Merge 761bd9b into 714fa6f

lukaszgo1 · web-flow · commit f5db84962c53 · 2021-01-12T09:23:54.000+10:00
diff --git a/source/NVDAObjects/window/__init__.py b/source/NVDAObjects/window/__init__.py
@@ -1,8 +1,7 @@
-#NVDAObjects/window.py
-#A part of NonVisual Desktop Access (NVDA)
-#Copyright (C) 2006-2019 NV Access Limited, Babbage B.V., Bill Dengler
-#This file is covered by the GNU General Public License.
-#See the file COPYING for more details.
+# A part of NonVisual Desktop Access (NVDA)
+# Copyright (C) 2006-2020 NV Access Limited, Babbage B.V., Bill Dengler
+# This file is covered by the GNU General Public License.
+# See the file COPYING for more details.
 
 import re
 import ctypes
@@ -136,7 +135,7 @@ def findOverlayClasses(self,clsList):
 		if not any(issubclass(cls,EditableText) for cls in clsList):
 			gi=winUser.getGUIThreadInfo(self.windowThreadID)
 			if gi.hwndCaret==self.windowHandle and gi.flags&winUser.GUI_CARETBLINKING:
-				if self.windowTextLineCount:
+				if self.windowTextLineCount and self.windowText:
 					from .edit import UnidentifiedEdit
 					clsList.append(UnidentifiedEdit)
 				else:
diff --git a/user_docs/en/changes.t2t b/user_docs/en/changes.t2t
@@ -14,6 +14,7 @@ What's New in NVDA
 == Bug Fixes ==
 - In terminal programs on Windows 10 version 1607 and later, when inserting or deleting characters in the middle of a line, the characters to the right of the caret are no longer read out. (#3200)
   - This experimental fix must be manually enabled in NVDA's advanced settings panel by changing the diff algorithm to Diff Match Patch.
+- Fixed access to edit fields in MCS Electronics IDE's. (#11966) 
 
 
 == Changes for Developers ==
