how to disable right click on flash "swf"

You cannot disable the entire menu that I know of, but you can remove things like “zoom, quality, forward, back” etc..

You need to use the menu = fasle like below

<object>
	<param name="movie" value="file.swf" />
	<param name="menu" value="false" />
	<embed menu="false" src="file.swf" />
</object>