unboxing types, 896
underlined characters, 141, 280
Unicode, 337–38
Unified Modeling Language (UML), 14–15
Uniform Data Transfer (UDT)
IDataObject interface, 641–42
MFC support, 645–51
overview, 641
unmanaged C++ code, 925–26
unmanaged pointers, 899
unsigned type, 394
update command user interface handlers, 282, 288, 289, 312–13, 317, 321, 322, 325–26
UpdateAllViews function, 351, 367, 368
UpdateRegistry function, 612
UpdateRegistryAll function, 596
User Datagram Protocol (UDP), 808–9
user interface threads, 264, 271–72, 274
user interfaces. See also Windows common dialog boxes
creating for ManagedCWebFormWizard sample wizard, 53–54
MFC library, 35
standard application–style vs. Windows Explorer– style, 35
user-defined messages
in modeless dialog boxes, 168, 173, 175–76
sending to custom controls, 513–18
#using directive, 933