Question about OpenProcess in C#

[mrdennis87]

I just want to make sure I am doing this correct as I am learning C# currently.

I know you must first open the process, read or write to the memory then close the process. My question is..

If you Open the process will that value be the window handle? ex.

Intptr hReadProcess = OpenProcess(0x001F0FFF, false, ProcessID);

The reason I am asking is because every time I call open process it returns a value(the window handle?) but changes every time you read it.

I am calling OpenProcess, and this is my code to convert the integer to a string

TXTBA.Text = Convert.ToString(hReadProcess);

Any help is appreciated, thank you in advance.

[SKU]

No, that's not the window handle, it's an open handle to the specified process. (Think of a process without a window!)

If you want the window handle, google:

* FindWindow
* EnumWindows
* GetWindowThreadProcessId
* ..

[Envoke]

        [DllImport("kernel32.dll")]
        public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

            Process[] m_proccess = null;
            m_proccess = Process.GetProcessesByName("Wow");
            if (m_proccess.Length != 0)
            {
                if (m_proccess[0] == null)
                    return false;

               IntPtr Handle = OpenProcess(0x001F0FFF, false, m_proccess[0].Id);
            }

[mrdennis87]

        [DllImport("kernel32.dll")]
        public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

            Process[] m_proccess = null;
            m_proccess = Process.GetProcessesByName("Wow");
            if (m_proccess.Length != 0)
            {
                if (m_proccess[0] == null)
                    return false;

               IntPtr Handle = OpenProcess(0x001F0FFF, false, m_proccess[0].Id);
            }

Thank you for providing the code, I compared it to what I'm doing in my project, and I am doing it correct. I am in the process of trying to read the memory at the moment. To call the readprocessmemory I need to have the handle. ex. readmemory(handle, etc). When I am using the open process function it is giving me random numbers. First time I call it will be like 1302, second time will be 2405, and third 2605 etc.. I thought the handle would be the same every time I get it. Sorry If I confused my question. I am trying to figure out why the handle is changing every time I call for it.

[Envoke]

Thank you for providing the code, I compared it to what I'm doing in my project, and I am doing it correct. I am in the process of trying to read the memory at the moment. To call the readprocessmemory I need to have the handle. ex. readmemory(handle, etc). When I am using the open process function it is giving me random numbers. First time I call it will be like 1302, second time will be 2405, and third 2605 etc.. I thought the handle would be the same every time I get it. Sorry If I confused my question. I am trying to figure out why the handle is changing every time I call for it.

Are you trying to figure out why ReadProcessMemory wont work or are you trying to figure out why the handle is changing?