Keyboard simulation

[Emanuil Achim]

I want to simulate in the UI this situation: the user press at the same time the folowing keys:
<Ctrl>, <Alt> and <A>
If I need only the simulation for one key I do this:
pWnd->PostMessage ( WM_KEYDOWN, 'Y', 0 );
or
pWnd->PostMessage ( WM_KEYDOWN, VK_RETURN, 0 );
but how can I do this (if it is possible) for more than a key ???

I don't care what kind of solution somebody has, but I need one.

Thanks a lot.

Emanuil Achim
[email protected]

[Paul McKenzie]

Why not make an accelerator entry in the resources that maps a command ID to <Ctrl> <Alt> <A>? Then it's as simple as a WM_COMMAND message when the user presses this combination.

If this is not possible, the only way that I can think of is to call GetKeyboardState(), change the state of the Ctrl and Alt and A virtual keys, and then call SetKeyboardState().

Regards,

Paul McKenzie

[Troy T]

Another solution is to post that key combination directly into the keyboard buffer via the keybd_event() win32 function, or for Windows NT you can use SendInput(). Those allow you to map a virtual key code (multiple layers, etc).

Here's an example of posting the CTRL + ALT + A keys to the keyboard input buffer:
VOID keybd_event( 65, 6, KEYEVENTF_EXTENDEDKEY, GetMessageExtraInfo() );



The "65" is the "A" value.
The "6" is the CTRL (2) OR'd with the ALT (4) value to come up with 6.

Hope that helps..

- Troy

[Emanuil Achim]

I tried this function:
keybd_event( 'A', VK_SHIFT, KEYEVENTF_EXTENDEDKEY, GetMessageExtraInfo() );
But if the focus is in a edit field it types the
"a" and NOT "A"

By the way I have NT 4 and VC++ 5.0. I am looking for the function SendInput() but I don't found it. The VC help says that it's in the <winuser.h> but there is not. Maybe I must install something special ?!

[G Kirkham]

try SetKeyboardState.