Kill my process if the other process is killed

Question

I want to write a code that starts a process and kills mine when the other process is killed.

Do you know good solutions?

My current code:

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Answer 1

    SHELLEXECUTEINFO ShExecInfo = { 0 };
    ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
    ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
    ShExecInfo.hwnd = NULL;
    ShExecInfo.lpVerb = NULL;
    ShExecInfo.lpFile = exeFile.c_str();
    ShExecInfo.lpParameters = "";
    ShExecInfo.lpDirectory = NULL;
    ShExecInfo.nShow = SW_SHOW;
    ShExecInfo.hInstApp = NULL;
    ShellExecuteEx(&ShExecInfo);
    ShowWindow(SW_HIDE);
    WaitForSingleObject(ShExecInfo.hProcess, INFINITE);
    EndDialog(0);