XGetScreenDensity 1381 magick/methods.h #define XGetScreenDensity  PrependMagickMethod(XGetScreenDensity)
XGetScreenDensity  495 magick/xwindow-private.h   *XGetScreenDensity(Display *);
XGetScreenDensity  378 wand/animate.c     image_info->density=XGetScreenDensity(display);
XGetScreenDensity  435 wand/display.c     image_info->density=XGetScreenDensity(display);