Clipping cursor

Hello, thank you for your answer. This is a part of code that does launching and clipping.

private void SomeApp_Load(object sender, EventArgs e)

{

    ....

    Cursor.Clip = new Rectangle(x, y, width, height);

    ....

}

void SomeBtn_Click(object sender, EventArgs e)

{

    switch(settingName)

    {

        case "ADM":    

                  string CommandLine = "Rundll32.exe Shell32.dll,Control_RunDLL timedate.cpl";

                 PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION();

                 STARTUPINFO sInfo = new STARTUPINFO();

                 sInfo.dwX = (uint)(Bounds.X + Width/5);

                 sInfo.dwY = (uint)(Bounds.Y + Height/5);

                  SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES();

                  SECURITY_ATTRIBUTES tSec = new SECURITY_ATTRIBUTES();

                  pSec.length = Marshal.SizeOf(pSec);

                  tSec.length = Marshal.SizeOf(tSec);

                  bool retValue = CreateProcess(null, CommandLine, ref pSec, ref tSec, false, 0,

                  IntPtr.Zero, null, ref sInfo, out pInfo);

                  Process dialogProcess = Process.GetProcessById((int)pInfo.dwProcessId);

                 bool p = SetForegroundWindow(dialogProcess.MainWindowHandle);

                 Cursor.Clip = new Rectangle(x, y, width, height);

                break;

    }

}