From 9f8a47b605d16f9257f84423ab991f95f320cb0d Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sat, 4 Aug 2018 16:52:57 +0200
Subject: [PATCH] add protected default constructor of SelectionFilterGate to
 simplifiy writing of sub-classes

---
 src/Gui/SelectionFilter.cpp         | 5 +++++
 src/Gui/SelectionFilter.h           | 3 +++
 src/Mod/Part/Gui/TaskFaceColors.cpp | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Gui/SelectionFilter.cpp b/src/Gui/SelectionFilter.cpp
index a2fc8cc1fc..f443093be4 100644
--- a/src/Gui/SelectionFilter.cpp
+++ b/src/Gui/SelectionFilter.cpp
@@ -62,6 +62,11 @@ SelectionFilterGate::SelectionFilterGate(SelectionFilter* filter)
     Filter = filter;
 }
 
+SelectionFilterGate::SelectionFilterGate()
+{
+    Filter = nullptr;
+}
+
 SelectionFilterGate::~SelectionFilterGate()
 {
     delete Filter;
diff --git a/src/Gui/SelectionFilter.h b/src/Gui/SelectionFilter.h
index 6490c2d690..0e77c4599c 100644
--- a/src/Gui/SelectionFilter.h
+++ b/src/Gui/SelectionFilter.h
@@ -108,6 +108,9 @@ public:
     ~SelectionFilterGate();
     virtual bool allow(App::Document*,App::DocumentObject*, const char*);
 
+protected:
+    SelectionFilterGate();
+
 protected:
     SelectionFilter *Filter;
 };
diff --git a/src/Mod/Part/Gui/TaskFaceColors.cpp b/src/Mod/Part/Gui/TaskFaceColors.cpp
index 4987c29e4c..1bf9033b22 100644
--- a/src/Mod/Part/Gui/TaskFaceColors.cpp
+++ b/src/Mod/Part/Gui/TaskFaceColors.cpp
@@ -75,7 +75,7 @@ namespace PartGui {
         const App::DocumentObject* object;
     public:
         FaceSelection(const App::DocumentObject* obj)
-            : Gui::SelectionFilterGate((Gui::SelectionFilter*)0), object(obj)
+            : Gui::SelectionFilterGate(), object(obj)
         {
         }
         bool allow(App::Document* /*pDoc*/, App::DocumentObject*pObj, const char*sSubName)