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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>Update<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I would suggest to change some
functionality to make the library compatible with Pascal. With these 2
functions I was able to successfully connect with Pascal (Delphi) to the
library and let it export my OpenGL drawings. The proposed functions are
(together with 1 global var):<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>FILE *globalstream; //global
stream parameter to make the DLL compatible with other programming languages<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>GL2PSDLL_API void
gl2psCreateStream(const char *filename)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> globalstream =
fopen(filename, "wb");<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>} <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>GL2PSDLL_API void gl2psDestroyStream(void)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> fclose(globalstream);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>}<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>--------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The function gl2psBeginPage then
doesn’t need the stream parameter anymore, so it would become:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>GL2PSDLL_API GLint
gl2psBeginPage(const char *title, const char *producer, <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
GLint viewport[4], GLint format, GLint sort,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
GLint options, GLint colormode,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
GLint colorsize, GL2PSrgba *colormap,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
GLint nr, GLint ng, GLint nb, GLint buffersize,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
const char *filename)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>gl2ps->stream = globalstream;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>--------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The only thing that has to be
done with the example is to call both functions. The gl2psCreateStream prior to
the example and the gl2psDestroyStream after the example.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I hope those changes will be incorporated
in the next release so a lot more users are able to use the library in their
projects.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Kind regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Jerry<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Jarry Claessen <br>
<b>Sent:</b> Thursday, August 05, 2010 12:14<br>
<b>To:</b> 'gl2ps@geuz.org'<br>
<b>Subject:</b> gl2psBeginPage FILE type (*stream)<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>With help from people from some forums I was able to compile
the dll. This is all working now and I have made sure that the functions are
being exported. I am now creating a pascal wrapper to make the dll work with
all pascal based programming languages. This is almost completed, except for
one problem.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The “FILE *stream” is a specific C type, so I
have been told. This makes it impossible to write a wrapper since there is no
identical type in Pascal. Using a TStream from pascal and sending the pointer
for that TStream will probably not work.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So my question is. Is it possible to adjust the code so only
the filename should be provided (like with the LaTeX version I assume, reading)
and the functions creates the stream itself:<o:p></o:p></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Courier New"'>“filename</span></b><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'>(for L<sup>A</sup>T<sub>E</sub>X output
only) Specifies a name for the stream to which data is printed.”<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Or is there a way that the dll could provide some sort of
option to create a stream based on a filename and that stream could be passed
as a parameter.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>For instance just having a simple function:<o:p></o:p></p>
<p class=MsoNormal>gl2psCreateFileStream(const char *filename);<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Kind regards,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Jerry<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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