class QTextEdit没有名为insert的成员

[667778]

部分程序代码如下：
void Widget::remoteDataIncoming()
{
char c;
if (read(m_fd, &c, sizeof c) != 1) {
QMessageBox::warning(this, tr("Error"), tr("Receive error!"));
return;
}
m_receiveEdit->insert(QString(QChar(c)));
}
求大神指导

[667778]

[zhxianbin]

m_receiveEdit.text = QString(QChar(c));