Assume that non-MSVC compilers support it directly and use 'I' for MSVC. Closes #16596. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78010 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Assume that non-MSVC compilers support it directly and use 'I' for MSVC. Closes #16596. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78010 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775