title: Gnuplot, c++ from windows. command window opens and closes
body: <p>I have the following, and no matter what i try a command window is opened and closed again. No plots are shown, no files are written. Anyone who have a solution to use gnuplot from c++. I have both 4.4 and 4.6rc1 available.</p>
  
  <pre><code>#ifdef WIN32
    gp = _popen("C:\Program Files (x86)\gnuplot\bin\pgnuplot.exe", "w");
  #else
    gp = popen("gnuplot -persist", "w");
  #endif
  
  
   if (gp == NULL)
         return -1;
  
    /* fprintf(gp, "unset border\n");
    fprintf(gp, "set clip\n");
    fprintf(gp, "set polar\n");
    fprintf(gp, "set xtics axis nomirror\n");
    fprintf(gp, "set ytics axis nomirror\n");
    fprintf(gp, "unset rtics\n");
    fprintf(gp, "set samples 160\n");
    fprintf(gp, "set zeroaxis");
      fprintf(gp, "  set trange [0:2*pi]");*/
  
  
    fprintf(gp, "set term png\n");
    fprintf(gp, "set output \"c:\\printme.png\"");
    fprintf(gp, "plot .5,1,1.5\n");
     fprintf(gp, "pause -1\n");
  
       fflush(gp);
  </code></pre>