XGetScreenDensity 1371 magick/methods.h #define XGetScreenDensity  PrependMagickMethod(XGetScreenDensity)
XGetScreenDensity  513 magick/xwindow-private.h   *XGetScreenDensity(Display *);
XGetScreenDensity  376 wand/animate.c     image_info->density=XGetScreenDensity(display);
XGetScreenDensity  433 wand/display.c     image_info->density=XGetScreenDensity(display);