MAME will not register the middle mouse button

[gstav]

Hi guys!

I can't really get this... I have a aimtrak light gun, but it works as a mouse,
with 3 outputs connected and registers as Left,-, Middle,- and Rigth,-mouse button,
but in MAME ony my Left and Right mouse buttons can be configured in the ini, nothing records for the middle button.
Think I have a bit dated mame version like .176

Please help me 

[Titchgamer]

I dont remember having this issue, But have you enabled multi mouse?
Shouldn’t effect the buttons though I dont think.

[gstav]

Hi!

Thanks for the reply. Sadly, it just think this is for additional 2x mouse connected as inputs.
Do you (or anyone else) care to try to assign the middle mouse in say "alien 3" to credit1 and see if thats possible.

Would be great to see if there's something woring with my setup 

cheers

[Titchgamer]

My aim trak buttons register as joy buttons.

[gstav]

I see mate! 
Can't really do that as I have som ArcadePC-titles, like "Alien Extermination" and "Operation G.H.O.S.T."which is harcoded for mouse use as it seems.
But I guess I have to live with ony Right and Left mouse buttons in MAME then. Don't think I have any gun title using 3 buttons anyways 
Just thought it would be cool having the unused button for coin or start

[Titchgamer]

I still play alien extermination on my machine.

But my AT’s are seen as mice but the buttons always showed up as joy buttons.
Never really worked out why tbh.

[gstav]

Aah... Cool! Maybe I should have them be seen as game pad buttons as well then (this is done via the Aimtrac software). Think you select joystick or mouse.

Got to test asap 

[Titchgamer]

Good luck! Maybe, Been so long since I set them up now I dont remember :p

[gstav]

Seems like changing to latest MAME64 build made it.
Also a combo where I had lightgun_device to keyboard in the mame.ini hardcoded for some
titles got me in trouble. Tried setting it to mouse and all three buttons can now be set.
Don't know the difference in setting it to lightgun, but I'll try that too. happy camper now. 

[gstav]

[solved] solved this by change up to another build of MAME. Register middle mouse button now works in the config menu just fine