Sending input data

Try to PostMessage() it. By doing that, you simulate any message
you want. including key storkes, mouse moves ect.

1. Check out which message you would like to send, in your case
you are looking for WM_KEYDOWN or WM_KEYUP.
2. Check out which parameters it requires (usually found in
MSDN). in your case, wParam=VK_LEFT and lParam=1.
3. Send data via PostMessage.

Heres some code with it:

PostMessage(NULL, (UINT)WM_KEYDOWN, (WPARAM)VK_LEFT, (LPARAM)1)

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Gil Zussman
Check out Goose Chase, Coming this fall!
http://www.gilzu.com

Thanks for the reply, but maybe I should have explained a little more in detail. I want the function to work in all (or at least virtual all) cases. By sending window messages, only programs that actually uses the messages for keyboard input will respond to my function. Neither GetAsyncKeyState or DirectInput''s functions IDirectInputDevice8::GetDeviceData and IDirectInputDevice8::GetDeviceState will notice it. And I can safely assume that most games doesn''t use window messages to process user input. There certanly must be a low-level way of simulating keyboard input so that all applications, irrespective of way of handling it, will believe that the key was pressed.
I hope that made it a bit clearer.

Look into SendInput(). It does exactly what you want.

BOOL Keyboard::IsKeyDown( int Key )
{

	// Check if the key was set

	if( m_KeyBuffer[Key] & 0x80 )
		return TRUE;
	else
		return FALSE;
	
}

try making a keyboard class, this one i used to check if a key was down. If you want the whole class, drop me a line at c_chack@yahoo.com

Thanks a bunch jacklin!