CentOS 7.0 - man page for qlistviewitemiterator (centos section 3qt)

Linux & Unix Commands - Search Man Pages

Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


QListViewItemIterator(3qt)					       QListViewItemIterator(3qt)

NAME
       QListViewItemIterator - Iterator for collections of QListViewItems

SYNOPSIS
       #include <qlistview.h>

   Public Members
       enum IteratorFlag { Visible = 0x00000001, Invisible = 0x00000002, Selected = 0x00000004,
	   Unselected = 0x00000008, Selectable = 0x00000010, NotSelectable = 0x00000020,
	   DragEnabled = 0x00000040, DragDisabled = 0x00000080, DropEnabled = 0x00000100,
	   DropDisabled = 0x00000200, Expandable = 0x00000400, NotExpandable = 0x00000800,
	   Checked = 0x00001000, NotChecked = 0x00002000 }
       QListViewItemIterator ()
       QListViewItemIterator ( QListViewItem * item )
       QListViewItemIterator ( QListViewItem * item, int iteratorFlags )
       QListViewItemIterator ( const QListViewItemIterator & it )
       QListViewItemIterator ( QListView * lv )
       QListViewItemIterator ( QListView * lv, int iteratorFlags )
       QListViewItemIterator & operator= ( const QListViewItemIterator & it )
       ~QListViewItemIterator ()
       QListViewItemIterator & operator++ ()
       const QListViewItemIterator operator++ ( int )
       QListViewItemIterator & operator+= ( int j )
       QListViewItemIterator & operator-- ()
       const QListViewItemIterator operator-- ( int )
       QListViewItemIterator & operator-= ( int j )
       QListViewItem * operator* ()
       QListViewItem * current () const

DESCRIPTION
       The QListViewItemIterator class provides an iterator for collections of QListViewItems.

       Construct an instance of a QListViewItemIterator, with either a QListView* or a
       QListViewItem* as argument, to operate on the tree of QListViewItems, starting from the
       argument.

       A QListViewItemIterator iterates over all the items from its starting point. This means
       that it always makes the first child of the current item the new current item. If there is
       no child, the next sibling becomes the new current item; and if there is no next sibling,
       the next sibling of the parent becomes current.

       The following example creates a list of all the items that have been selected by the user,
       storing pointers to the items in a QPtrList:

	   QPtrList<QListViewItem> lst;
	   QListViewItemIterator it( myListView );
	   while ( it.current() ) {
	       if ( it.current()->isSelected() )
		   lst.append( it.current() );
	       ++it;
	   }

       An alternative approach is to use an IteratorFlag:

	   QPtrList<QListViewItem> lst;
	   QListViewItemIterator it( myListView, QListViewItemIterator::Selected );
	   while ( it.current() ) {
	       lst.append( it.current() );
	       ++it;
	   }

       A QListViewItemIterator provides a convenient and easy way to traverse a hierarchical
       QListView.

       Multiple QListViewItemIterators can operate on the tree of QListViewItems. A QListView
       knows about all iterators operating on its QListViewItems. So when a QListViewItem gets
       removed all iterators that point to this item are updated and point to the following item
       if possible, otherwise to a valid item before the current one or to 0. Note however that
       deleting the parent item of an item that an iterator points to is not safe.

       See also QListView, QListViewItem, and Advanced Widgets.

   Member Type Documentation
QListViewItemIterator::IteratorFlag
       These flags can be passed to a QListViewItemIterator constructor (OR-ed together if more
       than one is used), so that the iterator will only iterate over items that match the given
       flags.

       QListViewItemIterator::Visible

       QListViewItemIterator::Invisible

       QListViewItemIterator::Selected

       QListViewItemIterator::Unselected

       QListViewItemIterator::Selectable

       QListViewItemIterator::NotSelectable

       QListViewItemIterator::DragEnabled

       QListViewItemIterator::DragDisabled

       QListViewItemIterator::DropEnabled

       QListViewItemIterator::DropDisabled

       QListViewItemIterator::Expandable

       QListViewItemIterator::NotExpandable

       QListViewItemIterator::Checked

       QListViewItemIterator::NotChecked

MEMBER FUNCTION DOCUMENTATION
QListViewItemIterator::QListViewItemIterator ()
       Constructs an empty iterator.

QListViewItemIterator::QListViewItemIterator ( QListViewItem * item )
       Constructs an iterator for the QListView that contains the item. The current iterator item
       is set to point to the item.

QListViewItemIterator::QListViewItemIterator ( QListViewItem * item, int iteratorFlags )
       Constructs an iterator for the QListView that contains the item using the flags
       iteratorFlags. The current iterator item is set to point to item or the next matching item
       if item doesn't match the flags.

       See also QListViewItemIterator::IteratorFlag.

QListViewItemIterator::QListViewItemIterator ( const QListViewItemIterator & it )
       Constructs an iterator for the same QListView as it. The current iterator item is set to
       point on the current item of it.

QListViewItemIterator::QListViewItemIterator ( QListView * lv )
       Constructs an iterator for the QListView lv. The current iterator item is set to point on
       the first child (QListViewItem) of lv.

QListViewItemIterator::QListViewItemIterator ( QListView * lv, int iteratorFlags )
       Constructs an iterator for the QListView lv with the flags iteratorFlags. The current
       iterator item is set to point on the first child (QListViewItem) of lv that matches the
       flags.

       See also QListViewItemIterator::IteratorFlag.

QListViewItemIterator::~QListViewItemIterator ()
       Destroys the iterator.

QListViewItem * QListViewItemIterator::current () const
       Returns iterator's current item.

       Examples:

QListViewItem * QListViewItemIterator::operator* ()
       Dereference operator. Returns a reference to the current item. The same as current().

QListViewItemIterator &; QListViewItemIterator::operator++ ()
       Prefix ++. Makes the next item the new current item and returns it. Returns 0 if the
       current item is the last item or the QListView is 0.

const QListViewItemIterator QListViewItemIterator::operator++ ( int )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Postfix ++. Makes the next item the new current item and returns the item that was the
       current item.

QListViewItemIterator &; QListViewItemIterator::operator+= ( int j )
       Sets the current item to the item j positions after the current item. If that item is
       beyond the last item, the current item is set to 0. Returns the current item.

QListViewItemIterator &; QListViewItemIterator::operator-- ()
       Prefix --. Makes the previous item the new current item and returns it. Returns 0 if the
       current item is the first item or the QListView is 0.

const QListViewItemIterator QListViewItemIterator::operator-- ( int )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Postfix --. Makes the previous item the new current item and returns the item that was the
       current item.

QListViewItemIterator &; QListViewItemIterator::operator-= ( int j )
       Sets the current item to the item j positions before the current item. If that item is
       before the first item, the current item is set to 0. Returns the current item.

QListViewItemIterator &; QListViewItemIterator::operator= ( const QListViewItemIterator & it )
       Assignment. Makes a copy of it and returns a reference to its iterator.

SEE ALSO
       http://doc.trolltech.com/qlistviewitemiterator.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the license file
       included in the distribution for a complete license statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qlistviewitemiterator.3qt) and the Qt version
       (3.3.8).

Trolltech AS				 2 February 2007	       QListViewItemIterator(3qt)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 07:43 PM.

Unix & Linux Forums Content Copyright©1993-2018. All Rights Reserved.
×
UNIX.COM Login
Username:
Password:  
Show Password





Not a Forum Member?
Forgot Password?