run process with file between quote

filipdns

Hello,

I need to run command using process with command line below:

"magick convert -density 300 -trim "E:/messages/filename" -quality 100 "e:/output.jpg";
}

then the problem is about double quote.

I try to use escape :

   QDir directory("E:/messages");
   QStringList images = directory.entryList(QStringList(),QDir::Files);
   foreach(QString filename, images) {
program="magick convert -density 300 -trim \"E:/messages/" +filename+"\" -quality 100 \"e:/output.jpg\"";
}

but the output give:

"magick convert -density 300 -trim \"E:/messages/test.pdf\" -quality 100 \"e:/output.jpg\""

and then process is not working...

could you help me?

kind regards

mrjj

Hi
Instead of making one big string with both program and parameters, QProcess excepts you to use a list.
http://doc.qt.io/qt-5/qprocess.html

    QString program = "./path/to/Qt/examples/widgets/analogclock";
    QStringList arguments;
    arguments << "-style" << "fusion";

    QProcess *myProcess = new QProcess(parent);
    myProcess->start(program, arguments); // notice program and parameters are separate.

filipdns

great thanks a lot