This widget consists of several segment items. A segment item is similar to a discrete two state button. Any time, only one segment item can be selected. A segment item is composed of a label (text) and an icon.

This widget inherits from the layout widget, so all the layout widgets API can be used on segmentcontrol objects.

• Adding a Segmentcontrol
• Adding Items
• Using the Segmentcontrol Callbacks

• Segmentcontrol Widget API
• A Segment Control Example

This is how to add a segmentcontrol widget.

Evas_Object *segcontrol = elm_segment_control_add(parent);

We can add items to it. Here we add four items containing only text labels (no icons).

Elm_Object_Item *it;
 
elm_segment_control_item_add(segcontrol, NULL, "item1");
elm_segment_control_item_add(segcontrol, NULL, "item2");
elm_segment_control_item_add(segcontrol, NULL, "item3");
it = elm_segment_control_item_add(segcontrol, NULL, "item4");

We can insert an item at a specific position starting at 0

elm_segment_control_item_insert_at(segcontrol, NULL, "item7", 2);

or delete an item.

elm_segment_control_item_del_at(segcontrol, 2);

We can also set the selected state of an item manually

elm_segment_control_item_selected_set(it, EINA_TRUE);

or disable the whole segment control.

elm_object_disabled_set(segcontrol, EINA_TRUE);

This is how to register a callback on the “changed” signal. It is called when the user clicks on a segment item which is not previously selected. The event_info parameter is the segment item pointer.

evas_object_smart_callback_add(segcontrol, "changed", _changed_cb, data);

// Callback function for the "changed" signal
// This callback is called when the segcontrol selected item changes
static void
_changed_cb(void *data, Evas_Object *obj, void *event_info)
{
   Elm_Segment_Item *it = event_info;
   printf("The selected segment item has changed\n");
}

A Segment Control Example