- glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity;
- glViewport(0,0,ClientWidth,ClientHeight);
- glOrtho(0,clientwidth,0,clientheight,0,256);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity;
- glcolor3f(1,0,0);
- glLineWidth(2);
- glbegin(GL_lines);
- glVertex3f(0,
- 0,
- -12);
- glVertex3f(clientwidth div 2,
- clientheight div 2,
- -12);
- glend;
- SwapBuffers(DC);