probleme openGl niveau debutant

Question

salut je debute en openGL et j'ai du mal a creer une fenetre le compilateur me mets 2 erreurs : PS: les erreurs du compilateur(vc++ 6.0)sont plus bas ! // debut du code #include #include #include HWND hWnd; WNDCLASS wc; MSG msg; HDC DC; HGLRC RC; void RePaint () { glClear (GL_COLOR_BUFFER_BIT); glMatrixMode (GL_MODELVIEW); glLoadIdentity (); SwapBuffers (DC); } void InitPixelFormat (HDC hDC) { PIXELFORMATDESCRIPTOR pfd = { sizeof (PIXELFORMATDESCRIPTOR), 1, PFD_SUPPORT_OPENGL | PFD_TYPE_RGBA | PFD_DRAW_TO_WINDOW | PFD_DOUBLEBUFFER, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0 }; SetPixelFormat (hDC, ChoosePixelFormat (hDC, &pfd), &pfd); } LRESULT CALLBACK WindowProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam) { RC=wglCreateContext(DC); wgMakeCurrent(DC,RC); switch(uMsg) { case WM_CREATE: DC=GetDC(hWnd); InitPixelFormat(HDC); break; case WM_SIZE: glViewport (0,0,LOWORD (lParam),HIWORD (lParam)); glMatrixMode (GL_PROJECTION); glLoadIdentity (); gluPerspective (45,(float)(LOWORD(lParam))/(float)(HIWORD (lParam)),1,100); break; case WM_PAINT : RePaint(); break; case WM_CLOSE : wglMakeCurrent(NULL,NULL); wglDeleteContext(RC); ReleaseDC(hWnd,DC); PostQuitMessage(0); break; default : return DefWindowProc(hWnd,uMsg,wParam,lParam); break; } return 0; } int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int CmdShow) { wc.style = CS_OWNDC; wc.lpfnWndProc = WindowProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = (HBRUSH)GetStockObject(LTGRAY_BRUSH); wc.lpszMenuName = NULL; wc.lpszClassName = "OGL"; RegisterClass(&wc); hWnd=CreateWindow("OGL","Fenetre OpenGl",WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE,0,0,640,480,NULL,NULL,hInstance,NULL); while(GetMessage(&msg,NULL,0,0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return 0; } // fin du code --------------------Configuration: sdf - Win32 Debug-------------------- Compiling... sdf.cpp C:\Program Files\Microsoft Visual Studio\MyProjects\jesis\sdf.cpp(46) : error C2065: 'wgMakeCurrent' : undeclared identifier C:\Program Files\Microsoft Visual Studio\MyProjects\jesis\sdf.cpp(51) : error C2275: 'HDC' : illegal use of this type as an expression c:\program files\microsoft visual studio\vc98\include\windef.h(239) : see declaration of 'HDC' Error executing cl.exe. sdf.exe - 2 error(s), 0 warning(s) merci de me dire ou sont les erreurs ! :)

cs_payen · Answer

si c'est juste une fenetre que tu veux creer, tu te compliques mechamment la vie! Code pris sur http://www.linuxgraphic.org/section3d/openGL/didact.html

#include <GL/glut.h>

void affichage();
void clavier(unsigned char touche,int x,int y);

int main(int argc,char **argv)
{

  /* initialisation de glut et creation
     de la fenetre */
  glutInit(&argc,argv);
  glutInitDisplayMode(GLUT_RGB);
  glutInitWindowPosition(200,200);
  glutInitWindowSize(250,250);
  glutCreateWindow("ogl1");

  /* Initialisation d'OpenGL */
  glClearColor(0.0,0.0,0.0,0.0);
  glColor3f(1.0,1.0,1.0);
  glPointSize(2.0);
  /* enregistrement des fonctions de rappel */
  glutDisplayFunc(affichage);
  glutKeyboardFunc(clavier);

  /* Entree dans la boucle principale glut */
  glutMainLoop();
  return 0;
}

void affichage()
{
  /* effacement de l'image avec la couleur de fond */
  glClear(GL_COLOR_BUFFER_BIT);

  /* Dessin du polygone */
  glBegin(GL_POLYGON);
  glColor3f(1.0,0.0,0.0);
  glVertex2f(-0.5,-0.5);
  glColor3f(0.0,1.0,0.0);
  glVertex2f(0.5,-0.5);
  glColor3f(0.0,0.0,1.0);
  glVertex2f(0.5,0.5);
  glColor3f(1.0,1.0,1.0);
  glVertex2f(-0.5,0.5);
  glEnd();

  /* on force l'affichage du resultat */
  glFlush();
}

void clavier(unsigned char touche,int x,int y)
{
  switch (touche)
    {
    case 'p': /* affichage du carre plein */
      glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
      glutPostRedisplay();
      break;
    case 'f': /* affichage en mode fil de fer */
      glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
      glutPostRedisplay();
      break;
    case 's' : /* Affichage en mode sommets seuls */
      glPolygonMode(GL_FRONT_AND_BACK,GL_POINT);
      glutPostRedisplay();
      break;
    case 'q' : /*la touche 'q' permet de quitter le programme */
      exit(0);
    }
}

ca me semble plus simple a comprendre que tn premier code ...

Probleme openGl niveau debutant

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