GLUT and macro redefinition errors

[AndyCav]

Hello, I hope this post is in the right section. I've just been trying to get GLUT working with Pelles C using the example code at http://www.trajectorylabs.com/gettin...engl_glut.html

This is my second attempt at getting GLUT to work after being totally baffled the first time a while back, and not managing to solve the problem by inquiring on the Pelles C forum, which to compound the problem I can't even access at the moment for some reason!

Upon compiling I get just the following two errors:
Building myfirst.obj.
C:\Program Files\PellesC\Include\gl\glut.h(19): error #1050: Macro redefinition of 'APIENTRY'.
C:\Program Files\PellesC\Include\gl\glut.h(20): error #1050: Macro redefinition of 'CALLBACK'.
*** Error code: 1 ***


As far as I can see, I have put all the right files in the right places and ticked the right boxes in the project options (e.g. allow microsoft extensions), and after searching the web for F.A.Q.s I can't find the above errors being addressed. I should stress that although being able to program some C I'm no expert at all this stuff so I could still be doing something stupid I guess.

Any thoughts? Thanks very much.

Andy

[ZbuffeR]

Macro redefinition of 'APIENTRY'.
: it looks like you have #include of other things before glut. glut.h should (almost) be the only include.

[AndyCav]

Hmm, I've just got the following (full code is in the link I posted)

#include <windows.h>
#include <gl\gl.h>
#include <gl\glut.h>

Then it goes on to prototypes.

So there's not much to go wrong with. I've tried selectively taking each one out to see what happens. Unsurprisingly it tells me to "imporve myself" after casuing more than 100 errors!

This is really frustrating, I haven't even made OpenGL draw a box yet!

Could it be something to do with Windows Vista?

[ZbuffeR]

Not Vista, it is more your tool chain that needs some tweaking.
compiler/IDE/libs ?

For simple beginner stuff I found dev-c++ is really great, as you can even get sample code projects for OpenGL win win32, with glut, SDL, whatever, directly from the IDE itself.

[AndyCav]

Tweaking the compiler and libraries and stuff... oh dear, not one of my strong points! I'm playing round with various project options at the moment but frankly I don't really know what I'm doing.

[AndyCav]

Here's a thought: if I uninstall PellesC and then reinstall, then redownload the appropriate GLUT files - can there be anything that I'd have to change... surely it should work....

[ZbuffeR]

then don't waste time :
http://www.bloodshed.net/dev/devcpp.html

Within Dev-C++, in menu Tools, Check for updates/packages, then community packs or something. I recommend the freeglut examples (modern opensource GLUT).
Then File, new project, multimedia tab, freeglut. F9. It works.

[AndyCav]

Ok ZbufferR, I'll give it a try... although I'll need to learn C++, but that was always going to be necessary eventually, trundling along as I am with plain old C.

[ZbuffeR]

No worries, despite its name, in fact Dev-C++ let you choose between C or C++, for each project.

[Stephen A]

Only problem with Dev-C++ is that it's, well, dead.

Code::Blocks is a more modern effort, by one of the original developers of Dev-C++.