__w64 just increases warnings and errors since VS 2013 (according to https://docs.microsoft.com/en-us/cpp/cpp/w64?view=msvc-160), so don't use it any longer. Closes https://github.com/wxWidgets/wxWidgets/pull/2455
__w64 just increases warnings and errors since VS 2013 (according to https://docs.microsoft.com/en-us/cpp/cpp/w64?view=msvc-160), so don't use it any longer. Closes https://github.com/wxWidgets/wxWidgets/pull/2455