diff --git a/include/wx/dataview.h b/include/wx/dataview.h
index bb831d0df8..0d7f46cd8f 100644
--- a/include/wx/dataview.h
+++ b/include/wx/dataview.h
@@ -740,6 +740,7 @@ public:
     virtual void UnselectAll() = 0;
 
     void Expand( const wxDataViewItem & item );
+    void ExpandChildren( const wxDataViewItem & item );
     void ExpandAncestors( const wxDataViewItem & item );
     virtual void Collapse( const wxDataViewItem & item ) = 0;
     virtual bool IsExpanded( const wxDataViewItem & item ) const = 0;
@@ -793,7 +794,9 @@ protected:
 
     // Just expand this item assuming it is already shown, i.e. its parent has
     // been already expanded using ExpandAncestors().
-    virtual void DoExpand(const wxDataViewItem & item) = 0;
+    //
+    // If expandChildren is true, also expand all its children recursively.
+    virtual void DoExpand(const wxDataViewItem & item, bool expandChildren) = 0;
 
 private:
     // Implementation of the public Set/GetCurrentItem() methods which are only
diff --git a/include/wx/generic/dataview.h b/include/wx/generic/dataview.h
index d15991e810..b773882488 100644
--- a/include/wx/generic/dataview.h
+++ b/include/wx/generic/dataview.h
@@ -364,7 +364,7 @@ private:
     virtual wxDataViewItem DoGetCurrentItem() const wxOVERRIDE;
     virtual void DoSetCurrentItem(const wxDataViewItem& item) wxOVERRIDE;
 
-    virtual void DoExpand(const wxDataViewItem& item) wxOVERRIDE;
+    virtual void DoExpand(const wxDataViewItem& item, bool expandChildren) wxOVERRIDE;
 
     void InvalidateColBestWidths();
     void InvalidateColBestWidth(int idx);
diff --git a/include/wx/gtk/dataview.h b/include/wx/gtk/dataview.h
index ae2d2f0165..b5933cd33a 100644
--- a/include/wx/gtk/dataview.h
+++ b/include/wx/gtk/dataview.h
@@ -218,7 +218,7 @@ protected:
     virtual void DoSetExpanderColumn() wxOVERRIDE;
     virtual void DoSetIndent() wxOVERRIDE;
 
-    virtual void DoExpand(const wxDataViewItem& item) wxOVERRIDE;
+    virtual void DoExpand(const wxDataViewItem& item, bool expandChildren) wxOVERRIDE;
 
     virtual void DoApplyWidgetStyle(GtkRcStyle *style) wxOVERRIDE;
     virtual GdkWindow* GTKGetWindow(wxArrayGdkWindows& windows) const wxOVERRIDE;
diff --git a/include/wx/osx/cocoa/dataview.h b/include/wx/osx/cocoa/dataview.h
index 41d16201d8..97b2946ede 100644
--- a/include/wx/osx/cocoa/dataview.h
+++ b/include/wx/osx/cocoa/dataview.h
@@ -530,7 +530,7 @@ public:
     //
     virtual void DoSetIndent(int indent);
 
-    virtual void DoExpand(const wxDataViewItem& item);
+    virtual void DoExpand(const wxDataViewItem& item, bool expandChildren);
 
     virtual void HitTest(const wxPoint& point,
                          wxDataViewItem& item,
diff --git a/include/wx/osx/core/dataview.h b/include/wx/osx/core/dataview.h
index f3ac6d33fd..c9b7bde6ae 100644
--- a/include/wx/osx/core/dataview.h
+++ b/include/wx/osx/core/dataview.h
@@ -105,7 +105,7 @@ public:
  // other methods
  //
   virtual void DoSetIndent (int indent)                                                                     = 0; // sets the indentation in the native control
-  virtual void DoExpand    (wxDataViewItem const& item)                                                     = 0; // expands the passed item in the native control
+  virtual void DoExpand    (wxDataViewItem const& item, bool expandChildren)                                = 0; // expands the passed item in the native control
 
   virtual void HitTest     (wxPoint const& point, wxDataViewItem& item, wxDataViewColumn*& columnPtr) const = 0; // return the item and column pointer that contains with the passed point
   virtual void SetRowHeight(int height)                                                                     = 0; // sets the height of all rows
diff --git a/include/wx/osx/dataview.h b/include/wx/osx/dataview.h
index a7a58d6f54..28e4d557c2 100644
--- a/include/wx/osx/dataview.h
+++ b/include/wx/osx/dataview.h
@@ -276,7 +276,7 @@ protected:
   virtual void DoSetExpanderColumn() wxOVERRIDE;
   virtual void DoSetIndent() wxOVERRIDE;
 
-  virtual void DoExpand(const wxDataViewItem& item) wxOVERRIDE;
+  virtual void DoExpand(const wxDataViewItem& item, bool expandChildren) wxOVERRIDE;
 
   virtual wxSize DoGetBestSize() const wxOVERRIDE;
 
diff --git a/include/wx/qt/dataview.h b/include/wx/qt/dataview.h
index b61f803f75..778bda4d67 100644
--- a/include/wx/qt/dataview.h
+++ b/include/wx/qt/dataview.h
@@ -131,7 +131,7 @@ public:
 protected:
     virtual void DoSetExpanderColumn();
     virtual void DoSetIndent();
-    virtual void DoExpand( const wxDataViewItem & item );
+    virtual void DoExpand( const wxDataViewItem & item, bool expandChildren );
 
 private:
     virtual wxDataViewItem DoGetCurrentItem() const;
diff --git a/interface/wx/dataview.h b/interface/wx/dataview.h
index 76266e4126..582af1ac53 100644
--- a/interface/wx/dataview.h
+++ b/interface/wx/dataview.h
@@ -1402,6 +1402,16 @@ public:
     */
     void ExpandAncestors( const wxDataViewItem & item );
 
+    /**
+        Expand all all children of the given item recursively.
+
+        This is the same as calling Expand() on the @a item itself and then
+        calling it for all of its children, grandchildren etc recursively.
+
+        @since 3.1.5
+     */
+    void ExpandChildren( const wxDataViewItem & item );
+
     /**
         Returns pointer to the column. @a pos refers to the position in the
         control which may change after reordering columns by the user.
diff --git a/src/common/datavcmn.cpp b/src/common/datavcmn.cpp
index 14609bbccd..1f5fd4d66b 100644
--- a/src/common/datavcmn.cpp
+++ b/src/common/datavcmn.cpp
@@ -1265,7 +1265,14 @@ void wxDataViewCtrlBase::Expand(const wxDataViewItem& item)
 {
     ExpandAncestors(item);
 
-    DoExpand(item);
+    DoExpand(item, false);
+}
+
+void wxDataViewCtrlBase::ExpandChildren(const wxDataViewItem& item)
+{
+    ExpandAncestors(item);
+
+    DoExpand(item, true);
 }
 
 void wxDataViewCtrlBase::ExpandAncestors( const wxDataViewItem & item )
@@ -1287,7 +1294,7 @@ void wxDataViewCtrlBase::ExpandAncestors( const wxDataViewItem & item )
     // then we expand the parents, starting at the root
     while (!parentChain.empty())
     {
-         DoExpand(parentChain.back());
+         DoExpand(parentChain.back(), false);
          parentChain.pop_back();
     }
 }
diff --git a/src/generic/datavgen.cpp b/src/generic/datavgen.cpp
index 4b3ae669ec..d2c5a03a75 100644
--- a/src/generic/datavgen.cpp
+++ b/src/generic/datavgen.cpp
@@ -874,7 +874,7 @@ public:
     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 
-    void Expand( unsigned int row );
+    void Expand( unsigned int row, bool expandChildren = false );
     void Collapse( unsigned int row );
     bool IsExpanded( unsigned int row ) const;
     bool HasChildren( unsigned int row ) const;
@@ -990,6 +990,9 @@ private:
         return NULL;
     }
 
+    // Helper of public Expand(), must be called with a valid node.
+    void DoExpand(wxDataViewTreeNode* node, unsigned int row, bool expandChildren);
+
 private:
     wxDataViewCtrl             *m_owner;
     int                         m_lineHeight;
@@ -3907,7 +3910,7 @@ bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
     return true;
 }
 
-void wxDataViewMainWindow::Expand( unsigned int row )
+void wxDataViewMainWindow::Expand( unsigned int row, bool expandChildren )
 {
     if (IsList())
         return;
@@ -3916,6 +3919,14 @@ void wxDataViewMainWindow::Expand( unsigned int row )
     if (!node)
         return;
 
+    return DoExpand(node, row, expandChildren);
+}
+
+void
+wxDataViewMainWindow::DoExpand(wxDataViewTreeNode* node,
+                               unsigned int row,
+                               bool expandChildren)
+{
     if (!node->HasChildren())
         return;
 
@@ -3961,6 +3972,28 @@ void wxDataViewMainWindow::Expand( unsigned int row )
         // Send the expanded event
         SendExpanderEvent(wxEVT_DATAVIEW_ITEM_EXPANDED,node->GetItem());
     }
+
+    // Note that we have to expand the children when expanding recursively even
+    // when this node itself was already open.
+    if ( expandChildren )
+    {
+        const wxDataViewTreeNodes& children = node->GetChildNodes();
+
+        for ( wxDataViewTreeNodes::const_iterator i = children.begin();
+              i != children.end();
+              ++i )
+        {
+            wxDataViewTreeNode* const child = *i;
+
+            // Row currently corresponds to the previous item, so increment it
+            // first to correspond to this child.
+            DoExpand(child, ++row, true);
+
+            // We don't need +1 here because we'll increment the row during the
+            // next loop iteration.
+            row += child->GetSubTreeCount();
+        }
+    }
 }
 
 void wxDataViewMainWindow::Collapse(unsigned int row)
@@ -6309,11 +6342,11 @@ int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
     return m_clientArea->GetRowByItem( item );
 }
 
-void wxDataViewCtrl::DoExpand( const wxDataViewItem & item )
+void wxDataViewCtrl::DoExpand( const wxDataViewItem & item, bool expandChildren )
 {
     int row = m_clientArea->GetRowByItem( item );
     if (row != -1)
-        m_clientArea->Expand(row);
+        m_clientArea->Expand(row, expandChildren);
 }
 
 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
diff --git a/src/gtk/dataview.cpp b/src/gtk/dataview.cpp
index 39c18815a3..43e13deb6e 100644
--- a/src/gtk/dataview.cpp
+++ b/src/gtk/dataview.cpp
@@ -5068,12 +5068,13 @@ wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
     return m_internal->GetDataViewSortColumn();
 }
 
-void wxDataViewCtrl::DoExpand( const wxDataViewItem & item )
+void wxDataViewCtrl::DoExpand( const wxDataViewItem & item, bool expandChildren )
 {
     GtkTreeIter iter;
     iter.user_data = item.GetID();
     wxGtkTreePath path(m_internal->get_path( &iter ));
-    gtk_tree_view_expand_row( GTK_TREE_VIEW(m_treeview), path, false );
+    gtk_tree_view_expand_row( GTK_TREE_VIEW(m_treeview), path,
+                              expandChildren ? TRUE : FALSE );
 }
 
 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
diff --git a/src/osx/cocoa/dataview.mm b/src/osx/cocoa/dataview.mm
index 770719e4a9..9b5cc05f59 100644
--- a/src/osx/cocoa/dataview.mm
+++ b/src/osx/cocoa/dataview.mm
@@ -2314,9 +2314,9 @@ void wxCocoaDataViewControl::EnsureVisible(const wxDataViewItem& item, const wxD
     }
 }
 
-void wxCocoaDataViewControl::DoExpand(const wxDataViewItem& item)
+void wxCocoaDataViewControl::DoExpand(const wxDataViewItem& item, bool expandChildren)
 {
-    [m_OutlineView expandItem:[m_DataSource getDataViewItemFromBuffer:item]];
+    [m_OutlineView expandItem:[m_DataSource getDataViewItemFromBuffer:item] expandChildren:expandChildren];
 }
 
 unsigned int wxCocoaDataViewControl::GetCount() const
diff --git a/src/osx/dataview_osx.cpp b/src/osx/dataview_osx.cpp
index ad197cc85c..9812036eef 100644
--- a/src/osx/dataview_osx.cpp
+++ b/src/osx/dataview_osx.cpp
@@ -516,9 +516,9 @@ void wxDataViewCtrl::EnsureVisible(wxDataViewItem const& item, wxDataViewColumn
   }
 }
 
-void wxDataViewCtrl::DoExpand(wxDataViewItem const& item)
+void wxDataViewCtrl::DoExpand(wxDataViewItem const& item, bool expandChildren)
 {
-  return GetDataViewPeer()->DoExpand(item);
+  return GetDataViewPeer()->DoExpand(item, expandChildren);
 }
 
 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
diff --git a/src/qt/dataview.cpp b/src/qt/dataview.cpp
index ee2b5177d8..61cf681ca0 100644
--- a/src/qt/dataview.cpp
+++ b/src/qt/dataview.cpp
@@ -267,7 +267,7 @@ wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem &item,
     return wxRect();
 }
 
-void wxDataViewCtrl::DoExpand( const wxDataViewItem & item )
+void wxDataViewCtrl::DoExpand( const wxDataViewItem & item, bool expandChildren )
 {
 }
 
diff --git a/tests/controls/dataviewctrltest.cpp b/tests/controls/dataviewctrltest.cpp
index 2f88a0aa17..f970c886b2 100644
--- a/tests/controls/dataviewctrltest.cpp
+++ b/tests/controls/dataviewctrltest.cpp
@@ -271,6 +271,19 @@ TEST_CASE_METHOD(SingleSelectDataViewCtrlTestCase,
     CHECK( !m_dvc->IsExpanded(m_grandchild) );
 #endif
     CHECK( !m_dvc->IsExpanded(m_child2) );
+
+    m_dvc->Collapse(m_root);
+    CHECK( !m_dvc->IsExpanded(m_root) );
+
+    m_dvc->ExpandChildren(m_root);
+    CHECK( m_dvc->IsExpanded(m_root) );
+    CHECK( m_dvc->IsExpanded(m_child1) );
+
+    // Expanding an already expanded node must still expand all its children.
+    m_dvc->Collapse(m_child1);
+    CHECK( !m_dvc->IsExpanded(m_child1) );
+    m_dvc->ExpandChildren(m_root);
+    CHECK( m_dvc->IsExpanded(m_child1) );
 }
 
 TEST_CASE_METHOD(SingleSelectDataViewCtrlTestCase,