Hide/show a Form fired by a Process

Hi !

I want to create a ".exe" winform project in order to launch an external application (e.g. the "calc.exe" of windows). When I fire my ".exe", I want to hide the calc and put a NotifyIcon in the tray icon bar. I fire the calc.exe application by calling a Process object in my ".exe"

My problems :

- how can I hide the calc (once launched by the Process) ?
- how can I show (e.g after a click on the NotifyIcon object) the application again ?

-------------------------------------------------
the file which contains the entry point :
-------------------------------------------------

Code:

---

public class main
{
  public static void Main(string[] args)
  {

    NotifyIcon oNotifyIcon = new NotifyIcon();       
    Icon oIcon = new Icon(@"c:\app.ico");
    oNotifyIcon.Icon = oIcon;
    notifyIcon1.Visible = true;

    Process oP = new Process();
    oP.StartInfo.FileName = "calc.exe";                                               
    oP.Start();   

    Form oForm = (Form) Form.FromHandle(oP.MainWindowHandle);       
    oForm.Visible = false;                 
  }               
}

---

The problem is that I have to attach the process to a Form (to make it visible or not with the .Visible property).
The code above is not good because the oForm object contains "null".
It seems that the method FromHandle only works with a object whose type is Control ...

Any idea ??? :rolleyes:

++
ico