我这里 路径都没问题了, 但是显示依然为NULL
void Widget::on_btnK_clicked()
{
int ret = QMessageBox::warning(this, qApp->applicationDirPath(),
qApp->applicationDirPath(),
QMessageBox::Save | QMessageBox::Discard
| QMessageBox::Cancel,
QMessageBox::Save);
ui->webView->load(QUrl(qApp->applicationDirPath()+"/html/k.html"));
}