BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ???          BorlandTalk.com Forum Index -> C++ Builder (Language C++) View previous topic :: View next topic   Author Message iwl Guest Posted: Mon Dec 18, 2006 5:47 pm    Post subject: HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ??? Hi, can I define a macro with variable Parameters for calling such funcs #define macro m(x, y, ...) funcxyz(x, y, ...) ???? Back to top Alan Bellingham Guest Posted: Mon Dec 18, 2006 5:52 pm    Post subject: Re: HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ??? "iwl" <Ingo.Wolf (AT) gmx (DOT) de> wrote: Quote: can I define a macro with variable Parameters for calling such funcs #define macro m(x, y, ...) funcxyz(x, y, ...) ???? #define m funcxyz is about the best you can do. macros are dumb text-replacement tools, not something very sophisticated. They're certainly not a real metaprogramming tool as you get in some languages. Alan Bellingham -- ACCU Conference: 11-14 April 2007 - Paramount Oxford Hotel Back to top Chris Uzdavinis (TeamB) Guest Posted: Mon Dec 18, 2006 9:14 pm    Post subject: Re: HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ??? "iwl" <Ingo.Wolf (AT) gmx (DOT) de> writes: Quote: Hi, can I define a macro with variable Parameters for calling such funcs #define macro m(x, y, ...) funcxyz(x, y, ...) ???? Sorry, that is not possible. However, I believe the feature (added to C99) was accepted for inclusion in a future version of C++, probably not until 2009 or later, though. (But some vendors may jump the gun and implement it early... who knows... though using such features have a little risk, as the final version of the next C++ standard may change along the way, and if you are using the "old" definition of a specified feature, it may break when the compiler is brought into compliance with the change.) -- Chris (TeamB); Back to top Richard Guest Posted: Tue Dec 26, 2006 4:25 am    Post subject: Re: HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ??? Gee, I must be missing the big picture, because the code below seems to works just fine. Richard //--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "Unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; #define FunctionCall_MACRO(X, Y) abc(X, Y) //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } int abc(int x, int y) { int z = x + y; return z; } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1_OnClick(TObject *Sender) { int z = FunctionCall_MACRO_MACRO(1,2); } //--------------------------------------------------------------------------- "Chris Uzdavinis (TeamB)" <chris (AT) uzdavinis (DOT) com> wrote in message news:86r6uxw80l.fsf (AT) explicit (DOT) atdesk.com... Quote: "iwl" <Ingo.Wolf (AT) gmx (DOT) de> writes: Hi, can I define a macro with variable Parameters for calling such funcs #define macro m(x, y, ...) funcxyz(x, y, ...) ???? Sorry, that is not possible. However, I believe the feature (added to C99) was accepted for inclusion in a future version of C++, probably not until 2009 or later, though. (But some vendors may jump the gun and implement it early... who knows... though using such features have a little risk, as the final version of the next C++ standard may change along the way, and if you are using the "old" definition of a specified feature, it may break when the compiler is brought into compliance with the change.) -- Chris (TeamB); Back to top Alan Bellingham Guest Posted: Tue Dec 26, 2006 5:36 am    Post subject: Re: HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ??? "Richard" <pecena (AT) cox (DOT) net> wrote: Quote: Gee, I must be missing the big picture, because the code below seems to works just fine. [snip] Quote: #define FunctionCall_MACRO(X, Y) abc(X, Y) Well, yes, you are missing the big picture. You may notice a '...' in the title of this thread that is mysteriously completely missing from your version. Alan Bellingham -- Team Thai Kingdom <url:http://www.borland.com/newsgroups/> Borland newsgroup descriptions <url:http://www.borland.com/newsgroups/netiquette.html> netiquette Back to top Duane Hebert Guest Posted: Tue Dec 26, 2006 6:27 am    Post subject: Re: HOWTO: #define macro m(x,y,...) funcxyz(x,y,...) ??? "Richard" <pecena (AT) cox (DOT) net> wrote in message news:45904fa0$2 (AT) newsgroups (DOT) borland.com... Quote: Gee, I must be missing the big picture, because the code below seems to works just fine. I think you missed the ,... bit of m(x,y,...). 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