H

handling errors, reading and writing files, 244 has_key() (dict), 96 hasattr(), 39, 102,218,336 hasChildren() (QAbstractItemModel), 433

hasFeature() (QSqlDriver), 449 hasFocus() (QWidget), 330, 426 hasFormat() (QMimeData), 314, 316 hash, Perl; see dict type hasHtml() ©Clipboard), 312 hasMouseTracking() (QWidget), 308 hasSelection() (QTextCursor), 385 headerData() (QAbstractItemModel),

427,430,433, 503 height() (QWidget), 330 help(), 37, 39 hex(),40

hide() (QWidget), 280, 330 hiding dialogs, 118,121,160 hiding widgets, 277, 280 high-level communication mechanisms; see signals and slots homePath() (QDir), 545 horizontal layout; see QHBoxLayout horizontal lines; see QFrame horizontalHeader() (QTableView), 463, 464

hotspot, icon, 316 HTML (Hyper-Text Markup Language), 114, 117, 168, 188, 311, 349,381, 396,397,401,488,511, 552

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