diff options
Diffstat (limited to 'doc/src/layout.qdoc')
| -rw-r--r-- | doc/src/layout.qdoc | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/doc/src/layout.qdoc b/doc/src/layout.qdoc index 55dfd8b..196999b 100644 --- a/doc/src/layout.qdoc +++ b/doc/src/layout.qdoc @@ -315,7 +315,11 @@ \snippet doc/src/snippets/code/doc_src_layout.qdoc 1 - First we define two functions that iterate over the layout: \c{itemAt()} + First we define \c{count()} to fetch the number of items in the list. + + \snippet doc/src/snippets/code/doc_src_layout.qdoc 2 + + Then we define two functions that iterate over the layout: \c{itemAt()} and \c{takeAt()}. These functions are used internally by the layout system to handle deletion of widgets. They are also available for application programmers. @@ -326,7 +330,7 @@ structure, we may have to spend more effort defining a linear order for the items. - \snippet doc/src/snippets/code/doc_src_layout.qdoc 2 + \snippet doc/src/snippets/code/doc_src_layout.qdoc 3 \c{addItem()} implements the default placement strategy for layout items. This function must be implemented. It is used by QLayout::add(), by the @@ -336,26 +340,26 @@ QGridLayout::addItem(), QGridLayout::addWidget(), and QGridLayout::addLayout(). - \snippet doc/src/snippets/code/doc_src_layout.qdoc 3 + \snippet doc/src/snippets/code/doc_src_layout.qdoc 4 The layout takes over responsibility of the items added. Since QLayoutItem does not inherit QObject, we must delete the items manually. The function QLayout::deleteAllItems() uses \c{takeAt()} defined above to delete all the items in the layout. - \snippet doc/src/snippets/code/doc_src_layout.qdoc 4 + \snippet doc/src/snippets/code/doc_src_layout.qdoc 5 The \c{setGeometry()} function actually performs the layout. The rectangle supplied as an argument does not include \c{margin()}. If relevant, use \c{spacing()} as the distance between items. - \snippet doc/src/snippets/code/doc_src_layout.qdoc 5 + \snippet doc/src/snippets/code/doc_src_layout.qdoc 6 \c{sizeHint()} and \c{minimumSize()} are normally very similar in implementation. The sizes returned by both functions should include \c{spacing()}, but not \c{margin()}. - \snippet doc/src/snippets/code/doc_src_layout.qdoc 6 + \snippet doc/src/snippets/code/doc_src_layout.qdoc 7 \section2 Further Notes |