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< td align = "right" valign = "center" > < img src = "logo32.png" align = "right" width = "64" height = "32" border = "0" > < / td > < / tr > < / table > < h1 align = center > TQAsciiDictIterator Class Reference< / h1 >
< p > The TQAsciiDictIterator class provides an iterator for TQAsciiDict collections.
< a href = "#details" > More...< / a >
< p > < tt > #include < < a href = "tqasciidict-h.html" > tqasciidict.h< / a > > < / tt >
< p > < a href = "tqasciidictiterator-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
< ul >
< li class = fn > < a href = "#TQAsciiDictIterator" > < b > TQAsciiDictIterator< / b > < / a > ( const TQAsciiDict< type> & dict )< / li >
< li class = fn > < a href = "#~TQAsciiDictIterator" > < b > ~TQAsciiDictIterator< / b > < / a > ()< / li >
< li class = fn > uint < a href = "#count" > < b > count< / b > < / a > () const< / li >
< li class = fn > bool < a href = "#isEmpty" > < b > isEmpty< / b > < / a > () const< / li >
< li class = fn > type * < a href = "#toFirst" > < b > toFirst< / b > < / a > ()< / li >
< li class = fn > < a href = "#operator-type-*" > < b > operator type *< / b > < / a > () const< / li >
< li class = fn > type * < a href = "#current" > < b > current< / b > < / a > () const< / li >
< li class = fn > const char * < a href = "#currentKey" > < b > currentKey< / b > < / a > () const< / li >
< li class = fn > type * < a href = "#operator()" > < b > operator()< / b > < / a > ()< / li >
< li class = fn > type * < a href = "#operator++" > < b > operator++< / b > < / a > ()< / li >
< li class = fn > type * < a href = "#operator+-eq" > < b > operator+=< / b > < / a > ( uint jump )< / li >
< / ul >
< hr > < a name = "details" > < / a > < h2 > Detailed Description< / h2 >
The TQAsciiDictIterator class provides an iterator for < a href = "tqasciidict.html" > TQAsciiDict< / a > collections.
< p >
< p > TQAsciiDictIterator is implemented as a template class. Define a
template instance TQAsciiDictIterator< X> to create a dictionary
iterator that operates on TQAsciiDict< X> (dictionary of X*).
< p > Example:
< pre >
< a href = "tqasciidict.html" > TQAsciiDict< / a > < TQLineEdit> fields;
fields.< a href = "tqasciidict.html#insert" > insert< / a > ( "forename", new < a href = "tqlineedit.html" > TQLineEdit< / a > ( this ) );
fields.< a href = "tqasciidict.html#insert" > insert< / a > ( "surname", new < a href = "tqlineedit.html" > TQLineEdit< / a > ( this ) );
fields.< a href = "tqasciidict.html#insert" > insert< / a > ( "age", new < a href = "tqlineedit.html" > TQLineEdit< / a > ( this ) );
fields["forename"]-> setText( "Homer" );
fields["surname"]-> setText( "Simpson" );
fields["age"]-> setText( "45" );
TQAsciiDictIterator< TQLineEdit> it( fields );
for( ; it.< a href = "#current" > current< / a > (); ++it )
cout < < it.< a href = "#currentKey" > currentKey< / a > () < < ": " < < it.< a href = "#current" > current< / a > ()-> text() < < endl;
cout < < endl;
// Output (random order):
// age: 45
// surname: Simpson
// forename: Homer
< / pre >
In the example we insert some line edits into a dictionary, then
iterate over the dictionary printing the strings associated with
those line edits.
< p > Note that the traversal order is arbitrary; you are not guaranteed
any particular order.
< p > Multiple iterators may independently traverse the same dictionary.
A < a href = "tqasciidict.html" > TQAsciiDict< / a > knows about all the iterators that are operating on
the dictionary. When an item is removed from the dictionary,
TQAsciiDict updates all the iterators that are referring to the
removed item to point to the next item in the (arbitrary)
traversal order.
< p > < p > See also < a href = "tqasciidict.html" > TQAsciiDict< / a > , < a href = "collection.html" > Collection Classes< / a > , and < a href = "tools.html" > Non-GUI Classes< / a > .
< hr > < h2 > Member Function Documentation< / h2 >
< h3 class = fn > < a name = "TQAsciiDictIterator" > < / a > TQAsciiDictIterator::TQAsciiDictIterator ( const < a href = "tqasciidict.html" > TQAsciiDict< / a > < type> & dict )
< / h3 >
< p > Constructs an iterator for < em > dict< / em > . The current iterator item is
set to point on the first item in the < em > dict< / em > .
< h3 class = fn > < a name = "~TQAsciiDictIterator" > < / a > TQAsciiDictIterator::~TQAsciiDictIterator ()
< / h3 >
< p > Destroys the iterator.
< h3 class = fn > uint < a name = "count" > < / a > TQAsciiDictIterator::count () const
< / h3 >
< p > Returns the number of items in the dictionary this iterator
operates over.
< p > < p > See also < a href = "#isEmpty" > isEmpty< / a > ().
< h3 class = fn > type * < a name = "current" > < / a > TQAsciiDictIterator::current () const
< / h3 >
< p > Returns a pointer to the current iterator item.
< h3 class = fn > const char * < a name = "currentKey" > < / a > TQAsciiDictIterator::currentKey () const
< / h3 >
< p > Returns a pointer to the key for the current iterator item.
< h3 class = fn > bool < a name = "isEmpty" > < / a > TQAsciiDictIterator::isEmpty () const
< / h3 >
< p > Returns TRUE if the dictionary is empty, i.e. < a href = "#count" > count< / a > () == 0,
otherwise returns FALSE.
< p > < p > See also < a href = "#count" > count< / a > ().
< h3 class = fn > < a name = "operator-type-*" > < / a > TQAsciiDictIterator::operator type * () const
< / h3 >
< p > Cast operator. Returns a pointer to the current iterator item.
Same as < a href = "#current" > current< / a > ().
< h3 class = fn > type * < a name = "operator()" > < / a > TQAsciiDictIterator::operator() ()
< / h3 >
< p > Makes the succeeding item current and returns the original current
item.
< p > If the current iterator item was the last item in the dictionary
or if it was 0, 0 is returned.
< h3 class = fn > type * < a name = "operator++" > < / a > TQAsciiDictIterator::operator++ ()
< / h3 >
< p > Prefix ++ makes the succeeding item current and returns the new
current item.
< p > If the current iterator item was the last item in the dictionary
or if it was 0, 0 is returned.
< h3 class = fn > type * < a name = "operator+-eq" > < / a > TQAsciiDictIterator::operator+= ( uint jump )
< / h3 >
< p > Sets the current item to the item < em > jump< / em > positions after the
current item, and returns a pointer to that item.
< p > If that item is beyond the last item or if the dictionary is
empty, it sets the current item to 0 and returns 0.
< h3 class = fn > type * < a name = "toFirst" > < / a > TQAsciiDictIterator::toFirst ()
< / h3 >
< p > Sets the current iterator item to point to the first item in the
dictionary and returns a pointer to the item. If the dictionary is
empty it sets the current item to 0 and returns 0.
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