dynamic - In InputField, how to prevent Shift-Return from generating a new cell?

When running the following in a notebook (not a deployed CDF file), it can sometimes be annoying that accidentally pressing Shift-Return breaks out of the user interface:

Panel@DynamicModule[{input = ""}, InputField[Dynamic[input], String]]

I would like to know if one can (programmatically) prevent such a cell from being "evaluated" when Shift-Return is pressed, so that the user stays in the InputField instead of being thrown out of it while seeing a new generated cell appear.

Answer

If you notice Mathematica Documentation Center search field is kind of the same thing. And search window from Ctrl-F too. It uses a similar concept to what I'll show. Important thing to know is that EventHandler can track commands from the Mathematica menu. There is an undocumented option HandleShiftReturn and here is a trick I learned from FW:

DynamicModule[{x = ""}, 
  Column[{
    EventHandler[
      InputField[Dynamic[x], String], 

      {{"MenuCommand", "HandleShiftReturn"} :> {},
       {"MenuCommand", "EvaluateCells"} :> {}} (*edit by Kuba, handles Keypad Enter*)
    ], 
    Dynamic[x]
   }]
]

enter image description here

Return works, but Shift-Return does not.

Comments

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