Runtime Object Editor

/* ****************************************************************************
 *  RuntimeObjectEditor
 * 
 * Copyright (c) 2005 Corneliu I. Tusnea
 * 
 * This software is provided 'as-is', without any express or implied warranty.
 * In no event will the author be held liable for any damages arising from 
 * the use of this software.
 * Permission to use, copy, modify, distribute and sell this software for any 
 * purpose is hereby granted without fee, provided that the above copyright 
 * notice appear in all copies and that both that copyright notice and this 
 * permission notice appear in supporting documentation.
 * 
 * Corneliu I. Tusnea (corneliutusnea@yahoo.com.au)
 * www.acorns.com.au
 * ****************************************************************************/


using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;

namespace RuntimeObjectEditor.Utils
{
	public delegate int WindowEnumProc(IntPtr hwnd, IntPtr lparam);

	public enum GetWindowCmd : int
	{
		GW_HWNDFIRST = 0,
		GW_HWNDLAST,
		GW_HWNDNEXT,
		GW_HWNDPREV,
		GW_OWNER,
		GW_CHILD
	} ;

	public struct RECT
	{
		public int left;
		public int top;
		public int right;
		public int bottom;
	} ;

	public class NativeUtils
	{
		[DllImport("user32.dll")]
		public static extern bool EnumChildWindows(IntPtr hwnd, WindowEnumProc func, IntPtr lParam);

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

		[DllImport("user32.dll")]
		public static extern bool EnumThreadWindows(int threadId, WindowEnumProc func, IntPtr lParam);

		[DllImport("user32.dll")]
		public static extern int GetWindowTextLength(IntPtr hwnd);

		[DllImport("user32.dll")]
		public static extern int GetWindowText(IntPtr hwnd, StringBuilder buffer, int bufferLen);

		[DllImport("user32.dll")]
		public static extern int GetClassName(IntPtr hwnd, StringBuilder buffer, int bufferLen);

		[DllImport("user32.dll")]
		public static extern bool IsWindowVisible(IntPtr hwnd);

		[DllImport("user32.dll")]
		public static extern bool SetForegroundWindow(IntPtr hwnd);

		[DllImport("user32.dll")]
		public static extern IntPtr GetParent(IntPtr hwnd);

		[DllImport("user32.dll")]
		public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int processID);

		[DllImport("user32.dll")]
		public static extern IntPtr SendMessage(IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam);

		[DllImport("user32.dll")]
		public static extern bool MoveWindow(IntPtr hwnd, int x, int y, int width, int height, bool repaint);

		[DllImport("user32.dll")]
		public static extern IntPtr GetWindow(IntPtr hwnd, int cmd);

		[DllImport("user32.dll")]
		public static extern IntPtr GetWindowRect(IntPtr hwnd, ref RECT rc);

		[DllImport("user32.dll")]
		public static extern IntPtr GetClientRect(IntPtr hwnd, ref RECT rc);

		public static string GetWindowText(IntPtr hwnd)
		{
			int bufLen = GetWindowTextLength(hwnd) + 1;

			StringBuilder buffer = new StringBuilder(bufLen);
			GetWindowText(hwnd, buffer, bufLen);

			return buffer.ToString();
		}

		public static string GetClassName(IntPtr hwnd)
		{
			StringBuilder buffer = new StringBuilder(256);
			GetClassName(hwnd, buffer, 256);

			return buffer.ToString();
		}


		public static bool IsTargetInDifferentProcess(IntPtr targetWindowHandle)
		{
			int targetProcessId;
			int thisProcessId;

			int targetThreadId = GetWindowThreadProcessId(targetWindowHandle, out targetProcessId);

			if (targetProcessId == -1)
			{
				return true;
			}

			thisProcessId = Process.GetCurrentProcess().Id;

			//NativeUtils.GetWindowThreadProcessId(this.Handle, out thisProcessId);

			return thisProcessId != targetProcessId;
		}
	}
}