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| author | Timothy Pearson <[email protected]> | 2012-01-26 23:32:43 -0600 |
|---|---|---|
| committer | Timothy Pearson <[email protected]> | 2012-01-26 23:32:43 -0600 |
| commit | ea318d1431c89e647598c510c4245c6571aa5f46 (patch) | |
| tree | 996d29b80c30d453dda86d1a23162d441628f169 /doc/html/qptrlist.html | |
| parent | aaf89d4b48f69c9293feb187db26362e550b5561 (diff) | |
| download | tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.tar.gz tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.zip | |
Update to latest tqt3 automated conversion
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diff --git a/doc/html/qptrlist.html b/doc/html/qptrlist.html deleted file mode 100644 index 0a7fa831f..000000000 --- a/doc/html/qptrlist.html +++ /dev/null @@ -1,741 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> -<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/qptrlist.doc:41 --> -<html> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> -<title>TQPtrList Class</title> -<style type="text/css"><!-- -fn { margin-left: 1cm; text-indent: -1cm; } -a:link { color: #004faf; text-decoration: none } -a:visited { color: #672967; text-decoration: none } -body { background: #ffffff; color: black; } ---></style> -</head> -<body> - -<table border="0" cellpadding="0" cellspacing="0" width="100%"> -<tr bgcolor="#E5E5E5"> -<td valign=center> - <a href="index.html"> -<font color="#004faf">Home</font></a> - | <a href="classes.html"> -<font color="#004faf">All Classes</font></a> - | <a href="mainclasses.html"> -<font color="#004faf">Main Classes</font></a> - | <a href="annotated.html"> -<font color="#004faf">Annotated</font></a> - | <a href="groups.html"> -<font color="#004faf">Grouped Classes</font></a> - | <a href="functions.html"> -<font color="#004faf">Functions</font></a> -</td> -<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQPtrList Class Reference</h1> - -<p>The TQPtrList class is a template class that provides a list. -<a href="#details">More...</a> -<p><tt>#include <<a href="qptrlist-h.html">qptrlist.h</a>></tt> -<p>Inherits <a href="qptrcollection.html">TQPtrCollection</a>. -<p>Inherited by <a href="qobjectlist.html">TQObjectList</a>, <a href="qsortedlist.html">TQSortedList</a>, and <a href="qstrlist.html">TQStrList</a>. -<p><a href="qptrlist-members.html">List of all member functions.</a> -<h2>Public Members</h2> -<ul> -<li class=fn><a href="#TQPtrList"><b>TQPtrList</b></a> ()</li> -<li class=fn><a href="#TQPtrList-2"><b>TQPtrList</b></a> ( const TQPtrList<type> & list )</li> -<li class=fn><a href="#~TQPtrList"><b>~TQPtrList</b></a> ()</li> -<li class=fn>TQPtrList<type> & <a href="#operator-eq"><b>operator=</b></a> ( const TQPtrList<type> & list )</li> -<li class=fn>bool <a href="#operator-eq-eq"><b>operator==</b></a> ( const TQPtrList<type> & list ) const</li> -<li class=fn>bool <a href="#operator!-eq"><b>operator!=</b></a> ( const TQPtrList<type> & list ) const</li> -<li class=fn>virtual 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>bool <a href="#insert"><b>insert</b></a> ( uint index, const type * item )</li> -<li class=fn>void <a href="#inSort"><b>inSort</b></a> ( const type * item )</li> -<li class=fn>void <a href="#prepend"><b>prepend</b></a> ( const type * item )</li> -<li class=fn>void <a href="#append"><b>append</b></a> ( const type * item )</li> -<li class=fn>bool <a href="#remove"><b>remove</b></a> ( uint index )</li> -<li class=fn>bool <a href="#remove-2"><b>remove</b></a> ()</li> -<li class=fn>bool <a href="#remove-3"><b>remove</b></a> ( const type * item )</li> -<li class=fn>bool <a href="#removeRef"><b>removeRef</b></a> ( const type * item )</li> -<li class=fn>void <a href="#removeNode"><b>removeNode</b></a> ( TQLNode * node )</li> -<li class=fn>bool <a href="#removeFirst"><b>removeFirst</b></a> ()</li> -<li class=fn>bool <a href="#removeLast"><b>removeLast</b></a> ()</li> -<li class=fn>type * <a href="#take"><b>take</b></a> ( uint index )</li> -<li class=fn>type * <a href="#take-2"><b>take</b></a> ()</li> -<li class=fn>type * <a href="#takeNode"><b>takeNode</b></a> ( TQLNode * node )</li> -<li class=fn>virtual void <a href="#clear"><b>clear</b></a> ()</li> -<li class=fn>void <a href="#sort"><b>sort</b></a> ()</li> -<li class=fn>int <a href="#find"><b>find</b></a> ( const type * item )</li> -<li class=fn>int <a href="#findNext"><b>findNext</b></a> ( const type * item )</li> -<li class=fn>int <a href="#findRef"><b>findRef</b></a> ( const type * item )</li> -<li class=fn>int <a href="#findNextRef"><b>findNextRef</b></a> ( const type * item )</li> -<li class=fn>uint <a href="#contains"><b>contains</b></a> ( const type * item ) const</li> -<li class=fn>uint <a href="#containsRef"><b>containsRef</b></a> ( const type * item ) const</li> -<li class=fn>bool <a href="#replace"><b>replace</b></a> ( uint index, const type * item )</li> -<li class=fn>type * <a href="#at"><b>at</b></a> ( uint index )</li> -<li class=fn>int <a href="#at-2"><b>at</b></a> () const</li> -<li class=fn>type * <a href="#current"><b>current</b></a> () const</li> -<li class=fn>TQLNode * <a href="#currentNode"><b>currentNode</b></a> () const</li> -<li class=fn>type * <a href="#getFirst"><b>getFirst</b></a> () const</li> -<li class=fn>type * <a href="#getLast"><b>getLast</b></a> () const</li> -<li class=fn>type * <a href="#first"><b>first</b></a> ()</li> -<li class=fn>type * <a href="#last"><b>last</b></a> ()</li> -<li class=fn>type * <a href="#next"><b>next</b></a> ()</li> -<li class=fn>type * <a href="#prev"><b>prev</b></a> ()</li> -<li class=fn>void <a href="#toVector"><b>toVector</b></a> ( TQGVector * vec ) const</li> -</ul> -<h2>Important Inherited Members</h2> -<ul> -<li class=fn>bool <a href="#autoDelete"><b>autoDelete</b></a> () const</li> -<li class=fn>void <a href="#setAutoDelete"><b>setAutoDelete</b></a> ( bool enable )</li> -</ul> -<h2>Protected Members</h2> -<ul> -<li class=fn>virtual int <a href="#compareItems"><b>compareItems</b></a> ( TQPtrCollection::Item item1, TQPtrCollection::Item item2 )</li> -<li class=fn>virtual TQDataStream & <a href="#read"><b>read</b></a> ( TQDataStream & s, TQPtrCollection::Item & item )</li> -<li class=fn>virtual TQDataStream & <a href="#write"><b>write</b></a> ( TQDataStream & s, TQPtrCollection::Item item ) const</li> -</ul> -<hr><a name="details"></a><h2>Detailed Description</h2> - - -The TQPtrList class is a template class that provides a list. -<p> - -<p> -<p> <a href="qvaluelist.html">TQValueList</a> is an STL-compatible alternative to this class. -<p> Define a template instance TQPtrList<X> to create a list that -operates on pointers to X (X*). -<p> The list class is indexable and has a <a href="#at">current - index</a> and a <a href="#current">current item</a>. The -first item corresponds to index position 0. The current index is --1 if the current item is 0. -<p> Items are inserted with <a href="#prepend">prepend</a>(), <a href="#insert">insert</a>() or <a href="#append">append</a>(). Items are -removed with <a href="#remove">remove</a>(), <a href="#removeRef">removeRef</a>(), <a href="#removeFirst">removeFirst</a>() and -<a href="#removeLast">removeLast</a>(). You can search for an item using <a href="#find">find</a>(), <a href="#findNext">findNext</a>(), -<a href="#findRef">findRef</a>() or <a href="#findNextRef">findNextRef</a>(). The list can be sorted with <a href="#sort">sort</a>(). -You can count the number of occurrences of an item with <a href="#contains">contains</a>() -or <a href="#containsRef">containsRef</a>(). You can get a pointer to the current item with -<a href="#current">current</a>(), to an item at a particular index position in the list -with <a href="#at">at</a>() or to the first or last item with <a href="#getFirst">getFirst</a>() and -<a href="#getLast">getLast</a>(). You can also iterate over the list with <a href="#first">first</a>(), -<a href="#last">last</a>(), <a href="#next">next</a>() and <a href="#prev">prev</a>() (which all update current()). The list's -deletion property is set with <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(). -<p> <a name="example"></a> -Example: -<pre> - class Employee - { - public: - Employee() : sn( 0 ) { } - Employee( const <a href="qstring.html">TQString</a>& forename, const <a href="qstring.html">TQString</a>& surname, int salary ) - : fn( forename ), sn( surname ), sal( salary ) - { } - - void setSalary( int salary ) { sal = salary; } - - <a href="qstring.html">TQString</a> forename() const { return fn; } - <a href="qstring.html">TQString</a> surname() const { return sn; } - int salary() const { return sal; } - - private: - <a href="qstring.html">TQString</a> fn; - <a href="qstring.html">TQString</a> sn; - int sal; - }; - - TQPtrList<Employee> list; - list.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( TRUE ); // the list owns the objects - - list.<a href="#append">append</a>( new Employee("John", "Doe", 50000) ); - list.<a href="#append">append</a>( new Employee("Jane", "Williams", 80000) ); - list.<a href="#append">append</a>( new Employee("Tom", "Jones", 60000) ); - - Employee *employee; - for ( employee = list.<a href="#first">first</a>(); employee; employee = list.<a href="#next">next</a>() ) - cout << employee->surname().latin1() << ", " << - employee->forename().latin1() << " earns " << - employee->salary() << endl; - cout << endl; - - // very inefficient for big lists - for ( uint i = 0; i < list.<a href="#count">count</a>(); ++i ) - if ( list.<a href="#at">at</a>(i) ) - cout << list.<a href="#at">at</a>( i )->surname().latin1() << endl; - </pre> - -<p> The output is -<pre> - Doe, John earns 50000 - Williams, Jane earns 80000 - Jones, Tom earns 60000 - - Doe - Williams - Jones - </pre> - -<p> TQPtrList has several member functions for traversing the list, but -using a <a href="qptrlistiterator.html">TQPtrListIterator</a> can be more practical. Multiple list -iterators may traverse the same list, independently of each other -and of the current list item. -<p> In the example above we make the call <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(TRUE). -Enabling auto-deletion tells the list to delete items that are -removed. The default is to not delete items when they are removed -but this would cause a memory leak in the example because there -are no other references to the list items. -<p> When inserting an item into a list only the pointer is copied, not -the item itself, i.e. a <a href="shclass.html#shallow-copy">shallow copy</a>. It is possible to make the -list copy all of the item's data (deep copy) when an item is -inserted. <a href="#insert">insert</a>(), <a href="#inSort">inSort</a>() and <a href="#append">append</a>() call the virtual -function <a href="qptrcollection.html#newItem">TQPtrCollection::newItem</a>() for the item to be inserted. -Inherit a list and reimplement <a href="qptrcollection.html#newItem">newItem</a>() to have deep copies. -<p> When removing an item from a list, the virtual function -<a href="qptrcollection.html#deleteItem">TQPtrCollection::deleteItem</a>() is called. TQPtrList's default -implementation is to delete the item if auto-deletion is enabled. -<p> The virtual function <a href="#compareItems">compareItems</a>() can be reimplemented to -compare two list items. This function is called from all list -functions that need to compare list items, for instance -<a href="#remove">remove</a>(const type*). If you only want to deal with pointers, there -are functions that compare pointers instead, for instance -<a href="#removeRef">removeRef</a>(const type*). These functions are somewhat faster than -those that call compareItems(). -<p> List items are stored as <tt>void*</tt> in an internal TQLNode, which -also holds pointers to the next and previous list items. The -functions <a href="#currentNode">currentNode</a>(), <a href="#removeNode">removeNode</a>(), and <a href="#takeNode">takeNode</a>() operate -directly on the TQLNode, but they should be used with care. The -data component of the node is available through TQLNode::getData(). -<p> The <a href="qstrlist.html">TQStrList</a> class defined in <a href="qstrlist-h.html">qstrlist.h</a> is a list of <tt>char*</tt>. -It reimplements <a href="qptrcollection.html#newItem">newItem</a>(), <a href="qptrcollection.html#deleteItem">deleteItem</a>() and <a href="#compareItems">compareItems</a>(). (But -see <a href="qstringlist.html">TQStringList</a> for a list of Unicode TQStrings.) -<p> <p>See also <a href="qptrlistiterator.html">TQPtrListIterator</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="TQPtrList"></a>TQPtrList::TQPtrList () -</h3> - -<p> Constructs an empty list. - -<h3 class=fn><a name="TQPtrList-2"></a>TQPtrList::TQPtrList ( const <a href="qptrlist.html">TQPtrList</a><type> & list ) -</h3> - -<p> Constructs a copy of <em>list</em>. -<p> Each item in <em>list</em> is <a href="#append">appended</a> to this -list. Only the pointers are copied (shallow copy). - -<h3 class=fn><a name="~TQPtrList"></a>TQPtrList::~TQPtrList () -</h3> - -<p> Removes all items from the list and destroys the list. -<p> All list iterators that access this list will be reset. -<p> <p>See also <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(). - -<h3 class=fn>void <a name="append"></a>TQPtrList::append ( const type * item ) -</h3> - -<p> Inserts the <em>item</em> at the end of the list. -<p> The inserted item becomes the current list item. This is -equivalent to <tt>insert( count(), item )</tt>. -<p> <em>item</em> must not be 0. -<p> <p>See also <a href="#insert">insert</a>(), <a href="#current">current</a>(), and <a href="#prepend">prepend</a>(). - -<p>Examples: <a href="customlayout-example.html#x1500">customlayout/border.cpp</a>, <a href="customlayout-example.html#x1518">customlayout/card.cpp</a>, <a href="customlayout-example.html#x1477">customlayout/flow.cpp</a>, <a href="grapher-nsplugin-example.html#x2770">grapher/grapher.cpp</a>, <a href="listviews-example.html#x160">listviews/listviews.cpp</a>, <a href="listviews-example.html#x131">listviews/listviews.h</a>, and <a href="qwerty-example.html#x387">qwerty/qwerty.cpp</a>. -<h3 class=fn>type * <a name="at"></a>TQPtrList::at ( uint index ) -</h3> - -<p> Returns a pointer to the item at position <em>index</em> in the list, or -0 if the index is out of range. -<p> Sets the current list item to this item if <em>index</em> is valid. The -valid range is <tt>0..(count() - 1)</tt> inclusive. -<p> This function is very efficient. It starts scanning from the first -item, last item, or current item, whichever is closest to <em>index</em>. -<p> <p>See also <a href="#current">current</a>(). - -<p>Examples: <a href="customlayout-example.html#x1501">customlayout/border.cpp</a>, <a href="customlayout-example.html#x1519">customlayout/card.cpp</a>, <a href="customlayout-example.html#x1478">customlayout/flow.cpp</a>, <a href="dirview-example.html#x1697">dirview/dirview.cpp</a>, <a href="mdi-example.html#x2053">mdi/application.cpp</a>, and <a href="qwerty-example.html#x388">qwerty/qwerty.cpp</a>. -<h3 class=fn>int <a name="at-2"></a>TQPtrList::at () const -</h3> - -<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Returns the index of the current list item. The returned value is --1 if the current item is 0. -<p> <p>See also <a href="#current">current</a>(). - -<h3 class=fn>bool <a name="autoDelete"></a>TQPtrCollection::autoDelete () const -</h3> - -<p> Returns the setting of the auto-delete option. The default is FALSE. -<p> <p>See also <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(). - -<h3 class=fn>void <a name="clear"></a>TQPtrList::clear ()<tt> [virtual]</tt> -</h3> - -<p> Removes all items from the list. -<p> The removed items are deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> All list iterators that access this list will be reset. -<p> <p>See also <a href="#remove">remove</a>(), <a href="#take">take</a>(), and <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(). - -<p>Reimplemented from <a href="qptrcollection.html#clear">TQPtrCollection</a>. -<h3 class=fn>int <a name="compareItems"></a>TQPtrList::compareItems ( <a href="qptrcollection.html#Item">TQPtrCollection::Item</a> item1, <a href="qptrcollection.html#Item">TQPtrCollection::Item</a> item2 )<tt> [virtual protected]</tt> -</h3> - -<p> This virtual function compares two list items. -<p> Returns: -<ul> -<li> zero if <em>item1</em> == <em>item2</em> -<li> nonzero if <em>item1</em> != <em>item2</em> -</ul> -<p> This function returns <em>int</em> rather than <em>bool</em> so that -reimplementations can return three values and use it to sort by: -<p> <ul> -<li> 0 if <em>item1</em> == <em>item2</em> -<li> > 0 (positive integer) if <em>item1</em> > <em>item2</em> -<li> < 0 (negative integer) if <em>item1</em> < <em>item2</em> -</ul> -<p> <a href="#inSort">inSort</a>() requires that <a href="#compareItems">compareItems</a>() is implemented as described -here. -<p> This function should not modify the list because some const -functions call compareItems(). -<p> The default implementation compares the pointers. - -<h3 class=fn>uint <a name="contains"></a>TQPtrList::contains ( const type * item ) const -</h3> - -<p> Returns the number of occurrences of <em>item</em> in the list. -<p> The <a href="#compareItems">compareItems</a>() function is called when looking for the <em>item</em> -in the list. If compareItems() is not reimplemented, it is more -efficient to call <a href="#containsRef">containsRef</a>(). -<p> This function does not affect the current list item. -<p> <p>See also <a href="#containsRef">containsRef</a>() and <a href="#compareItems">compareItems</a>(). - -<h3 class=fn>uint <a name="containsRef"></a>TQPtrList::containsRef ( const type * item ) const -</h3> - -<p> Returns the number of occurrences of <em>item</em> in the list. -<p> Calling this function is much faster than <a href="#contains">contains</a>() because -contains() compares <em>item</em> with each list item using -<a href="#compareItems">compareItems</a>(), whereas his function only compares the pointers. -<p> This function does not affect the current list item. -<p> <p>See also <a href="#contains">contains</a>(). - -<h3 class=fn>uint <a name="count"></a>TQPtrList::count () const<tt> [virtual]</tt> -</h3> - -<p> Returns the number of items in the list. -<p> <p>See also <a href="#isEmpty">isEmpty</a>(). - -<p>Examples: <a href="customlayout-example.html#x1502">customlayout/border.cpp</a>, <a href="customlayout-example.html#x1520">customlayout/card.cpp</a>, <a href="customlayout-example.html#x1479">customlayout/flow.cpp</a>, <a href="dirview-example.html#x1699">dirview/dirview.cpp</a>, <a href="grapher-nsplugin-example.html#x2771">grapher/grapher.cpp</a>, <a href="mdi-example.html#x2054">mdi/application.cpp</a>, and <a href="qwerty-example.html#x389">qwerty/qwerty.cpp</a>. -<p>Reimplemented from <a href="qptrcollection.html#count">TQPtrCollection</a>. -<h3 class=fn>type * <a name="current"></a>TQPtrList::current () const -</h3> - -<p> Returns a pointer to the current list item. The current item may -be 0 (implies that the current index is -1). -<p> <p>See also <a href="#at">at</a>(). - -<h3 class=fn>TQLNode * <a name="currentNode"></a>TQPtrList::currentNode () const -</h3> - -<p> Returns a pointer to the current list node. -<p> The node can be kept and removed later using <a href="#removeNode">removeNode</a>(). The -advantage is that the item can be removed directly without -searching the list. -<p> <b>Warning:</b> Do not call this function unless you are an expert. -<p> <p>See also <a href="#removeNode">removeNode</a>(), <a href="#takeNode">takeNode</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>int <a name="find"></a>TQPtrList::find ( const type * item ) -</h3> - -<p> Finds the first occurrence of <em>item</em> in the list. -<p> If the item is found, the list sets the current item to point to -the found item and returns the index of this item. If the item is -not found, the list sets the current item to 0, the current -index to -1, and returns -1. -<p> The <a href="#compareItems">compareItems</a>() function is called when searching for the item -in the list. If compareItems() is not reimplemented, it is more -efficient to call <a href="#findRef">findRef</a>(). -<p> <p>See also <a href="#findNext">findNext</a>(), <a href="#findRef">findRef</a>(), <a href="#compareItems">compareItems</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>int <a name="findNext"></a>TQPtrList::findNext ( const type * item ) -</h3> - -<p> Finds the next occurrence of <em>item</em> in the list, starting from -the current list item. -<p> If the item is found, the list sets the current item to point to -the found item and returns the index of this item. If the item is -not found, the list sets the current item to 0, the current -index to -1, and returns -1. -<p> The <a href="#compareItems">compareItems</a>() function is called when searching for the item -in the list. If compareItems() is not reimplemented, it is more -efficient to call <a href="#findNextRef">findNextRef</a>(). -<p> <p>See also <a href="#find">find</a>(), <a href="#findNextRef">findNextRef</a>(), <a href="#compareItems">compareItems</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>int <a name="findNextRef"></a>TQPtrList::findNextRef ( const type * item ) -</h3> - -<p> Finds the next occurrence of <em>item</em> in the list, starting from -the current list item. -<p> If the item is found, the list sets the current item to point to -the found item and returns the index of this item. If the item is -not found, the list sets the current item to 0, the current -index to -1, and returns -1. -<p> Calling this function is much faster than <a href="#findNext">findNext</a>() because -findNext() compares <em>item</em> with each list item using -<a href="#compareItems">compareItems</a>(), whereas this function only compares the pointers. -<p> <p>See also <a href="#findRef">findRef</a>(), <a href="#findNext">findNext</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>int <a name="findRef"></a>TQPtrList::findRef ( const type * item ) -</h3> - -<p> Finds the first occurrence of <em>item</em> in the list. -<p> If the item is found, the list sets the current item to point to -the found item and returns the index of this item. If the item is -not found, the list sets the current item to 0, the current -index to -1, and returns -1. -<p> Calling this function is much faster than <a href="#find">find</a>() because find() -compares <em>item</em> with each list item using <a href="#compareItems">compareItems</a>(), whereas -this function only compares the pointers. -<p> <p>See also <a href="#findNextRef">findNextRef</a>(), <a href="#find">find</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>type * <a name="first"></a>TQPtrList::first () -</h3> - -<p> Returns a pointer to the first item in the list and makes this the -current list item; returns 0 if the list is empty. -<p> <p>See also <a href="#getFirst">getFirst</a>(), <a href="#last">last</a>(), <a href="#next">next</a>(), <a href="#prev">prev</a>(), and <a href="#current">current</a>(). - -<p>Examples: <a href="grapher-nsplugin-example.html#x2772">grapher/grapher.cpp</a>, <a href="listviews-example.html#x132">listviews/listviews.h</a>, and <a href="showimg-example.html#x1343">showimg/showimg.cpp</a>. -<h3 class=fn>type * <a name="getFirst"></a>TQPtrList::getFirst () const -</h3> - -<p> Returns a pointer to the first item in the list, or 0 if the list -is empty. -<p> This function does not affect the current list item. -<p> <p>See also <a href="#first">first</a>() and <a href="#getLast">getLast</a>(). - -<h3 class=fn>type * <a name="getLast"></a>TQPtrList::getLast () const -</h3> - -<p> Returns a pointer to the last item in the list, or 0 if the list -is empty. -<p> This function does not affect the current list item. -<p> <p>See also <a href="#last">last</a>() and <a href="#getFirst">getFirst</a>(). - -<h3 class=fn>void <a name="inSort"></a>TQPtrList::inSort ( const type * item ) -</h3> - -<p> Inserts the <em>item</em> at its sorted position in the list. -<p> The sort order depends on the virtual <a href="#compareItems">compareItems</a>() function. All -items must be inserted with <a href="#inSort">inSort</a>() to maintain the sorting -order. -<p> The inserted item becomes the current list item. -<p> <em>item</em> must not be 0. -<p> <b>Warning:</b> Using inSort() is slow. An alternative, especially if you -have lots of items, is to simply <a href="#append">append</a>() or <a href="#insert">insert</a>() them and -then use <a href="#sort">sort</a>(). inSort() takes up to O(n) compares. That means -inserting n items in your list will need O(n^2) compares whereas -sort() only needs O(n*log n) for the same task. So use inSort() -only if you already have a presorted list and want to insert just -a few additional items. -<p> <p>See also <a href="#insert">insert</a>(), <a href="#compareItems">compareItems</a>(), <a href="#current">current</a>(), and <a href="#sort">sort</a>(). - -<h3 class=fn>bool <a name="insert"></a>TQPtrList::insert ( uint index, const type * item ) -</h3> - -<p> Inserts the <em>item</em> at position <em>index</em> in the list. -<p> Returns TRUE if successful, i.e. if <em>index</em> is in range; -otherwise returns FALSE. The valid range is 0 to <a href="#count">count</a>() -(inclusively). The item is appended if <em>index</em> == count(). -<p> The inserted item becomes the current list item. -<p> <em>item</em> must not be 0. -<p> <p>See also <a href="#append">append</a>(), <a href="#current">current</a>(), and <a href="#replace">replace</a>(). - -<h3 class=fn>bool <a name="isEmpty"></a>TQPtrList::isEmpty () const -</h3> - -<p> Returns TRUE if the list is empty; otherwise returns FALSE. -<p> <p>See also <a href="#count">count</a>(). - -<h3 class=fn>type * <a name="last"></a>TQPtrList::last () -</h3> - -<p> Returns a pointer to the last item in the list and makes this the -current list item; returns 0 if the list is empty. -<p> <p>See also <a href="#getLast">getLast</a>(), <a href="#first">first</a>(), <a href="#next">next</a>(), <a href="#prev">prev</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>type * <a name="next"></a>TQPtrList::next () -</h3> - -<p> Returns a pointer to the item succeeding the current item. Returns -0 if the current item is 0 or equal to the last item. -<p> Makes the succeeding item current. If the current item before this -function call was the last item, the current item will be set to -0. If the current item was 0, this function does nothing. -<p> <p>See also <a href="#first">first</a>(), <a href="#last">last</a>(), <a href="#prev">prev</a>(), and <a href="#current">current</a>(). - -<p>Examples: <a href="grapher-nsplugin-example.html#x2773">grapher/grapher.cpp</a>, <a href="listviews-example.html#x133">listviews/listviews.h</a>, and <a href="showimg-example.html#x1344">showimg/showimg.cpp</a>. -<h3 class=fn>bool <a name="operator!-eq"></a>TQPtrList::operator!= ( const <a href="qptrlist.html">TQPtrList</a><type> & list ) const -</h3> - -<p> Compares this list with <em>list</em>. Returns TRUE if the lists contain -different data; otherwise returns FALSE. - -<h3 class=fn><a href="qptrlist.html">TQPtrList</a><type> & <a name="operator-eq"></a>TQPtrList::operator= ( const <a href="qptrlist.html">TQPtrList</a><type> & list ) -</h3> - -<p> Assigns <em>list</em> to this list and returns a reference to this list. -<p> This list is first cleared and then each item in <em>list</em> is <a href="#append">appended</a> to this list. Only the pointers are -copied (shallow copy) unless <a href="qptrcollection.html#newItem">newItem</a>() has been reimplemented. - -<h3 class=fn>bool <a name="operator-eq-eq"></a>TQPtrList::operator== ( const <a href="qptrlist.html">TQPtrList</a><type> & list ) const -</h3> - -<p> Compares this list with <em>list</em>. Returns TRUE if the lists contain -the same data; otherwise returns FALSE. - -<h3 class=fn>void <a name="prepend"></a>TQPtrList::prepend ( const type * item ) -</h3> - -<p> Inserts the <em>item</em> at the start of the list. -<p> The inserted item becomes the current list item. This is -equivalent to <tt>insert( 0, item )</tt>. -<p> <em>item</em> must not be 0. -<p> <p>See also <a href="#append">append</a>(), <a href="#insert">insert</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>type * <a name="prev"></a>TQPtrList::prev () -</h3> - -<p> Returns a pointer to the item preceding the current item. Returns -0 if the current item is 0 or equal to the first item. -<p> Makes the preceding item current. If the current item before this -function call was the first item, the current item will be set to -0. If the current item was 0, this function does nothing. -<p> <p>See also <a href="#first">first</a>(), <a href="#last">last</a>(), <a href="#next">next</a>(), and <a href="#current">current</a>(). - -<h3 class=fn><a href="qdatastream.html">TQDataStream</a> & <a name="read"></a>TQPtrList::read ( <a href="qdatastream.html">TQDataStream</a> & s, <a href="qptrcollection.html#Item">TQPtrCollection::Item</a> & item )<tt> [virtual protected]</tt> -</h3> - -<p> Reads a list item from the stream <em>s</em> and returns a reference to -the stream. -<p> The default implementation sets <em>item</em> to 0. -<p> <p>See also <a href="#write">write</a>(). - -<h3 class=fn>bool <a name="remove"></a>TQPtrList::remove ( uint index ) -</h3> - -<p> Removes the item at position <em>index</em> in the list. -<p> Returns TRUE if successful, i.e. if <em>index</em> is in range; -otherwise returns FALSE. The valid range is <tt>0..(count() - 1)</tt> -inclusive. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> The item after the removed item becomes the new current list item -if the removed item is not the last item in the list. If the last -item is removed, the new last item becomes the current item. -<p> All list iterators that refer to the removed item will be set to -point to the new current item. -<p> <p>See also <a href="#take">take</a>(), <a href="#clear">clear</a>(), <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(), <a href="#current">current</a>(), and <a href="#removeRef">removeRef</a>(). - -<h3 class=fn>bool <a name="remove-2"></a>TQPtrList::remove () -</h3> - -<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Removes the current list item. -<p> Returns TRUE if successful, i.e. if the current item isn't 0; -otherwise returns FALSE. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> The item after the removed item becomes the new current list item -if the removed item is not the last item in the list. If the last -item is removed, the new last item becomes the current item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the removed item will be set to -point to the new current item. -<p> <p>See also <a href="#take">take</a>(), <a href="#clear">clear</a>(), <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(), <a href="#current">current</a>(), and <a href="#removeRef">removeRef</a>(). - -<h3 class=fn>bool <a name="remove-3"></a>TQPtrList::remove ( const type * item ) -</h3> - -<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Removes the first occurrence of <em>item</em> from the list. -<p> Returns TRUE if successful, i.e. if <em>item</em> is in the list; -otherwise returns FALSE. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> The <a href="#compareItems">compareItems</a>() function is called when searching for the item -in the list. If compareItems() is not reimplemented, it is more -efficient to call <a href="#removeRef">removeRef</a>(). -<p> If <em>item</em> is NULL then the current item is removed from the list. -<p> The item after the removed item becomes the new current list item -if the removed item is not the last item in the list. If the last -item is removed, the new last item becomes the current item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the removed item will be set to -point to the new current item. -<p> <p>See also <a href="#removeRef">removeRef</a>(), <a href="#take">take</a>(), <a href="#clear">clear</a>(), <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(), <a href="#compareItems">compareItems</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>bool <a name="removeFirst"></a>TQPtrList::removeFirst () -</h3> - -<p> Removes the first item from the list. Returns TRUE if successful, -i.e. if the list isn't empty; otherwise returns FALSE. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> The first item in the list becomes the new current list item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the removed item will be set to -point to the new current item. -<p> <p>See also <a href="#removeLast">removeLast</a>(), <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(), <a href="#current">current</a>(), and <a href="#remove">remove</a>(). - -<h3 class=fn>bool <a name="removeLast"></a>TQPtrList::removeLast () -</h3> - -<p> Removes the last item from the list. Returns TRUE if successful, -i.e. if the list isn't empty; otherwise returns FALSE. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> The last item in the list becomes the new current list item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the removed item will be set to -point to the new current item. -<p> <p>See also <a href="#removeFirst">removeFirst</a>(), <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>void <a name="removeNode"></a>TQPtrList::removeNode ( TQLNode * node ) -</h3> - -<p> Removes the <em>node</em> from the list. -<p> This node must exist in the list, otherwise the program may crash. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> The first item in the list will become the new current list item. -The current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the removed item will be set to -point to the item succeeding this item or to the preceding item if -the removed item was the last item. -<p> <b>Warning:</b> Do not call this function unless you are an expert. -<p> <p>See also <a href="#takeNode">takeNode</a>(), <a href="#currentNode">currentNode</a>(), <a href="#remove">remove</a>(), and <a href="#removeRef">removeRef</a>(). - -<h3 class=fn>bool <a name="removeRef"></a>TQPtrList::removeRef ( const type * item ) -</h3> - -<p> Removes the first occurrence of <em>item</em> from the list. -<p> Returns TRUE if successful, i.e. if <em>item</em> is in the list; -otherwise returns FALSE. -<p> The removed item is deleted if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled. -<p> Equivalent to: -<pre> - if ( list.findRef( item ) != -1 ) - list.remove(); - </pre> - -<p> The item after the removed item becomes the new current list item -if the removed item is not the last item in the list. If the last -item is removed, the new last item becomes the current item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the removed item will be set to -point to the new current item. -<p> <p>See also <a href="#remove">remove</a>(), <a href="#clear">clear</a>(), <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>bool <a name="replace"></a>TQPtrList::replace ( uint index, const type * item ) -</h3> - -<p> Replaces the item at position <em>index</em> with the new <em>item</em>. -<p> Returns TRUE if successful, i.e. <em>index</em> is in the range 0 to -<a href="#count">count</a>()-1. -<p> <p>See also <a href="#append">append</a>(), <a href="#current">current</a>(), and <a href="#insert">insert</a>(). - -<h3 class=fn>void <a name="setAutoDelete"></a>TQPtrCollection::setAutoDelete ( bool enable ) -</h3> - -<p> Sets the collection to auto-delete its contents if <em>enable</em> is -TRUE and to never delete them if <em>enable</em> is FALSE. -<p> If auto-deleting is turned on, all the items in a collection are -deleted when the collection itself is deleted. This is convenient -if the collection has the only pointer to the items. -<p> The default setting is FALSE, for safety. If you turn it on, be -careful about copying the collection - you might find yourself -with two collections deleting the same items. -<p> Note that the auto-delete setting may also affect other functions -in subclasses. For example, a subclass that has a <a href="#remove">remove</a>() -function will remove the item from its data structure, and if -auto-delete is enabled, will also delete the item. -<p> <p>See also <a href="qptrcollection.html#autoDelete">autoDelete</a>(). - -<p>Examples: <a href="grapher-nsplugin-example.html#x2769">grapher/grapher.cpp</a>, <a href="scribble-example.html#x924">scribble/scribble.cpp</a>, and <a href="bigtable-example.html#x1291">table/bigtable/main.cpp</a>. -<h3 class=fn>void <a name="sort"></a>TQPtrList::sort () -</h3> - -<p> Sorts the list by the result of the virtual <a href="#compareItems">compareItems</a>() -function. -<p> The heap sort algorithm is used for sorting. It sorts n items with -O(n*log n) comparisons. This is the asymptotic optimal solution of -the sorting problem. -<p> If the items in your list support <a href="qcstring.html#operator-lt-2">operator<</a>() and <a href="#operator-eq-eq">operator==</a>(), -you might be better off with TQSortedList because it implements the -compareItems() function for you using these two operators. -<p> <p>See also <a href="#inSort">inSort</a>(). - -<h3 class=fn>type * <a name="take"></a>TQPtrList::take ( uint index ) -</h3> - -<p> Takes the item at position <em>index</em> out of the list without -deleting it (even if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> -is enabled). -<p> Returns a pointer to the item taken out of the list, or 0 if the -index is out of range. The valid range is <tt>0..(count() - 1)</tt> -inclusive. -<p> The item after the removed item becomes the new current list item -if the removed item is not the last item in the list. If the last -item is removed, the new last item becomes the current item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the taken item will be set to -point to the new current item. -<p> <p>See also <a href="#remove">remove</a>(), <a href="#clear">clear</a>(), and <a href="#current">current</a>(). - -<p>Examples: <a href="customlayout-example.html#x1503">customlayout/border.cpp</a>, <a href="customlayout-example.html#x1521">customlayout/card.cpp</a>, and <a href="customlayout-example.html#x1480">customlayout/flow.cpp</a>. -<h3 class=fn>type * <a name="take-2"></a>TQPtrList::take () -</h3> - -<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Takes the current item out of the list without deleting it (even -if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled). -<p> Returns a pointer to the item taken out of the list, or 0 if -the current item is 0. -<p> The item after the removed item becomes the new current list item -if the removed item is not the last item in the list. If the last -item is removed, the new last item becomes the current item. The -current item is set to 0 if the list becomes empty. -<p> All list iterators that refer to the taken item will be set to -point to the new current item. -<p> <p>See also <a href="#remove">remove</a>(), <a href="#clear">clear</a>(), and <a href="#current">current</a>(). - -<h3 class=fn>type * <a name="takeNode"></a>TQPtrList::takeNode ( TQLNode * node ) -</h3> - -<p> Takes the <em>node</em> out of the list without deleting its item (even -if <a href="qptrcollection.html#setAutoDelete">auto-deletion</a> is enabled). -Returns a pointer to the item taken out of the list. -<p> This node must exist in the list, otherwise the program may crash. -<p> The first item in the list becomes the new current list item. -<p> All list iterators that refer to the taken item will be set to -point to the item succeeding this item or to the preceding item if -the taken item was the last item. -<p> <b>Warning:</b> Do not call this function unless you are an expert. -<p> <p>See also <a href="#removeNode">removeNode</a>() and <a href="#currentNode">currentNode</a>(). - -<h3 class=fn>void <a name="toVector"></a>TQPtrList::toVector ( TQGVector * vec ) const -</h3> - -<p> Stores all list items in the vector <em>vec</em>. -<p> The vector must be of the same item type, otherwise the result -will be undefined. - -<h3 class=fn><a href="qdatastream.html">TQDataStream</a> & <a name="write"></a>TQPtrList::write ( <a href="qdatastream.html">TQDataStream</a> & s, <a href="qptrcollection.html#Item">TQPtrCollection::Item</a> item ) const<tt> [virtual protected]</tt> -</h3> - -<p> Writes a list item, <em>item</em> to the stream <em>s</em> and returns a -reference to the stream. -<p> The default implementation does nothing. -<p> <p>See also <a href="#read">read</a>(). - -<!-- eof --> -<hr><p> -This file is part of the <a href="index.html">TQt toolkit</a>. -Copyright © 1995-2007 -<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> -<table width=100% cellspacing=0 border=0><tr> -<td>Copyright © 2007 -<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> -<td align=right><div align=right>TQt 3.3.8</div> -</table></div></address></body> -</html> |