基于qt把ppt转换成pdf

void MainWindow::on_pushButton_2_clicked()

{

    QString fileName = "C:\\Users\\Administrator\\Desktop\\1112.pptx";

    QAxObject *_powerPointAxObj = new QAxObject("Powerpoint.Application", 0);

    if (!_powerPointAxObj)

    {

        _powerPointAxObj = new QAxObject("KWPP.Application", 0);

         if (!_powerPointAxObj)

         {

             return;

         }

    }

    _powerPointAxObj->dynamicCall("SetVisible(bool)", false);

    QAxObject *presentations = _powerPointAxObj->querySubObject("Presentations");

    QList<QVariant> paramList;

    paramList.push_back(QVariant(fileName));

    paramList.push_back(0);

    paramList.push_back(0);

    paramList.push_back(0);

    QAxObject *presentation = presentations->querySubObject("Open(const QString&,int,int,int)",paramList);

    if (presentation != nullptr)

    {

        paramList.clear();

        QString application_path = QApplication::applicationDirPath();

        application_path.replace("/", "\\");

        application_path += "\\ShowFile.pdf";

        paramList.push_back(application_path);

        paramList.push_back(32);

        paramList.push_back(0);

        presentation->dynamicCall("SaveAs(const QString&,int,int)", paramList);

        presentations->dynamicCall("Close()");  

        delete presentations;

    }

}