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How to import iml from other class? [message #8724]

Tue, 27 March 2007 22:37

guido
Messages: 169
Registered: April 2006

Experienced Member

How to use .iml from other class?

If I have App.iml defined in App.cpp/hpp and a class Splash.cpp/hpp, what goes there precisely to use App.iml?
The GUI-tutorial answers this question sparsely with remarks about iml_header.h and iml_source.h. But I'm pulling my hairs out trying the put the headers and defines for App.iml in the proper place of Splash class files, going back an forward between undefined and redefined identifiers.

Guido

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Re: How to import iml from other class? [message #8726 is a reply to message #8724]

Wed, 28 March 2007 09:43

mirek
Messages: 14160
Registered: November 2005

Ultimate Member

guido wrote on Tue, 27 March 2007 16:37

If you are using images just in single file, just put:

#define  IMAGEFILE  <iml/image.iml>
#define  IMAGECLASS MyImg
#include <Draw/iml.h>

at the beginning.

If you are using it across more files, you will need to declare in header:

#define  IMAGEFILE  <iml/image.iml>
#define  IMAGECLASS MyImg
#include <Draw/iml_header.h>

and also "define somewhere", in some .cpp (but only one!) file:

#define  IMAGEFILE  <iml/image.iml>
#define  IMAGECLASS MyImg
#include <Draw/iml_source.h>

Note this is the same as declaring "extern int myint" in .h and then defining it "int myint" in .cpp.

Mirek

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Re: How to import iml from other class? [message #8740 is a reply to message #8726]

Wed, 28 March 2007 19:25

guido
Messages: 169
Registered: April 2006

Experienced Member

Yes, I tried this. But then, I need to import Splash.hpp in App.cpp and this results in a redefinition error:

/home/guido/upp/uppsrc/Draw/iml_header.h:13: error: redefinition of �class CaterImg�
/home/guido/upp/uppsrc/Draw/iml_header.h:13: error: previous definition of �class CaterImg�

I based my app on Werner's template. I deleted the U++ logo file and try to use a big version of the app_icon for the splash image.

Sorry for being dumb Confused

upp is great in many ways, but for all that opaque (to me) preprocessor magic. Feels pretty low-level, for now.
Maybe I get the hang of it and see it differently, then.

Guido

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Re: How to import iml from other class? [message #8741 is a reply to message #8740]

Wed, 28 March 2007 19:32

mirek
Messages: 14160
Registered: November 2005

Ultimate Member

guido wrote on Wed, 28 March 2007 13:25

This looks like the header is being included twice.

Quote:

upp is great in many ways, but for all that opaque (to me) preprocessor magic. Feels pretty low-level, for now.
Maybe I get the hang of it and see it differently, then.

Well, you can have either preprocessor magic, or external tools that do the same job less transparently - you would still have to include something and at least link in something.

BTW, a good way to get hand on it (and also, for us, to debug this stuff) is "Preprocess file" command in the build menu. I think it can help pretty well in this case too.

Mirek

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