access to global configuration using set_config and get_config

gui/qt/qrcodewidget.py

@@ -6,6 +6,7 @@ import PyQt4.QtGui as QtGui
 import os
 import qrcode
 
+import electrum
 from electrum import bmp
 from electrum.i18n import _
 
@@ -99,9 +100,9 @@ class QRDialog(QDialog):
         hbox = QHBoxLayout()
         hbox.addStretch(1)
 
-        if parent:
+        config = electrum.get_config()
-            self.config = parent.config
+        if config:
-            filename = os.path.join(self.config.path, "qrcode.bmp")
+            filename = os.path.join(config.path, "qrcode.bmp")
 
             def print_qr():
                 bmp.save_qrcode(qrw.qr, filename)

lib/__init__.py

@@ -5,7 +5,7 @@ from wallet import Wallet, Wallet_2of2, Wallet_2of3, Imported_Wallet
 from verifier import TxVerifier
 from network import Network, DEFAULT_SERVERS, DEFAULT_PORTS, pick_random_server
 from interface import Interface
-from simple_config import SimpleConfig
+from simple_config import SimpleConfig, get_config, set_config
 import bitcoin
 import account
 import transaction

lib/simple_config.py

@@ -6,6 +6,15 @@ import os
 from util import user_dir, print_error, print_msg
 
 
+config = None
+def get_config():
+    global config
+    return config
+
+def set_config(c):
+    global config
+    config = c
+
 
 class SimpleConfig:
     """
@@ -32,7 +41,7 @@ a SimpleConfig instance then reads the wallet file.
         self.user_config = {}
         self.read_user_config()
 
-
+        set_config(self)