fix GCC errors when -std=c++17 is specified

2018-08-09 07:50:56 +08:00
parent 1ff1c55592
commit e91d3446eb
3 changed files with 33 additions and 31 deletions
--- a/source/gui/detail/native_window_interface.cpp
+++ b/source/gui/detail/native_window_interface.cpp
@@ -1384,9 +1384,10 @@ namespace nana{
 			}
 			else if(window_relationship::owner == rsp)
 				return owner;
-
-			return x11_parent_window(wd);
+			else if(window_relationship::parent == rsp)
+				return x11_parent_window(wd);
 #endif
+			return nullptr;
 		}

 		native_window_type native_interface::parent_window(native_window_type child, native_window_type new_parent, bool returns_previous)