return ;
}
SetThreadDesktop(hdeskUser);

IntPtr dwGuiThreadId = dwThreadId;

Form1 f=new Form1(); //此FORM1可以带notifyIcon，可以显示在托盘里，用户可点击托盘图标进行设置
System.Windows.Forms.Application.Run(f);


dwGuiThreadId = IntPtr.Zero;
SetThreadDesktop(hdeskSave);
SetProcessWindowStation(hwinstaSave);
CloseDesktop(hdeskUser);
CloseWindowStation(hwinstaUser);
}

[DllImport("user32.dll")]
static extern int GetDesktopWindow();

[DllImport("user32.dll")]
static extern IntPtr GetProcessWindowStation();

[DllImport("kernel32.dll")]
static extern IntPtr GetCurrentThreadId();

[DllImport("user32.dll")]
static extern IntPtr GetThreadDesktop(IntPtr dwThread);

[DllImport("user32.dll")]
static extern IntPtr OpenWindowStation(string a,bool b,int c);

[DllImport("user32.dll")]
static extern IntPtr OpenDesktop(string lpszDesktop, uint dwFlags,
bool fInherit, uint dwDesiredAccess);

[DllImport("user32.dll")]
static extern IntPtr CloseDesktop(IntPtr p);

[DllImport("rpcrt4.dll", SetLastError=true)]
static extern IntPtr RpcImpersonateClient(int i);


[DllImport("rpcrt4.dll", SetLastError=true)]
static extern IntPtr RpcRevertToSelf();

[DllImport("user32.dll")]
static extern IntPtr SetThreadDesktop(IntPtr a);

[DllImport("user32.dll")]
static extern IntPtr SetProcessWindowStation(IntPtr a);
[DllImport("user32.dll")]
static extern IntPtr CloseWindowStation(IntPtr a);
}
}