More added or not clarification in GUI engine

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@8309 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/guiengine/widget.cpp

@@ -298,6 +298,7 @@ void Widget::move(const int x, const int y, const int w, const int h)
     m_w = w;
     m_h = h;
     
+    if (m_element != NULL)
         m_element->setRelativePosition( core::rect < s32 > (x, y, x+w, y+h) );
 }
 

src/guiengine/widget.hpp

@@ -511,6 +511,11 @@ namespace GUIEngine
         /**
           * \brief removes and deletes the child with the given PROP_ID
           * \param id PROP_ID property of the child to remove
+          *
+          * \note  If the widget has been add()ed, it is moved immediately;
+          *        if the widget is not currently visible, it will take the
+          *        new position next time it is add()ed.
+          *
           * \return whether deletion was successful
           */
         bool deleteChild(const char* id);