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glshaders.h Example File
demos/boxes/glshaders.h

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 #ifndef GLSHADERS_H
 #define GLSHADERS_H

 //#include <GL/glew.h>
 #include "glextensions.h"

 #include <QtGui>
 #include <QtOpenGL>

 #include "vector.h"

 class GLShader
 {
 public:
     friend class GLProgram;
     virtual ~GLShader();
     bool failed() const {return m_failed;}
     QString log();
 protected:
     GLShader(const char *data, int size, GLenum shaderType);
     GLShader(const QString& fileName, GLenum shaderType);

     GLhandleARB m_shader;
     bool m_compileError;
     bool m_failed;
 };

 class GLVertexShader : public GLShader
 {
 public:
     GLVertexShader(const char *data, int size);
     GLVertexShader(const QString& fileName);
 };

 class GLFragmentShader : public GLShader
 {
 public:
     GLFragmentShader(const char *data, int size);
     GLFragmentShader(const QString& fileName);
 };

 class GLProgram
 {
 public:
     GLProgram();
     ~GLProgram();
     void attach(const GLShader &shader);
     void detach(const GLShader &shader);
     void bind();
     void unbind();
     bool failed();
     QString log();
     bool hasParameter(const QString& name);
     // use program before setting values
     void setInt(const QString& name, int value);
     void setFloat(const QString& name, float value);
     void setColor(const QString& name, QRgb value);
     void setMatrix(const QString& name, const gfx::Matrix4x4f &mat);
     // TODO: add a bunch of set-functions for different types.
 private:
     GLhandleARB m_program;
     bool m_linked;
     bool m_linkError;
     bool m_failed;
 };

 #endif