Creating a vertical scrollable/dragging container with buttons

[ericguo]

Hi,

What we would like to do in a game UI is that something like a vertical scrollable/dragging table which lists items e.g. some weapons.

So we create a container, then add a large image as background. And then add some items on top of background. The background image is draggable like the dragging example http://pixijs.github.io/examples/index.html?s=demos&f=dragging.js&title=Dragging and the items are set up with click event.

Thing works great except if you mouse down on a clickable item and try to drag the table. It fails since the mouse down event of the background image is not fired.