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603 lines
39 KiB
603 lines
39 KiB
13 years ago
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/widgets/qcombobox.cpp:59 -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>TQComboBox Class</title>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Functions</font></a>
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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>TQComboBox Class Reference</h1>
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<p>The TQComboBox widget is a combined button and popup list.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qcombobox-h.html">ntqcombobox.h</a>></tt>
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<p>Inherits <a href="ntqwidget.html">TQWidget</a>.
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<p><a href="qcombobox-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><a href="#TQComboBox"><b>TQComboBox</b></a> ( TQWidget * parent = 0, const char * name = 0 )</li>
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<li class=fn><a href="#TQComboBox-2"><b>TQComboBox</b></a> ( bool rw, TQWidget * parent = 0, const char * name = 0 )</li>
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<li class=fn><a href="#~TQComboBox"><b>~TQComboBox</b></a> ()</li>
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<li class=fn>int <a href="#count"><b>count</b></a> () const</li>
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<li class=fn>void <a href="#insertStringList"><b>insertStringList</b></a> ( const TQStringList & list, int index = -1 )</li>
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<li class=fn>void <a href="#insertStrList-2"><b>insertStrList</b></a> ( const TQStrList & list, int index = -1 )</li>
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<li class=fn>void <a href="#insertStrList-3"><b>insertStrList</b></a> ( const TQStrList * list, int index = -1 )</li>
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<li class=fn>void <a href="#insertStrList"><b>insertStrList</b></a> ( const char ** strings, int numStrings = -1, int index = -1 )</li>
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<li class=fn>void <a href="#insertItem"><b>insertItem</b></a> ( const TQString & t, int index = -1 )</li>
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<li class=fn>void <a href="#insertItem-2"><b>insertItem</b></a> ( const TQPixmap & pixmap, int index = -1 )</li>
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<li class=fn>void <a href="#insertItem-3"><b>insertItem</b></a> ( const TQPixmap & pixmap, const TQString & text, int index = -1 )</li>
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<li class=fn>void <a href="#removeItem"><b>removeItem</b></a> ( int index )</li>
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<li class=fn>int <a href="#currentItem"><b>currentItem</b></a> () const</li>
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<li class=fn>virtual void <a href="#setCurrentItem"><b>setCurrentItem</b></a> ( int index )</li>
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<li class=fn>TQString <a href="#currentText"><b>currentText</b></a> () const</li>
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<li class=fn>virtual void <a href="#setCurrentText"><b>setCurrentText</b></a> ( const TQString & )</li>
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<li class=fn>TQString <a href="#text"><b>text</b></a> ( int index ) const</li>
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<li class=fn>const TQPixmap * <a href="#pixmap"><b>pixmap</b></a> ( int index ) const</li>
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<li class=fn>void <a href="#changeItem"><b>changeItem</b></a> ( const TQString & t, int index )</li>
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<li class=fn>void <a href="#changeItem-2"><b>changeItem</b></a> ( const TQPixmap & im, int index )</li>
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<li class=fn>void <a href="#changeItem-3"><b>changeItem</b></a> ( const TQPixmap & im, const TQString & t, int index )</li>
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<li class=fn>bool autoResize () const <em>(obsolete)</em></li>
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<li class=fn>virtual void setAutoResize ( bool ) <em>(obsolete)</em></li>
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<li class=fn>virtual void <a href="#setPalette"><b>setPalette</b></a> ( const TQPalette & palette )</li>
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<li class=fn>virtual void <a href="#setFont"><b>setFont</b></a> ( const TQFont & font )</li>
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<li class=fn>virtual void <a href="#setSizeLimit"><b>setSizeLimit</b></a> ( int )</li>
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<li class=fn>int <a href="#sizeLimit"><b>sizeLimit</b></a> () const</li>
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<li class=fn>virtual void <a href="#setMaxCount"><b>setMaxCount</b></a> ( int )</li>
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<li class=fn>int <a href="#maxCount"><b>maxCount</b></a> () const</li>
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<li class=fn>enum <a href="#Policy-enum"><b>Policy</b></a> { NoInsertion, AtTop, AtCurrent, AtBottom, AfterCurrent, BeforeCurrent }</li>
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<li class=fn>virtual void <a href="#setInsertionPolicy"><b>setInsertionPolicy</b></a> ( Policy policy )</li>
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<li class=fn>Policy <a href="#insertionPolicy"><b>insertionPolicy</b></a> () const</li>
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<li class=fn>virtual void <a href="#setValidator"><b>setValidator</b></a> ( const TQValidator * v )</li>
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<li class=fn>const TQValidator * <a href="#validator"><b>validator</b></a> () const</li>
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<li class=fn>virtual void <a href="#setListBox"><b>setListBox</b></a> ( TQListBox * newListBox )</li>
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<li class=fn>TQListBox * <a href="#listBox"><b>listBox</b></a> () const</li>
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<li class=fn>virtual void <a href="#setLineEdit"><b>setLineEdit</b></a> ( TQLineEdit * edit )</li>
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<li class=fn>TQLineEdit * <a href="#lineEdit"><b>lineEdit</b></a> () const</li>
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<li class=fn>virtual void <a href="#setAutoCompletion"><b>setAutoCompletion</b></a> ( bool )</li>
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<li class=fn>bool <a href="#autoCompletion"><b>autoCompletion</b></a> () const</li>
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<li class=fn>void <a href="#setDuplicatesEnabled"><b>setDuplicatesEnabled</b></a> ( bool enable )</li>
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<li class=fn>bool <a href="#duplicatesEnabled"><b>duplicatesEnabled</b></a> () const</li>
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<li class=fn>bool <a href="#editable"><b>editable</b></a> () const</li>
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<li class=fn>void <a href="#setEditable"><b>setEditable</b></a> ( bool )</li>
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<li class=fn>virtual void <a href="#popup"><b>popup</b></a> ()</li>
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</ul>
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<h2>Public Slots</h2>
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<ul>
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<li class=fn>void <a href="#clear"><b>clear</b></a> ()</li>
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<li class=fn>void <a href="#clearValidator"><b>clearValidator</b></a> ()</li>
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<li class=fn>void <a href="#clearEdit"><b>clearEdit</b></a> ()</li>
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<li class=fn>virtual void <a href="#setEditText"><b>setEditText</b></a> ( const TQString & newText )</li>
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</ul>
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<h2>Signals</h2>
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<ul>
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<li class=fn>void <a href="#activated"><b>activated</b></a> ( int index )</li>
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<li class=fn>void <a href="#highlighted"><b>highlighted</b></a> ( int index )</li>
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<li class=fn>void <a href="#activated-2"><b>activated</b></a> ( const TQString & string )</li>
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<li class=fn>void <a href="#highlighted-2"><b>highlighted</b></a> ( const TQString & string )</li>
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<li class=fn>void <a href="#textChanged"><b>textChanged</b></a> ( const TQString & string )</li>
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</ul>
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<h2>Properties</h2>
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<ul>
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<li class=fn>bool <a href="#autoCompletion-prop"><b>autoCompletion</b></a> - whether auto-completion is enabled</li>
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<li class=fn>bool <a href="#autoMask-prop"><b>autoMask</b></a> - whether the combobox is automatically masked <em>(read only)</em></li>
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<li class=fn>bool autoResize - whether auto resize is enabled <em>(obsolete)</em></li>
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<li class=fn>int <a href="#count-prop"><b>count</b></a> - the number of items in the combobox <em>(read only)</em></li>
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<li class=fn>int <a href="#currentItem-prop"><b>currentItem</b></a> - the index of the current item in the combobox</li>
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<li class=fn>TQString <a href="#currentText-prop"><b>currentText</b></a> - the text of the combobox's current item</li>
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<li class=fn>bool <a href="#duplicatesEnabled-prop"><b>duplicatesEnabled</b></a> - whether duplicates are allowed</li>
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<li class=fn>bool <a href="#editable-prop"><b>editable</b></a> - whether the combobox is editable</li>
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<li class=fn>Policy <a href="#insertionPolicy-prop"><b>insertionPolicy</b></a> - the position of the items inserted by the user</li>
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<li class=fn>int <a href="#maxCount-prop"><b>maxCount</b></a> - the maximum number of items allowed in the combobox</li>
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<li class=fn>int <a href="#sizeLimit-prop"><b>sizeLimit</b></a> - the maximum on-screen size of the combobox</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQComboBox widget is a combined button and popup list.
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<p>
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<p> A combobox is a selection widget which displays the current item
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and can pop up a list of items. A combobox may be editable in
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which case the user can enter arbitrary strings.
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<p> Comboboxes provide a means of showing the user's current choice
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out of a list of options in a way that takes up the minimum amount
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of screen space.
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<p> TQComboBox supports three different display styles: Aqua/Motif 1.x,
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<a href="motif-extension.html#Motif">Motif</a> 2.0 and Windows. In Motif 1.x, a combobox was called
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XmOptionMenu. In Motif 2.0, OSF introduced an improved combobox
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and named that XmComboBox. TQComboBox provides both.
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<p> TQComboBox provides two different constructors. The simplest
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constructor creates an "old-style" combobox in Motif (or Aqua)
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style:
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<pre>
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TQComboBox *c = new TQComboBox( this, "read-only combobox" );
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</pre>
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<p> The other constructor creates a new-style combobox in Motif style,
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and can create both read-only and editable comboboxes:
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<pre>
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TQComboBox *c1 = new TQComboBox( FALSE, this, "read-only combobox" );
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TQComboBox *c2 = new TQComboBox( TRUE, this, "editable combobox" );
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</pre>
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<p> New-style comboboxes use a list box in both Motif and Windows
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styles, and both the content size and the on-screen size of the
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list box can be limited with <a href="#sizeLimit">sizeLimit</a>() and <a href="#setMaxCount">setMaxCount</a>()
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respectively. Old-style comboboxes use a popup in Aqua and Motif
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style, and that popup will happily grow larger than the desktop if
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you put enough data into it.
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<p> The two constructors create identical-looking comboboxes in
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Windows style.
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<p> Comboboxes can contain pixmaps as well as strings; the
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<a href="#insertItem">insertItem</a>() and <a href="#changeItem">changeItem</a>() functions are suitably overloaded.
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For editable comboboxes, the function <a href="#clearEdit">clearEdit</a>() is provided,
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to clear the displayed string without changing the combobox's
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contents.
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<p> A combobox emits two signals, <a href="#activated">activated</a>() and <a href="#highlighted">highlighted</a>(), when
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a new item has been activated (selected) or highlighted (made
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current). Both signals exist in two versions, one with a <a href="ntqstring.html">TQString</a> argument and one with an <tt>int</tt> argument. If the user
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highlights or activates a pixmap, only the <tt>int</tt> signals are
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emitted. Whenever the text of an editable combobox is changed the
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<a href="#textChanged">textChanged</a>() signal is emitted.
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<p> When the user enters a new string in an editable combobox, the
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widget may or may not insert it, and it can insert it in several
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locations. The default policy is is <a href="#Policy-enum">AtBottom</a> but you can change
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this using <a href="#setInsertionPolicy">setInsertionPolicy</a>().
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<p> It is possible to constrain the input to an editable combobox
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using <a href="ntqvalidator.html">TQValidator</a>; see <a href="#setValidator">setValidator</a>(). By default, any input is
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accepted.
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<p> If the combobox is not editable then it has a default
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<a href="ntqwidget.html#focusPolicy">focusPolicy</a>() of <a href="ntqwidget.html#FocusPolicy-enum">TabFocus</a>, i.e. it will not grab focus if
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clicked. This differs from both Windows and Motif. If the combobox
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is editable then it has a default focusPolicy() of <a href="ntqwidget.html#FocusPolicy-enum">StrongFocus</a>,
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i.e. it will grab focus if clicked.
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<p> A combobox can be populated using the insert functions,
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<a href="#insertStringList">insertStringList</a>() and <a href="#insertItem">insertItem</a>() for example. Items can be
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changed with <a href="#changeItem">changeItem</a>(). An item can be removed with
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<a href="#removeItem">removeItem</a>() and all items can be removed with <a href="#clear">clear</a>(). The text
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of the current item is returned by <a href="#currentText">currentText</a>(), and the text of
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a numbered item is returned with <a href="#text">text</a>(). The current item can be
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set with <a href="#setCurrentItem">setCurrentItem</a>() or <a href="#setCurrentText">setCurrentText</a>(). The number of items
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in the combobox is returned by <a href="#count">count</a>(); the maximum number of
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items can be set with <a href="#setMaxCount">setMaxCount</a>(). You can allow editing using
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<a href="#setEditable">setEditable</a>(). For editable comboboxes you can set auto-completion
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using <a href="#setAutoCompletion">setAutoCompletion</a>() and whether or not the user can add
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duplicates is set with <a href="#setDuplicatesEnabled">setDuplicatesEnabled</a>().
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<p> <img src="qcombo1-m.png">(Motif 1, read-only)<br clear=all>
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<img src="qcombo2-m.png">(Motif 2, editable)<br clear=all>
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<img src="qcombo3-m.png">(Motif 2, read-only)<br clear=all>
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<img src="qcombo1-w.png">(Windows style)
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<p> Depending on the style, TQComboBox will use a <a href="ntqlistbox.html">TQListBox</a> or a
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<a href="ntqpopupmenu.html">TQPopupMenu</a> to display the list of items. See <a href="#setListBox">setListBox</a>() for
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more information.
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<p> <p>See also <a href="ntqlineedit.html">TQLineEdit</a>, <a href="ntqlistbox.html">TQListBox</a>, <a href="ntqspinbox.html">TQSpinBox</a>, <a href="ntqradiobutton.html">TQRadioButton</a>, <a href="ntqbuttongroup.html">TQButtonGroup</a>, <a href="guibooks.html#fowler">GUI Design Handbook: Combo Box</a>, <a href="guibooks.html#fowler">GUI Design Handbook: Drop-Down List Box</a>, and <a href="basic.html">Basic Widgets</a>.
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13 years ago
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<hr><h2>Member Type Documentation</h2>
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<h3 class=fn><a name="Policy-enum"></a>TQComboBox::Policy</h3>
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<p> This enum specifies what the TQComboBox should do when a new string
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is entered by the user.
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<ul>
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<li><tt>TQComboBox::NoInsertion</tt> - the string will not be inserted into the
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combobox.
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<li><tt>TQComboBox::AtTop</tt> - insert the string as the first item in the combobox.
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<li><tt>TQComboBox::AtCurrent</tt> - replace the previously selected item with the
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string the user has entered.
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<li><tt>TQComboBox::AtBottom</tt> - insert the string as the last item in the
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combobox.
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<li><tt>TQComboBox::AfterCurrent</tt> - insert the string after the previously
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selected item.
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<li><tt>TQComboBox::BeforeCurrent</tt> - insert the string before the previously
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selected item.
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</ul><p> <a href="#activated">activated</a>() is always emitted when the string is entered.
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<p> If inserting the new string would cause the combobox to breach its
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content size limit, the item at the other end of the list is
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deleted. The definition of "other end" is
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implementation-dependent.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQComboBox"></a>TQComboBox::TQComboBox ( <a href="ntqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
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</h3>
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Constructs a combobox widget with parent <em>parent</em> called <em>name</em>.
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<p> This constructor creates a popup list if the program uses <a href="motif-extension.html#Motif">Motif</a>
|
||
|
|
(or Aqua) look and feel; this is compatible with Motif 1.x and
|
||
|
|
Aqua.
|
||
|
|
<p> Note: If you use this constructor to create your TQComboBox, then
|
||
|
|
the <a href="#pixmap">pixmap</a>() function will always return 0. To workaround this,
|
||
|
|
use the other constructor.
|
||
|
|
<p>
|
||
|
13 years ago
|
<h3 class=fn><a name="TQComboBox-2"></a>TQComboBox::TQComboBox ( bool rw, <a href="ntqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
Constructs a combobox with a maximum size and either <a href="motif-extension.html#Motif">Motif</a> 2.0 or
|
||
|
|
Windows look and feel.
|
||
|
|
<p> The input field can be edited if <em>rw</em> is TRUE, otherwise the user
|
||
|
|
may only choose one of the items in the combobox.
|
||
|
13 years ago
|
<p> The <em>parent</em> and <em>name</em> arguments are passed on to the <a href="ntqwidget.html">TQWidget</a>
|
||
|
13 years ago
|
constructor.
|
||
|
|
|
||
|
|
<h3 class=fn><a name="~TQComboBox"></a>TQComboBox::~TQComboBox ()
|
||
|
|
</h3>
|
||
|
|
Destroys the combobox.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="activated"></a>TQComboBox::activated ( int index )<tt> [signal]</tt>
|
||
|
|
</h3>
|
||
|
|
|
||
|
|
<p> This signal is emitted when a new item has been activated
|
||
|
|
(selected). The <em>index</em> is the position of the item in the
|
||
|
|
combobox.
|
||
|
|
<p> This signal is not emitted if the item is changed
|
||
|
|
programmatically, e.g. using <a href="#setCurrentItem">setCurrentItem</a>().
|
||
|
|
|
||
|
|
<p>Examples: <a href="fileiconview-example.html#x877">fileiconview/mainwindow.cpp</a>, <a href="helpviewer-example.html#x981">helpviewer/helpwindow.cpp</a>, <a href="lineedits-example.html#x170">lineedits/lineedits.cpp</a>, <a href="listboxcombo-example.html#x1398">listboxcombo/listboxcombo.cpp</a>, and <a href="qmag-example.html#x1772">qmag/qmag.cpp</a>.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="activated-2"></a>TQComboBox::activated ( const <a href="ntqstring.html">TQString</a> & string )<tt> [signal]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> This signal is emitted when a new item has been activated
|
||
|
|
(selected). <em>string</em> is the selected string.
|
||
|
|
<p> You can also use the <a href="#activated">activated</a>(int) signal, but be aware that its
|
||
|
|
argument is meaningful only for selected strings, not for user
|
||
|
|
entered strings.
|
||
|
|
|
||
|
|
<h3 class=fn>bool <a name="autoCompletion"></a>TQComboBox::autoCompletion () const
|
||
|
|
</h3><p>Returns TRUE if auto-completion is enabled; otherwise returns FALSE.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#autoCompletion-prop">"autoCompletion"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>bool <a name="autoResize"></a>TQComboBox::autoResize () const
|
||
|
|
</h3><p>Returns TRUE if auto resize is enabled; otherwise returns FALSE.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#autoResize-prop">"autoResize"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="changeItem"></a>TQComboBox::changeItem ( const <a href="ntqstring.html">TQString</a> & t, int index )
|
||
|
13 years ago
|
</h3>
|
||
|
|
Replaces the item at position <em>index</em> with the text <em>t</em>.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="changeItem-2"></a>TQComboBox::changeItem ( const <a href="ntqpixmap.html">TQPixmap</a> & im, int index )
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> Replaces the item at position <em>index</em> with the pixmap <em>im</em>,
|
||
|
|
unless the combobox is editable.
|
||
|
|
<p> <p>See also <a href="#insertItem">insertItem</a>().
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="changeItem-3"></a>TQComboBox::changeItem ( const <a href="ntqpixmap.html">TQPixmap</a> & im, const <a href="ntqstring.html">TQString</a> & t, int index )
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> Replaces the item at position <em>index</em> with the pixmap <em>im</em> and
|
||
|
|
the text <em>t</em>.
|
||
|
|
<p> <p>See also <a href="#insertItem">insertItem</a>().
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="clear"></a>TQComboBox::clear ()<tt> [slot]</tt>
|
||
|
|
</h3>
|
||
|
|
Removes all combobox items.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="clearEdit"></a>TQComboBox::clearEdit ()<tt> [slot]</tt>
|
||
|
|
</h3>
|
||
|
|
Clears the line edit without changing the combobox's contents.
|
||
|
|
Does nothing if the combobox isn't editable.
|
||
|
|
<p> This is particularly useful when using a combobox as a line edit
|
||
|
|
with history. For example you can connect the combobox's
|
||
|
|
<a href="#activated">activated</a>() signal to <a href="#clearEdit">clearEdit</a>() in order to present the user
|
||
|
|
with a new, empty line as soon as Enter is pressed.
|
||
|
|
<p> <p>See also <a href="#setEditText">setEditText</a>().
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="clearValidator"></a>TQComboBox::clearValidator ()<tt> [slot]</tt>
|
||
|
|
</h3>
|
||
|
|
This slot is equivalent to <a href="#setValidator">setValidator</a>( 0 ).
|
||
|
|
|
||
|
|
<h3 class=fn>int <a name="count"></a>TQComboBox::count () const
|
||
|
|
</h3><p>Returns the number of items in the combobox.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#count-prop">"count"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>int <a name="currentItem"></a>TQComboBox::currentItem () const
|
||
|
|
</h3><p>Returns the index of the current item in the combobox.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#currentItem-prop">"currentItem"</a> property for details.
|
||
|
|
<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="currentText"></a>TQComboBox::currentText () const
|
||
|
13 years ago
|
</h3><p>Returns the text of the combobox's current item.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#currentText-prop">"currentText"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>bool <a name="duplicatesEnabled"></a>TQComboBox::duplicatesEnabled () const
|
||
|
|
</h3><p>Returns TRUE if duplicates are allowed; otherwise returns FALSE.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#duplicatesEnabled-prop">"duplicatesEnabled"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>bool <a name="editable"></a>TQComboBox::editable () const
|
||
|
|
</h3><p>Returns TRUE if the combobox is editable; otherwise returns FALSE.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#editable-prop">"editable"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="highlighted"></a>TQComboBox::highlighted ( int index )<tt> [signal]</tt>
|
||
|
|
</h3>
|
||
|
|
|
||
|
|
<p> This signal is emitted when a new item has been set to be the
|
||
|
|
current item. The <em>index</em> is the position of the item in the
|
||
|
|
combobox.
|
||
|
|
<p> This signal is not emitted if the item is changed
|
||
|
|
programmatically, e.g. using <a href="#setCurrentItem">setCurrentItem</a>().
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="highlighted-2"></a>TQComboBox::highlighted ( const <a href="ntqstring.html">TQString</a> & string )<tt> [signal]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> This signal is emitted when a new item has been set to be the
|
||
|
|
current item. <em>string</em> is the item's text.
|
||
|
|
<p> You can also use the <a href="#highlighted">highlighted</a>(int) signal.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="insertItem"></a>TQComboBox::insertItem ( const <a href="ntqstring.html">TQString</a> & t, int index = -1 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
Inserts a text item with text <em>t</em>, at position <em>index</em>. The item
|
||
|
|
will be appended if <em>index</em> is negative.
|
||
|
|
|
||
|
|
<p>Examples: <a href="tutorial2-09.html#x2633">chart/optionsform.cpp</a>, <a href="fileiconview-example.html#x879">fileiconview/mainwindow.cpp</a>, <a href="helpviewer-example.html#x983">helpviewer/helpwindow.cpp</a>, <a href="lineedits-example.html#x171">lineedits/lineedits.cpp</a>, <a href="listboxcombo-example.html#x1399">listboxcombo/listboxcombo.cpp</a>, <a href="regexptester-example.html#x2479">regexptester/regexptester.cpp</a>, and <a href="tictac-example.html#x23">tictac/tictac.cpp</a>.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="insertItem-2"></a>TQComboBox::insertItem ( const <a href="ntqpixmap.html">TQPixmap</a> & pixmap, int index = -1 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> Inserts a <em>pixmap</em> item at position <em>index</em>. The item will be
|
||
|
|
appended if <em>index</em> is negative.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="insertItem-3"></a>TQComboBox::insertItem ( const <a href="ntqpixmap.html">TQPixmap</a> & pixmap, const <a href="ntqstring.html">TQString</a> & text, int index = -1 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> Inserts a <em>pixmap</em> item with additional text <em>text</em> at position
|
||
|
|
<em>index</em>. The item will be appended if <em>index</em> is negative.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="insertStrList"></a>TQComboBox::insertStrList ( const char ** strings, int numStrings = -1, int index = -1 )
|
||
|
|
</h3>
|
||
|
|
Inserts the array of char * <em>strings</em> at position <em>index</em> in the
|
||
|
|
combobox.
|
||
|
|
<p> The <em>numStrings</em> argument is the number of strings. If <em>numStrings</em> is -1 (default), the <em>strings</em> array must be
|
||
|
|
terminated with 0.
|
||
|
|
<p> Example:
|
||
|
|
<pre>
|
||
|
|
static const char* items[] = { "red", "green", "blue", 0 };
|
||
|
|
combo->insertStrList( items );
|
||
|
|
</pre>
|
||
|
|
|
||
|
|
<p> <p>See also <a href="#insertStringList">insertStringList</a>().
|
||
|
|
|
||
|
|
<p>Example: <a href="qmag-example.html#x1773">qmag/qmag.cpp</a>.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="insertStrList-2"></a>TQComboBox::insertStrList ( const <a href="ntqstrlist.html">TQStrList</a> & list, int index = -1 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> Inserts the <em>list</em> of strings at position <em>index</em> in the
|
||
|
|
combobox.
|
||
|
|
<p> This is only for compatibility since it does not support Unicode
|
||
|
|
strings. See <a href="#insertStringList">insertStringList</a>().
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="insertStrList-3"></a>TQComboBox::insertStrList ( const <a href="ntqstrlist.html">TQStrList</a> * list, int index = -1 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
|
||
|
|
<p> Inserts the <em>list</em> of strings at position <em>index</em> in the
|
||
|
|
combobox.
|
||
|
|
<p> This is only for compatibility since it does not support Unicode
|
||
|
|
strings. See <a href="#insertStringList">insertStringList</a>().
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="insertStringList"></a>TQComboBox::insertStringList ( const <a href="ntqstringlist.html">TQStringList</a> & list, int index = -1 )
|
||
|
13 years ago
|
</h3>
|
||
|
|
Inserts the <em>list</em> of strings at position <em>index</em> in the
|
||
|
|
combobox.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn><a href="ntqcombobox.html#Policy-enum">Policy</a> <a name="insertionPolicy"></a>TQComboBox::insertionPolicy () const
|
||
|
13 years ago
|
</h3><p>Returns the position of the items inserted by the user.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#insertionPolicy-prop">"insertionPolicy"</a> property for details.
|
||
|
|
<h3 class=fn><a href="ntqlineedit.html">TQLineEdit</a> * <a name="lineEdit"></a>TQComboBox::lineEdit () const
|
||
|
13 years ago
|
</h3>
|
||
|
|
Returns the line edit, or 0 if there is no line edit.
|
||
|
|
<p> Only editable listboxes have a line editor.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn><a href="ntqlistbox.html">TQListBox</a> * <a name="listBox"></a>TQComboBox::listBox () const
|
||
|
13 years ago
|
</h3>
|
||
|
|
Returns the current list box, or 0 if there is no list box.
|
||
|
13 years ago
|
(TQComboBox can use <a href="ntqpopupmenu.html">TQPopupMenu</a> instead of <a href="ntqlistbox.html">TQListBox</a>.) Provided to
|
||
|
13 years ago
|
match <a href="#setListBox">setListBox</a>().
|
||
|
|
<p> <p>See also <a href="#setListBox">setListBox</a>().
|
||
|
|
|
||
|
|
<p>Example: <a href="listboxcombo-example.html#x1400">listboxcombo/listboxcombo.cpp</a>.
|
||
|
|
<h3 class=fn>int <a name="maxCount"></a>TQComboBox::maxCount () const
|
||
|
|
</h3><p>Returns the maximum number of items allowed in the combobox.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#maxCount-prop">"maxCount"</a> property for details.
|
||
|
|
<h3 class=fn>const <a href="ntqpixmap.html">TQPixmap</a> * <a name="pixmap"></a>TQComboBox::pixmap ( int index ) const
|
||
|
13 years ago
|
</h3>
|
||
|
|
Returns the pixmap item at position <em>index</em>, or 0 if the item is
|
||
|
|
not a pixmap.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="popup"></a>TQComboBox::popup ()<tt> [virtual]</tt>
|
||
|
|
</h3>
|
||
|
|
Pops up the combobox popup list.
|
||
|
|
<p> If the list is empty, no items appear.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="removeItem"></a>TQComboBox::removeItem ( int index )
|
||
|
|
</h3>
|
||
|
|
Removes the item at position <em>index</em>.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="setAutoCompletion"></a>TQComboBox::setAutoCompletion ( bool )<tt> [virtual]</tt>
|
||
|
|
</h3><p>Sets whether auto-completion is enabled.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#autoCompletion-prop">"autoCompletion"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="setAutoResize"></a>TQComboBox::setAutoResize ( bool )<tt> [virtual]</tt>
|
||
|
|
</h3><p>Sets whether auto resize is enabled.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#autoResize-prop">"autoResize"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="setCurrentItem"></a>TQComboBox::setCurrentItem ( int index )<tt> [virtual]</tt>
|
||
|
|
</h3><p>Sets the index of the current item in the combobox to <em>index</em>.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#currentItem-prop">"currentItem"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="setCurrentText"></a>TQComboBox::setCurrentText ( const <a href="ntqstring.html">TQString</a> & )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3><p>Sets the text of the combobox's current item.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#currentText-prop">"currentText"</a> property for details.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="setDuplicatesEnabled"></a>TQComboBox::setDuplicatesEnabled ( bool enable )
|
||
|
|
</h3><p>Sets whether duplicates are allowed to <em>enable</em>.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#duplicatesEnabled-prop">"duplicatesEnabled"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="setEditText"></a>TQComboBox::setEditText ( const <a href="ntqstring.html">TQString</a> & newText )<tt> [virtual slot]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
Sets the text in the line edit to <em>newText</em> without changing the
|
||
|
|
combobox's contents. Does nothing if the combobox isn't editable.
|
||
|
|
<p> This is useful e.g. for providing a good starting point for the
|
||
|
|
user's editing and entering the change in the combobox only when
|
||
|
|
the user presses Enter.
|
||
|
|
<p> <p>See also <a href="#clearEdit">clearEdit</a>() and <a href="#insertItem">insertItem</a>().
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="setEditable"></a>TQComboBox::setEditable ( bool )
|
||
|
|
</h3><p>Sets whether the combobox is editable.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#editable-prop">"editable"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="setFont"></a>TQComboBox::setFont ( const <a href="ntqfont.html">TQFont</a> & font )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
Sets the font for both the combobox button and the combobox popup
|
||
|
|
list to <em>font</em>.
|
||
|
|
|
||
|
13 years ago
|
<p>Reimplemented from <a href="ntqwidget.html#setFont">TQWidget</a>.
|
||
|
|
<h3 class=fn>void <a name="setInsertionPolicy"></a>TQComboBox::setInsertionPolicy ( <a href="ntqcombobox.html#Policy-enum">Policy</a> policy )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3><p>Sets the position of the items inserted by the user to <em>policy</em>.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#insertionPolicy-prop">"insertionPolicy"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="setLineEdit"></a>TQComboBox::setLineEdit ( <a href="ntqlineedit.html">TQLineEdit</a> * edit )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
Sets the line edit to use <em>edit</em> instead of the current line edit.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>void <a name="setListBox"></a>TQComboBox::setListBox ( <a href="ntqlistbox.html">TQListBox</a> * newListBox )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
Sets the combobox to use <em>newListBox</em> instead of the current list
|
||
|
|
box or popup. As a side effect, it clears the combobox of its
|
||
|
|
current contents.
|
||
|
|
<p> <b>Warning:</b> TQComboBox assumes that newListBox->text(n) returns
|
||
|
|
non-null for 0 <= n < newListbox->count(). This assumption is
|
||
|
|
necessary because of the line edit in TQComboBox.
|
||
|
|
|
||
|
|
<h3 class=fn>void <a name="setMaxCount"></a>TQComboBox::setMaxCount ( int )<tt> [virtual]</tt>
|
||
|
|
</h3><p>Sets the maximum number of items allowed in the combobox.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#maxCount-prop">"maxCount"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="setPalette"></a>TQComboBox::setPalette ( const <a href="ntqpalette.html">TQPalette</a> & palette )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
Sets the palette for both the combobox button and the combobox
|
||
|
|
popup list to <em>palette</em>.
|
||
|
|
|
||
|
13 years ago
|
<p>Reimplemented from <a href="ntqwidget.html#setPalette">TQWidget</a>.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="setSizeLimit"></a>TQComboBox::setSizeLimit ( int )<tt> [virtual]</tt>
|
||
|
|
</h3><p>Sets the maximum on-screen size of the combobox.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#sizeLimit-prop">"sizeLimit"</a> property for details.
|
||
|
|
<h3 class=fn>void <a name="setValidator"></a>TQComboBox::setValidator ( const <a href="ntqvalidator.html">TQValidator</a> * v )<tt> [virtual]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
Applies the validator <em>v</em> to the combobox so that only text which
|
||
|
|
is valid according to <em>v</em> is accepted.
|
||
|
|
<p> This function does nothing if the combobox is not editable.
|
||
|
13 years ago
|
<p> <p>See also <a href="#validator">validator</a>(), <a href="#clearValidator">clearValidator</a>(), and <a href="ntqvalidator.html">TQValidator</a>.
|
||
|
13 years ago
|
|
||
|
|
<h3 class=fn>int <a name="sizeLimit"></a>TQComboBox::sizeLimit () const
|
||
|
|
</h3><p>Returns the maximum on-screen size of the combobox.
|
||
|
13 years ago
|
See the <a href="ntqcombobox.html#sizeLimit-prop">"sizeLimit"</a> property for details.
|
||
|
|
<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="text"></a>TQComboBox::text ( int index ) const
|
||
|
13 years ago
|
</h3>
|
||
|
13 years ago
|
Returns the text item at position <em>index</em>, or <a href="ntqstring.html#TQString-null">TQString::null</a> if
|
||
|
13 years ago
|
the item is not a string.
|
||
|
|
<p> <p>See also <a href="#currentText-prop">currentText</a>.
|
||
|
|
|
||
|
|
<p>Examples: <a href="fileiconview-example.html#x882">fileiconview/mainwindow.cpp</a> and <a href="helpviewer-example.html#x985">helpviewer/helpwindow.cpp</a>.
|
||
|
13 years ago
|
<h3 class=fn>void <a name="textChanged"></a>TQComboBox::textChanged ( const <a href="ntqstring.html">TQString</a> & string )<tt> [signal]</tt>
|
||
|
13 years ago
|
</h3>
|
||
|
|
|
||
|
|
<p> This signal is used for editable comboboxes. It is emitted
|
||
|
|
whenever the contents of the text entry field changes. <em>string</em>
|
||
|
|
contains the new text.
|
||
|
|
|
||
|
13 years ago
|
<h3 class=fn>const <a href="ntqvalidator.html">TQValidator</a> * <a name="validator"></a>TQComboBox::validator () const
|
||
|
13 years ago
|
</h3>
|
||
|
|
Returns the validator which constrains editing for this combobox
|
||
|
|
if there is one; otherwise returns 0.
|
||
|
13 years ago
|
<p> <p>See also <a href="#setValidator">setValidator</a>(), <a href="#clearValidator">clearValidator</a>(), and <a href="ntqvalidator.html">TQValidator</a>.
|
||
|
13 years ago
|
|
||
|
|
<hr><h2>Property Documentation</h2>
|
||
|
|
<h3 class=fn>bool <a name="autoCompletion-prop"></a>autoCompletion</h3>
|
||
|
|
<p>This property holds whether auto-completion is enabled.
|
||
|
|
<p>This property can only be set for editable comboboxes, for
|
||
|
|
non-editable comboboxes it has no effect. It is FALSE by default.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setAutoCompletion">setAutoCompletion</a>() and get this property's value with <a href="#autoCompletion">autoCompletion</a>().
|
||
|
|
<h3 class=fn>bool <a name="autoMask-prop"></a>autoMask</h3>
|
||
|
|
<p>This property holds whether the combobox is automatically masked.
|
||
|
13 years ago
|
<p><p><p>See also <a href="ntqwidget.html#autoMask-prop">TQWidget::autoMask</a>.
|
||
|
13 years ago
|
|
||
|
|
<h3 class=fn>bool <a name="autoResize-prop"></a>autoResize</h3> <p>This property holds whether auto resize is enabled.
|
||
|
|
<p><b>This property is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
|
||
|
|
<p> If this property is set to TRUE then the combobox will resize itself
|
||
|
|
whenever its contents change. The default is FALSE.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setAutoResize">setAutoResize</a>() and get this property's value with <a href="#autoResize">autoResize</a>().
|
||
|
|
<h3 class=fn>int <a name="count-prop"></a>count</h3>
|
||
|
|
<p>This property holds the number of items in the combobox.
|
||
|
|
<p>
|
||
|
|
<p>Get this property's value with <a href="#count">count</a>().
|
||
|
|
<h3 class=fn>int <a name="currentItem-prop"></a>currentItem</h3>
|
||
|
|
<p>This property holds the index of the current item in the combobox.
|
||
|
|
<p>Note that the <a href="#activated">activated</a>() and <a href="#highlighted">highlighted</a>() signals are only
|
||
|
|
emitted when the user changes the current item, not when it is
|
||
|
|
changed programmatically.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setCurrentItem">setCurrentItem</a>() and get this property's value with <a href="#currentItem">currentItem</a>().
|
||
|
13 years ago
|
<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="currentText-prop"></a>currentText</h3>
|
||
|
13 years ago
|
<p>This property holds the text of the combobox's current item.
|
||
|
|
<p>
|
||
|
|
<p>Set this property's value with <a href="#setCurrentText">setCurrentText</a>() and get this property's value with <a href="#currentText">currentText</a>().
|
||
|
|
<h3 class=fn>bool <a name="duplicatesEnabled-prop"></a>duplicatesEnabled</h3>
|
||
|
|
<p>This property holds whether duplicates are allowed.
|
||
|
|
<p>If the combobox is editable and the user enters some text in the
|
||
|
|
combobox's lineedit and presses Enter (and the <a href="#insertionPolicy">insertionPolicy</a>()
|
||
|
|
is not <a href="#Policy-enum">NoInsertion</a>), then what happens is this:
|
||
|
|
<ul>
|
||
|
|
<li> If the text is not already in the list, the text is inserted.
|
||
|
|
<li> If the text is in the list and this property is TRUE (the
|
||
|
|
default), the text is inserted.
|
||
|
|
<li> If the text is in the list and this property is FALSE, the text
|
||
|
|
is <em>not</em> inserted; instead the item which has matching text becomes
|
||
|
|
the current item.
|
||
|
|
</ul>
|
||
|
|
<p> This property only affects user-interaction. You can use
|
||
|
|
<a href="#insertItem">insertItem</a>() to insert duplicates if you wish regardless of this
|
||
|
|
setting.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setDuplicatesEnabled">setDuplicatesEnabled</a>() and get this property's value with <a href="#duplicatesEnabled">duplicatesEnabled</a>().
|
||
|
|
<h3 class=fn>bool <a name="editable-prop"></a>editable</h3>
|
||
|
|
<p>This property holds whether the combobox is editable.
|
||
|
|
<p>This property's default is FALSE. Note that the combobox will be
|
||
|
|
cleared if this property is set to TRUE for a 1.x <a href="motif-extension.html#Motif">Motif</a> style
|
||
|
|
combobox. To avoid this, use <a href="#setEditable">setEditable</a>() before inserting any
|
||
|
|
items. Also note that the 1.x version of Motif didn't have any
|
||
|
|
editable comboboxes, so the combobox will change it's appearance
|
||
|
|
to a 2.0 style Motif combobox is it is set to be editable.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setEditable">setEditable</a>() and get this property's value with <a href="#editable">editable</a>().
|
||
|
13 years ago
|
<h3 class=fn><a href="ntqcombobox.html#Policy-enum">Policy</a> <a name="insertionPolicy-prop"></a>insertionPolicy</h3>
|
||
|
13 years ago
|
<p>This property holds the position of the items inserted by the user.
|
||
|
|
<p>The default insertion policy is <a href="#Policy-enum">AtBottom</a>. See <a href="#Policy-enum">Policy</a>.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setInsertionPolicy">setInsertionPolicy</a>() and get this property's value with <a href="#insertionPolicy">insertionPolicy</a>().
|
||
|
|
<h3 class=fn>int <a name="maxCount-prop"></a>maxCount</h3>
|
||
|
|
<p>This property holds the maximum number of items allowed in the combobox.
|
||
|
|
<p>
|
||
|
|
<p>Set this property's value with <a href="#setMaxCount">setMaxCount</a>() and get this property's value with <a href="#maxCount">maxCount</a>().
|
||
|
|
<h3 class=fn>int <a name="sizeLimit-prop"></a>sizeLimit</h3>
|
||
|
|
<p>This property holds the maximum on-screen size of the combobox.
|
||
|
|
<p>This property is ignored for both <a href="motif-extension.html#Motif">Motif</a> 1.x style and non-editable
|
||
|
|
comboboxes in Mac style. The default limit is ten
|
||
|
|
lines. If the number of items in the combobox is or grows larger
|
||
|
|
than lines, a scrollbar is added.
|
||
|
|
|
||
|
|
<p>Set this property's value with <a href="#setSizeLimit">setSizeLimit</a>() and get this property's value with <a href="#sizeLimit">sizeLimit</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>
|