docs/latex/wx/weakrefdynamic.tex

   1 \section{\class{wxWeakRefDynamic<T>}}\label{wxweakrefdynamic}
   2
   3 wxWeakRefDynamic<T> is a template class for weak references that is used in
   4 the same way as wxWeakRef<T>. The only difference is that wxWeakRefDynamic
   5 defaults to using \texttt{dynamic\_cast<>} for establishing the object
   6 reference (while wxWeakRef defaults to \texttt{static\_cast<>}).
   7
   8 So, wxWeakRef will detect a type mismatch during compile time and will
   9 have a little better run-time performance. The role of wxWeakRefDynamic
  10 is to handle objects which derived type one does not know.
  11
  12 \textbf{Note:} wxWeakRef<T> selects an implementation based on the static type
  13 of T. If T does not have wxTrackable statically, it defaults to to a mixed-
  14 mode operation, where it uses \texttt{dynamic\_cast<>} as the last measure (if
  15 available from the compiler and enabled when building wxWidgets).
  16
  17 For general cases, wxWeakRef<T> is the better choice.
  18
  19 For API documentation, see: \helpref{wxWeakRef}{wxweakref}
  20