Setting white point in LR

I'm almost sure I'm missing something but I cannot find a solution. I'm using LR (currently 2.2) for quite a while (since 1.2) but I simply cannot find an easy, user friedly and predictable way how to set a white point of edited pictures.
In PS, CR, DPP and most other editing SW and RAW processors, there two typical easy tools how to set the white point.
1) a white point picker which (when used) defines a desired tone as white and the relevant SW then redistributes the tones accordingly;
2) in "levels" or "curves" dialog (or their equivalents it is possible to move the "White level" treshold below which the remaining tones are redistributed accordingly - the iterface varies (sometimes it is the border of the histogram or curve diagram that can be moved (DPP), sometimes it is the slider in histogram or curve diagram setting this limit
botw ways generally lead to the same and quite uniform result. I.e. I'm usually able to get almost identical result by setting white point in PS, DPP, CR, .... and other SW by such simple operation when working over identical picture data.
However in LR it is virtually impossible to achieve similar result in LR. No white point picker, no slider enabling setting the white limit, no chance to move borders in the histogram chart. The only available tools for this purpose are
"Exposure" and "Brightness". None of them providing for the desired functionality alone - their combination giving sometimes acceptable but hardly predictable results (definitely not as predictable as achieved e.g. in PS by simple and single move of white limit slider in "level" dialogue or equivalent step in CR.
Do I really miss something important (I hope so) in this respect or is LR completly lacking this (for me really core/basic) functionality present in all other photo and RAW editting SW I know - even from Adobe?
thanks

I agree with the original poster - I find it troublesome to set the white point in an image. In a situation where a traditional (PS, Aperture) levels control would make it convenient to push a particular tone to white, I find myself going back and forth between exposure and the tone curve a fair amount. Another description of what I want, effectively, is a 'recovery' slider that goes up as well as down.
(See end of post for replies to a few specific points.)
An example:
Here is the original image, with its histogram and tone curve - black to middle gray:
I want to push the small hatch/door to white, but that also overexposes my middle grays (I haven't yet touched the tone curve):
So now I go to the tone curve, and pull down both darks and lights:
However, at this point I've lost my whites (they are not quite clipped any more); and probably more importantly, since the tone curve is at the extreme low values, I have little working room or control.
Rather than working together or providing complementary functions, in this case exposure and the tone curve, to me, seem to be fighting; it requires back-and-forth to get the desired effect.
(To be clear, most of the time - that is, when my white point starts out more or less where I want it - being able to drag the histogram and smoothly-transitioned segments of the tone curve is brilliantly easy and useful. It's specifically the exposure control's nonlinear behavior/effect that I dislike, as it makes it difficult to adjust near-white tones.)
Responding to specifics:
> Also, hold the ALT key (David Edwards)
Cool! (However, not a fix for this issue.)
> the controls themselves are not linear (Lee Jay)
> attempts to preserve highlights (Lee Jay)
> the exposure slider is almost exactly equivalent to the white point slider in Photoshop's levels/curves (Joa V. L.)
I think this is the root of the issue, for me - the exposure control is being intelligent in a way to protect hilights, which is counter to my intent. My experience leads me to disagree strongly with Joa's comment (though I would be very happy to discover I was wrong) - my problem is specifically that adjusting exposure up (brightening the image with exposure) affects tones less, the brighter they are.
> I need to decrease the Brightness (Henry_Deer)
> you may need to generate a higher-contrast tone curve and work with that (Lee Jay)
The brightness adjustment seems analogous to my use of the tone curve, though it's an alternate approach I haven't tried. However, both seem to suffer from the 'several rounds' problem.
Edited to reply to a few specific points

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Setting White Points in Camera Raw

When setting white points in Adobe Camera Raw, while holding down Alt (on a PC), are the red marks what I should look for? Because white marks also appear? Which ones are relevant for the white point?

ACR doesn’t work that way. There is an eyedropper for the overall white-balance that you can set by clicking on a relatively bright, neutral area, but there aren’t black and white-point eyedroppers. But, what is clipped black or white is determined by the output colorspace you have set at the bottom and you can get some idea of what will be clipped black and white by turning on the clipping indicators and watching for the areas you’d be eye-droppering on (the black and white patches in your grayscale) to start showing the clipping color overlay for black and white, but any further toning adjustments will move data in and out of what is darker than black and lighter than white so what is clipped for output will change as you fiddle with the various toning sliders.
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Hello all,
I'm taking shots of some furniture I made. I get the shot all set up and the exposure correct for what I want, then I take an 'extra' shot with a gray and a white calibration card in the scene. Now I have two identical shots except that one has the calibration cards. My question is: how to I select the white (and gray) levels from the calibration shot and then use that data to set the white (and gray) levels in the good shot. I had done this many years ago in CS3, but I don't remember the process. Any help is appreciated.
Thanks,
Kevin H.

Kevin,
this is one possible workflow:
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Save As *.acv
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If required convert Lab to RGB.
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http://www.fho-emden.de/~hoffmann/camcal17122006.pdf
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Language problem:
Is a ColorChecker a card or a chart?
Edited:
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it's a chart
Edited:
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MB,
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Dear friends,
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ACR doesn’t work that way. There is an eyedropper for the overall white-balance that you can set by clicking on a relatively bright, neutral area, but there aren’t black and white-point eyedroppers. But, what is clipped black or white is determined by the output colorspace you have set at the bottom and you can get some idea of what will be clipped black and white by turning on the clipping indicators and watching for the areas you’d be eye-droppering on (the black and white patches in your grayscale) to start showing the clipping color overlay for black and white, but any further toning adjustments will move data in and out of what is darker than black and lighter than white so what is clipped for output will change as you fiddle with the various toning sliders.
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Hi BBurgess!
Unfortunately, it sounds like you may have a service issue on your hands. While our QuickStart guide provides details on installing the cartridges in their respective slots, putting those catridges in the wrong position may cause an internal issue with the Canon PiXMA MG3222.
We recommend contacting our Technical Support group directly via this Contact Us link. Our Technical Support group can provide you with all available service options.
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The last post by OP might have closed this thread, but given the relative lack of activity on this and LR2 forums (summertime?) - I'll go a little deeper.
i White point
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Setting white point in LR

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