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Microsoft's Common Control DLL and MSIE4.0
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Info-Policy-Notes | Newsletter available from listproc@cptech.org
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INFORMATION POLICY NOTES
November 19, 1997
Restrictive licensing of the MS Windows 95
Common Control DLL to force software companies
to distribute MSIE4.0
The following is a letter written to the US Department of Justice by
Brian Glaeske, of Great Plains Software. The issue concerns the ability
of independent software developers to use and distribute updated files
for Microsoft's Windows operating system. One of these files is
Comctl32.dll, which is an important file, apparently referred to as the
common control dll. Mr. Glaeske says this is one of Microsoft's
enhancements to the original version of Windows 95, and that it must be
distributed to users for third party software to work properly. (So
that all users have the ability to use the features of the OS which are
found in a particular "Applications Program Interface," or API).
However, in order for Great Plains Software or any other firm to
distribute Comctl32.dll, they must abide by a Micrsoft license
agreement, which is on the Web at:
http://www.microsoft.com/msdn/sdk/inetsdk/help/itt/IEProg/Licensing.htm#ch_MSHTML_licensing
A portion of that license agreement is given below:
Licensing and Distribution
Application developers who want to redistribute Microsoft®
Internet Explorer technologies, such as the WebBrowser control,
Wininet.dll, Urlmon.dll, or Comctl32.dll, must obtain a
redistribution license for Microsoft® Internet Explorer 4.0. The
Internet Explorer self-extracting executable installs a number of
system files and registry entries in addition to the actual
WebBrowser control.
Thus, according to Mr. Glaeske, third party software developers are
forced to distribute Microsoft's Internet Explorer. Indeed, it seems
from the license agreement that a user would actually have to install
MSIE4.0 to obtain Comctl32.dll. Thus independent software companies who
program for the Window 95 platform are required to distribute and
install Microsoft's applications. Mr. Glaeske asks the U.S. Department
of Justice to investigate this practice.
James Love
love@cptech.org
http://www.cptech.org
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Mr. Glaeske's letter follows:
Brian Glaeske
Joel I. Klein
Assistant Attorney General
Antitrust Division
U.S. Department of Justice
Washington, DC
antitrust@usdoj.gov
Dear Mr. Klein:
I am writing to ask the Department of Justice (DOJ) to protect consumers
by
taking action to prevent Microsoft from using anticompetitive practices
to
monopolize the market for Internet browsers. Specifically, Microsoft
should
not be permitted to force third party developers to redistribute
Microsoft
Internet Explorer in order to use features found in a programming API
(Application Program Interface).
A specific API shipped originally with the Microsoft Windows 95 OS
(Operating System) and was just recently enhanced with new features that
make it attractive for third party developers to use. This API is known
to
developers as the Common Control DLL. Because this is an enhancement to
the
OS that came after the initial release of Microsoft Windows 95, it is
necessary for third party developers to distribute the updated OS
components with their software in order to ensure that their software
works
properly. However, Microsoft is not allowing developers to redistribute
only the components that they need, instead Microsoft is demanding that
Microsoft Internet Explorer 4.0 is distributed with the third party
software
It is the responsibility of DOJ to ensure that Microsoft does not use
its
OS monopoly to monopolize the market for applications. I believe that
forcing third party developers to distribute Microsoft Internet Explorer
is
a blatant anti-competitive act.
Sincerely,
Brian Glaeske
1539 14th St. S.
Fargo, ND 58103-4001
bglaeske@cogs.gps.com
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