U

UDP. See User Datagram Protocol (UDP)

UI. See user interface (UI)

UIElement, 142–43, 153–54

ultimate flashlight device, 37–38

complete program, 41–42

connected device, networking. See connected flashlight device

data-logging flashlight, 50–56

data storage, 66

driving the output, 38

exporting data, 60–63

Extensive Emulator project. See MicroFlashlight project

flashlight-finder feature, implementing with threads, 46–49

flashlight-finder feature, implementing with timer, 49–50

input with events, 42–44

input-port objects, 40

interrupts, 44–46

logging the data, 56–60

SideShow application, 163–67

ultra-wide band (UWB), 89

unicast routing, 101

Uniform Resource Locator (URL), 96

unit test, 255–56

updateContent, 182–83

UpdateReceived, 74, 79

UpdateSensors method, 222, 224, 225–26

UPnP, 94

URL (Uniform Resource Locator), 96

USB connections, 12–13, 14, 15

SideShow and, 159, 171

UseLog, 58, 81

useLogExtendedWeakReference, 68, 71

Usenet, 93

User Datagram Protocol (UDP), 90, 92

TCP/IP programming, 100–01

updating HQ, connected flashlight, 115–17

user input and events, 149

binding to hardware events, 149–53

using button events, 153

user interface (UI), 10–12, 30–31

binding emulator to, 195–97

creating, 154–55

emulator, creating, 194–95

model, 243

shell, SideShow, 241

SideShow as, 157–85. See also Windows SideShow

user interface "shell," 10–12

SideShow, 241

user port range, 106