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From: Joe on 16 Dec 2009 01:05
I can't seem to get this figured out.

I have a small application that needs to send keystrokes to another. I
find it's hWnd using EnumWindows via coredll and PInvoke.

I then use the following code:

[System.Runtime.InteropServices.DllImport("coredll.dll")]
public static extern bool PostKeybdMessage( IntPtr hwnd, uint vKey,
uint KeyStateFlags, uint cCharacters, uint[] pShiftStateBuffer, uint[]
pCharacterBuffer );


uint[] buf = new uint[1];
uint[] States = new uint[1];
States[0] = 0x1;
buf[0] = 65;
PostKeybdMessage(OtherhWnd, 0, 0x1, (uint)buf1.Length, States, buf);

This should be sending an 'A' to other application. I'm not getting
an error, but the application isn't getting the keystroke.

Any ideas?

From: r_z_aret on 16 Dec 2009 16:11
On Wed, 16 Dec 2009 01:05:59 -0500, Joe <joe.goaway(a)nonebusiness.com>
wrote:

>I can't seem to get this figured out.
>
>I have a small application that needs to send keystrokes to another. I
>find it's hWnd using EnumWindows via coredll and PInvoke.
>
>I then use the following code:
>
>[System.Runtime.InteropServices.DllImport("coredll.dll")]
>public static extern bool PostKeybdMessage( IntPtr hwnd, uint vKey,
>uint KeyStateFlags, uint cCharacters, uint[] pShiftStateBuffer, uint[]
>pCharacterBuffer );
>
>
>uint[] buf = new uint[1];
>uint[] States = new uint[1];
>States[0] = 0x1;
>buf[0] = 65;
>PostKeybdMessage(OtherhWnd, 0, 0x1, (uint)buf1.Length, States, buf);
>
>This should be sending an 'A' to other application. I'm not getting
>an error, but the application isn't getting the keystroke.
>
>Any ideas?

Two different approaches. The keybd_event function will send keyboard
strokes to whatever application has focus. If what you really want is
characters, rather than keyboard events, you can use WM_CHAR messages
to send strings; I've found that many programs that accept keyboard
input actually accept WM_CHAR messages.

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Robert E. Zaret, eMVP
PenFact, Inc.
20 Park Plaza, Suite 400
Boston, MA 02116
www.penfact.com
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