Anyone Know How to Control The Windows by C#

[Atran]

Hello Everybody.
I want to know How to Control The Windows by C# Language Programming, that I can shutdown the Windows, or restart the windows, and more more controls programmed by C#, Can Anyone show me The Code.

Atran

[NVergunst]

Well I think your best bet would be the API world. You have to import external functions from a dll. For example to close a Windows application programmaticall y, you should import the functions

[DllImport("user32.dll")]
        public static extern int FindWindow(
        string lpClassName, // class name
        string lpWindowName // window name
        );
[DllImport("user32.dll")]
        public static extern int SendMessage(
        int hWnd, // handle to destination window
        uint Msg, // message
        int wParam, // first message parameter
        int lParam // second message parameter
        );

Findwindow gets the Window's handle of the window that has the close function, and then SendMessage sends these weird cryptic messages that can be anything from WM_CLOSE to a keypress simulation.

And for capturing the startup/shutdown of windows my guess is you have to find the appropriate function that is acpi triggered.

Is this the sort of thing you are wanting to do? I myself only just learned about using API calls successfully, so I may not be the best source, but at least it gives you some google search terms.

[Atran]

Thanks you.

[SammyB]

Hello Everybody.
I want to know How to Control The Windows by C# Language Programming, that I can shutdown the Windows, or restart the windows, and more more controls programmed by C#, Can Anyone show me The Code.

Atran

In .Net, you can also use Win32Shutdown. There is sample code at the very bottom of this page: http://www.craigmurphy.com/blog/?s=WMI
I'm going to try the code, but I better post first.

[SammyB]

That is scary code! No notices, no warnings, down-boy! Plus, the code is UGLY. I like the API solution better. You can even add the API solution as an Excel macro. I did it once, LOL!

I made several changes: straightened the quotes, qualified the enum, and commented that you must add a reference to System.Manageme nt:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Management;		// Must add a reference to System.Management in Solution Explorer
namespace ShutDown
{
	public partial class Form1 : Form
	{
		public enum ShutDown
		{
			LogOff = 0,
			Shutdown = 1,
			Reboot = 2,
			ForcedLogOff = 4,
			ForcedShutdown = 5,
			ForcedReboot = 6,
			PowerOff = 8,
			ForcedPowerOff = 12
		}
		public Form1()
		{
			InitializeComponent();
		}
		private void button1_Click(object sender, EventArgs e)
		{
			ManagementClass W32_OS = new ManagementClass("Win32_OperatingSystem");
			ManagementBaseObject inParams, outParams;
			int result;
			W32_OS.Scope.Options.EnablePrivileges = true;
			foreach (ManagementObject obj in W32_OS.GetInstances())
			{
				inParams = obj.GetMethodParameters("Win32Shutdown");
				inParams["Flags"] = ShutDown.ForcedShutdown;
				inParams["Reserved"] = 0;
				outParams = obj.InvokeMethod("Win32Shutdown", inParams, null);
				result = Convert.ToInt32(outParams["returnValue"]);
				if (result != 0) throw new Win32Exception(result);
			}
		}
	}
}