BigTextBox placeholder

[danijerez]

Is your feature request related to a problem? Please describe.
It would be possible to add to the BigTextBox a field for a placeholder or hint. I'm trying to do it by controlling the Enter and the Leave but managing the language change is complicated, something like the native Windows Forms TextBox. Thank you.

Describe the solution you'd like
textUsername = new ReaLTaiizor.Controls.BigTextBox();
textUsername.PlaceHolder = "User"

Describe alternatives you've considered
textUsername = new ReaLTaiizor.Controls.BigTextBox();
textUsername.Hint = "User"

[github-actions]

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