Open the modem configuration dialog from windows (C #)

Question

is it possible to open the modem dialog from the windows control center using c # program?

Specific dialog: Windows → Control Center → Phone and Modem → advanced tab → select provider → button configuration

The process that starts is displayed in the task manager as dllhost.exe.

Thanks and kind Bine

Answer 1

You can open the Phone and Modem control panel item by executing the " telephon.cpl " program. You can do this using the SHELL32 function directly with p / invoke or with RunDll32.

RunDll32 - , Windows, DLL , . , () .

CPL , shell32.

:

[System.Runtime.InteropServices.DllImport("shell32", EntryPoint = "Control_RunDLLW", CharSet = System.Runtime.InteropServices.CharSet.Unicode, SetLastError = true, ExactSpelling = true)]
private static extern bool Control_RunDLL(IntPtr hwnd, IntPtr hinst, [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)] string lpszCmdLine, int nCmdShow);

private void showOnMainThread_Click(object sender, EventArgs e)
{
    const int SW_SHOW = 1;
    // this does not work very well, the parent form locks up while the control panel window is open
    Control_RunDLL(this.Handle, IntPtr.Zero, @"telephon.cpl", SW_SHOW);
}

private void showOnWorkerThread_Click(object sender, EventArgs e)
{
    Action hasCompleted = delegate
    {
        MessageBox.Show(this, "Phone and Modem panel has been closed", "Notification", MessageBoxButtons.OK, MessageBoxIcon.Information);
    };

    Action runAsync = delegate
    {
        const int SW_SHOW = 1;
        Control_RunDLL(IntPtr.Zero, IntPtr.Zero, @"telephon.cpl", SW_SHOW);
        this.BeginInvoke(hasCompleted);
    };

    // the parent form continues to be normally operational while the control panel window is open
    runAsync.BeginInvoke(null, null);
}

private void runOutOfProcess_Click(object sender, EventArgs e)
{
    // the control panel window is hosted in its own process (rundll32)
    System.Diagnostics.Process.Start(@"rundll32.exe", @"shell32,Control_RunDLL telephon.cpl");
}