size_t int_diff = wx_truncate_cast(size_t, diff);
wxCHECK_MSG( (wxFileOffset)int_diff == diff, wxInvalidOffset, wxT("huge file not supported") );
SetIntPosition(int_diff);
size_t int_diff = wx_truncate_cast(size_t, diff);
wxCHECK_MSG( (wxFileOffset)int_diff == diff, wxInvalidOffset, wxT("huge file not supported") );
SetIntPosition(int_diff);