Source code for activatewindow.cs

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Runtime.InteropServices;

namespace RobvanderWoude

{

	class ActivateWindow

	{

		static readonly string progver = "1.00";

		static bool debug = false;

		static string matchingtitle = string.Empty;

		static int Main( string[] args )

		{

			string windowtitle = string.Empty;

			string exact = "partial ";

			bool exacttitle = false;

			#region Parse and Validate Command Line

			foreach ( string arg in args )

			{

				if ( arg[0] == '/' )

				{

					switch ( arg.ToUpper( ) )

					{

						case "/?":

							return ShowHelp( );

						case "/D":

						case "/DEBUG":

							if ( debug )

							{

								return ShowHelp( "Duplicate switch /D" );

							}

							debug = true;

							break;

						case "/X":

						case "/EXACT":

							if ( exacttitle )

							{

								return ShowHelp( "Duplicate switch /X" );

							}

							exacttitle = true;

							exact = "exact ";

							break;

						default:

								return ShowHelp( "Invalid switch \"{0}\"", arg );

					}

				}

				else

				{

					if ( string.IsNullOrWhiteSpace( windowtitle ) )

					{

						// First unnamed argument is title

						windowtitle = arg;

					}

					else

					{

						// No second unnamed argument allowed

						return ShowHelp( "Invalid unnamed argument \"{0}\"", arg );

					}

				}

			}

#if DEBUG

			debug = true;

#endif

			#endregion Parse and validate Command Line

			// Find the window with the specified title

			IntPtr handle = FindWindow( windowtitle, exacttitle );

			if ( handle == IntPtr.Zero )

			{

				return ShowHelp( "No window was found with {0}title \"{1}\"", exact, windowtitle );

			}

			else

			{

				if ( debug && !exacttitle )

				{

					Console.WriteLine( "Specified title : \"{0}\"\nMatching title  : \"{1}\"\n", windowtitle, matchingtitle );

				}

				// If found, make it the foreground window

				if ( !SetForegroundWindow( handle ) )

				{

					return ShowHelp( "Unable to move the specified window to the foreground" );

				}

			}

			return 0;

		}

		static IntPtr FindWindow( string title, bool exacttitlematch = false )

		{

			foreach ( Process process in Process.GetProcesses( ) )

			{

				if ( process.MainWindowTitle.Equals( title ) )

				{

					return process.MainWindowHandle; // Return the FIRST matching window

				}

				else if ( !exacttitlematch )

				{

					if ( process.MainWindowTitle.Contains( title ) )

					{

						matchingtitle = process.MainWindowTitle;

						return process.MainWindowHandle; // Return the FIRST matching window

					}

				}

			}

			return IntPtr.Zero; // In case no matching title was found

		}

		#region DLL Imports

		[DllImport( "user32.dll" )]

		[return: MarshalAs( UnmanagedType.Bool )]

		static extern bool SetForegroundWindow( IntPtr hWnd );

		#endregion DLL Imports

		#region Error handling

		static int ShowHelp( params string[] errmsg )

		{

			#region Error Message

			if ( errmsg.Length > 0 )

			{

				List<string> errargs = new List<string>( errmsg );

				errargs.RemoveAt( 0 );

				Console.Error.WriteLine( );

				Console.ForegroundColor = ConsoleColor.Red;

				Console.Error.Write( "ERROR:\t" );

				Console.ForegroundColor = ConsoleColor.White;

				Console.Error.WriteLine( errmsg[0], errargs.ToArray( ) );

				Console.ResetColor( );

			}

			#endregion Error Message

			#region Help Text

			/*

			ActivateWindow.exe,  Version 1.00

			Activate the specified window

			Usage:   ActivateWindow.exe  title  [ options ]

			Where:   title   is the window title

			Options: /D      Debug mode: show the screen coordinates used

			         /X      window title and specified title must match eXactly

			                 (default: window title contains specified title)

			Note:    Return code -1 in case of errors, otherwise 0.

			Written by Rob van der Woude

			https://www.robvanderwoude.com

			*/

			#endregion Help Text

			#region Display Help Text

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "ActivateWindow.exe,  Version {0}", progver );

			Console.Error.WriteLine( "Activate the specified window" );

			Console.Error.WriteLine( );

			Console.Error.Write( "Usage:   " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "ActivateWindow.exe  title  [ options ]" );

			Console.ResetColor( );

			Console.Error.WriteLine( );

			Console.Write( "Where:   " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Write( "title   " );

			Console.ResetColor( );

			Console.WriteLine( "is the window title" );

			Console.Error.WriteLine( );

			Console.Error.Write( "Options: " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "/D      D" );

			Console.ResetColor( );

			Console.Error.WriteLine( "ebug mode: show the screen coordinates used" );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "         /X      " );

			Console.ResetColor( );

			Console.Error.Write( "window title and specified title must match e" );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "X" );

			Console.ResetColor( );

			Console.Error.WriteLine( "actly" );

			Console.Error.Write( "                 (default: window title " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "contains " );

			Console.ResetColor( );

			Console.Error.WriteLine( "specified title)" );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Note:    Return code -1 in case of errors, otherwise 0." );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Written by Rob van der Woude" );

			Console.Error.WriteLine( "https://www.robvanderwoude.com" );

			#endregion Display Help Text

			return -1;

		}

		#endregion Error handling

	}

}