pub fn checked_id(&self) -> i32 {
        let (obj_data, funcs) = self.get_button_group_obj_funcs();
        unsafe {
            let ret_val = ((*funcs).checked_id)(obj_data);
            ret_val
        }
    }
///
/// Returns the id of the checkedButton(), or -1 if no button is checked.
///
/// **See also:** [`set_id()`]
Returns the id of the checkedButton(), or -1 if no button is checked.
Returns the id of the checkedButton () or - 1 if no button is checked .
pub fn checked_id(&self) -> i32 {
        let (obj_data, funcs) = self.get_button_group_obj_funcs();
        unsafe {
            let ret_val = ((*funcs).checked_id)(obj_data);
            ret_val
        }
    }
pub fn checked_id ( & self ) -> i32 { let ( obj_data , funcs ) = self . get_button_group_obj_funcs ( ) ; unsafe { let ret_val = ( ( * funcs ) . checked_id ) ( obj_data ) ; ret_val } }
Returns the id of the checkedButton(), or -1 if no button is checked.
Returns the id of the checkedButton () or - 1 if no button is checked .
&self
&self