How to place an icon onto a QLineEdit?

Question

There is a Search field with the magnification-lens and a greyed out \"search\" keyword at the top right corner of stackoverflow.com web site:

Answer 1

Here is an alternate simple way:

Set the placeholderText to "

Answer 2

QT5 addAction

```

const QIcon passwordIcon(":/new/icons/res/passwd.png");
ui->password->setClearButtonEnabled(true);
ui->password->addAction(passwordIcon, QLineEdit::LeadingPosition);

```

Answer 3

From QT 5.2 onwards you can do something like this. You should use pointers if you want to make it more flexible:

QIcon *ico;
ico = new QIcon(":/images/search.ico");
searchEdit->addAction(*ico, QLineEdit::LeadingPosition);

Answer 4

Simple Way for Dummies

1. Add a QLineEdit, and set it frameless by QLineEdit::setFrame
2. Add a QLabel with background color in white (by stylesheet) and a icon
3. Combine the line edit and the label with a layout, set spacing to 0
4. Set placeholder text with QLineEdit::setPlaceholderText

Result

---

Advanced Way

Check this thread: "Can QLineEdit do this?"

And the related python code: http://bazaar.launchpad.net/~henning-schroeder/%2Bjunk/qtwidgets/annotate/head:/qtwidgets/lineedit.py

Or

"How to do - inside in QLineEdit insert the button.[pyqt4]"

Basically customized a QLineEdit by painting a widget(label, button or even combobox) onto it. Then reset the margin, cursor, padding and the paint event. No magics!

Answer 5

Here's a way to achieve this with stylesheets only:

QLineEdit {
    background: #f3f3f3;
    background-image: url(:Images/search.svg); /* actual size, e.g. 16x16 */
    background-repeat: no-repeat;
    background-position: left;
    color: #252424;
    font-family: SegoeUI;
    font-size: 12px;
    padding: 2 2 2 20; /* left padding (last number) must be more than the icon's width */
}

Here's the result:

It's still not perfect. You don't have much influence over the icon's position.

Answer 6

QLineEdit* _lineEdit = new QLineEdit();
_lineEdit->setClearButtonEnabled(true);
_lineEdit->addAction(":/resources/search.ico", QLineEdit::LeadingPosition);
_lineEdit->setPlaceHolderText("Search...");

extracted from: http://saurabhg.com/programming/search-box-using-qlineedit/