🔒 Locked

PIXELFORMATDESCRIPTOR Problem

Started by minyman22 Jul 3, 2007 at 3:03 PM 3 replies 950+ views

Original Post

Jul 3, 2007 at 3:03 PM

I'm currently learning OpenGL from an Ebook, but came across a problem when trying to compile some code. It highlights my PIXELFORMATDESCRIPTOR pfd and claims that "ISO C++ forbids declaration of pfd with no type". At first I thought it was a typo but after copying the source right out of the book and trying it with the downloaded source nothing works. Oh Yeah, I'm using Dev-C++, it's in a class declaration, and it's the only thing wrong in the compiler. Thanks in advance!

bubu LV

Jul 3, 2007 at 3:23 PM

This error means that compiler doesn't know what is PIXELFORMATDESCRIPTOR.
You must define it yourself, or just do #include at top of your program. windows.h header will provide this PIXELFORMATDESCRIPTOR structure.

minyman22

Author

minyman22

Jul 3, 2007 at 3:42 PM

No dice on including windows.h. It's already in there but still gets the same errors. I could define it myself, but the source from the book doesn't so I shouldn't have to.

The book was published in 2005. Could that affect it?

songho

Jul 3, 2007 at 3:53 PM

minyman22,
Try the following Dev-C++ project file;
glinfo.zip

It contains a Dev-C++ project file and source code that uses PIXELFORMATDESCRIPTOR. It may help what is wrong. If it cannot be compiled, then, the Dev-C++ is broken. If it works, then your project setting is not correct.
==song==

minyman22

Author

minyman22

Jul 3, 2007 at 10:10 PM

Yours works perfectly songho, let me play around with the project settings and make sure everythings correct.

I went and re-linked all the OpenGL libs but still coudn't get anything. I don't suppose anybody has a screenshot of the proper linking for an OpenGL app. I want to make sure I have it right.

EDIT: Found the problem. I had accidentally defined the PIXELFORMATDESCRIPTOR in my class declaration, thus creating an error. Though the error wasn't very descriptive. Thanks to all who helped.

[Edited by - minyman22 on July 3, 2007 10:10:58 PM]

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.