Are there any good uses of macros? [closed]

Answer 1

Yes, they will still have uses such as for "message maps" in ATL, WTL, MFC.

For example, this is part of some personal code I have:

BEGIN_MSG_MAP(This)
    MESSAGE_HANDLER(WM_CLOSE, OnClose)
    MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
    MESSAGE_HANDLER(WM_GETDLGCODE, OnGetDlgCode)
    COMMAND_RANGE_HANDLER(IDOK, IDNO, OnButtonClick)
    CHAIN_MSG_MAP(CDialogResize)
END_MSG_MAP()

Or even specifying the layout of a window:

BEGIN_DLGRESIZE_MAP(This)
    DLGRESIZE_CONTROL(IDOK, DLSZ_MOVE_X)
    DLGRESIZE_CONTROL(IDCANCEL, DLSZ_MOVE_X)
    DLGRESIZE_CONTROL(IDC_EDITINPUT, DLSZ_SIZE_X)
END_DLGRESIZE_MAP()

Writing this without macros would involve a lot of unnecessary boilerplate code.