Slider in EDC file

This code snippet shows how to define a slider in .edc file and read it's value from C code.
//part definition in .edc file
part { 
    name: "slider";
    type: EXTERNAL;
    source: "elm/slider";
    description { state: "default" 0;
       align: 0 0;
       rel1.relative: 0.1 0.4;
       rel2.relative: 0.9 0.5;
       params {
          string: "style" "default";
       }
    }
 }
 
//reading slider's value from C code
Evas_Object *slider = edje_object_part_external_object_get(elm_layout_edje_get(ad->layout), "slider");
double value = elm_slider_value_get(slider);

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