qt文本输入框提示信息

在Qt中，可以使用控件成员函数setStatusTip()来设置文本输入框的提示信息。可以运用QString::arg()函数来格式化添加数字变量。例如，可以使用以下代码设置QLineEdit类对象的提示信息和文本内容：

ui->lineEdit->setStatusTip(tr("Enter the message %1 %2").arg(3).arg(4));
ui->lineEdit->setText(tr("Enter the message %1 %2").arg(5).arg(6));

这段代码将在文本输入框中显示"Enter the message 5 6"的提示信息和内容。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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