QlineEdit with some default text for which cursor should not be moved?

Question

In QT, a created lineEdit shows a text using the setText() method.

1. But the cursor is movable for the default text. I want the cursor should not be movable for the default text.

2. My lineEdit type has been set as password. Hence the default text('Password') is also displayed as '********'. Whenever user types the type has to be changed as password and when there is no text or until the user have not typed any text, the lineEdit should display the plain text 'password'

Any idea to fix the above two issues?

Answer 1

In the constructor put

ui->lineEdit->setPlaceholderText("password");
ui->lineEdit->setReadOnly(1);

And in on_lineEdit_selectionChanged() SLOT, put

ui->lineEdit->setText("");
ui->lineEdit->setEchoMode(QLineEdit::Password);
ui->lineEdit->setReadOnly(0);

Answer 2

For question 1, in Qt 5.0 and higher, setPlaceholderText does what you want. https://codereview.qt-project.org/#change,45326