File Printrun-pyglet12.patch of Package Printrun

diff --git a/printrun/gcview.py b/printrun/gcview.py
index 488ad54..15f547b 100755
--- a/printrun/gcview.py
+++ b/printrun/gcview.py
@@ -117,6 +117,7 @@ class GLPanel(wx.Panel):
         self.pmat = (GLdouble * 16)()
         self.mvmat = (GLdouble * 16)()
         self.pygletcontext = Context(current_context)
+        self.pygletcontext.canvas = self
         self.pygletcontext.set_current()
         self.dist = 1000
         self.vpmat = None
diff --git a/printrun/stlview.py b/printrun/stlview.py
index 1c5b475..2b5a221 100644
--- a/printrun/stlview.py
+++ b/printrun/stlview.py
@@ -115,6 +115,7 @@ class GLPanel(wx.Panel):
         self.pmat = (GLdouble * 16)()
         self.mvmat = (GLdouble * 16)()
         self.pygletcontext = Context(current_context)
+        self.pygletcontext.canvas = self
         self.pygletcontext.set_current()
         self.dist = 1000
         self.vpmat = None