tiutababo

I'm very new to creating externals. I have trying to do it using C++. I am trying to compile it on visual studio C++ 6.0. I have tried graham wakefield template... but that seems to open in VC++ 2005. I am not sure how to configure it so that the file works in VC++ 6.0. Does anyone have a template that opens in VC++ 6.0?

Also, I have looked the SDK tutorials. Reading some threads on the forum, some have suggested using extern "C" int main(void) instead of just void main(void) in order to code in C++. What does this do?

I have tried to change this line and simply change the code for one of the SDK tutorial but it doesn't seem to work. I got a syntax error : 'string'

Also, I have looked the SDK tutorials. Reading some threads on the forum, some have suggested using extern "C" int main(void) instead of just void main(void) in order to code in C++. What does this do? 

I have tried to change this line and simply change the code for one of the SDK tutorial but it doesn't seem to work. I got a syntax error : 'string' 

visual-c-6-0

Don't know much about windows, but my example is just plain C++, 

If the standard Max SDK projects will open in VS6 (import & convert 

or whatever it is), then you should be able to add my C++ examples to 

one of these projects and get it to compile (probably need to replace 

the old .c file and rename a thing or two). I think I did that once, 

not sure which version of visual studio it was.

Sorry I can't help further - I really don't use windows much these days.

On Feb 12, 2008, at 11:27 PM, Wei Min wrote:

> I'm very new to creating externals. I have trying to do it using C+ 

> +. I am trying to compile it on visual studio C++ 6.0. I have tried 

> graham wakefield template... but that seems to open in VC++ 2005. I 

> am not sure how to configure it so that the file works in VC++ 6.0. 

> Does anyone have a template that opens in VC++ 6.0?

> Also, I have looked the SDK tutorials. Reading some threads on the 

> forum, some have suggested using extern "C" int main(void) instead 

> of just void main(void) in order to code in C++. What does this do?

> I have tried to change this line and simply change the code for one 

> of the SDK tutorial but it doesn't seem to work. I got a syntax 

Don't know much about windows, but my example is just plain C++,  
should work in any decent compiler.

If the standard Max SDK projects will open in VS6 (import & convert  
or whatever it is), then you should be able to add my C++ examples to  
one of these projects and get it to compile (probably need to replace  
the old .c file and rename a thing or two).  I think I did that once,  
not sure which version of visual studio it was.

>
> Hi,
>
> I'm very new to creating externals. I have trying to do it using C+ 
> +. I am trying to compile it on visual studio C++ 6.0. I have tried  
> graham wakefield template... but that seems to open in VC++ 2005. I  
> am not sure how to configure it so that the file works in VC++ 6.0.  
> Does anyone have a template that opens in VC++ 6.0?
>
> Also, I have looked the SDK tutorials. Reading some threads on the  
> forum, some have suggested using extern "C" int main(void) instead  
> of just void main(void) in order to code in C++. What does this do?
>
> I have tried to change this line and simply change the code for one  
> of the SDK tutorial but it doesn't seem to work. I got a syntax  
> error : 'string'
>
> Thanks.
>
>

I don't know much about how Max objects compile in VS as I'm on Mac for 

a while, but I remember from my old days when I used to work with VS 

that the Microsoft compiler is not full compatible with the gcc compiler 

(at least this was the case a few years ago), which is used by default 

for building the Max externals (at least this is the case on Mac, as far 

as I know). Maybe you could give a try to cygwin + gcc. Again, this is 

just a suggestion which I never tried, but I think it should work pretty 

For the compiling error you get, maybe it would help if you could give a 

short extract of the source code that makes that syntax error. Without 

having a portion of the code, it would be quite hard to guess the reason 

> I'm very new to creating externals. I have trying to do it using C++. I am trying to compile it on visual studio C++ 6.0. I have tried graham wakefield template... but that seems to open in VC++ 2005. I am not sure how to configure it so that the file works in VC++ 6.0. Does anyone have a template that opens in VC++ 6.0?

> Also, I have looked the SDK tutorials. Reading some threads on the forum, some have suggested using extern "C" int main(void) instead of just void main(void) in order to code in C++. What does this do? 

> I have tried to change this line and simply change the code for one of the SDK tutorial but it doesn't seem to work. I got a syntax error : 'string' 

I don't know much about how Max objects compile in VS as I'm on Mac for 
a while, but I remember from my old days when I used to work with VS 
that the Microsoft compiler is not full compatible with the gcc compiler 
(at least this was the case a few years ago), which is used by default 
for building the Max externals (at least this is the case on Mac, as far 
as I know). Maybe you could give a try to cygwin + gcc. Again, this is 
just a suggestion which I never tried, but I think it should work pretty 
well.
For the compiling error you get, maybe it would help if you could give a 
short extract of the source code that makes that syntax error. Without 
having a portion of the code, it would be quite hard to guess the reason 
why you're getting the error.

________________
Siska Ádám
+36 (70) 207-63-85
http://www.sadam.hu/

Wei Min wrote:
> Hi,
>
> I'm very new to creating externals. I have trying to do it using C++. I am trying to compile it on visual studio C++ 6.0. I have tried graham wakefield template... but that seems to open in VC++ 2005. I am not sure how to configure it so that the file works in VC++ 6.0. Does anyone have a template that opens in VC++ 6.0?
>
> Also, I have looked the SDK tutorials. Reading some threads on the forum, some have suggested using extern "C" int main(void) instead of just void main(void) in order to code in C++. What does this do? 
>
> I have tried to change this line and simply change the code for one of the SDK tutorial but it doesn't seem to work. I got a syntax error : 'string' 
>
> Thanks.
>
>
>
>
>

VS2005 has massive issues with templates. What are the exact errors?

> Also, I have looked the SDK tutorials. Reading some threads on the forum, some have suggested using extern "C" int main(void) instead of just void main(void) in order to code in C++. What does this do?

> I have tried to change this line and simply change the code for one of the SDK tutorial but it doesn't seem to work. I got a syntax error : 'string'

VS2005 has massive issues with templates.  What are the exact errors?
wes

On Feb 12, 2008 11:27 PM, Wei Min  wrote:
>
> Hi,
>
> I'm very new to creating externals. I have trying to do it using C++. I am trying to compile it on visual studio C++ 6.0. I have tried graham wakefield template... but that seems to open in VC++ 2005. I am not sure how to configure it so that the file works in VC++ 6.0. Does anyone have a template that opens in VC++ 6.0?
>
> Also, I have looked the SDK tutorials. Reading some threads on the forum, some have suggested using extern "C" int main(void) instead of just void main(void) in order to code in C++. What does this do?
>
> I have tried to change this line and simply change the code for one of the SDK tutorial but it doesn't seem to work. I got a syntax error : 'string'
>
> Thanks.
>
>
>


Thanks all for your suggestions. I'll try it out tomorrow and see how it goes.

The reason why i am using this compiler and not gcc is because there was some kind of library that was done by earlier students which works on VS 6.0. 

as far as VC goes, i'd suggest looking at their newest free "express" version. it'll have pretty much everything you'll need to write externals. the features they took out are mostly centered around windows development (MFC and such).

(with the 'string' thing... is it an stl string? if so, 'using namespace std;')

as far as VC goes, i'd suggest looking at their newest free "express" version. it'll have pretty much everything you'll need to write externals. the features they took out are mostly centered around windows development (MFC and such).
(with the 'string' thing... is it an stl string? if so, 'using namespace std;')


vs8 express fixed several of the standards compliant discrepancies from vc6. 

you should be able to convert any vc6 project to vc8 or vc9. 

and the express versions are free and completely adequate for development, so....

yeah, exactly.
vs8 express fixed several of the standards compliant discrepancies from vc6.  
you should be able to convert any vc6 project to vc8 or vc9.  
and the express versions are free and completely adequate for development, so....


Visual Studio 6.0 was released 10 years ago in 1998. I'm not sure if

this was before or right after the ISO/IEC C++ standard was

released--but I know for a fact that this compiler is horribly broken

and compiles all kinds of broken constructs and non-standard C/C++

code. VC7 & VC8 are major improvements so you're really better off

downloading one of the free Express Editions.

> Thanks all for your suggestions. I'll try it out tomorrow and see how it goes.

> The reason why i am using this compiler and not gcc is because there was some kind of library that was done by earlier students which works on VS 6.0.

Visual Studio 6.0 was released 10 years ago in 1998. I'm not sure if
this was before or right after the ISO/IEC C++ standard was
released--but I know for a fact that this compiler is horribly broken
and compiles all kinds of broken constructs and non-standard C/C++
code. VC7 & VC8 are major improvements so you're really better off
downloading one of the free Express Editions.

On Feb 13, 2008 6:57 AM, Wei Min  wrote:
>
> Hi,
>
> Thanks all for your suggestions. I'll try it out tomorrow and see how it goes.
>
> The reason why i am using this compiler and not gcc is because there was some kind of library that was done by earlier students which works on VS 6.0.
>
>
>
>


Actually it might be a good idea to port the library to standard C++. 

IMHO if a C++ code doesn't get compiled with gcc, then there might be 

quite serious problems with it... (I wouldn't ever call a code a C++ 

source if it doesn't get compiled with gcc, anyway...)

So if I were you, I would ask for the library's source and have a look 

on it to see what's wrong (if it was made by students at your university 

then I'm pretty sure that the code is available somewhere).

Wei Min wrote:
> The reason why i am using this compiler and not gcc is because there was some kind of library that was done by earlier students which works on VS 6.0.

Actually it might be a good idea to port the library to standard C++. 
IMHO if a C++ code doesn't get compiled with gcc, then there might be 
quite serious problems with it... (I wouldn't ever call a code a C++ 
source if it doesn't get compiled with gcc, anyway...)
So if I were you, I would ask for the library's source and have a look 
on it to see what's wrong (if it was made by students at your university 
then I'm pretty sure that the code is available somewhere).

> Tangentially, my pet peeve with gcc in both C and C++ is that the following:

> generates a compiler error with gcc. The code is fine with other compilers I've used. My reading of A8.6.2 in K&RII/ANSI is that it ought to go--kArraySize is a pretty constant expression. (The fine print of A8.2 may be a loophole, however). 

I'm not quite sure I understood well what you wrote, but for me the 

int main ( int argc, char * const argv [ ] ) {

would compile and run without any problem. I'm using the built-in gcc 

compiler which ships with XCode 2.5, and I tried the above code with 

every possible compiler dialect for it, but it compiles fine with all of 

(Well, I know that the gcc for XCode is some co-production with Apple, 

so it might be different than the 'classical' gcc for UNIX/Linux, maybe 

Peter Castine wrote:
> Tangentially, my pet peeve with gcc in both C and C++ is that the following:
>
> ---
> const int kArraySize = 42;
> float myArray[kArraySize];
> ---
>
> generates a compiler error with gcc. The code is fine with other compilers I've used. My reading of A8.6.2 in K&RII/ANSI is that it ought to go--kArraySize is a pretty constant expression. (The fine print of A8.2 may be a loophole, however). 
>
>

I'm not quite sure I understood well what you wrote, but for me the 
following code:

const int kArraySize = 42;
float     myArray [ kArraySize ];

int main ( int argc, char * const argv [ ] ) {
    myArray [ 0 ] = 1.0;
    cout << myArray [ 0 ];
    return 0;
}
----

would compile and run without any problem. I'm using the built-in gcc 
compiler which ships with XCode 2.5, and I tried the above code with 
every possible compiler dialect for it, but it compiles fine with all of 
them...
(Well, I know that the gcc for XCode is some co-production with Apple, 
so it might be different than the 'classical' gcc for UNIX/Linux, maybe 
this makes the difference.)

> would compile and run without any problem. I'm using the built-in gcc

> compiler which ships with XCode 2.5, and I tried the above code with

> every possible compiler dialect for it, but it compiles fine with all of

> (Well, I know that the gcc for XCode is some co-production with Apple,

> so it might be different than the 'classical' gcc for UNIX/Linux, maybe

I think this is mostly for ObjC support and some of the infrastructure

quirks of OSX like Frameworks and Bundles. I'd be very surprised if

Apple touched the template compilation code.

>
>  would compile and run without any problem. I'm using the built-in gcc
>  compiler which ships with XCode 2.5, and I tried the above code with
>  every possible compiler dialect for it, but it compiles fine with all of
>  them...
>  (Well, I know that the gcc for XCode is some co-production with Apple,
>  so it might be different than the 'classical' gcc for UNIX/Linux, maybe
>  this makes the difference.)
>

I think this is mostly for ObjC support and some of the infrastructure
quirks of OSX like Frameworks and Bundles.  I'd be very surprised if
Apple touched the template compilation code.

Thanks everyone. I think i've decided to use the 2005 express edition for VC. I've managed to get the previous library to work on that version.

I then tried to compile graham wakefields template code on VC 2005. However, i got the error "LINK : fatal error LNK1181:cannot open input file '......externalc74supportmax-includesMaxAPI.lib'"

This means it can't find the MaxAPI.lib to link against. One thing you

"......externalc74supportmax-includesMaxAPI.lib'" with an

explicit path pointing to where your MaxAPI.lib file is. You may or

may not have to do the same thing for MaxAudio.lib for compiling MSP

On Thu, Feb 14, 2008 at 11:57 PM, Wei Min wrote:

> Thanks everyone. I think i've decided to use the 2005 express edition for VC. I've managed to get the previous library to work on that version.

> I then tried to compile graham wakefields template code on VC 2005. However, i got the error "LINK : fatal error LNK1181:cannot open input file '......externalc74supportmax-includesMaxAPI.lib'"

This means it can't find the MaxAPI.lib to link against. One thing you
can do is replace:
"......externalc74supportmax-includesMaxAPI.lib'" with an
explicit path pointing to where your MaxAPI.lib file is. You may or
may not have to do the same thing for MaxAudio.lib for compiling MSP
externals. Hope this helps.

On Thu, Feb 14, 2008 at 11:57 PM, Wei Min  wrote:
>
>  hi,
>
>  Thanks everyone. I think i've decided to use the 2005 express edition for VC. I've managed to get the previous library to work on that version.
>
>  I then tried to compile graham wakefields template code on VC 2005. However, i got the error "LINK : fatal error LNK1181:cannot open input file '......externalc74supportmax-includesMaxAPI.lib'"
>
>  why is this so?
>
>  Cheers,
>  wm
>
>
>
>
>


I've managed to get it to work. Thanks for your help. I'm really impressed by all the quick replies from the community.

However, I've a couple of questions. How can i add extra inlets/outlets?

Also. how can i program such that it takes in messages in order to decide the parameter to change? (eg. like the vst object where u can prepend the relevant parameters in order to change the value.)

I've managed to get it to work. Thanks for your help. I'm really impressed by all the quick replies from the community. 

However, I've a couple of questions. How can i add extra inlets/outlets? 

There's an entire chapter about this in WritingExternals.pdf (Chapter

6)--it lists all inlet/outlet creation routines called within the

instance creation function as defined in the API. You'll want to read

> I've managed to get it to work. Thanks for your help. I'm really impressed by all the quick replies from the community.

> However, I've a couple of questions. How can i add extra inlets/outlets?

> Also. how can i program such that it takes in messages in order to decide the parameter to change? (eg. like the vst object where u can prepend the relevant parameters in order to change the value.)

There's an entire chapter about this in WritingExternals.pdf (Chapter
6)--it lists all inlet/outlet creation routines called within the
instance creation function as defined in the API. You'll want to read
it.

On Feb 19, 2008 11:40 PM, Wei Min  wrote:
>
> Hey,
>
> I've managed to get it to work. Thanks for your help. I'm really impressed by all the quick replies from the community.
>
> However, I've a couple of questions. How can i add extra inlets/outlets?
>
> Also. how can i program such that it takes in messages in order to decide the parameter to change? (eg. like the vst object where u can prepend the relevant parameters in order to change the value.)
>
>
> Cheers,
> Wm
>


I read the chapter and looked at the examples but am still very confused. It looks so different from the graham example which uses obex and MAXCPP class. I tried to use addinx((method)t_class, index) but it doesn't seem to work.

A C++ template wrapper around a Max external is going to look different from the actual C code as published in the SDK.

Frankly, I would start from the SDK. It's not particularly difficult and the SDK gives instructions for setting up under Virtual Studio.

I'm sure Graham's C++ wrapper has some conveniences, but with most wrapper frameworks things make a lot more sense if you've gone through at least a simple example in the underlying API.

A C++ template wrapper around a Max external is going to look different from the actual C code as published in the SDK. 

I have looked and tried a couple of SDK examples. However, I want to make the external in C++ and so i'm using the template. I'm not sure how else to get started on it. The template seems to use obex.h and i'm really confused on how attr are allocated in this case as compared to a normal SDK. My understanding is that it just adds an attribute for the class and allocate memory accordingly. However, I can't seem to add inlets/outlets. Can someone explain how the C++ wrapper template work or how to add inlets/outlets on it.

I get this error check failed:getfn(in1):corrupt object. what does this mean?

or does anyone have a simple C++ external compiled with just SDK and no obex?

I've been reading the pattrsdk manual and i'm convinced that intin(this, 1); in the constructor would work. But it doesn't and I get this error "check failed:getfn(in1):corrupt object".

I'm currently rushing this project for school. I'll appreciate if someone can look through the graham wakefield's template and let me know how i can add inlets/outlets. I think i should have no problem binding methods to them. My understanding is that i just class_addmethod(c, (method)CPPMaxExample::Methodname, "in1

I'm currently rushing this project for school. I'll appreciate if someone can look through the graham wakefield's template and let me know how i can add inlets/outlets. I think i should have no problem binding methods to them. My understanding is that i just class_addmethod(c, (method)CPPMaxExample::Methodname, "in1
, A_LONG, 0);.

On Wed, Feb 27, 2008 at 12:54 AM, Wei Min wrote:

> I've been reading the pattrsdk manual and i'm convinced that intin(this, 1); in the constructor would work. But it doesn't and I get this error "check failed:getfn(in1):corrupt object".

> I'm currently rushing this project for school. I'll appreciate if someone can look through the graham wakefield's template and let me know how i can add inlets/outlets. I think i should have no problem binding methods to them. My understanding is that i just class_addmethod(c, (method)CPPMaxExample::Methodname, "in1

On Wed, Feb 27, 2008 at 12:54 AM, Wei Min  wrote:
>
>  I've been reading the pattrsdk manual and i'm convinced that intin(this, 1); in the constructor would work. But it doesn't and I get this error "check failed:getfn(in1):corrupt object".
>
>  I'm currently rushing this project for school. I'll appreciate if someone can look through the graham wakefield's template and let me know how i can add inlets/outlets. I think i should have no problem binding methods to them. My understanding is that i just class_addmethod(c, (method)CPPMaxExample::Methodname, "in1
>  , A_LONG, 0);.
>
>  Thanks.
>
>
>


It worked. I've been so stupid. All along the msg occured because i bind a method to in1 but the inlet wasn't created. This is because i was testing the wrong external. I had an object with the same name in Max startup. And so when i click on the release file, it somehow loaded the old version still.. lol

visual C++ 6.0