执行下面的代码，产生这样的错误？ [复制链接]

p, li { white-space: pre-wrap; }
error: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure



void FileFind::browse()
{
    qDebug("browse");

    QString dir = QFileDialog::getExistingDirectory(this,
                                                    tr("选择查找路径"),
                                                    QDir::currentPath(),
                                                    QFileDialog::ShowDirsOnly);
    if(!dir.isEmpty())
    {
        locationComboBox->addItem(dir);
        locationComboBox->setCurrentIndex(locationComboBox->currentIndex() + 1);
    }
}

老夫不解