void NetworkDeinit(void);

// Application entry point
int WINAPI WinMain(HINSTANCE hInstance,
    HINSTANCE hPrevInstance,
    LPTSTR lpCmdLine,
    int nCmdShow)
{
    // Load the RIL Library
    if (LoadDynRILDll(TEXT("\\DynRILDll.dll")) != ERROR_SUCCESS) {
    MessageBox(0, TEXT("Cannot load DynRILDll.dll . Try to reinstall this sample."), TEXT(""), MB_ICONERROR);
    return 0;
    }
    DebugMode(1);
    // Init the Library network component
    if (NetworkInit() != ERROR_SUCCESS) {
    UnloadDynRILDll();
    MessageBox(0, TEXT("Error using the network, does this device have a phone module?"), TEXT(""), MB_ICONERROR);
    return 0;
    }
    // Set callback for events
    SetNetworkEventCallback((tpfnCallback)PhoneCallback);
    ...
    NetworkDeinit();
    UnloadDynRILDll();
    ...