From Wang Rui, "I just successfully built the pdf plugin on Windows XP and MSVC and

fixed a small bug then:

ReaderWriterPDF.cpp, line 133, change:

std::string uri = std::string("file:") + foundFile;

to:

#if defined(WIN32) && !defined(__CYGWIN__)
           std::string uri = std::string("file:///") + foundFile;
#else
           std::string uri = std::string("file:") + foundFile;
#endif


That's because glib accepts "file:///C:\\data\\file.pdf" as URIs on
Windows, as well as "file:/home/data/file.pdf" on Unix, but
"file:C:\\data\\file.pdf" is not recognized.

Now I could read my Chinese translation of OSGQSG with osgpdf. :P"

src/osgPlugins/pdf/ReaderWriterPDF.cpp

@@ -130,7 +130,11 @@ class PopplerPdfImage : public osgWidget::PdfImage
 		gTypeInit = true;
 	    }
             
+#if defined(WIN32) && !defined(__CYGWIN__)
+            std::string uri = std::string("file:///") + foundFile;
+#else
             std::string uri = std::string("file:") + foundFile;
+#endif
 
             PopplerDocument* doc = poppler_document_new_from_file(uri.c_str(), NULL, NULL);
             if (!doc)