AHK or Other program to simulate Right Mouse Click and Hold

I come from playing TSW where I've become used to using targeting mode. I really do not like playing with keyboard turning.

Is there any program such as AHK or any other that can simulate a right mouse click and hold so I can turn mouse turning on and off?

If there is an AHK script for that can you please share it? Thanks.

I came up with this using T to use mouse turn mode the same as TSW. It works ok like this. The mode is suspended when using the mouse right click but I am just wondering if it can be toggled off and on with just the T key.

~T::
Click down right