problem adding dfu service to existing project

Question

Hi, 
 I have have one ble project which is using softdevice s110. so that i want to extend this project by adding DFU service to it like shown here
 devzone.nordicsemi.com/.../a00076.html 
 Because my project dont have bootloader_dfu file so i copied sdk11 and included in my project.
problem is i included files (ble_dfu, dfu_app_handler.c, bootloader_util) from the programfiles->keil_>pack_>noedicsemiconductor->libraries.
and also included .h files in my main.c like 
 #ifdef BLE_DFU_APP_SUPPORT
#include "ble_dfu.h"
#include "dfu_app_handler.h"
#endif // BLE_DFU_APP_SUPPORT
and added reset_prepare()
static void reset_prepare(void)
{
 uint32_t err_code;

 if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
 {
 // Disconnect from peer.
 err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
 APP_ERROR_CHECK(err_code);
 err_code = bsp_indication_set(BSP_INDICATE_IDLE);
 APP_ERROR_CHECK(err_code);
 }
 else
 {
 // If not connected, the device will be advertising. Hence stop the advertising.
 advertising_stop();
 }

 err_code = ble_conn_params_stop();
 APP_ERROR_CHECK(err_code);

 nrf_delay_ms(500);
}
 
 and copied and added all dfu initialisations from ble_app_hrs_main.c file
the problem is while compiling in keil
in some files like ble_gatts.h, ble_gap.h files, showing errors that 
 
 structure unnamed no fields
2)and also some functions are not recognising.