[GtkGLExt] gtkglextmm problem

["Martin (OpenGeoMap)" <martin opengeomap org>]

hi!,

i put here a discussion we have in the gtkmm mailing list:
We are talking about the source code you have here:
http://gtkglext.sourceforge.net/reference/gtkglextmm/examples.html

It doesn work for me...
___________________________________
Dave Foster escribió:
> I don't currently have gtkglextmm installed. It would be helpful to me 
> and everyone else on the list if you would post the error messages you 
> get when compiling your latest source here, since I assume it is 
> different than in the first mail you sent. I ask becuase it might not 
> necessarily be a gtkglextmm problem.
The latest source file compile fine. Itś a example i have create by 
myself now...

I don know but the doc is for gtkglextmm.1.01 and in my computer i have 
gtkglextmm.1.2
the 1.2 package is ubuntu repositories and really easy to install or the 
latest source code:
http://sourceforge.net/project/showfiles.php?group_id=54333&package_id=53707&release_id=397294 


This is the latest documentation is for 1.0.1:
http://gtkglext.sourceforge.net/reference/gtkglextmm/

could be a version problem?


regards.

> dave
>
> On Thu, Aug 21, 2008 at 3:40 PM, Martin (OpenGeoMap) 
> <martin opengeomap org <mailto:martin opengeomap org>> wrote:
>
> I write this source code and work:
>
> g++ main2.cc `pkg-config --cflags --libs gtkglextmm-x11-1.2`
>
> It seems that the samples from here are bad¿?¿?
>
> http://gtkglext.sourceforge.net/reference/gtkglextmm/examples.html
>
> #include <iostream>
> #include <cstdlib>
> #include <gtkmm.h>
> #include <GL/glu.h>
> #include <gtkglmm.h>
>
> #include <math.h>
>
> float boxv[][3] = {
> { -0.5, -0.5, -0.5 },
> { 0.5, -0.5, -0.5 },
> { 0.5, 0.5, -0.5 },
> { -0.5, 0.5, -0.5 },
> { -0.5, -0.5, 0.5 },
> { 0.5, -0.5, 0.5 },
> { 0.5, 0.5, 0.5 },
> { -0.5, 0.5, 0.5 }
> };
> #define ALPHA 0.5
>
> static float ang = 30.;
>
>
> class glsample : public Gtk::GL::DrawingArea{
> public:
> glsample();
> virtual ~glsample();
>
> protected:
> virtual void on_realize();
> virtual bool on_configure_event(GdkEventConfigure* event);
> virtual bool on_expose_event(GdkEventExpose* event);
> };
>
>
> glsample::glsample(){
>
> Glib::RefPtr<Gdk::GL::Config> glconfig;
>
> glconfig = Gdk::GL::Config::create(Gdk::GL::MODE_RGB |
> Gdk::GL::MODE_DEPTH | Gdk::GL::MODE_DOUBLE);
>
> set_gl_capability(glconfig);
>
> }
>
> glsample::~glsample(){
> }
>
> void glsample::on_realize(){
> Gtk::GL::DrawingArea::on_realize();
>
> //get gl::window
> Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window();
>
> glwindow->gl_begin(get_gl_context());
> glwindow->gl_begin(get_gl_context());
> glClearColor(1.0, 0.0, 0.0, 1.0);
> glMatrixMode(GL_PROJECTION);
> glOrtho(-0.5, 0.5, -0.5, 0.5, -0.1, 0.1);
> glColor3f(1.0f, 0.0f, 0.0f);
> glDisable(GL_DEPTH_TEST);
>
>
> glwindow->gl_end();
> }
>
> bool glsample::on_configure_event(GdkEventConfigure* event){
>
> //get gl::window
> Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window();
>
> glwindow->gl_begin(get_gl_context());
> glViewport(0, 0, GLsizei(get_width()), GLsizei(get_height()));
>
> glwindow->gl_end();
>
> return true;
> }
>
> bool glsample::on_expose_event(GdkEventExpose* event){
>
> //get gl::window
> Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window();
>
> glwindow->gl_begin(get_gl_context());
>
> glClear(GL_COLOR_BUFFER_BIT);
>
> glwindow->swap_buffers();
> glBegin (GL_TRIANGLES);
> glIndexi (0);
> glColor3f (1.0f, 0.0f, 0.0f);
> glVertex2i (0, 1);
> glIndexi (0);
> glColor3f (0.0f, 1.0f, 0.0f);
> glVertex2i (-1, -1);
> glIndexi (0);
> glColor3f (0.0f, 0.0f, 1.0f);
> glVertex2i (1, -1);
> glEnd ();
> // Error detection.
> GLenum error = glGetError();
> if(error != GL_NO_ERROR)
> {
> std::cerr << "\n OpenGL error: " << gluErrorString(error);
> std::cerr.flush();
> }
> //main loop
> glwindow->gl_end();
> glwindow->swap_buffers ();
>
> return true;
> }
>
> int main(int argc, char *argv[]){
> Gtk::Main init (argc, argv);
> Gtk::GL::init (argc, argv);
>
> Gtk::Window window;
> window.set_title ("Widget Demo");
>
> glsample drawing;
> window.add (drawing);
>
> window.show_all ();
>
> Gtk::Main::run (window);
>
> return EXIT_SUCCESS;
>
> }