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Sending Input Messages to Other Windows or How To Win a Flash Game By Your Programming Skills

, 4 Jul 2006
Library for sending input messages to other windows and links to libraries you need to take full control over any running window.
take-over_demo.zip
App.ico
Finder.cur
FinderGone.bmp
FinderHome.bmp
resources.rct
TakeOverSample.exe
TakeOverSample.csproj.user
take-over_src.zip
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Remo
{
		/// <summary>
		/// Class for Sending Mouse and Keyboard events to ANY
		/// window in the system by a handle.
		/// </summary>
		public class TakeOver
		{

			private int handle;

			#region SendMessage Constants

			private const int WM_LBUTTONDOWN = 0x0201;
			private const int WM_LBUTTONUP   = 0x0202;
			private const int WM_LBUTTONDBLCLK = 0x0203; 
			private const int WM_RBUTTONDOWN = 0x0204;
			private const int WM_RBUTTONUP	 = 0x0205;
			private const int WM_RBUTTONDBLCLK = 0x0206;
			private const int WM_MOUSEMOVE   = 0x0200;

			private const int WM_KEYDOWN = 0x100;
			private const int WM_KEYUP = 0x0101;
			private const int WM_CHAR = 0x0102;

			#endregion SendMessage Constants

			#region Virtual Keys Constants
  
			public const int VK_0		   = 0x30;
			public const int VK_1		   = 0x31;
			public const int VK_2		   = 0x32;
			public const int VK_3		   = 0x33;
			public const int VK_4		   = 0x34;
			public const int VK_5		   = 0x35;
			public const int VK_6		   = 0x36;
			public const int VK_7		   = 0x37;
			public const int VK_8		   = 0x38;
			public const int VK_9		   = 0x39;
			public const int VK_A		   = 0x41;
			public const int VK_B		   = 0x42;
			public const int VK_C		   = 0x43;
			public const int VK_D		   = 0x44;
			public const int VK_E		   = 0x45;
			public const int VK_F		   = 0x46;
			public const int VK_G		   = 0x47;
			public const int VK_H		   = 0x48;
			public const int VK_I		   = 0x49;
			public const int VK_J		   = 0x4A;
			public const int VK_K		   = 0x4B;
			public const int VK_L		   = 0x4C;
			public const int VK_M		   = 0x4D;
			public const int VK_N		   = 0x4E;
			public const int VK_O		   = 0x4F;
			public const int VK_P		   = 0x50;
			public const int VK_Q		   = 0x51;
			public const int VK_R		   = 0x52;
			public const int VK_S		   = 0x53;
			public const int VK_T		   = 0x54;
			public const int VK_U		   = 0x55;
			public const int VK_V		   = 0x56;
			public const int VK_W		   = 0x57;
			public const int VK_X		   = 0x58;
			public const int VK_Y		   = 0x59;
			public const int VK_Z		   = 0x5A;

			public const int VK_BACK      =    0x08;
			public const int VK_TAB       =    0x09;
			public const int VK_CLEAR     =    0x0C;
			public const int VK_RETURN    =    0x0D;
			public const int VK_SHIFT     =    0x10;
			public const int VK_CONTROL   =    0x11;
			public const int VK_MENU      =    0x12;
			public const int VK_PAUSE     =    0x13;
			public const int VK_CAPITAL   =    0x14;
			public const int VK_KANA      =    0x15;
			public const int VK_HANGEUL   =    0x15;
			public const int VK_HANGUL    =    0x15;
			public const int VK_JUNJA     =    0x17;
			public const int VK_FINAL     =    0x18;
			public const int VK_HANJA     =    0x19;
			public const int VK_KANJI     =    0x19;
			public const int VK_ESCAPE    =    0x1B;
			public const int VK_CONVERT   =    0x1C;
			public const int VK_NONCONVERT=    0x1D;
			public const int VK_ACCEPT    =    0x1E;
			public const int VK_MODECHANGE=    0x1F;
			public const int VK_SPACE     =    0x20;
			public const int VK_PRIOR     =    0x21;
			public const int VK_NEXT      =    0x22;
			public const int VK_END       =    0x23;
			public const int VK_HOME      =    0x24;
			public const int VK_LEFT      =    0x25;
			public const int VK_UP        =    0x26;
			public const int VK_RIGHT     =    0x27;
			public const int VK_DOWN      =    0x28;
			public const int VK_SELECT    =    0x29;
			public const int VK_PRINT     =    0x2A;
			public const int VK_EXECUTE   =    0x2B;
			public const int VK_SNAPSHOT  =    0x2C;
			public const int VK_INSERT    =    0x2D;
			public const int VK_DELETE    =    0x2E;
			public const int VK_HELP      =    0x2F;
			public const int VK_LWIN      =    0x5B;
			public const int VK_RWIN      =    0x5C;
			public const int VK_APPS      =    0x5D;
			public const int VK_SLEEP     =    0x5F;
			public const int VK_NUMPAD0   =    0x60;
			public const int VK_NUMPAD1   =    0x61;
			public const int VK_NUMPAD2   =    0x62;
			public const int VK_NUMPAD3   =    0x63;
			public const int VK_NUMPAD4   =    0x64;
			public const int VK_NUMPAD5   =    0x65;
			public const int VK_NUMPAD6   =    0x66;
			public const int VK_NUMPAD7   =    0x67;
			public const int VK_NUMPAD8   =    0x68;
			public const int VK_NUMPAD9   =    0x69;
			public const int VK_MULTIPLY  =    0x6A;
			public const int VK_ADD       =    0x6B;
			public const int VK_SEPARATOR =    0x6C;
			public const int VK_SUBTRACT  =    0x6D;
			public const int VK_DECIMAL   =    0x6E;
			public const int VK_DIVIDE    =    0x6F;
			public const int VK_F1        =    0x70;
			public const int VK_F2        =    0x71;
			public const int VK_F3        =    0x72;
			public const int VK_F4        =    0x73;
			public const int VK_F5        =    0x74;
			public const int VK_F6        =    0x75;
			public const int VK_F7        =    0x76;
			public const int VK_F8        =    0x77;
			public const int VK_F9        =    0x78;
			public const int VK_F10       =    0x79;
			public const int VK_F11       =    0x7A;
			public const int VK_F12       =    0x7B;
			public const int VK_F13       =    0x7C;
			public const int VK_F14       =    0x7D;
			public const int VK_F15       =    0x7E;
			public const int VK_F16       =    0x7F;
			public const int VK_F17       =    0x80;
			public const int VK_F18       =    0x81;
			public const int VK_F19       =    0x82;
			public const int VK_F20       =    0x83;
			public const int VK_F21       =    0x84;
			public const int VK_F22       =    0x85;
			public const int VK_F23       =    0x86;
			public const int VK_F24       =    0x87;
			public const int VK_NUMLOCK   =    0x90;
			public const int VK_SCROLL    =    0x91;

			#endregion Virtual Keys Constants

			[DllImport("user32.dll", CharSet=CharSet.Auto)]
			private static extern int SendMessage(int hWnd, int msg, int wParam, IntPtr lParam);
			[DllImport("user32.dll", CharSet=CharSet.Auto)] // used for button-down & button-up
			private static extern int PostMessage(int hWnd, int msg, int wParam, IntPtr lParam);
			[DllImport("user32.dll", CharSet=CharSet.Auto)]
			private static extern bool SetForegroundWindow(IntPtr hWnd);


			public TakeOver(int handle)
			{
				this.handle = handle;
			}

			public void SetFocus() 
			{
				SetForegroundWindow(new IntPtr(this.handle));
			}

			public void SendLeftButtonDown(int x,int y) 
			{
				PostMessage(handle,WM_LBUTTONDOWN,0,new IntPtr(y * 0x10000 + x));
			}

			public void SendLeftButtonUp(int x,int y) 
			{
				PostMessage(handle,WM_LBUTTONUP,0,new IntPtr(y * 0x10000 + x));
			}

			public void SendLeftButtonDblClick(int x,int y) 
			{
				PostMessage(handle,WM_LBUTTONDBLCLK,0,new IntPtr(y * 0x10000 + x));
			}

			public void SendRightButtonDown(int x,int y) 
			{
				PostMessage(handle,WM_RBUTTONDOWN,0,new IntPtr(y * 0x10000 + x));
			}

			public void SendRightButtonUp(int x,int y) 
			{
				PostMessage(handle,WM_RBUTTONUP,0,new IntPtr(y * 0x10000 + x));
			}

			public void SendRightButtonDblClick(int x,int y) 
			{
				PostMessage(handle,WM_RBUTTONDBLCLK,0,new IntPtr(y * 0x10000 + x));
			}
			
			public void SendMouseMove(int x,int y) 
			{
				PostMessage(handle,WM_MOUSEMOVE,0,new IntPtr(y * 0x10000 + x));
			}

			public void SendKeyDown(int key) 
			{
				PostMessage(handle,WM_KEYDOWN,key,IntPtr.Zero);
			}
			
			public void SendKeyUp(int key) 
			{
				PostMessage(handle,WM_KEYUP,key,new IntPtr(1));
			}

			public void SendChar(char c)
			{
				SendMessage(handle, WM_CHAR, c, IntPtr.Zero);
			}
			
			public void SendString(string s)
			{
				foreach (char c in s) SendChar(c);
			}
		}
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Michal Remi
Web Developer
Slovakia Slovakia
I am one step before graduating Faculty of Mathematics, Physics and Informatics, Commenius University Bratislava, specialization Computer Graphics. Working as C# programmer on large IS. Creator of Ubytovanie na Slovensku site.

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