Execute a bat file with parent process privilege in qt

Question

I have a directory in the current working path of my executable which is called Store. In this directory, there is a bat file which is called init.bat. I have written the following code to run this file, but it seems CreateProcessW doesn't run the bat file. How should I fix this code? I didn't receive any error, the program just doesn't work and my bat file doesn't execute.

#include "mainwindow.h"

#include <QApplication>
#include <QSplashScreen>
#include <QMessageBox>
#include <QDir>

#include <windows.h>
#include <tchar.h>

#pragma comment(lib, "user32.lib")

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

    bool status = FALSE;
    QSplashScreen *splash_loader = new QSplashScreen;
    splash_loader->setPixmap(QPixmap(":/new/prefix1/images/splash.png"));
    splash_loader->show();

    STARTUPINFO si;
    PROCESS_INFORMATION pi;

    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    ZeroMemory(&pi, sizeof(pi));

    QString path = QDir::toNativeSeparators(qApp->applicationDirPath());
    path.append(L"\\Store\\init.bat");

    // Execute requirement batch file
    LPWSTR final_path = _wcsdup(path.toStdWString().c_str());

    status = CreateProcessW(NULL, final_path, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi);

    if(status && WaitForSingleObject(pi.hProcess, INFINITE))
    {
        CloseHandle(pi.hProcess);
        CloseHandle(pi.hThread);
        splash_loader->close();
    }

    MainWindow w;
    w.show();
    return a.exec();
}

You may want: [https://stackoverflow.com/questions/8713960/cmd-exe-k-switch](https://stackoverflow.com/questions/8713960/cmd-exe-k-switch) — drescherjm, Mar 01 '22 at 16:22
Yes but I think you need to execute `cmd /k init.bat` to run your batch file or use system() — drescherjm, Mar 01 '22 at 16:25
Here is a duplicate: [https://stackoverflow.com/questions/25919451/use-createprocess-to-run-a-batch-file](https://stackoverflow.com/questions/25919451/use-createprocess-to-run-a-batch-file) — drescherjm, Mar 01 '22 at 16:26
Also: [https://social.msdn.microsoft.com/Forums/en-US/259d3fe7-1f52-4068-bb12-32788104c798/createprocess-cannot-execute-batch-file?forum=vcgeneral](https://social.msdn.microsoft.com/Forums/en-US/259d3fe7-1f52-4068-bb12-32788104c798/createprocess-cannot-execute-batch-file?forum=vcgeneral) — drescherjm, Mar 01 '22 at 16:28

score 2 · Accepted Answer · answered Mar 01 '22 at 16:42

2

In Qt, you would use the QProcess-API (see QProcess::start()). Using CreateProcess is not the Qt way to do this. In the linked documentation, you will find a hint on executing commands via cmd on Windows and hints for other OS.

answered Mar 01 '22 at 16:42

Jens

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Execute a bat file with parent process privilege in qt

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