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Re: receiving global keyDown events
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Re: receiving global keyDown events


  • Subject: Re: receiving global keyDown events
  • From: Ryan Poling <email@hidden>
  • Date: Wed, 29 Jun 2005 13:07:11 -0700

Okay, thanks, this looks promising.

-Ryan

On Jun 29, 2005, at 11:02 AM, Dave Camp wrote:

You want to be looking at the HID Manager. You can install event queues on keys and get notifications on value changes.

<http://developer.apple.com/documentation/DeviceDrivers/Conceptual/ HID/index.html>

Some (most) keyboards have a special HID Element (Usage -1 I think) that you can put a single event queue on and get events for all key presses.

Dave

On Jun 29, 2005, at 9:37 AM, Ryan Poling wrote:


Thanks guys, but I don't think that will work. I want to know when *any* key on the keyboard is pressed - I don't care what the keys are, I just need the timing. The purpose of this if you're curious is to have the program make a key click sound when keys are pressed. OS X has something like this built in, but you can only turn it on when "slow keys" are enabled under the Universal Access system preference pane. I want click sounds all the time but without slow keys.

Any other ideas?

Thanks,

-Ryan


On Jun 28, 2005, at 4:27 PM, Daniel Jalkut wrote:


Register for the specific keystrokes you are interested in with RegisterEventHotKey. Search the archives for that function name for more information.

Daniel



On Jun 29, 2005, at 2:05 AM, Nathan Day wrote:



What you want is Hot Keys, you can get this through carbon or there are at least two wrapper classes including the one on my web site.

On 29/06/2005, at 3:07 AM, Ryan Poling wrote:



I'm trying to write a little Cocoa app which will be able to see all keyDown events - even when it's not in the foreground. I've been playing around with first creating a global floating window, and although I've managed to do this, I only receive keyDown events when my window is in the front.



Nathan Day email@hidden http://homepage.mac.com/nathan_day/




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References: 
 >receiving global keyDown events (From: Ryan Poling <email@hidden>)
 >Re: receiving global keyDown events (From: Nathan Day <email@hidden>)
 >Re: receiving global keyDown events (From: Ryan Poling <email@hidden>)
 >Re: receiving global keyDown events (From: Dave Camp <email@hidden>)

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