setEchoMode(QLineEdit::Password);//设置密码隐藏 lineEdit->setStyleSheet("QLineEdit{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid gray;}" />
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qt之LineEdit的样式

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QLineEdit* lineEdit = new QLineEdit(this);
lineEdit->setContextMenuPolicy(Qt::NoContextMenu);//设置无右键菜单
lineEdit->setPlaceholderText(QString::fromLocal8Bit("密码"));//设置密码提示
lineEdit->setEchoMode(QLineEdit::Password);//设置密码隐藏
lineEdit->setStyleSheet("QLineEdit{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid gray;}"
"QLineEdit:hover{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid rgb(70,200,50);}");
lineEdit->setMaxLength(16);//设置最大长度16位



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