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You can achieve almost the same thing by saving coordinates. Place an image in Mathematica, click on it, and choose the "coordinates tool" form the little popup menu. Click on as many points as you want (say the upper left and lower right of a bounding box, if that's what you want). When done, choose "copy coordinates". Then paste them into a list.


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It's not too hard. Manipulate[ vBwGFunc[vAwGIn, psiIn, vBwBIn] // MatrixForm, {{vAwGIn, vAwG[[1]], "A"}, Thread[Rule[vAwG, vAwG // MatrixForm]]}, {{psiIn, psi[[1]], "ψ"}, psi}, {{vBwBIn, vBwB[[1]], "B"}, Thread[Rule[vBwB, vBwB // MatrixForm]]}]


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Does this do what you need? Grid[{{"Input a number"}, {InputField[ Dynamic[field1, If[NumberQ[#], field1 = #, field1 = Null] &], Expression, ContinuousAction -> True]}}]



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