retain value of qlineedit for next execution

Hi,
I have created a simple login form . I want give user a option of selecting previously used ID upon his next vist.

• Consider I open the login form and enter "XYZ" in userid box. It will take me to next form upon providing correct credentials. I will close application.
• When I reopen it should give me previously entered user id i.e xyz in userid textbox. Please guide me in achieving this.

Read about QSettings.

thanks..used the following link...
http://qt-project.org/wiki/How_to_Use_QSettings