XToolkit.java 文件源码

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

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