21 lines
648 B
OCaml
21 lines
648 B
OCaml
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(* LablTk4 Demonstration by JPF *)
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(* First, open this modules for convenience *)
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open Tk
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(* initialization of Tk --- the result is a toplevel widget *)
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let top = openTk ()
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(* create a button on top *)
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(* Button.create : use of create function defined in button.ml *)
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(* But you shouldn't open Button module for other widget class modules use *)
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let b = Button.create text: "Hello, LablTk!" top
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(* Lack of toplevel expressions in lsl, you must use dummy let exp. *)
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let _ = pack [coe b]
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(* Last, you must call mainLoop *)
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(* You can write just let _ = mainLoop () *)
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(* But Printexc.print will help you *)
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let _ = Printexc.print mainLoop ()
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