Auto-hide taskbar

Is there a way during unattended setup to set up the default
user to have an auto-hidden taskbar?

Or is there a way programmatically to set Auto Hide to
true by setting a registry variable?

We need to do something with several hundred machines,
so dopily clicking and pointing each one is OUT.
reverendAsked:
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jhanceCommented:
I haven't actually done this myself but the technique is to
use the SHAppBarMessage() function (header file is shellapi.h) and send an ABM_SETAUTOHIDEBAR message to the taskbar.
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reverendAuthor Commented:
That's cute. But it doesn't work.

Can someone comment on this in more detail?

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jhanceCommented:
Of course it works.  You need to be sure that you are sending the message to the right toolbar.  
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reverendAuthor Commented:
re: Can someone comment on this in more detail?

Please note the IN MORE DETAIL part?

I'm totally guessing that this is the kind of thing you are
talking about:

"abd.cbSize = sizeof(APPBARDATA);

      SHAppBarMessage (ABM_GETTASKBARPOS, &abd);

      abd.lParam = TRUE;

      diditwork = SHAppBarMessage (ABM_SETAUTOHIDEBAR, &abd);"

But guess what? I run it- and guess what? NO AUTO HIDE.

Where in the registry or whatever does it set for user X, make
the toolbar AutoHide?

Why doesn't Microsoft ever document anything?

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freterCommented:
We have checked it with SYSDIFF. Curious as it may seem: there is no location on the machine where MS seems to store information about the autohide-taskbar. Neither in the registry, nor on the disk. So, I#m still looking for the answer.
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freterCommented:
We have checked it with SYSDIFF. Curious as it may seem: there is no location on the machine where MS seems to store information about the autohide-taskbar. Neither in the registry, nor on the disk. So, I#m still looking for the answer.
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zhangfangCommented:
     
Try so:
      CWnd* pWnd=CWnd::FindWindow("Shell_TrayWnd",NULL);
      abd.hWnd=pWnd->m_hWnd;

      abd.cbSize = sizeof(APPBARDATA);

      SHAppBarMessage (ABM_GETTASKBARPOS, &abd);

      abd.lParam = TRUE;

      diditwork = SHAppBarMessage (ABM_SETAUTOHIDEBAR, &abd);"
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