Re: How does Pixie get the mouse position?
Re: How does Pixie get the mouse position?
- Subject: Re: How does Pixie get the mouse position?
- From: John MacDonnell <email@hidden>
- Date: Wed, 9 Jun 2004 09:08:07 +0200
On 9 Jun 2004, at 12:53 AM, Allan Odgaard wrote:
On 8. Jun 2004, at 22:32, John MacDonnell wrote:
I know I can set a Timer and get the [NSEvent mouseLocation]; but at
school someone taught me that polling must be avoided as often as
possible!
It certainly must, but I am afraid that in this case Apple leave you
no alternative :( Please do file a bug/enhancement report -- this
question has been raised a dozen times, and I can think of some very
useful applications of being able to intercept the mouse, but polling
would be very bad as it would probably drain the battery on
portables... not to mention that for one application I have in mind,
polling would simply not work, since I need *every* single mouse moved
event.
well I did try to set a timer which fires every 0.1 and the CPU of my
app shown by top is still it 0% so not bad... but still it a solution
which sucks and I don't like.
There must be a way to get mouse interrupts without messing with the
IOKit
I think about the Apple application called Pixie, it gets the mouse
cursor position as I want,
Pixie has _CGSCurrentInputPointerPosition as external symbol, which
would hint polling, and the UIElementExpector example from Apple also
sets up a timer and calls GetMouse() 10 times pr. second.
sad that Apple found this solution as well...
That said, I do not know much about Carbon events. When registering
for keys with application as target, they arrive even when the app is
inactive. But I do not know if the same holds for mouse events.
Yeah I thought the same, but it seems there are no functions to
register for mouse event as there are functions to register for hot
keys....
thanks for your help!
John
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