FindWindow does not exist in current context

I'm new to WindowsForms building a small sample application. I'm trying to build an application that types text into a Notepad window and I'm getting the error `FindWindow does not exist in current context` when it's being imported from the dll. ``` namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void MenuAbout_Click(object sender, System.EventArgs e) { Form1 frm = new Form1(); frm.ShowDialog(); } private void Launch_Click(object sender, System.EventArgs e) { // find window handle of Notepad IntPtr handle = FindWindow("Notepad", "Untitled - Notepad"); if (!handle.Equals(IntPtr.Zero)) { // activate Notepad window if (SetForegroundWindow(handle)) { // send "Hello World!" SendKeys.Send("Hello World!"); // send key "Tab" SendKeys.Send("{TAB}"); // send key "Enter" SendKeys.Send("{ENTER}"); } } //Process.Start(@"D:\\32-Bit Programs\\StarCraft II\\Support\\SC2Switcher.exe"); } [DllImport("user32.dll", EntryPoint = "FindWindow")] private extern IntPtr FindWindow(string lp1, string lp2); [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)] [return: MarshalAs(UnmanagedType.Bool)] private extern bool SetForegroundWindow(IntPtr hWnd); } } ```