The key event for the shift key should not start the cell editor

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32378 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/grid.cpp

@@ -552,7 +552,7 @@ void wxGridCellEditor::HandleReturn(wxKeyEvent& event)
 bool wxGridCellEditor::IsAcceptedKey(wxKeyEvent& event)
 {
     // accept the simple key presses, not anything with Ctrl/Alt/Meta
-    return !(event.ControlDown() || event.AltDown());
+    return !(event.ControlDown() || event.AltDown() || event.GetKeyCode() == WXK_SHIFT);
 }
 
 void wxGridCellEditor::StartingKey(wxKeyEvent& event)