Keyboard button conflict

[Chiefcob]

When playing 2 player games such as mk3 or street fighter I seem to be having problems with keys being pressed at the sometime and the game being interrupted with a window about hot keys anyone know how to solve this?

[mameshane]

it's not the sticky keys one is it? from pressing the shift key 5 times quickly?

you can disable it in control panel/ease of access center

[Chiefcob]

Have already disabled that one thanks.

[Yourname942]

you should change the minimize/maximize button to something that is almost never pressed, like printscreen or something.

Edit: I had the same issue on the cab I built for my brother's friend's 4player CP.

[BadMouth]

Don't use the default MAME keys, they suck bad. 

If you absolutely need the inputs on your encoder that post CTRL, ALT & SHIFT, map them to coin or player.
Those are much less likely to be pressed in conjunction with other buttons.

If you have an ipac, you don't even have to rewire anything, just reprogram those inputs to something else.
If you have an x-arcade, you can reprogram the buttons, but you'll have to press the button on the back to load them every time you turn on the computer.
I'm not a big fan of the Key Wiz uploader concept, so I just don't use those inputs or use them for administrator buttons.

Solves this problem and many problems you are going to have when you get into other emulators.
Change it now before you get too deep into mapping controls for individual games and setting up other emulators.

I have no idea why people refuse to switch away from the crappy default keys. 

[RandyT]

I have no idea why people refuse to switch away from the crappy default keys. 

As far as MAME goes, it was done this way for a very good reason.  It speaks volumes about their understanding of what was necessary to make the user experience as good as it could be.

With a standard USB keyboard, there is a 6 simultaneous keypress limit.  But there is one group of keys which are not counted in that group, and they are LEFT CONTROL, RIGHT CONTROL, LEFT ALT, RIGHT ALT, LEFT SHIFT, RIGHT SHIFT, MENU and WINDOWS Keys.  These are handled by a bitmapped report, so are actually even somewhat more efficiently handled than others.

PS/2 keyboards don't have this limitation, but most PS/2 encoders, like the KeyWiz, will use these defaults to maintain compatibility with MAME defaults, in order to make configuration a bit simpler.

The keys they decided to use aren't "crappy".  It's just programmers who don't understand these things, and don't properly support their use, who make it seem that way

RandyT