Question

This is an example of what I’d like to do: Do all the display in the control area of Manipulate itself:

Manipulate[

 p = Framed@
   Plot[Sin[x],{x, -y, y},ImageSize->300,Background-> White, ImagePadding -> 20];
   {},

 Grid[{
   {Control[{{y, N@Pi/2, "y"}, -Pi, Pi, Appearance -> "Labeled"}]},
   {Dynamic@p}
   }],

 ControlPlacement -> Left,
 Alignment -> Center,
 ImageMargins -> 1,
 FrameMargins -> 1,
 ContentSize -> {0}
 ]

The problem is that M adds a scroll bar automatically:

The help says

If ContentSize specifies a content area that does not completely fit 
the contents, then unless specified otherwise with AppearanceElements, 
functions like Manipulate display a resize area, as well as scrollbars 
when necessary.

The question is, how to use AppearanceElements to remove this scrollbar?

(I wish sometimes that M help is not so short and brief when explaining something).

In the above, notice it says: unless specified otherwise with AppearanceElements,
but I was not able to find out what this means. What does ‘otherwise’ is
supposed to mean?

The closest I got is by adding AppearanceElements -> "" to the above. So the new
version now becomes

Manipulate[
 p = Framed@
   Plot[Sin[x], {x, -y, y}, ImageSize -> 300, Background -> White, 
    ImagePadding -> 20];
 {},
 Grid[{
   {Control[{{y, N@Pi/2, "y"}, -Pi, Pi, Appearance -> "Labeled"}]},
   {Dynamic@p}
   }],

 ControlPlacement -> Left,
 Alignment -> Center,
 ImageMargins -> 1,
 FrameMargins -> 1,
 ContentSize -> {0},
 AppearanceElements -> "" (*added this *)
 ]

But notice that the size is not quite correct to the right still, it should be more tight,
and I also lost the ‘+’ that used to be there. I have to keep that.

So, I think what I need is just to find what the element name for ‘+’ is, so I can use
the correct AppearanceElements -> "correctNameHere" and I am hoping that this
will do the right thing. (I tried “Close” but that did not do it, I lost the ‘+’ as well)

I just could not find what that ‘+’ element name is. Any one knows?

Here are the places to find more information on this:

http://reference.wolfram.com/mathematica/ref/Manipulator.html

http://reference.wolfram.com/mathematica/ref/ContentSize.html

So, the question is: How to completely remove the scrollbar effect shown
above, but at the same time keep the ‘+’ in the top right corner.

thanks

Update 2

Thanks to the answers below, here is a screen shot of the result.

Manipulate[
 p = Framed@
   Plot[Sin[x], {x, -y, y}, ImageSize -> 300, Background -> White, 
    ImagePadding -> 20];
 {}, Grid[{{Control[{{y, N@Pi/2, "y"}, -Pi, Pi, 
      Appearance -> "Labeled"}]}, {Dynamic@p}}], 
 AppearanceElements -> "BookmarksButton", ControlPlacement -> Left, 
 Alignment -> Center, ImageMargins -> 1, FrameMargins -> 1, 
 ContentSize -> {0}, Alignment -> Center]

I am happy with it. The small white line showing at the top corner seems to
be a side-effect of this. Will have to live it I guess.

Answer 1

Manipulate[
 p = Framed@
   Plot[Sin[x], {x, -y, y}, ImageSize -> 300, Background -> White, 
    ImagePadding -> 20];
 {}, Grid[{{Control[{{y, N@Pi/2, "y"}, -Pi, Pi, 
      Appearance -> "Labeled"}]}, {Dynamic@p}}]
 , AppearanceElements -> "ManipulateMenu", ControlPlacement -> Left, 
 Alignment -> Center, ImageMargins -> 1, FrameMargins -> 0, 
 ContentSize -> {0} ]

Setting FrameMargins->0 gets rid of white lines (on a Mac anyway) but still leaves the Frame lines there. Frame->False doesn’t change this. It appears that Manipulate wants to draw a content area no matter what. The AppearanceElements option seems to be incompletely/poorly documented. The following are valid options, though there may be others I do not know of:

{"ContentResizeArea", "HideControlsButton", "ManipulateMenu", "SnapshotButton", 
"ResetButton", "UpdateButton", "BookmarksButton", All, None}