- added docs and examples for bpy.app.handlers

- correct error in own last commit for BKE_screen_find_big_area()

doc/python_api/examples/bpy.app.handlers.1.py

@@ -0,0 +1,20 @@
+"""
+Persistent Handler Example
+++++++++++++++++++++++++++
+
+By default handlers are freed when loading new files, in some cases you may
+wan't the handler stay running across multiple files (when the handler is
+part of an addon for example).
+
+For this the :data:`bpy.app.handlers.persistent` decorator needs to be used.
+"""
+
+import bpy
+from bpy.app.handlers import persistent
+
+
+@persistent
+def load_handler(dummy):
+   print("Load Handler:", bpy.data.filepath)
+
+bpy.app.handlers.load_post.append(load_handler)