% This is the call back for the button "Remove BOX"

% --- Executes on button press in pushbutton4.

function pushbutton4_Callback(hObject, eventdata, handles)

    % hObject    handle to pushbutton4 (see GCBO)

    % eventdata  reserved - to be defined in a future version of MATLAB

    % handles    structure with handles and user data (see GUIDATA)

    % Update the Threshold based on the new end values of the slider, stops any

    % running timers, update box locations. clears the diameter plots

    script_update_Threshold_and_display;

    % handles.Bmode is false if the input data is Pulsed Doppler data

    if( handles.Bmode ~= true ), 

        handles.Message_Bar.String = "Button Deactivated! Not required for pulsed Doppler";

        return; 

    end

    if(handles.number_Box >= 1)

        %This script will remove a pair of boxes

        script_to_remove_box;

    else

        Update_remove_Box_Title;

    end

    % Update handles structure

    guidata(hObject, handles);

end