代码
/*登录输入框添加图标*/
QAction* user = new QAction;
user->setIcon(QIcon(QPixmap(":/image/user.png")));
ui.lineEdit->addAction(user, QLineEdit::LeadingPosition);
QAction* password = new QAction;
password->setIcon(QIcon(QPixmap(":/image/password.png")));
ui.lineEdit_2->addAction(password, QLineEdit::LeadingPosition);
ui.lineEdit_2->setEchoMode(QLineEdit::Password);
QAction* eye = new QAction;
eye->setIcon(QIcon(QPixmap(":/image/closeEye.png")));
ui.lineEdit_2->addAction(eye, QLineEdit::TrailingPosition);