To make the reader available as default in OpenSUSE with Xfce i put the file "XChange PDF Viewer.desktop" with the following content into the folder "/home/user/.local/share/applications/".
[Desktop Entry] Version=1.0 Type=Application Name=XChange PDF Viewer Comment=Project-Id-Version: @PACKAGE@\nReport-Msgid-Bugs-To: i18n@suse.de\nPOT-Creation-Date: 2015-10-01 14:51+0000\nPO-Revision-Date: 2005-11-08 12:26+8\nLast-Translator: Steve Beattie\nLanguage-Team: English\nLanguage: \nMIME-Version: 1.0\nContent-Type: text/plain; charset=UTF-8\nContent-Transfer-Encoding: 8bit\nPlural-Forms: nplurals=2; plural=n != 1;\n Exec=wine "/windows/wd/Program Files/Tracker Software/PDF Viewer/PDFXCview.exe" Z:%F %F Icon=/windows/wd/Program Files/Tracker Software/PDF Viewer/PDF-XChange-Viewer.png Path= Terminal=false StartupNotify=false