Q3AsciiDictIterator Class Reference
[Qt3Support module]

Detailed Description

The Q3AsciiDictIterator class provides an iterator for Q3AsciiDict collections.

Q3AsciiDictIterator is implemented as a template class. Define a template instance Q3AsciiDictIterator<X> to create a dictionary iterator that operates on Q3AsciiDict<X> (dictionary of X*).

Example:

 Q3AsciiDict<QLineEdit> fields;
 fields.insert( "forename", new QLineEdit( this ) );
 fields.insert( "surname", new QLineEdit( this ) );
 fields.insert( "age", new QLineEdit( this ) );

 fields["forename"]->setText( "Homer" );
 fields["surname"]->setText( "Simpson" );
 fields["age"]->setText( "45" );

 Q3AsciiDictIterator<QLineEdit> it( fields );
 for( ; it.current(); ++it )
     cout << it.currentKey() << ": " << it.current()->text() << endl;
 cout << endl;

 // Output (random order):
 //      age: 45
 //      surname: Simpson
 //      forename: Homer

In the example we insert some line edits into a dictionary, then iterate over the dictionary printing the strings associated with those line edits.

Note that the traversal order is arbitrary; you are not guaranteed any particular order.

Multiple iterators may independently traverse the same dictionary. A Q3AsciiDict knows about all the iterators that are operating on the dictionary. When an item is removed from the dictionary, Q3AsciiDict updates all the iterators that are referring to the removed item to point to the next item in the (arbitrary) traversal order.

See also Q3AsciiDict.

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