Send Key Strokes to Games using Direct Input

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I can send any windows application key strokes with PostMessage api. But I can't send key strokes to Game window by using PostMessage.

Anyone know anything about using Direct Input functions for sending keys to games from C#.

An alternate way would be to hook the DirectInput API directly - Microsoft Research has provided a library to do this already: http://research.microsoft.com/en-us/projects/detours/

Once you hook into the API, you can do whatever you want with it. However, it's worth noting that in recent versions of Windows, DirectInput for mouse & keyboard input is just a wrapper around the Win32 windows messages. DirectInput spawns a thread in the background and simply intercepts window messages before passing them along back to the application. It's one of the reasons why Microsoft no longer recommends the use of DirectInput - and it means that messaging APIs like PostMessage should work just fine.

c# - Send Key Strokes to Games using Direct Input, An alternate way would be to hook the DirectInput API directly - Microsoft Research has provided a library to do this already:  Use . String Keys = "Test"; SendKeys.Send(Keys); this code to send keys to any application. Just put this code in timer_start() add some delay before starting of timer and stop timer after execution. Now run your project which will initiate timer, before timeout open your game and wait for keys to press!!

One alternative, instead of hooking into DirectX, is to use a keyboard driver (this is not SendInput()) to simulate key presses - and event mouse presses.

You can use Oblita's Interception keyboard driver (for Windows 2000 - Windows 7) and the C# library Interception (wraps the keyboard driver to be used in C#).

With it, you can do cool stuff like:

input.MoveMouseTo(5, 5);
input.MoveMouseBy(25, 25);
input.SendLeftClick();

input.KeyDelay = 1; // See below for explanation; not necessary in non-game apps
input.SendKeys(Keys.Enter);  // Presses the ENTER key down and then up (this constitutes a key press)

// Or you can do the same thing above using these two lines of code
input.SendKeys(Keys.Enter, KeyState.Down);
Thread.Sleep(1); // For use in games, be sure to sleep the thread so the game can capture all events. A lagging game cannot process input quickly, and you so you may have to adjust this to as much as 40 millisecond delay. Outside of a game, a delay of even 0 milliseconds can work (instant key presses).
input.SendKeys(Keys.Enter, KeyState.Up);

input.SendText("hello, I am typing!");

/* All these following characters / numbers / symbols work */
input.SendText("abcdefghijklmnopqrstuvwxyz");
input.SendText("1234567890");
input.SendText("!@#$%^&*()");
input.SendText("[]\\;',./");
input.SendText("{}|:\"<>?");

Because the mechanism behind these key presses is a keyboard driver, it's pretty much unrestricted.

[Help] Send Keys to Game with DirectInput Hook, Send Keys to Game with DirectInput Hook - C and C++ Hacks and so, let me get this straight: you try to inject key presses with directionput,  However, if I open a game like, say, Counter-Strike, then the keystroke gets "lost" - as in, nothing occurs. On the other hand, if I open Counter-Strike's console, then the keystroke gets registered (like in notepad). Tested in another game, League of Legends, exactly the same behaviour. In the actual game, no keystroke is detected.

There is now way to do this via the DirectInput API.

The only way to archive the same effect would be to write your own DirectInput COM object which just wraps the normal DirectInput object. Afterwards you can add code to simulate keystrokes. The trick is to replace the Win32 dinput.dll with your version. All games will then load your DLL on startup.

I'm afraid that you can't do that from a managed language though. You have to do this with native code as it requirs quite a bit of low level hackery.

[Solved] c- sharp DirectInput (Send Key), NET doesn't support DirectInput (atleast that's what I understood, correct me if not​). //Directx Keycode public int dwFlags; //This tells you what is use After we initialised our variables we can send some Keys to DirectX Games. is that I'm trying to also send key combination like CTRL+J for example and I  You can use the unmanaged SendInput function for this. It posts the input on a level lower then DirectInput. It is very important to know what keycodes to send. These can vary between games. If Windows Virtual keycodes don't work for a game, you can try sending DIKEYBOARD constants (like DIKEYBOARD_A etc.) and if it still doesn't work keep trying.

You can use the unmanaged SendInput function for this. It posts the input on a level lower then DirectInput. It is very important to know what keycodes to send. These can vary between games. If Windows Virtual keycodes don't work for a game, you can try sending DIKEYBOARD constants (like DIKEYBOARD_A etc.) and if it still doesn't work keep trying. Half Life or Counter Strike, for instance, expect ASCII codes as keycodes (it took me a while to figure this out)

Tutorial, The "correct" way to manipulate game input Game: Tomb Raider Legend As of 2011 Microsoft doesn't recommend using DirectInput for keyboards or GetTickCount64(); // Has enough time elapsed to send the next key? if  Ended up not using Python to send keystrokes but rather used it to call an AutoHotKey script that does the heavy lifting for me. Check my comment bellow for more details. EDIT2: Lots of people have found this thread, and many are curious about how I solved the issue.

Worked for a friends Game (Nostale) without probems:

Also here a usefull list of Virtual Key Codes

        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll")]
        static extern bool PostMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);

        private void button1_Click(object sender, EventArgs e)
        {
            const int WM_SYSKEYDOWN = 0x0104;
            const int VK_SPACE = 0x20;

            IntPtr WindowToFind = FindWindow(null, "WINDOW NAME");

            PostMessage(WindowToFind, WM_SYSKEYDOWN, VK_SPACE, 0);
        }

Send keys to game, sending keys to a certain game which I believe is using DirectInput to g19​can you send keystrokes through hitting some pre-programmed  To send a keystroke to a different application Activate the application window that will receive the keystrokes, and then call the Send or SendWait method. Because there is no managed method to activate another application, you must use native Windows methods to force focus on other applications.

How to: Simulate Mouse and Keyboard Events in Code, Although you can simulate keyboard input by using the strategies the SendKeys class for sending keystrokes to the active application. Send, {a down} Sleep 10 Send, {a up} 4) Some games do not allow their keybinds to be 'hijacked'. -Explanation: Many games, especially DirectX driven, use driver level keyboard interaction and cannot be. changed via AHK. You need to choose keybindings that the game is NOT using, some people have had

Send Key Strokes to Games - c# - csharp, But i cant send key strokes to Game window by using PostMessage. Anyone know anything about using Direct Input functions for sending keys to games from​  Direct Input to Game - Python Plays GTA V pygta-3-input import numpy as np from PIL import ImageGrab import cv2 import time def process_img ( image ): original_image = image # convert to gray processed_img = cv2 . cvtColor ( image , cv2 .

PyDirectInput · PyPI, Python mouse and keyboard input automation for Windows using Direct Input. /​questions/14489013/simulate-python-keypresses-for-controlling-a-game scroll functions; drag functions; hotkey functions; support for special  Simulate directinput? (No gameguard) - posted in Ask for Help: Hi, Im trying to send keystrokes to a game called Eternal Fighter Zero. Its not a MMO so theres no gameguard on it. However, the game uses direct input, so none of the send commands of ahk works. Is there a way so send keystrokes using external dlls or some other way? Thanks

Comments
  • Isn't this a duplicate of stackoverflow.com/questions/407020/about-my-macro-programs ? If not, why did you create a new account?
  • no it is not duplicate . I have not create a new account.Account name is still same.And i wanna send keys to games.Not to windows applications.
  • maybee I'm missing soemthign but aren't games Window Applications? Don't games have message loop they are pumping the user's input through to handle?
  • Don't close it - he specifically asks for DirectInput, not generic win32 programs.
  • Possible duplicate of Simulating Key Press c#
  • Wow! They changed that? Good to hear. I never really liked DInput.
  • it won't work. Your example is just what author tried, but in another way.