I also had frustrations trying to use libary RGtk2 under Windows XP.
I kept getting the message
unable to load shared object C:\R\site-library\RGtk2\libs\i386\RGtk2.dll
even though it was on my path.
Uninstalling and reinstalling various versions of GTK2, both through R
and outside R, many times, including rebooting Windows, did not help.
With the help of some comments on R-help (Neil Rice, Mar 7, 2011), I found that
there was another conflicting version of zlib1.dll in a directory on my PATH.
Removing that directory from the path (inside R) fixed the problem and I am able
to run RGtk2 now.
Here's an R expression to look for copies of the various DLLs that GTK2 uses
(change c:/GTK2-Runtime/bin/ to be appropriate for your system):
for (dll in list.files(c:/GTK2-Runtime/bin/, pattern=*.dll$))
print(with(list(x=file.path(strsplit(Sys.getenv(PATH), ;)[[1]], dll)),
x[file.exists(x)]))
[1] C:\\GTK2-Runtime\\bin/freetype6.dll
[1] C:\\GTK2-Runtime\\bin/intl.dll
[1] C:\\GTK2-Runtime\\bin/libatk-1.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libcairo-2.dll
[1] C:\\GTK2-Runtime\\bin/libcairo-gobject-2.dll
[1] C:\\GTK2-Runtime\\bin/libcairo-script-interpreter-2.dll
[1] C:\\GTK2-Runtime\\bin/libexpat-1.dll
[1] C:\\GTK2-Runtime\\bin/libfontconfig-1.dll
[1] C:\\GTK2-Runtime\\bin/libgailutil-18.dll
[1] C:\\GTK2-Runtime\\bin/libgdk-win32-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libgdk_pixbuf-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libgio-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libglib-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libgmodule-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libgobject-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libgthread-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libgtk-win32-2.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libpango-1.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libpangocairo-1.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libpangoft2-1.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libpangowin32-1.0-0.dll
[1] C:\\GTK2-Runtime\\bin/libpng14-14.dll
[1] C:\\GTK2-Runtime\\bin/zlib1.dll
If there are any lines beginning with [2] in the output, there are multiple
versions of DLLs and these are potential problems (check that either the
DLLs are the same version, or that the GTK2 version is ahead on the path).
Note that is is not sufficient that the GTK2 library is on the path -- it has
to be ahead of other path components that have conflicting DLLs.
On 6/11/2011 8:59 PM, Michael Lawrence wrote:
I'm working on a mechanism that will download GTK+ (the official zip files)
into a predetermined location and put that location in front of the other
paths at load time. Hopefully this will resolve these continuing issues.
Michael
On Fri, Jun 10, 2011 at 6:07 AM, Janko Thyson
janko.thyson.rst...@googlemail.com wrote:
Okay, at least some positive result today (language issue ;-))
Thanks for trying. Seems like GTK2 and me are not meant to be ...
Regards,
Janko
On 10.06.2011 14:36, Prof Brian Ripley wrote:
It is a Microsoft error message, so your Windows is translating it, not R.
It does say 'The specified module' in English Windows, without saying who
specified the module (but it does often produce a popup naming the module).
I've no better idea what your problem is: the @ReadMe instructions work
for me, Uwe on winbuilder and in our teaching lab (and the advice in RGtk2
does not).
On Fri, 10 Jun 2011, Janko Thyson wrote:
On 10.06.2011 13:18, Prof Brian Ripley wrote:
On Fri, 10 Jun 2011, Janko Thyson wrote:
Dear list,
I've been trying to get gWidgets/gWidgetsRGtk2 to run
every other month for a while, but somehow I simply can't
figure out what's going wrong.
Your subject line indicates your confusion. It does not say
RGtk2.dll cannot be found (at least, the English version of the
message does not say so).
What it means is that RGtk2.dll or one of the DLLs it depends on
cannot be found. See the instructions at
http://cran.r-project.org/bin/windows/contrib/2.13/@ReadMe
It is Microsoft's error message, not ours.
Thanks for your answer. I followed the advice in the readme file and
installed
http://ftp.gnome.org/pub/gnome/binaries/win32/gtk+/2.22/gtk+-bundle_2.22.0-201010
16_win32.zip
Previously I made sure that all other previously installed GTK+ runtime
environments were removed and that the windows PATH reflects the correct
path to
the new GTK+ files. I also made sure I started a new R session before
trying
'require(gWidgetsRGtk2)' again. Yet, the same error. More precisely, a
dialog box
pops up asking me to install GTK+ or not. That's what's confusing me as
well: the
package's recommendation with respect to the version of an GTK+ runtime
environment is somewhat out-of-sync with the advice in the readme, even
though it
the version is fairly recent (2011-04-30)
Sorry for the german part in the error message, but I wasn't able to get
it all
to English (tried language = en in Rconsole file, setting up a
