How I can run a terminal command from a window application?

andreagenor

Hi there,
I use one command to process images through terminal in OSX.
denoise [some flags] [path]

denoise /Users/andreagenor/Desktop/testeRenderman.exr

I would like to do a window application to learn and turn my job easy.

I'm trying to do this way, but the process not starting.
What i need to do?

    QString filename = QFileDialog::getOpenFileName(this, tr("Open File"),"/Users/andreagenor/untitled.exr", tr("Images (*.exr *.xpm *.jpg)"));

    QProcess *proc = new QProcess(this);
    QStringList flags;
    flags.append(filename);
    proc->start("denoise", flags);

    ui->statusBar->showMessage(filename);

SGaist

Hi and welcome to devnet,

You should add checking about whether QProcess started correctly, that no error did happen etc.

You should also check the content of the standard output and standard error from QProcess.

andreagenor

Hi SGaist, thank you!

I did some changes and it appear to be running the command, but I receive this error from Renderman license.

T44002 License file setting is not set in rendermn.ini - aborting.

But it works fine from terminal.
I did some environment variables in the ~/.bash_profile

export RMANTREE="/Applications/Pixar/RenderManProServer-21.3"
export RMSTREE="/Applications/Pixar/RenderManForMaya-21.3-maya2017"
export PATH="${RMANTREE}/bin:${PATH}"

If i running this command in the terminal, all works and images are read and write correctly

/Applications/Pixar/RenderManProServer-21.3/bin/denoise /Users/andreagenor/Desktop/testeRenderman.exr

Here is the last code

void MainWindow::on_toolButton_clicked()
{
    QString filename = QFileDialog::getOpenFileName(this, tr("Open File"),"/Users/andreagenor/untitled.exr", tr("Images (*.exr)"));

    QProcess *proc = new QProcess(this);
    QStringList env = QProcess::systemEnvironment();
    proc->setEnvironment(env);

    QStringList flags;
    flags.append(filename);

    proc->startDetached("/Applications/Pixar/RenderManProServer-21.3/bin/denoise", QStringList(filename), "/");

    ui->statusBar->showMessage(filename);
}

SGaist

You should setup your QProcess environment then, see QProcess::setProcessEnvironment.

andreagenor

I still can't get :(
Someone can help me?

void MainWindow::on_toolButton_clicked()
{
    QString filename = QFileDialog::getOpenFileName(this, tr("Open File"),"/Users/andreagenor/untitled.exr", tr("Images (*.exr)"));

    QProcess *proc = new QProcess(this);
    QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
    env.insert("RMANTREE", "/Applications/Pixar/RenderManProServer-21.3");
    env.insert("RMSTREE", "/Applications/Pixar/RenderManForMaya-21.3-maya2017");
    env.insert("PATH", "${RMANTREE}/bin:${PATH}");
    proc->setProcessEnvironment(env);

    QStringList flags;
    flags.append(filename);

    proc->startDetached("/Applications/Pixar/RenderManProServer-21.3/bin/denoise", flags, "/");

    ui->statusBar->showMessage(filename);
};

The application Output is:

Starting /Users/andreagenor/Documents/ProjetosCPP/build-RM_Denoise-Desktop_Qt_5_8_0_clang_64bit-Debug/RM_Denoise.app/Contents/MacOS/RM_Denoise...
T44002 License file setting is not set in rendermn.ini - aborting.
/Users/andreagenor/Documents/ProjetosCPP/build-RM_Denoise-Desktop_Qt_5_8_0_clang_64bit-Debug/RM_Denoise.app/Contents/MacOS/RM_Denoise exited with code 0

SGaist

startDetached is a static method that you are calling like a standard method, you likely even have a warning about that when compiling.

Use start, otherwise the modifications you made the environment of proc won't be taken into account.

andreagenor

I did!
This is the solution

void MainWindow::on_toolButton_clicked()
{
    QString filename = QFileDialog::getOpenFileName(this, tr("Open File"),"/Users/andreagenor/untitled.exr", tr("Images (*.exr)"));

    QProcess proc;
    QString commandPath;
    QStringList flags;

    commandPath = "/Applications/Pixar/RenderManProServer-21.3/bin/denoise";

    flags.append("-f");
    flags.append("+strength0.7.filteroverride.json");
    flags.append(filename);

    QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
    env.insert("RMANTREE", "/Applications/Pixar/RenderManProServer-21.3");
    env.insert("RMSTREE", "/Applications/Pixar/RenderManForMaya-21.3-maya2017");
    env.insert("PATH", "${RMANTREE}/bin:${PATH}");
    proc.setProcessEnvironment(env);

    proc.start(commandPath,flags,QIODevice::ReadWrite);
    proc.waitForFinished(-1); 
};

SGaist

Great !

Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum members may know a solution has been found :)