How to insert a button inside a QLineEdit

Question

I need help inserting a button inside in a QLineEdit that can call a function.

For example, like this google image:

Answer 1

In qt C++, I can drag and drop pushButton in the left of LineEdit. After that, I just need to set styleSheet for LineEdit with this code:

int FramWidth = lineEdit->style()->pixelMetric(QStyle::PM_DefaultFrameWidth);

lineEdit->setStyleSheet(QString("QLineEdit{padding-right: %1px; }").arg(ui->pushButton->sizeHint().width() + FramWidth +5));

And it works for me. Hope it can help.