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257 lines
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257 lines
16 KiB
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/widgets/tqlistview.cpp:5987 -->
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<title>TQCheckListItem Class</title>
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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>TQCheckListItem Class Reference</h1>
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<p>The TQCheckListItem class provides checkable list view items.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="tqlistview-h.html">tqlistview.h</a>></tt>
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<p>Inherits <a href="tqlistviewitem.html">TQListViewItem</a>.
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<p><a href="tqchecklistitem-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>enum <a href="#Type-enum"><b>Type</b></a> { RadioButton, CheckBox, Controller, RadioButtonController = Controller, CheckBoxController }</li>
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<li class=fn>enum <a href="#ToggleState-enum"><b>ToggleState</b></a> { Off, NoChange, On }</li>
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<li class=fn><a href="#TQCheckListItem"><b>TQCheckListItem</b></a> ( TQCheckListItem * parent, const TQString & text, Type tt = RadioButtonController )</li>
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<li class=fn><a href="#TQCheckListItem-2"><b>TQCheckListItem</b></a> ( TQCheckListItem * parent, TQListViewItem * after, const TQString & text, Type tt = RadioButtonController )</li>
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<li class=fn><a href="#TQCheckListItem-3"><b>TQCheckListItem</b></a> ( TQListViewItem * parent, const TQString & text, Type tt = RadioButtonController )</li>
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<li class=fn><a href="#TQCheckListItem-4"><b>TQCheckListItem</b></a> ( TQListViewItem * parent, TQListViewItem * after, const TQString & text, Type tt = RadioButtonController )</li>
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<li class=fn><a href="#TQCheckListItem-5"><b>TQCheckListItem</b></a> ( TQListView * parent, const TQString & text, Type tt = RadioButtonController )</li>
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<li class=fn><a href="#TQCheckListItem-6"><b>TQCheckListItem</b></a> ( TQListView * parent, TQListViewItem * after, const TQString & text, Type tt = RadioButtonController )</li>
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<li class=fn><a href="#TQCheckListItem-7"><b>TQCheckListItem</b></a> ( TQListViewItem * parent, const TQString & text, const TQPixmap & p )</li>
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<li class=fn><a href="#TQCheckListItem-8"><b>TQCheckListItem</b></a> ( TQListView * parent, const TQString & text, const TQPixmap & p )</li>
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<li class=fn><a href="#~TQCheckListItem"><b>~TQCheckListItem</b></a> ()</li>
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<li class=fn>virtual void <a href="#paintCell"><b>paintCell</b></a> ( TQPainter * p, const TQColorGroup & cg, int column, int width, int align )</li>
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<li class=fn>virtual void <a href="#paintFocus"><b>paintFocus</b></a> ( TQPainter * p, const TQColorGroup & cg, const TQRect & r )</li>
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<li class=fn>virtual void <a href="#setOn"><b>setOn</b></a> ( bool b )</li>
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<li class=fn>bool <a href="#isOn"><b>isOn</b></a> () const</li>
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<li class=fn>Type <a href="#type"><b>type</b></a> () const</li>
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<li class=fn>TQString <a href="#text"><b>text</b></a> () const</li>
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<li class=fn>void <a href="#setTristate"><b>setTristate</b></a> ( bool b )</li>
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<li class=fn>bool <a href="#isTristate"><b>isTristate</b></a> () const</li>
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<li class=fn>ToggleState <a href="#state"><b>state</b></a> () const</li>
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<li class=fn>void <a href="#setState"><b>setState</b></a> ( ToggleState s )</li>
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<li class=fn>virtual int <a href="#rtti"><b>rtti</b></a> () const</li>
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</ul>
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<h2>Protected Members</h2>
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<ul>
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<li class=fn>virtual void <a href="#activate"><b>activate</b></a> ()</li>
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<li class=fn>void <a href="#turnOffChild"><b>turnOffChild</b></a> ()</li>
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<li class=fn>virtual void <a href="#stateChange"><b>stateChange</b></a> ( bool )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQCheckListItem class provides checkable list view items.
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<p>
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<p> TQCheckListItems are used in <a href="tqlistview.html">TQListView</a>s to provide
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<a href="tqlistviewitem.html">TQListViewItem</a>s that are checkboxes, radio buttons or
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controllers.
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<p> Checkbox and controller check list items may be inserted at any
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level in a list view. Radio button check list items must be
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children of a controller check list item.
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<p> The item can be checked or unchecked with <a href="#setOn">setOn</a>(). Its type can be
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retrieved with <a href="#type">type</a>() and its text retrieved with <a href="#text">text</a>().
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<p> <center><img src="tqlistviewitems.png" alt="List View Items"></center>
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<p> <p>See also <a href="tqlistviewitem.html">TQListViewItem</a>, <a href="tqlistview.html">TQListView</a>, and <a href="advanced.html">Advanced Widgets</a>.
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<hr><h2>Member Type Documentation</h2>
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<h3 class=fn><a name="ToggleState-enum"></a>TQCheckListItem::ToggleState</h3>
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<p> This enum specifies a TQCheckListItem's toggle state.
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<ul>
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<li><tt>TQCheckListItem::Off</tt>
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<li><tt>TQCheckListItem::NoChange</tt>
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<li><tt>TQCheckListItem::On</tt>
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</ul>
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<h3 class=fn><a name="Type-enum"></a>TQCheckListItem::Type</h3>
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<p> This enum type specifies a TQCheckListItem's type:
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<ul>
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<li><tt>TQCheckListItem::RadioButton</tt>
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<li><tt>TQCheckListItem::CheckBox</tt>
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<li><tt>TQCheckListItem::Controller</tt> - <em>obsolete</em> (use <a href="#Type-enum">RadioButtonController</a> instead)
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<li><tt>TQCheckListItem::RadioButtonController</tt>
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<li><tt>TQCheckListItem::CheckBoxController</tt>
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</ul>
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQCheckListItem"></a>TQCheckListItem::TQCheckListItem ( <a href="tqchecklistitem.html">TQCheckListItem</a> * parent, const <a href="tqstring.html">TQString</a> & text, <a href="tqchecklistitem.html#Type-enum">Type</a> tt = RadioButtonController )
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</h3>
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Constructs a checkable item with parent <em>parent</em>, text <em>text</em>
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and of type <em>tt</em>. Note that a <a href="#Type-enum">RadioButton</a> must be the child of a
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<a href="#Type-enum">RadioButtonController</a>, otherwise it will not toggle.
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<h3 class=fn><a name="TQCheckListItem-2"></a>TQCheckListItem::TQCheckListItem ( <a href="tqchecklistitem.html">TQCheckListItem</a> * parent, <a href="tqlistviewitem.html">TQListViewItem</a> * after, const <a href="tqstring.html">TQString</a> & text, <a href="tqchecklistitem.html#Type-enum">Type</a> tt = RadioButtonController )
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</h3>
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Constructs a checkable item with parent <em>parent</em>, which is after
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<em>after</em> in the parent's list of children, and with text <em>text</em>
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and of type <em>tt</em>. Note that a <a href="#Type-enum">RadioButton</a> must be the child of
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a <a href="#Type-enum">RadioButtonController</a>, otherwise it will not toggle.
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<h3 class=fn><a name="TQCheckListItem-3"></a>TQCheckListItem::TQCheckListItem ( <a href="tqlistviewitem.html">TQListViewItem</a> * parent, const <a href="tqstring.html">TQString</a> & text, <a href="tqchecklistitem.html#Type-enum">Type</a> tt = RadioButtonController )
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</h3>
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Constructs a checkable item with parent <em>parent</em>, text <em>text</em>
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and of type <em>tt</em>. Note that this item must <em>not</em> be a <a href="#Type-enum">RadioButton</a>. Radio buttons must be children of a <a href="#Type-enum">RadioButtonController</a>.
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<h3 class=fn><a name="TQCheckListItem-4"></a>TQCheckListItem::TQCheckListItem ( <a href="tqlistviewitem.html">TQListViewItem</a> * parent, <a href="tqlistviewitem.html">TQListViewItem</a> * after, const <a href="tqstring.html">TQString</a> & text, <a href="tqchecklistitem.html#Type-enum">Type</a> tt = RadioButtonController )
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</h3>
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Constructs a checkable item with parent <em>parent</em>, which is after
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<em>after</em> in the parent's list of children, with text <em>text</em> and
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of type <em>tt</em>. Note that this item must <em>not</em> be a <a href="#Type-enum">RadioButton</a>. Radio buttons must be children of a <a href="#Type-enum">RadioButtonController</a>.
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<h3 class=fn><a name="TQCheckListItem-5"></a>TQCheckListItem::TQCheckListItem ( <a href="tqlistview.html">TQListView</a> * parent, const <a href="tqstring.html">TQString</a> & text, <a href="tqchecklistitem.html#Type-enum">Type</a> tt = RadioButtonController )
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</h3>
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Constructs a checkable item with parent <em>parent</em>, text <em>text</em>
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and of type <em>tt</em>. Note that <em>tt</em> must <em>not</em> be <a href="#Type-enum">RadioButton</a>.
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Radio buttons must be children of a <a href="#Type-enum">RadioButtonController</a>.
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<h3 class=fn><a name="TQCheckListItem-6"></a>TQCheckListItem::TQCheckListItem ( <a href="tqlistview.html">TQListView</a> * parent, <a href="tqlistviewitem.html">TQListViewItem</a> * after, const <a href="tqstring.html">TQString</a> & text, <a href="tqchecklistitem.html#Type-enum">Type</a> tt = RadioButtonController )
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</h3>
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Constructs a checkable item with parent <em>parent</em>, which is after
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<em>after</em> in the parent's list of children, with text <em>text</em> and
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of type <em>tt</em>. Note that <em>tt</em> must <em>not</em> be <a href="#Type-enum">RadioButton</a>.
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Radio buttons must be children of a <a href="#Type-enum">RadioButtonController</a>.
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<h3 class=fn><a name="TQCheckListItem-7"></a>TQCheckListItem::TQCheckListItem ( <a href="tqlistviewitem.html">TQListViewItem</a> * parent, const <a href="tqstring.html">TQString</a> & text, const <a href="tqpixmap.html">TQPixmap</a> & p )
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</h3>
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Constructs a <a href="#Type-enum">RadioButtonController</a> item with parent <em>parent</em>,
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text <em>text</em> and pixmap <em>p</em>.
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<h3 class=fn><a name="TQCheckListItem-8"></a>TQCheckListItem::TQCheckListItem ( <a href="tqlistview.html">TQListView</a> * parent, const <a href="tqstring.html">TQString</a> & text, const <a href="tqpixmap.html">TQPixmap</a> & p )
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</h3>
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Constructs a <a href="#Type-enum">RadioButtonController</a> item with parent <em>parent</em>,
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text <em>text</em> and pixmap <em>p</em>.
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<h3 class=fn><a name="~TQCheckListItem"></a>TQCheckListItem::~TQCheckListItem ()
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</h3>
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Destroys the item, and all its children to any depth, freeing up
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all allocated resources.
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<h3 class=fn>void <a name="activate"></a>TQCheckListItem::activate ()<tt> [virtual protected]</tt>
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</h3>
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Toggle check box or set radio button to on.
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<p>Reimplemented from <a href="tqlistviewitem.html#activate">TQListViewItem</a>.
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<h3 class=fn>bool <a name="isOn"></a>TQCheckListItem::isOn () const
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</h3>
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<p> Returns TRUE if the item is toggled on; otherwise returns FALSE.
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<h3 class=fn>bool <a name="isTristate"></a>TQCheckListItem::isTristate () const
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</h3>
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Returns TRUE if the item is tristate; otherwise returns FALSE.
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<p> <p>See also <a href="#setTristate">setTristate</a>().
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<h3 class=fn>void <a name="paintCell"></a>TQCheckListItem::paintCell ( <a href="tqpainter.html">TQPainter</a> * p, const <a href="tqcolorgroup.html">TQColorGroup</a> & cg, int column, int width, int align )<tt> [virtual]</tt>
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</h3>
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Paints the item using the painter <em>p</em> and the color group <em>cg</em>.
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The item is in column <em>column</em>, has width <em>width</em> and has
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alignment <em>align</em>. (See TQt::AlignmentFlags for valid alignments.)
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<p>Reimplemented from <a href="tqlistviewitem.html#paintCell">TQListViewItem</a>.
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<h3 class=fn>void <a name="paintFocus"></a>TQCheckListItem::paintFocus ( <a href="tqpainter.html">TQPainter</a> * p, const <a href="tqcolorgroup.html">TQColorGroup</a> & cg, const <a href="tqrect.html">TQRect</a> & r )<tt> [virtual]</tt>
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</h3>
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Draws the focus rectangle <em>r</em> using the color group <em>cg</em> on the
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painter <em>p</em>.
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<p>Reimplemented from <a href="tqlistviewitem.html#paintFocus">TQListViewItem</a>.
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<h3 class=fn>int <a name="rtti"></a>TQCheckListItem::rtti () const<tt> [virtual]</tt>
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</h3>
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<p> Returns 1.
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<p> Make your derived classes return their own values for <a href="#rtti">rtti</a>(), and
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you can distinguish between list view items. You should use values
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greater than 1000, to allow for extensions to this class.
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<p>Reimplemented from <a href="tqlistviewitem.html#rtti">TQListViewItem</a>.
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<h3 class=fn>void <a name="setOn"></a>TQCheckListItem::setOn ( bool b )<tt> [virtual]</tt>
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</h3>
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Sets the button on if <em>b</em> is TRUE, otherwise sets it off.
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Maintains radio button exclusivity.
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<h3 class=fn>void <a name="setState"></a>TQCheckListItem::setState ( <a href="tqchecklistitem.html#ToggleState-enum">ToggleState</a> s )
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</h3>
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Sets the toggle state of the checklistitem to <em>s</em>. <em>s</em> can be
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<a href="#ToggleState-enum">Off</a>, <a href="#ToggleState-enum">NoChange</a> or <a href="#ToggleState-enum">On</a>.
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<p> Tristate can only be enabled for <a href="#Type-enum">CheckBox</a> or <a href="#Type-enum">CheckBoxController</a>,
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therefore the <a href="#ToggleState-enum">NoChange</a> only applies to them.
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<p> Setting the state to <a href="#ToggleState-enum">On</a> or <a href="#ToggleState-enum">Off</a> on a <a href="#Type-enum">CheckBoxController</a>
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will recursivly set the states of its children to the same state.
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<p> Setting the state to <a href="#ToggleState-enum">NoChange</a> on a <a href="#Type-enum">CheckBoxController</a> will
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make it recursivly recall the previous stored state of its
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children. If there was no previous stored state the children are
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all set to <a href="#ToggleState-enum">On</a>.
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<h3 class=fn>void <a name="setTristate"></a>TQCheckListItem::setTristate ( bool b )
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</h3>
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Sets tristate to <em>b</em> if the <a href="#Type-enum">Type</a> is either a <a href="#Type-enum">CheckBoxController</a> or
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a <a href="#Type-enum">CheckBox</a>.
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<p> <tt>CheckBoxControllers</tt> are tristate by default.
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<p> <p>See also <a href="#state">state</a>() and <a href="#isTristate">isTristate</a>().
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<h3 class=fn><a href="tqchecklistitem.html#ToggleState-enum">ToggleState</a> <a name="state"></a>TQCheckListItem::state () const
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</h3>
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Returns the state of the item.
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<p> <p>See also <a href="#ToggleState-enum">TQCheckListItem::ToggleState</a>.
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<h3 class=fn>void <a name="stateChange"></a>TQCheckListItem::stateChange ( bool )<tt> [virtual protected]</tt>
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</h3>
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This virtual function is called when the item changes its state.
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<a href="#ToggleState-enum">NoChange</a> (if tristate is enabled and the type is either <a href="#Type-enum">CheckBox</a> or <a href="#Type-enum">CheckBoxController</a>) reports the same as <a href="#ToggleState-enum">Off</a>, so
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use <a href="#state">state</a>() to determine if the state is actually <a href="#ToggleState-enum">Off</a> or <a href="#ToggleState-enum">NoChange</a>.
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<h3 class=fn><a href="tqstring.html">TQString</a> <a name="text"></a>TQCheckListItem::text () const
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</h3>
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<p> Returns the item's text.
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<h3 class=fn>void <a name="turnOffChild"></a>TQCheckListItem::turnOffChild ()<tt> [protected]</tt>
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</h3>
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If this is a <a href="#Type-enum">RadioButtonController</a> that has <a href="#Type-enum">RadioButton</a>
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children, turn off the child that is on.
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<h3 class=fn><a href="tqchecklistitem.html#Type-enum">Type</a> <a name="type"></a>TQCheckListItem::type () const
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</h3>
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<p> Returns the type of this item.
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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