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C-/C++-Quelltext

#include <windows.h>
#include <GL/glee.h>

int main(int argc, char* argv[]) {
  HDC hdc;
  hdc = CreateDC("DISPLAY", NULL, NULL, NULL);
#if 0
  // GDI version

  SelectObject(hdc, CreateSolidBrush(RGB(255, 0, 0)));
  Rectangle(hdc, 100, 100, 200, 200);
  system("pause");  // pfui!!!

#else
  // OpenGL version

  PIXELFORMATDESCRIPTOR pfd;
  memset(&pfd, 0, sizeof(pfd));
  pfd.nSize = sizeof(pfd);
  pfd.nVersion = 1;
  pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
  pfd.iPixelType = PFD_TYPE_RGBA;
  pfd.cColorBits = 32;

  int pf = ChoosePixelFormat(hdc, &pfd);
  SetPixelFormat(hdc, pf, &pfd);
  DescribePixelFormat(hdc, pf, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
  HGLRC hrc = wglCreateContext(hdc);
  wglMakeCurrent(hdc, hrc);
  glClear(GL_COLOR_BUFFER_BIT);
  glBegin(GL_TRIANGLES);
  {
    glColor3f(1.0f, 0.0f, 0.0f);
    glVertex2i(0, 1);
    glColor3f(0.0f, 1.0f, 0.0f);
    glVertex2i(-1, -1);
    glColor3f(0.0f, 0.0f, 1.0f);
    glVertex2i(1, -1);
  }
  glEnd();
  glFlush();

  system("pause");  // pfui!!!


  wglMakeCurrent(NULL, NULL);
  wglDeleteContext(hrc);
#endif
  DeleteDC(hdc);
  return 0;
}