lock

[madhukumar]

how to lock and unlock lineEdit

[anda_skoa]

What do you mean with lock?

Cheers,
_

[ChrisW67]

Qt Assistant (http://qt-project.org/doc/qt-5/qtassistant-index.html) (either directly or embedded in Qt Creator (http://qt-project.org/doc/qtcreator-3.0/creator-help.html)) and the online documentation (http://qt-project.org/doc/) are your friends.

QWidget::setEnabled(), QLineEdit::setReadOnly()