragCursor, but this function is of QDrag. I did not create the dragged widget myself and from dropEnterEvent and dropMoveEvent I don't know how to change the cursor.
DragWidget.h
#ifndef DRAGWIDGET_H
#define DRAGWIDGET_H
#include <QFrame>
#include <QDragEnterEvent>
#include <QDragMoveEvent>
class DragWidget : public QFrame
{
public:
DragWidget(QWidget *parent = nullptr);
protected:
void dragEnterEvent(QDragEnterEvent *event) override;
void dragMoveEvent(QDragMoveEvent *event) override;
};
#endif // DRAGWIDGET_H
DragWidget.cpp
#include "dragwidget.h"
#include <QMimeData>
#include <QDebug>
DragWidget::DragWidget(QWidget *parent) : QFrame(parent)
{
setMinimumSize(300, 300);
setFrameStyle(QFrame::Sunken | QFrame::StyledPanel);
setAcceptDrops(true);
}
void DragWidget::dragEnterEvent(QDragEnterEvent *event)
{
const QMimeData *mimeData = event->mimeData();
if ( mimeData->hasText() || mimeData->hasFormat( "application/json" ) )
{
qDebug()<<mimeData->text();
}
}
void DragWidget::dragMoveEvent(QDragMoveEvent *event)
{
event->acceptProposedAction();
}
MainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "dragwidget.h"
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private:
Ui::MainWindow *ui;
DragWidget *m_dragWidget=nullptr;
};
#endif // MAINWINDOW_H
MainWindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{
ui->setupUi(this);
m_dragWidget = new DragWidget(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
With the code above, the mouse cursor off course does not change
Do you guys have any idea about this?