QTCreator how to enable password filled option when using Line edit?

I am new to QT Creator. I have a form that has a line edit and a push button. The line edit has the role to fill in a password. Can anyone please tell me how to enable the property for password to the line edit i have? I would like to see some circles instead of a word when filling in the password.

I am working in c++ under开发者_StackOverflow中文版 Ubuntu. THX

Appreciate!

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You have to set the echoMode to Password