LTK: removing character echo in Entry widget

Question

Is there anyway to have remove echoing of characters being typed in the Entry widget of LTK?

For the CLI interface I use the c-string function (alien routine)

(sb-alien:define-alien-routine getpass sb-alien:c-string (prompt sb-alien:c-string))

Not quite sure how to apply this in LTK.

Answer 1

Set the -show (:show) option of the entry to the placeholder character you want. You can do it during widget creation:

(make-instance 'ltk:entry ...... :show "*")

or later:

(ltk:configure my-entry :show "*")