AHK - Submit GUI with {Enter}

This is an example of how you can use a hidden button control with the Default option set in order to submit a gui simply by pressing enter.

Gui, Add, Edit, vMyEdit
; Setting x and y prevents the button from changing the size
; of the GUI window when using autosize
Gui, Add, Button, Default Hidden x0 y0 gSubmit
Gui, Show, AutoSize
Return

Submit:
   Gui, Submit
   MsgBox Value in MyEdit was %MyEdit%
ExitApp

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