[program-l] Re: a program to adjust the backlight:hints?
- From: Doug Lee <dgl@xxxxxxxx>
- To: program-l@xxxxxxxxxxxxx
- Date: Tue, 23 Dec 2008 00:44:50 -0500
Shouldn't, unless it's a huge magnet maybe. I of course can't
promise, but maybe someone else on here knows more about how
susceptible a hard drive is to an external magnetic field. I'm sure
its being in a sealed steel case helps; I just don't know exactly how
much.
On Mon, Dec 22, 2008 at 03:21:37PM -0800, Tyler Littlefield wrote:
hello,
this may work--I think the harddrive is in the front left of the laptop,
not quite sure. Will the magnet mess up what's on the hd if that is the
case?
----- Original Message -----
From: "Doug Lee" <dgl@xxxxxxxx>
To: <program-l@xxxxxxxxxxxxx>
Sent: Monday, December 22, 2008 2:11 PM
Subject: [program-l] Re: a program to adjust the backlight:hints?
>Some laptops detect when the lid is closed magnetically: There's a
>little magnet in the top edge of the lid and a sensor corresponding to
>it on the laptop itself, so that when the lid closes, the magnet comes
>very close to the sensor and is detected, and the screen is shut off.
>
>If your laptop does this, you can probably shut the screen off simply
>enough by putting a refrigerator magnet, or a slightly larger one,
>near the sensor. I do this on my Sony Vaio all the time. I note
>though that the hard drive in my Vaio is near the back of the laptop,
>far from the magnet sensor.
>
>If you don't know if your laptop uses this trick, try these things to
>find out:
>
>1. If there's a physical latch that you have to operate to open the
>lid, you probably don't have a magnetic system.
>
>2. Get a small fridge magnet, open the lid of the machine, and slowly
>run the magnet along the top edge, farthest from the laptop, on the
>front side (facing you). If you have a magnet in there, your fridge
>magnet will want to stop where it is. If you find it, mark the spot
>with your finger, get rid of the fridge magnet for a moment, and
>slowly close the lid with your finger on the magnetic spot on the lid.
>Where your finger meets the main laptop case should be where the
>sensor is. Then, you can try using the little fridge magnet to shut
>off the screen when the lid is wide open.
>
>On Mon, Dec 22, 2008 at 08:02:25AM -0800, Tyler Littlefield wrote:
> will do. I know there are fn keys, but in the daylight I never know if
> they're working. I need to find some way of writing the driver and then
> interfacing with it.
>
>
>
> ----- Original Message -----
>
> From: [1]tribble
>
> To: [2]program-l@xxxxxxxxxxxxx
>
> Sent: Monday, December 22, 2008 6:56 AM
>
> Subject: [program-l] Re: a program to adjust the backlight:hints?
>
> Yes, and I neglected to think of saving battery life...
>
> I wouldn't mind a way of turning off my screen.
>
> Let me know if you get something working.
>
> --le
>
>
>
> ----- Original Message -----
>
> From: [3]Tyler Littlefield
>
> To: [4]program-l@xxxxxxxxxxxxx
>
> Sent: Monday, December 22, 2008 9:25 AM
>
> Subject: [program-l] Re: a program to adjust the backlight:hints?
>
> I'd have to tape it up there. If i were to ever need sited assistance,
> it'd need a total removal of the cardboard, then retaping it up there.
>
>
>
> ----- Original Message -----
>
> From: [5]tribble
>
> To: [6]program-l@xxxxxxxxxxxxx
>
> Sent: Monday, December 22, 2008 4:21 AM
>
> Subject: [program-l] Re: a program to adjust the backlight:hints?
>
> Hey Tyler --
>
> Not to state the obvious, but why not just cover the screen with a
> piece of cardboard?
>
> --le
>
>
>
> ----- Original Message -----
>
> From: [7]Tyler Littlefield
>
> To: [8]program-l@xxxxxxxxxxxxx
>
> Sent: Monday, December 22, 2008 6:18 AM
>
> Subject: [program-l] a program to adjust the backlight:hints?
>
> Hello list,
>
> I've dug through the windows API in the hopes of finding this, but
> think it's going to end up having to happen at the driver level.
>
> I'll explain my problem a bit.
>
> I'm totally blind, with the exception of light and dark.
>
> Right now, I'm using my laptop and it's dark outside, and there aren't
> any lights on in my room, so my laptop screen is outputting a ton of
> light.
>
> I have to keep the screen up, or I can angle it down, but not far
> enough that my fingers hit it when I'm typing, which means that I still
> see a lot of the light.
>
> It's problematic because though I can handle it for a bit, that light
> constantly shining right in my eyes tends to give me a bit of a
> headache.
>
> I'd rather not resort to carying around a USB keyboard, so I decided to
> make a program that I could use to adjust the backlight.
>
> That said, I'm really lost as to where to go.
>
> I've got no clue about the first thing when it comes to driver
> development.
>
> First, I need a testing environment so granny doesn't have to keep
> helping me reformat my computer every time I get the BSOD.
>
> Second, I need to figure out how to adjust the backlight, and then
> somehow interface a higher level program with the driver so that I can
> control this.
>
> Help would be greatly appriciated, this light is driving me crazy.
>
> TIA,
>
>References
>
> 1. mailto:lauraeaves@xxxxxxxxx
> 2. mailto:program-l@xxxxxxxxxxxxx
> 3. mailto:tyler@xxxxxxxxxxxxx
> 4. mailto:program-l@xxxxxxxxxxxxx
> 5. mailto:lauraeaves@xxxxxxxxx
> 6. mailto:program-l@xxxxxxxxxxxxx
> 7. mailto:tyler@xxxxxxxxxxxxx
> 8. mailto:program-l@xxxxxxxxxxxxx
>
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