WToolkit.java 文件源码

@Override
public <T extends DragGestureRecognizer> T
    createDragGestureRecognizer(Class<T> abstractRecognizerClass,
                                DragSource ds, Component c, int srcActions,
                                DragGestureListener dgl)
{
    final LightweightFrame f = SunToolkit.getLightweightFrame(c);
    if (f != null) {
        return f.createDragGestureRecognizer(abstractRecognizerClass, ds, c, srcActions, dgl);
    }

    if (MouseDragGestureRecognizer.class.equals(abstractRecognizerClass))
        return (T)new WMouseDragGestureRecognizer(ds, c, srcActions, dgl);
    else
        return null;
}