你如何关闭setDragImage

event.dataTransfer.setDragImage(null, 0, 0);

event.setDropAction(QtCore.Qt.IgnoreAction)

import java.awt.datatransfer.Transferable;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSource;

public class MyClass implements DragGestureListener {
    public void dragGestureRecognized(DragGestureEvent dge) {
        dge.startDrag(DragSource.DefaultMoveDrop, new Transferable() {
            // 实现 Transferable 接口的方法
        }, this);
    }
}

public class MyClass : Control, IDataObject {
    private void InitializeComponent() {
        // 初始化组件
    }

    private void MyControl_MouseDown(object sender, MouseEventArgs e) {
        DoDragDrop(this, DragDropEffects.Move);
    }
}