Diasble Drag of Images and Links

Tiddlywiki does not allow to drag a link for example from recent tab and drop into itself!
I have a list of image as below

<a class="myclass"> 
<$image source="motovun.jpg"/>
</a>

How can I have the same behavior for my own list? I mean disable dragging from this kind of links?

The dragging of images is implemented natively by the browser, which means that we don’t have the information to be able to detect that a drag came from the same window.

I think the best one can do is to prevent images from being dragged at all, which can be done in CSS like this:

img {
	pointer-events: none;
}

Thank you Jeremy!
It works for me!