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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2013-02-01 17:25:37 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2013-02-01 17:25:37 -0600
commitac037fd7970c8bc4f3a50dda06589016a1190af7 (patch)
treedb5445cc468b218b74292170cccb4a55c60f806d /doc/html/chectdelists-example.html
parentb283cf865c1a4cc886280937ea9c78271418ac3a (diff)
downloadtqt3-ac037fd7970c8bc4f3a50dda06589016a1190af7.tar.gz
tqt3-ac037fd7970c8bc4f3a50dda06589016a1190af7.zip
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+<!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/examples/checklists/checklists.doc:4 -->
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>Listviews with Checkable Items</title>
+<style type="text/css"><!--
+fn { margin-left: 1cm; text-indent: -1cm; }
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+<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&nbsp;Classes</font></a>
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+<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>Listviews with Checkable Items</h1>
+
+
+<p>
+This example program shows how to use listviews with different types of
+checkable items.
+<p> <hr>
+<p> Header file:
+<p> <pre>/****************************************************************************
+** $Id: qt/checklists.h 3.3.8 edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for TQt. This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#ifndef CHECKLISTS_H
+#define CHECKLISTS_H
+
+#include &lt;<a href="qwidget-h.html">ntqwidget.h</a>&gt;
+
+class TQListView;
+class TQLabel;
+
+class CheckLists : public <a href="ntqwidget.html">TQWidget</a>
+{
+ <a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
+
+public:
+ CheckLists( <a href="ntqwidget.html">TQWidget</a> *parent = 0, const char *name = 0 );
+
+protected:
+ <a href="ntqlistview.html">TQListView</a> *lv1, *lv2;
+ <a href="ntqlabel.html">TQLabel</a> *label;
+
+protected slots:
+ void copy1to2();
+ void copy2to3();
+
+};
+
+#endif
+</pre>
+
+<p> <hr>
+<p> Implementation:
+<p> <pre>/****************************************************************************
+** $Id: qt/checklists.cpp 3.3.8 edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for TQt. This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "checklists.h"
+
+#include &lt;<a href="qlistview-h.html">ntqlistview.h</a>&gt;
+#include &lt;<a href="qvbox-h.html">ntqvbox.h</a>&gt;
+#include &lt;<a href="qlabel-h.html">ntqlabel.h</a>&gt;
+#include &lt;<a href="qvaluelist-h.html">ntqvaluelist.h</a>&gt;
+#include &lt;<a href="qstring-h.html">ntqstring.h</a>&gt;
+#include &lt;<a href="qpushbutton-h.html">ntqpushbutton.h</a>&gt;
+#include &lt;<a href="qlayout-h.html">ntqlayout.h</a>&gt;
+
+/*
+ * Constructor
+ *
+ * Create all child widgets of the CheckList Widget
+ */
+
+<a name="f248"></a>CheckLists::CheckLists( <a href="ntqwidget.html">TQWidget</a> *parent, const char *name )
+ : <a href="ntqwidget.html">TQWidget</a>( parent, name )
+{
+ <a href="qhboxlayout.html">TQHBoxLayout</a> *lay = new <a href="qhboxlayout.html">TQHBoxLayout</a>( this );
+<a name="x426"></a> lay-&gt;<a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
+
+ // create a widget which layouts its childs in a column
+ <a href="qvboxlayout.html">TQVBoxLayout</a> *vbox1 = new <a href="qvboxlayout.html">TQVBoxLayout</a>( lay );
+ vbox1-&gt;<a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
+
+ // First child: a Label
+<a name="x423"></a> vbox1-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( new <a href="ntqlabel.html">TQLabel</a>( "Check some items!", this ) );
+
+ // Second child: the ListView
+ lv1 = new <a href="ntqlistview.html">TQListView</a>( this );
+ vbox1-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( lv1 );
+<a name="x427"></a> lv1-&gt;<a href="ntqlistview.html#addColumn">addColumn</a>( "Items" );
+<a name="x429"></a> lv1-&gt;<a href="ntqlistview.html#setRootIsDecorated">setRootIsDecorated</a>( TRUE );
+
+ // create a list with 4 ListViewItems which will be parent items of other ListViewItems
+ <a href="ntqvaluelist.html">TQValueList</a>&lt;TQListViewItem *&gt; parentList;
+
+<a name="x434"></a> parentList.<a href="ntqvaluelist.html#append">append</a>( new <a href="qchecklistitem.html">TQCheckListItem</a>( lv1, "Parent Item 1", TQCheckListItem::CheckBoxController ) );
+ parentList.<a href="ntqvaluelist.html#append">append</a>( new <a href="qchecklistitem.html">TQCheckListItem</a>( lv1, "Parent Item 2", TQCheckListItem::CheckBoxController ) );
+ parentList.<a href="ntqvaluelist.html#append">append</a>( new <a href="qchecklistitem.html">TQCheckListItem</a>( lv1, "Parent Item 3", TQCheckListItem::CheckBoxController ) );
+ parentList.<a href="ntqvaluelist.html#append">append</a>( new <a href="qchecklistitem.html">TQCheckListItem</a>( lv1, "Parent Item 4", TQCheckListItem::CheckBoxController ) );
+
+ <a href="qlistviewitem.html">TQListViewItem</a> *item = 0;
+ unsigned int num = 1;
+ // go through the list of parent items...
+<a name="x436"></a><a name="x435"></a> for ( TQValueList&lt;TQListViewItem*&gt;::Iterator it = parentList.<a href="ntqvaluelist.html#begin">begin</a>(); it != parentList.<a href="ntqvaluelist.html#end">end</a>();
+ ( *it )-&gt;setOpen( TRUE ), ++it, num++ ) {
+ item = *it;
+ // ...and create 5 checkable child ListViewItems for each parent item
+ for ( unsigned int i = 1; i &lt;= 5; i++ )
+ (void)new <a href="qchecklistitem.html">TQCheckListItem</a>( item, TQString( "%1. Child of Parent %2" ).arg( i ).arg( num ), TQCheckListItem::CheckBox );
+ }
+
+ // Create another widget for layouting
+ <a href="qvboxlayout.html">TQVBoxLayout</a> *tmp = new <a href="qvboxlayout.html">TQVBoxLayout</a>( lay );
+ tmp-&gt;<a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
+
+ // create a pushbutton
+ <a href="ntqpushbutton.html">TQPushButton</a> *copy1 = new <a href="ntqpushbutton.html">TQPushButton</a>( " -&gt; ", this );
+ tmp-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( copy1 );
+<a name="x437"></a><a name="x433"></a> copy1-&gt;<a href="ntqwidget.html#setMaximumWidth">setMaximumWidth</a>( copy1-&gt;<a href="ntqwidget.html#sizeHint">sizeHint</a>().width() );
+ // connect the SIGNAL clicked() of the pushbutton with the SLOT copy1to2()
+ <a href="ntqobject.html#connect">connect</a>( copy1, SIGNAL( <a href="ntqbutton.html#clicked">clicked</a>() ), this, SLOT( copy1to2() ) );
+
+ // another widget for layouting
+ <a href="qvboxlayout.html">TQVBoxLayout</a> *vbox2 = new <a href="qvboxlayout.html">TQVBoxLayout</a>( lay );
+ vbox2-&gt;<a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
+
+ // and another label
+ vbox2-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( new <a href="ntqlabel.html">TQLabel</a>( "Check one item!", this ) );
+
+ // create the second listview
+ lv2 = new <a href="ntqlistview.html">TQListView</a>( this );
+ vbox2-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( lv2 );
+ lv2-&gt;<a href="ntqlistview.html#addColumn">addColumn</a>( "Items" );
+ lv2-&gt;<a href="ntqlistview.html#setRootIsDecorated">setRootIsDecorated</a>( TRUE );
+
+ // another widget needed for layouting only
+ tmp = new <a href="qvboxlayout.html">TQVBoxLayout</a>( lay );
+ tmp-&gt;<a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
+
+ // create another pushbutton...
+ <a href="ntqpushbutton.html">TQPushButton</a> *copy2 = new <a href="ntqpushbutton.html">TQPushButton</a>( " -&gt; ", this );
+ lay-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( copy2 );
+ copy2-&gt;<a href="ntqwidget.html#setMaximumWidth">setMaximumWidth</a>( copy2-&gt;<a href="ntqwidget.html#sizeHint">sizeHint</a>().width() );
+ // ...and connect its clicked() SIGNAL to the copy2to3() SLOT
+ <a href="ntqobject.html#connect">connect</a>( copy2, SIGNAL( <a href="ntqbutton.html#clicked">clicked</a>() ), this, SLOT( copy2to3() ) );
+
+ tmp = new <a href="qvboxlayout.html">TQVBoxLayout</a>( lay );
+ tmp-&gt;<a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
+
+ // and create a label which will be at the right of the window
+ label = new <a href="ntqlabel.html">TQLabel</a>( "No Item yet...", this );
+ tmp-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( label );
+}
+
+/*
+ * SLOT copy1to2()
+ *
+ * Copies all checked ListViewItems from the first ListView to
+ * the second one, and inserts them as Radio-ListViewItem.
+ */
+
+void <a name="f249"></a>CheckLists::copy1to2()
+{
+ // create an iterator which operates on the first ListView
+ <a href="qlistviewitemiterator.html">TQListViewItemIterator</a> it( lv1 );
+
+<a name="x428"></a> lv2-&gt;<a href="ntqlistview.html#clear">clear</a>();
+
+ // Insert first a controller Item into the second ListView. Always if Radio-ListViewItems
+ // are inserted into a Listview, the parent item of these MUST be a controller Item!
+ <a href="qchecklistitem.html">TQCheckListItem</a> *item = new <a href="qchecklistitem.html">TQCheckListItem</a>( lv2, "Controller", TQCheckListItem::Controller );
+<a name="x431"></a> item-&gt;<a href="qlistviewitem.html#setOpen">setOpen</a>( TRUE );
+
+ // iterate through the first ListView...
+<a name="x432"></a> for ( ; it.<a href="qlistviewitemiterator.html#current">current</a>(); ++it )
+ // ...check state of childs, and...
+ if ( it.<a href="qlistviewitemiterator.html#current">current</a>()-&gt;parent() )
+ // ...if the item is checked...
+ if ( ( (TQCheckListItem*)it.<a href="qlistviewitemiterator.html#current">current</a>() )-&gt;isOn() )
+ // ...insert a Radio-ListViewItem with the same text into the second ListView
+ (void)new <a href="qchecklistitem.html">TQCheckListItem</a>( item, it.<a href="qlistviewitemiterator.html#current">current</a>()-&gt;text( 0 ), TQCheckListItem::RadioButton );
+
+<a name="x430"></a> if ( item-&gt;<a href="qlistviewitem.html#firstChild">firstChild</a>() )
+ ( ( <a href="qchecklistitem.html">TQCheckListItem</a>* )item-&gt;<a href="qlistviewitem.html#firstChild">firstChild</a>() )-&gt;setOn( TRUE );
+}
+
+/*
+ * SLOT copy2to3()
+ *
+ * Copies the checked item of the second ListView into the
+ * Label at the right.
+ */
+
+void <a name="f250"></a>CheckLists::copy2to3()
+{
+ // create an iterator which operates on the second ListView
+ <a href="qlistviewitemiterator.html">TQListViewItemIterator</a> it( lv2 );
+
+ label-&gt;<a href="ntqlabel.html#setText">setText</a>( "No Item checked" );
+
+ // iterate through the second ListView...
+ for ( ; it.<a href="qlistviewitemiterator.html#current">current</a>(); ++it )
+ // ...check state of childs, and...
+ if ( it.<a href="qlistviewitemiterator.html#current">current</a>()-&gt;parent() )
+ // ...if the item is checked...
+ if ( ( (TQCheckListItem*)it.<a href="qlistviewitemiterator.html#current">current</a>() )-&gt;isOn() )
+ // ...set the text of the item to the label
+ label-&gt;<a href="ntqlabel.html#setText">setText</a>( it.<a href="qlistviewitemiterator.html#current">current</a>()-&gt;text( 0 ) );
+}
+
+</pre>
+
+<p> <hr>
+<p> Main:
+<p> <pre>/****************************************************************************
+** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for TQt. This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "checklists.h"
+#include &lt;<a href="qapplication-h.html">ntqapplication.h</a>&gt;
+
+int main( int argc, char **argv )
+{
+ <a href="ntqapplication.html">TQApplication</a> a( argc, argv );
+
+ CheckLists checklists;
+ checklists.<a href="ntqwidget.html#resize">resize</a>( 650, 350 );
+ checklists.<a href="ntqwidget.html#setCaption">setCaption</a>( "TQt Example - CheckLists" );
+ a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( &amp;checklists );
+ checklists.<a href="ntqwidget.html#show">show</a>();
+
+ return a.<a href="ntqapplication.html#exec">exec</a>();
+}
+</pre>
+
+<p>See also <a href="examples.html">Examples</a>.
+
+<!-- eof -->
+<p><address><hr><div align=center>
+<table width=100% cellspacing=0 border=0><tr>
+<td>Copyright &copy; 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>