#include <QApplication>
#include <QDebug>
#include <QStandardPaths>
#include <QDir>
#include <QProcess>
#include <QApplication>

#include <windows.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QString target = "C:\\Test Space";
    QString msi_file = "C:\\test space.msi";
    QString msiexec = QStandardPaths::findExecutable("msiexec.exe");
    QStringList args;
    args <<"/passive"<<"/i"<<QDir::toNativeSeparators(msi_file);
    args <<"TARGETDIR=\""+QDir::toNativeSeparators(target)+"\"";

    if (!QProcess::startDetached(msiexec, args)) {
        qDebug()<<"Start msiexec failed!";
    }

    STARTUPINFOA si;
    PROCESS_INFORMATION pi;
    ZeroMemory(&si, sizeof(si));
    ZeroMemory(&pi, sizeof(pi));

    si.cb = sizeof(si);
    QString cmdline = QDir::toNativeSeparators(msiexec) + " /passive /i \"" + QDir::toNativeSeparators(msi_file) + "\""
            + " TARGETDIR=\""+QDir::toNativeSeparators(target)+"\"";
    if (!CreateProcessA(QDir::toNativeSeparators(msiexec).toLocal8Bit().constData(),
                       cmdline.toLocal8Bit().data(),
                       nullptr,
                       nullptr,
                       FALSE,
                       0,
                       nullptr,
                       nullptr,
                       &si,
                       &pi
                       )) {
        qDebug()<<"Start msiexec failed"<<GetLastError();
        qDebug()<<"cmd:"<<cmdline.toLatin1();
    }
    WaitForSingleObject(pi.hProcess, INFINITE);
    CloseHandle(pi.hProcess);
    CloseHandle(pi.hThread);

    return 0;
}