windows/keystrokes emulation

I have to add a component to a product, from which a connection is established to external products (e.g.: ERP products the customer uses). The interface should not be via product-specific API, but through emulation of keystrokes, opertaing the external-product's screens, messages interecepting etc.
Is there a source (site/book) for doing that - and as easy and as general as possible.
Thanks.
Gadi031698Asked:
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chensuConnect With a Mentor Commented:
In your case, I think the best way is to install a WH_JOURNALPLAYBACK Hook by using the SetWindowsHookEx function. The WH_JOURNALPLAYBACK hook enables an application to insert messages into the system message queue. You can use this hook to play back a series of mouse and keyboard. Look into the documentation about Hooks.
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chensuCommented:
And, the keybd_event, mouse_event, SendInput functions might be useful for you.
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Gadi031698Author Commented:
Thats good, but I have read that WH_JOURNALPLAYBACK is a global hook.
What I need is that a specific application (out component) plays keystrokes/mouse
in other applications.
Is there a way to do that?

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chensuCommented:
There is an article "Sending Keystrokes under Win32" in Windows Developer's Journal March 1997 Volume 8 Number 3. In this article, the author demonstrate how to use a journal playback hook to send keystrokes to other applications. You can download the source code (Sendkeys.cpp, Sendkeys.h, Sktest.c) at http://www.wdj.com.
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Gadi031698Author Commented:
That's excellent. I'll be grateful if you know about related 'public' articles (I can't read the article of WDJ over the web - it is not free). We have MSDN.
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Gadi031698Author Commented:
That's excellent. I'll be grateful if you know about related 'public' articles (I can't read the article of WDJ over the web - it is not free). We have MSDN.
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chensuCommented:
On MSDN Library CDs:

1. A useful article "Win32 Hooks".

2. A sample "MINREC: Demonstrates Journal Hooks Under Win32".

3. Some related KB articles.

You can use the Query tool to search for "journal playback".
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