Print Page - RC File C Syntax

Title: RC File C Syntax
Post by: dedndave on October 12, 2013, 07:06:37 AM

in assembler, we can assign integer constants to symbols with EQU

CONST1 EQU 1
CONST2 EQU 2

then, add 2 of them together to form a new constant which is the summation of the original values

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CONST3 EQU CONST1+CONST2

that doesn't seem to work in an RC file

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#define  CONST1  1
#define  CONST2  2
#define  CONST3  CONST1+CONST2

it appears to assign CONST3 the string value, "CONST1+CONST2"

i tried using "const" - no luck

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const int CONST3 = CONST1+CONST2

tried this one with and without ';'

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const int CONST3=(CONST1+CONST2);

what's the correct C syntax ?

Title: Re: RC File C Syntax
Post by: jj2007 on October 12, 2013, 08:33:48 AM

From a header file:
#define ITSS_THREAD_TIMEOUT_NO_CHANGE (INFINITE - 1)

Maybe #define CONST3 (CONST1+CONST2) ?

Title: Re: RC File C Syntax
Post by: Gunther on October 12, 2013, 09:05:08 AM

Dave,

const is a C++ construct, but you can use it with C and that has advantages. The compiler has the chance for type checking. That's one side of the coin. On the other hand, the value of such a constant won't change during the program.

Quote from: dedndave on October 12, 2013, 07:06:37 AM
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const int CONST3 = CONST1+CONST2

Your CONST3 isn't constant.

Gunther

Title: Re: RC File C Syntax
Post by: dedndave on October 12, 2013, 09:07:34 AM

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#define CONST3 (CONST1+2)
probably works

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#define CONST3 (CONST1+CONST2)
doesn't

no wonder i don't like C (http://l.yimg.com/us.yimg.com/i/mesg/emoticons7/102.gif)

Title: Re: RC File C Syntax
Post by: dedndave on October 12, 2013, 09:33:22 AM

got it !!!

false alarm

Title: Re: RC File C Syntax
Post by: qWord on October 12, 2013, 09:42:56 AM

Quote from: dedndave on October 12, 2013, 07:06:37 AMwhat's the correct C syntax ?

RC is not C!

Quote from: About Resource FilesThe syntax and semantics for the RC preprocessor are similar to those of the Microsoft C/C++ compiler. However, RC supports a subset of the preprocessor directives

Title: Re: RC File C Syntax
Post by: dedndave on October 12, 2013, 09:46:49 AM

oopss - i spoke too soon
those don't work

Title: Re: RC File C Syntax
Post by: jj2007 on October 12, 2013, 04:25:27 PM

Quote from: jj2007 on October 12, 2013, 08:33:48 AM
Maybe #define CONST3 (CONST1+CONST2) ?

Works like a charm:
#define Con1 10
#define Con2 20
#define Con3 (Con1+Con2)

STRINGTABLE
BEGIN
Con2 "Нажмите на эту кнопку" ; "Click on this button" in Russian
Con3 "Добро пожаловать" ; "Welcome" in Russian
END

Title: Re: RC File C Syntax
Post by: dedndave on October 12, 2013, 08:45:39 PM

and - in the asm source, you access the resource with the value 30 ?
that doesn't work for me
i am using RC version 5.00.1823.1

Title: Re: RC File C Syntax
Post by: hutch-- on October 12, 2013, 08:50:35 PM

The reason why I have never used the double equate system is I am too lazy to write the second set and have to maintain 2 synchronised sets of equates. I LIKE numbered resources. :greenclp:

Title: Re: RC File C Syntax
Post by: dedndave on October 12, 2013, 08:58:06 PM

well - the resource compiler seems to agree with you - lol

i was just trying to keep my apples lined up with my oranges

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RT_CURSOR       EQU 1
RT_ICON         EQU 3
DIFFERENCE      EQU 11
RT_GROUP_CURSOR EQU RT_CURSOR+DIFFERENCE
RT_GROUP_ICON   EQU RT_ICON+DIFFERENCE

#define RT_CURSOR       1
#define RT_ICON         3
#define RT_GROUP_CURSOR 12
#define RT_GROUP_ICON   14

doesn't give me a warm-fuzzy feeling :(

if we're going to play that game, why not...

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RT_CURSOR       EQU 1
RT_ICON         EQU 3
RT_GROUP_CURSOR EQU 12
RT_GROUP_ICON   EQU 14

in WinUser.h....

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#define RT_GROUP_CURSOR MAKEINTRESOURCE((DWORD)RT_CURSOR+DIFFERENCE)

seems like a lot of text to add 2 values together ::)
and, RC doesn't seem to provide support for the MAKEINTRESOURCE macro

assembly language kicks ass :t
now, if we can just convince the other 99%

The MASM Forum

General => The Campus => Topic started by: dedndave on October 12, 2013, 07:06:37 AM