H
Handle propertyof Control class, 81
of Menu class, 113
Handles keyword, and derived event handlers, 198
HasChildren property of Control object, 71
Hashtable class, 300
HatchBrush class, 491-492
hatched border for Panel control, 431-432
HeaderStyle property of ListView control, 212
helpActiveX controls for, 89
application-embedded support, 550-559
affordances, 551-553
agents, 553-559
user interface integration, 553
authoring tools, 536-537
case for, 531-532
characteristics of bad, 537-538
control-based and form-based, 542-543
creating, 548-550
database-based, 545-546
invoking programmatically, 543-550
task-based, 546-548
text on StatusBar, 252-253
types, 532-537
HTML Help, 534-535
MS Help 535-536
WinHelp, 532
WinHelp 533-534
HelpButton property of Form class, 145
helper classes, 25
303-307
HelpIconProvider.vb file, 321
HelpNamespace property, 541
HelpNavigator enumeration, 540
HelpProvider control, 539-543
help without, 544-545
HelpTest project, 543
hiding Panel control, 431
history of user interface design, 3-10
command-line, 3-5
GUI, 8-10
menu-driven model, 7-8
question-answer model, 5-7
hit testing, 494-497
nonrectangular shapes, 496-497
HKEY_CURRENT_USER, 151
HKEY_LOCAL_MACHINE, 151
.hlp file, 533
holes, forms with, 192
HorizontalScrollbar property for list controls, 99
hot tracking, button support for, 190
HotTrack property of TabControl, 255
HotTrackButton, 512-518
HotTracking property of TreeView control, 228
HoverSelection property of ListView control, 211
HTMLfor color names, 66
restrictions, 20
HTML Help, 534-535
hyperlinks, LinkLabel control for, 91-94