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<TITLE>GNU General Public License - GNU Project - Free Software Foundation (FSF)</TITLE></HEAD>
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<p>
GDILines - Demonstrating how to draw lines in a picture box using the GDI,
controlling background color and line color. It also includes a simple
animation using a timer..
<P>
Copyright (C) 2003 Michael Roy Burke
<p>
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
<p>
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
<p>
<hr>
<P>
<H2><A href="http://www.gnu.org/copyleft/gpl.html#TOC1" name="SEC1">GNU GENERAL PUBLIC
LICENSE</A></H2>
<P>Version 2, June 1991
</P>
<PRE>Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
</PRE>
<H2><A href="http://www.gnu.org/copyleft/gpl.html#TOC2" name="SEC2">Preamble</A></H2>
<P>The licenses for most software are designed to take away your freedom to share
and change it. By contrast, the GNU General Public License is intended to
guarantee your freedom to share and change free software--to make sure the
software is free for all its users. This General Public License applies to most
of the Free Software Foundation's software and to any other program whose
authors commit to using it. (Some other Free Software Foundation software is
covered by the GNU Library General Public License instead.) You can apply it to
your programs, too.
</P>
<P>When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom to
distribute copies of free software (and charge for this service if you wish),
that you receive source code or can get it if you want it, that you can change
the software or use pieces of it in new free programs; and that you know you
can do these things.
</P>
<P>To protect your rights, we need to make restrictions that forbid anyone to deny
you these rights or to ask you to surrender the rights. These restrictions
translate to certain responsibilities for you if you distribute copies of the
software, or if you modify it.
</P>
<P>For example, if you distribute copies of such a program, whether gratis or for a
fee, you must give the recipients all the rights that you have. You must make
sure that they, too, receive or can get the source code. And you must show them
these terms so they know their rights.
</P>
<P>We protect your rights with two steps: (1) copyright the software, and (2) offer
you this license which gives you legal permission to copy, distribute and/or
modify the software.
</P>
<P>Also, for each author's protection and ours, we want to make certain that
everyone understands that there is no warranty for this free software. If the
software is modified by someone else and passed on, we want its recipients to
know that what they have is not the original, so that any problems introduced
by others will not reflect on the original authors' reputations.
</P>
<P>Finally, any free program is threatened constantly by software patents. We wish
to avoid the danger that redistributors of a free program will individually
obtain patent licenses, in effect making the program proprietary. To prevent
this, we have made it clear that any patent must be licensed for everyone's
free use or not licensed at all.
</P>
<P>The precise terms and conditions for copying, distribution and modification
follow.
</P>
<H2><A href="http://www.gnu.org/copyleft/gpl.html#TOC3" name="SEC3">TERMS AND
CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</A></H2>
<P><STRONG>0.</STRONG>
This License applies to any program or other work which contains a notice
placed by the copyright holder saying it may be distributed under the terms of
this General Public License. The "Program", below, refers to any such program
or work, and a "work based on the Program" means either the Program or any
derivative work under copyright law: that is to say, a work containing the
Program or a portion of it, either verbatim or with modifications and/or
translated into another language. (Hereinafter, translation is included without
limitation in the term "modification".) Each licensee is addressed as "you".
<P>
Activities other than copying, distribution and modification are not covered by
this License; they are outside its scope. The act of running the Program is not
restricted, and the output from the Program is covered only if its contents
constitute a work based on the Program (independent of having been made by
running the Program). Whether that is true depends on what the Program does.
<P><STRONG>1.</STRONG>
You may copy and distribute verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and appropriately
publish on each copy an appropriate copyright notice and disclaimer of
warranty; keep intact all the notices that refer to this License and to the
absence of any warranty; and give any other recipients of the Program a copy of
this License along with the Program.
<P>
You may charge a fee for the physical act of transferring a copy, and you may
at your option offer warranty protection in exchange for a fee.
<P><STRONG>2.</STRONG>
You may modify your copy or copies of the Program or any portion of it, thus
forming a work based on the Program, and copy and distribute such modifications
or work under the terms of Section 1 above, provided that you also meet all of
these conditions:
<P>
<UL>
<LI>
<STRONG>a)</STRONG> You must cause the modified files to carry prominent
notices stating that you changed the files and the date of any change.
<P></P>
<LI>
<STRONG>b)</STRONG> You must cause any work that you distribute or publish,
that in whole or in part contains or is derived from the Program or any part
thereof, to be licensed as a whole at no charge to all third parties under the
terms of this License.
<P></P>
<LI>
<STRONG>c)</STRONG> If the modified program normally reads commands
interactively when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an announcement
including an appropriate copyright notice and a notice that there is no
warranty (or else, saying that you provide a warranty) and that users may
redistribute the program under these conditions, and telling the user how to
view a copy of this License. (Exception: if the Program itself is interactive
but does not normally print such an announcement, your work based on the
Program is not required to print an announcement.)
</LI>
</UL>
These requirements apply to the modified work as a whole. If identifiable
sections of that work are not derived from the Program, and can be reasonably
considered independent and separate works in themselves, then this License, and
its terms, do not apply to those sections when you distribute them as separate
works. But when you distribute the same sections as part of a whole which is a
work based on the Program, the distribution of the whole must be on the terms
of this License, whose permissions for other licensees extend to the entire
whole, and thus to each and every part regardless of who wrote it.
<P>
Thus, it is not the intent of this section to claim rights or contest your
rights to work written entirely by you; rather, the intent is to exercise the
right to control the distribution of derivative or collective works based on
the Program.
<P>
In addition, mere aggregation of another work not based on the Program with the
Program (or with a work based on the Program) on a volume of a storage or
distribution medium does not bring the other work under the scope of this
License.
<P><STRONG>3.</STRONG> You may copy and distribute the Program (or a work based on
it, under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following: <!-- we use this doubled UL to get the sub-sections indented, --> <!-- while making the bullets as unobvious as possible. -->
<UL>
<LI>
<STRONG>a)</STRONG> Accompany it with the complete corresponding
machine-readable source code, which must be distributed under the terms of
Sections 1 and 2 above on a medium customarily used for software interchange;
or,
<P></P>
<LI>
<STRONG>b)</STRONG> Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your cost of
physically performing source distribution, a complete machine-readable copy of
the corresponding source code, to be distributed under the terms of Sections 1
and 2 above on a medium customarily used for software interchange; or,
<P></P>
<LI>
<STRONG>c)</STRONG> Accompany it with the information you received as to the
offer to distribute corresponding source code. (This alternative is allowed
only for noncommercial distribution and only if you received the program in
object code or executable form with such an offer, in accord with Subsection b
above.)
</LI>
</UL>
The source code for a work means the preferred form of the work for making
modifications to it. For an executable work, complete source code means all the
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