Thread: inline vrs define

  1. #1
    Registered User
    Join Date
    Jul 2003
    Posts
    450

    inline vrs define

    just started reading Effective C++ Second Edition by Scott Meyers and I came into a problem with converting the following define
    Code:
    #define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)
    I imagine the inline code would be somthing like
    Code:
    inline bool KeyDown(TYPE vk_code)
    { 
       return ((GetAsyncKeyState(vk_code) & 0x8000) ? TRUE : FALSE) 
    }
    What do I use for the type for my parameter (vk_code) being that it is a define?

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    Location
    The edge of the known universe
    Posts
    39,660
    Use whatever GetAsyncKeyState() uses as the type of its parameter
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
    Registered User Codeplug's Avatar
    Join Date
    Mar 2003
    Posts
    4,981
    Since the return type is "bool" and not "BOOL", you really want to use "true" instead of "TRUE" and "false" instead of "FALSE".
    It gets converted all the same but I like em to match up

    BTW - GetAsyncKeyState() takes an int.

    gg

  4. #4
    Registered User
    Join Date
    Jul 2003
    Posts
    450
    thanks!

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Changing flags from a DLL?
    By RobotGymnast in forum C++ Programming
    Replies: 17
    Last Post: 10-27-2008, 01:34 PM
  2. Adding buttons, edit boxes, etc to the window
    By rainmanddw in forum Windows Programming
    Replies: 1
    Last Post: 04-10-2006, 03:07 PM
  3. whats wrong here
    By sreetvert83 in forum C++ Programming
    Replies: 15
    Last Post: 09-21-2005, 10:05 AM
  4. LISP (DrScheme) any one?
    By Jeremy G in forum A Brief History of Cprogramming.com
    Replies: 5
    Last Post: 03-31-2004, 12:52 PM
  5. DOS, Serial, and Touch Screen
    By jon_nc17 in forum A Brief History of Cprogramming.com
    Replies: 0
    Last Post: 01-08-2003, 04:59 PM