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If you have Howard's book on hand, Appendix A takes you through the
process step by step...
Mike
--- In amibroker@xxxxxxxxxxxxxxx, Dennis Brown <see3d@xxx> wrote:
>
> Hello,
>
> I took the challenge from Tomasz that anyone who is willing to
learn,
> can extend AFL to do anything. My chosen task is to restore the
> scroll position of the Parameters Window after a "Reset all"
button
> click --and yes, it has an important use.
>
> Tomasz informed me that I would need to write a DLL to make this
> possible. There may be other ways, but I will try it this way.
>
> First I have to say that I do not know C++ (other than AFL has a
> similar syntax). Next I am not very familiar with anything Windows
(I
> am a Mac guy). So if I can do this (with a little help from my AB
> friends) Tomasz will be vindicated in his statements.
>
> I determined that all I need is to make an extremely simple DLL.
It
> will create the following new AFL function:
>
> oldScrollPosition = GetSetWindowScroll(newScrollPosition);
>
> It will simply return the current scroll position of the active
> foreground window and then set the scroll position to the supplied
> parameter. It should only be about 10 lines of C++ code.
>
> I have found the Windows calls that will get the handle of the
> foreground window, and (with a pointer from Tomasz) calls to get
and
> set the scroll thumb position on a standard window.
>
> Everything else I need to do I can handle with AutoIt or AFL.
>
> I have installed the free ADK and installed the free Visual C++
2008
> Express program, and started to try to write this.
>
> Initially I tried just Building the Sample DLL in the ADK. That
> mostly works, but gives me errors on the Plugin.cpp:
>
> error C2491: on 5 critical lines for : Definition of dllimport
> function not allowed
> these are the PLUGINAPI statements for Release, Init,
> GetFunnctionTable, SetSiteInterface, and GetPluginInfo.
>
> Somehow, I think I really need these lines to compile for any AB
DLL
> to work...
>
> I have tried a bunch of things, and I can make it give me more
errors,
> but unfortunately no less errors. So I think I need some hints or
> more help to get started.
>
> I was wondering if anyone has an answer, or a simple DLL sample
> project file that builds error free on Visual C++ 2008 Express
that
> you could email me to get me started on the right track with this?
>
> Thanks,
> Dennis
>
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