From 86db4c3215329f052a7bcdee56ea088b16a3cefc Mon Sep 17 00:00:00 2001
From: Alexander Golubev <fatzer2@gmail.com>
Date: Tue, 21 Jul 2015 05:04:21 +0300
Subject: [PATCH] PartDesign/Gui: enable sketches on datum planes inside bodies

---
 src/Mod/PartDesign/Gui/Command.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Mod/PartDesign/Gui/Command.cpp b/src/Mod/PartDesign/Gui/Command.cpp
index 6d9b8fc97..4c0d76e20 100644
--- a/src/Mod/PartDesign/Gui/Command.cpp
+++ b/src/Mod/PartDesign/Gui/Command.cpp
@@ -746,7 +746,9 @@ void CmdPartDesignNewSketch::activated(int iMsg)
                     QObject::tr("You have to select a face or plane from the active body!"));
                 return;
             }
-        } else if (pcActiveBody->getNextSolidFeature() != obj) {
+        } else if (!obj->getTypeId().isDerivedFrom(Part::Datum::getClassTypeId())
+                   && pcActiveBody->getNextSolidFeature() != obj) {
+            // TOOD: checkme why it's forbidden!?
             QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Selection from inactive feature"),
                 QObject::tr("You can only use the last solid feature as sketch support"));
             return;