I'm looking to create dynamic menus with multiple options, and would allow multiple selections.

For example, mousing over an object (let's say a black circle of rad 1), a menu would popup at MousePosition[] with two options of "red" and "5". Selecting red would create a new circle, red with rad1, and selecting both would give a red circle of rad 5.

How would I create temporary/dynamic menus similar to the standard right-click (disappears after clicking away), except with multi-selection?

Edit: I got carried away with my end-goal example. All I am wondering is if Panel is the correct function to use here with multiple checkboxes (the documentation examples did not have what I expected).

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Have a look at this thread, this may get you started. If I have time, I will port that answer here as an answer. –  Leonid Shifrin Aug 21 '12 at 16:32
THanks Leonid, I'll look through that –  Twoday Aug 21 '12 at 16:35

Something like:

Panel@DynamicModule[{color = Gray, radius = 1, ww = {}},
Mouseover[
Graphics[{Dynamic@color, Disk[{0, 0}, Dynamic@radius], Gray, Circle[{0, 0}, 3]}],
Dynamic[Panel[CheckboxBar[
Dynamic[ww, {(ww = #; radius = If[MemberQ[ww, 1], 2, 1];
color = If[MemberQ[ww, 2], Red, Gray]) &}],
{1 -> "radius = 2", Delimiter, 2 -> "color = Red"},
Appearance -> "Vertical", Appearance -> Small]]],
ImageSize -> All]]


Screenshots:

view when mouse is over the panel:

views when mouse is off the panel:

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Ahhh beautiful ~~Thank you. Could you explain why there are two Panels in your code? I believe the second Panel creates the panel with the checkboxbar, but what does the first line (Panel@DynamicModule) do? edit: oh wait, one of them makes the circle...? –  Twoday Aug 21 '12 at 22:21
@Twoday, the outer panel is not essential. I used it to get the screenshots -- to crop the prt-scr image to appropriate size. –  kguler Aug 21 '12 at 22:36