Use the send2trash lib in _do_delete_dupe().

qt/base/app.py

@@ -121,10 +121,6 @@ class DupeGuru(DupeGuruBase, QObject):
         url = QUrl.fromLocalFile(unicode(path))
         QDesktopServices.openUrl(url)
     
-    @staticmethod
-    def _recycle_dupe(dupe):
-        platform.recycle_file(dupe.path)
-    
     @staticmethod
     def _reveal_path(path):
         DupeGuru._open_path(path[:-1])

qt/base/platform_lnx.py

@@ -7,7 +7,4 @@
 # which should be included with this package. The terms are also available at 
 # http://www.hardcoded.net/licenses/hs_license
 
-INITIAL_FOLDER_IN_DIALOGS = '/'
-
-def recycle_file(path):
-    pass
+INITIAL_FOLDER_IN_DIALOGS = u'/'

qt/base/platform_osx.py

@@ -9,7 +9,4 @@
 
 # dummy unit to allow the app to run under OSX during development
 
-INITIAL_FOLDER_IN_DIALOGS = '/'
-
-def recycle_file(path):
-    pass
+INITIAL_FOLDER_IN_DIALOGS = u'/'

qt/base/platform_win.py

@@ -7,16 +7,4 @@
 # which should be included with this package. The terms are also available at 
 # http://www.hardcoded.net/licenses/hs_license
 
-from __future__ import unicode_literals
-
-import logging
-
-import winshell
-
-INITIAL_FOLDER_IN_DIALOGS = 'C:\\'
-
-def recycle_file(path):
-    try:
-        winshell.delete_file(unicode(path), no_confirm=True, silent=True)
-    except winshell.x_winshell as e:
-        logging.warning("winshell error: %s", e)
+INITIAL_FOLDER_IN_DIALOGS = u'C:\\'