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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head>
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<title>Qt Toolkit - QLabel Class</title><style type="text/css"><!--
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</head><body bgcolor="#ffffff">
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<h1 align=center>QLabel Class Reference</h1><br clear="all">
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<p>
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The QLabel widget provides a static information display
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<a href="#details">More...</a>
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<p>
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<code>#include <<a href="qlabel-h.html">qlabel.h</a>></code>
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<p>
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Inherits <a href="qframe.html">QFrame</a>.
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<p><a href="qlabel-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><div class="fn"><a href="#39107d"><b>QLabel</b></a><EFBFBD>(<28>QWidget<65>*<2A>parent, const<73>char<61>*<2A>name=0, WFlags<67>f=0<>)<29></div>
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<li><div class="fn"><a href="#2bafbb"><b>QLabel</b></a><EFBFBD>(<28>const<73>QString<6E>&<EFBFBD>text, QWidget<65>*<2A>parent, const<73>char<61>*<2A>name=0, WFlags<67>f=0<>)<29></div>
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<li><div class="fn"><a href="#5514c7"><b>QLabel</b></a><EFBFBD>(<28>QWidget<65>*<2A>buddy, const<73>QString<6E>&, QWidget<65>*<2A>parent, const<73>char<61>*<2A>name=0, WFlags<67>f=0<>)<29></div>
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<li><div class="fn"><a href="#9958af"><b>~QLabel</b></a><EFBFBD>()<29></div>
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<li><div class="fn">QString<EFBFBD><a href="#72cf09"><b>text</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">QPixmap*<2A><a href="#101ecb"><b>pixmap</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">QMovie*<2A><a href="#7dcdfe"><b>movie</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">TextFormat<EFBFBD><a href="#0b92ed"><b>textFormat</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">void<EFBFBD><a href="#5de3f9"><b>setTextFormat</b></a><EFBFBD>(<28>TextFormat<61>)<29></div>
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<li><div class="fn">int<EFBFBD><a href="#2fcaa3"><b>alignment</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#1f406e"><b>setAlignment</b></a><EFBFBD>(<28>int<6E>)<29></div>
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<li><div class="fn">int<EFBFBD><a href="#e3c907"><b>indent</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">void<EFBFBD><a href="#ed9b8b"><b>setIndent</b></a><EFBFBD>(<28>int<6E>)<29></div>
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<li><div class="fn">bool<EFBFBD>autoResize<EFBFBD>()<29>const<73><em>(obsolete)</em></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD>setAutoResize<EFBFBD>(<28>bool<6F>)<29><em>(obsolete)</em></div>
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<li><div class="fn">bool<EFBFBD><a href="#7e1f73"><b>hasScaledContents</b></a><EFBFBD>()<29>const</div>
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<li><div class="fn">void<EFBFBD><a href="#e9e3cf"><b>setScaledContents</b></a><EFBFBD>(<28>bool<6F>)<29></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#191701"><b>setBuddy</b></a><EFBFBD>(<28>QWidget<65>*<2A>)<29></div>
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<li><div class="fn">QWidget*<2A><a href="#123954"><b>buddy</b></a><EFBFBD>()<29>const</div>
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</ul>
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<h2>Public Slots</h2>
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<ul>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#dffb43"><b>setText</b></a><EFBFBD>(<28>const<73>QString<6E>&<EFBFBD>)<29></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#f3f301"><b>setPixmap</b></a><EFBFBD>(<28>const<73>QPixmap<61>&<EFBFBD>)<29></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#60de9f"><b>setMovie</b></a><EFBFBD>(<28>const<73>QMovie<69>&<EFBFBD>)<29></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#301e3c"><b>setNum</b></a><EFBFBD>(<28>int<6E>)<29></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#1a8f6a"><b>setNum</b></a><EFBFBD>(<28>double<6C>)<29></div>
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<li><div class="fn">void<EFBFBD><a href="#be73f3"><b>clear</b></a><EFBFBD>()<29></div>
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</ul>
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<h2>Protected Members</h2>
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<ul>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#fac264"><b>drawContents</b></a><EFBFBD>(<28>QPainter<65>*<2A>)<29></div>
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<li><div class="fn">virtual<EFBFBD>void<EFBFBD><a href="#479dd2"><b>drawContentsMask</b></a><EFBFBD>(<28>QPainter<65>*<2A>)<29></div>
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</ul>
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<h2>Properties</h2>
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<table border=1 cellpadding=3 cellspacing=0>
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<tr><th>Type<th>Name<th>READ<th>WRITE<th>Options
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<tr><td>QString<td>text<td>text<td>setText<td>
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<tr><td>TextFormat<td>textFormat<td>textFormat<td>setTextFormat<td>
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<tr><td>QPixmap<td>pixmap<td>pixmap<td>setPixmap<td>
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<tr><td>bool<td>scaledContents<td>hasScaledContents<td>setScaledContents<td>
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<tr><td>Alignment<td>alignment<td>alignment<td>setAlignment<td>
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<tr><td>int<td>indent<td>indent<td>setIndent<td>
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</table>
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<p>
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<hr><h2><a name="details"></a>Detailed Description</h2>
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The QLabel widget provides a static information display
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<p>
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QLabel is used for displaying information in the form of text or
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image to the user. No user interaction functionality is
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provided. The visual appearance of the label can be configured in
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various ways, and it can be used for specifying a focus accelerator
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key for another widget.
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<p>A QLabel can contain any of the following content types:
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<ul>
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<li> A plain text: set by passing a <a href="qstring.html">QString</a> to <a href="#dffb43">setText</a>().
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<li> A rich text: set by passing a QString that contains a rich text to setText().
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<li> A pixmap: set by passing a <a href="qpixmap.html">QPixmap</a> to <a href="#f3f301">setPixmap</a>().
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<li> A movie: set by passing a <a href="qmovie.html">QMovie</a> to <a href="#60de9f">setMovie</a>().
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<li> A number: set by passing an <em>int</em> or a <em>double</em> to <a href="#1a8f6a">setNum</a>(), which converts the number to plain text.
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<li> Nothing: The same as an empty plain text. This is the default. Set by <a href="#be73f3">clear</a>().
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</ul>
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<p>When the content is changed using any of these functions, any
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previous content is cleared.
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<p>The look of a QLabel can be tuned in several ways. All the settings
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of <a href="qframe.html">QFrame</a> are available for specifying a widget frame. The
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positioning of the content within the QLabel widget area can be
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tuned with <a href="#1f406e">setAlignment</a>() and <a href="#ed9b8b">setIndent</a>(). For example, this code
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sets up a sunken panel with a two-line text in the bottom right
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corner (both lines being flush with the right side of the label):
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<p><pre> <a href="qlabel.html">QLabel</a> *label = new <a href="qlabel.html">QLabel</a>;
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label-><a href="qframe.html#c0d758">setFrameStyle</a>( QFrame::Panel | QFrame::Sunken );
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label-><a href="#dffb43">setText</a>( "first line\nsecond line" );
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label-><a href="#1f406e">setAlignment</a>( AlignBottom | AlignRight );
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</pre>
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<p>A QLabel is often used as a label for another, interactive
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widget. For this use, QLabel provides a handy mechanism for adding
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an accelerator key (see <a href="qaccel.html">QAccel</a>) that will set the keyboard focus to
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the other widget (called the QLabel's "buddy"). Example:
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<p><pre> <a href="qlineedit.html">QLineEdit</a>* phoneEdit = new <a href="qlineedit.html">QLineEdit</a>( this, "phoneEdit" );
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<a href="qlabel.html">QLabel</a>* phoneLabel = new <a href="qlabel.html">QLabel</a>( phoneEdit, "&Phone:", this, "phoneLabel" );
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</pre>
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<p>In this example, keyboard focus is transferred to the label's buddy
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(the <a href="qlineedit.html">QLineEdit</a>) when the user presses <dfn>Alt-P.</dfn> You can also
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use the <a href="#191701">setBuddy</a>() function to accomplish the same.
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<p>
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<p>See also <a href="qlineedit.html">QLineEdit</a>, <a href="qtextview.html">QTextView</a>, <a href="qpixmap.html">QPixmap</a>, <a href="qmovie.html">QMovie</a> and <a href="guibooks.html#fowler">GUI Design Handbook: Label</a>
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<p>Examples:
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<a href="cursor-cursor-cpp.html#QLabel">cursor/cursor.cpp</a>
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<a href="layout-layout-cpp.html#QLabel">layout/layout.cpp</a>
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<a href="popup-popup-cpp.html#QLabel">popup/popup.cpp</a>
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<a href="menu-menu-cpp.html#QLabel">menu/menu.cpp</a>
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<a href="progress-progress-cpp.html#QLabel">progress/progress.cpp</a>
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<a href="qmag-qmag-cpp.html#QLabel">qmag/qmag.cpp</a>
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<a href="movies-main-cpp.html#QLabel">movies/main.cpp</a>
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<a href="customlayout-main-cpp.html#QLabel">customlayout/main.cpp</a>
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<hr><h2>Member Function Documentation</h2>
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<h3 class="fn"><a name="5514c7"></a>QLabel::QLabel<65>(<28><a href="qwidget.html">QWidget</a><EFBFBD>*<2A>buddy, const<73><a href="qstring.html">QString</a><EFBFBD>&<EFBFBD>text, <a href="qwidget.html">QWidget</a><EFBFBD>*<2A>parent, const<73>char<61>*<2A>name=0, WFlags<67>f=0<>)</h3>
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<p>Constructs a label with a text and a buddy.
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<p>The <em>text</em> is set with <a href="#dffb43">setText</a>(). The <em>buddy</em> is set with <a href="#191701">setBuddy</a>().
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<p>The <em>parent, name</em> and <em>f</em> arguments are passed to the <a href="qframe.html">QFrame</a>
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constructor.
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<p>See also <a href="#dffb43">setText</a>(), <a href="#191701">setBuddy</a>(), <a href="#1f406e">setAlignment</a>(), <a href="qframe.html#c0d758">setFrameStyle</a>() and <a href="#ed9b8b">setIndent</a>().
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<h3 class="fn"><a name="39107d"></a>QLabel::QLabel<65>(<28><a href="qwidget.html">QWidget</a><EFBFBD>*<2A>parent, const<73>char<61>*<2A>name=0, WFlags<67>f=0<>)</h3>
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<p>Constructs an empty label.
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<p>The <em>parent, name</em> and <em>f</em> arguments are passed to the <a href="qframe.html">QFrame</a>
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constructor.
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<p>See also <a href="#1f406e">setAlignment</a>(), <a href="qframe.html#c0d758">setFrameStyle</a>() and <a href="#ed9b8b">setIndent</a>().
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<h3 class="fn"><a name="2bafbb"></a>QLabel::QLabel<65>(<28>const<73><a href="qstring.html">QString</a><EFBFBD>&<EFBFBD>text, <a href="qwidget.html">QWidget</a><EFBFBD>*<2A>parent, const<73>char<61>*<2A>name=0, WFlags<67>f=0<>)</h3>
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<p>Constructs a label with a text. The <em>text</em> is set with <a href="#dffb43">setText</a>().
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<p>The <em>parent, name</em> and <em>f</em> arguments are passed to the <a href="qframe.html">QFrame</a>
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constructor.
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<p>See also <a href="#dffb43">setText</a>(), <a href="#1f406e">setAlignment</a>(), <a href="qframe.html#c0d758">setFrameStyle</a>() and <a href="#ed9b8b">setIndent</a>().
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<h3 class="fn"><a name="9958af"></a>QLabel::~QLabel<65>()</h3>
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<p>Destructs the label.
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<h3 class="fn">int<EFBFBD><a name="2fcaa3"></a>QLabel::alignment<6E>()<29>const</h3>
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<p>Returns the alignment setting.
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<p>See also <a href="#1f406e">setAlignment</a>().
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<h3 class="fn">bool<EFBFBD><a name="75b2a1"></a>QLabel::autoResize<7A>()<29>const</h3>
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<p><b>This function is obsolete.</b> It is provided to keep old source working, and will probably be removed in a future version of Qt. We strongly advise against using it in new code.<p>
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<p>Returns TRUE if auto-resizing is enabled, or FALSE if auto-resizing
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is disabled.
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<p>Auto-resizing is disabled by default.
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<p>See also <a href="#c0e104">setAutoResize</a>().
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<h3 class="fn"><a href="qwidget.html">QWidget</a><EFBFBD>*<2A><a name="123954"></a>QLabel::buddy<64>()<29>const</h3>
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<p>Returns the buddy of this label, or 0 if no buddy is currently set.
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<p>See also <a href="#191701">setBuddy</a>().
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<h3 class="fn">void<EFBFBD><a name="be73f3"></a>QLabel::clear<61>() <code>[slot]</code></h3>
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<p>Clears any label contents. Equivalent with <a href="#dffb43">setText</a>( "" ).
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<h3 class="fn">void<EFBFBD><a name="fac264"></a>QLabel::drawContents<74>(<28><a href="qpainter.html">QPainter</a><EFBFBD>*<2A>p<EFBFBD>) <code>[virtual<61>protected]</code></h3>
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<p>Draws the label contents using the painter <em>p.</em>
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<p>Reimplemented from <a href="qframe.html#99e687">QFrame.</a>
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<h3 class="fn">void<EFBFBD><a name="479dd2"></a>QLabel::drawContentsMask<73>(<28><a href="qpainter.html">QPainter</a><EFBFBD>*<2A>p<EFBFBD>) <code>[virtual<61>protected]</code></h3>
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<p>Draws the label contents mask using the painter <em>p.</em>
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Used only in transparent mode.
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<p>See also <a href="qwidget.html#c7a335">QWidget::setAutoMask</a>();.
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<p>Reimplemented from <a href="qframe.html#4cbf11">QFrame.</a>
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<h3 class="fn">void<EFBFBD><a name="0435a2"></a>QLabel::fontChange<67>(<28>const<73><a href="qfont.html">QFont</a><EFBFBD>&<EFBFBD>) <code>[virtual<61>protected]</code></h3>
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<p>Reimplemented for internal reasons; the API is not affected.
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<p>Reimplemented from <a href="qwidget.html#570a8f">QWidget.</a>
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<h3 class="fn">bool<EFBFBD><a name="7e1f73"></a>QLabel::hasScaledContents<74>()<29>const</h3>
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<p>Returns whether the label will scale its contents to fill all
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available space.
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<p>See also <a href="#e9e3cf">setScaledContents</a>().
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<h3 class="fn">int<EFBFBD><a name="dae451"></a>QLabel::heightForWidth<74>(<28>int<6E>w<EFBFBD>)<29>const <code>[virtual]</code></h3>
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<p>Reimplemented for internal reasons; the API is not affected.
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<p>Reimplemented from <a href="qwidget.html#2e8476">QWidget.</a>
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<h3 class="fn">int<EFBFBD><a name="e3c907"></a>QLabel::indent<6E>()<29>const</h3>
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<p>Returns the indent of the label.
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<p>See also <a href="#ed9b8b">setIndent</a>().
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<h3 class="fn"><a href="qsize.html">QSize</a><EFBFBD><a name="53c8c7"></a>QLabel::minimumSizeHint<6E>()<29>const <code>[virtual]</code></h3>
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<p>Reimplemented for internal reasons; the API is not affected.
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<p>Reimplemented from <a href="qwidget.html#3f0fc2">QWidget.</a>
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<h3 class="fn"><a href="qmovie.html">QMovie</a>*<2A><a name="7dcdfe"></a>QLabel::movie<69>()<29>const</h3>
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<p>If the label contains a movie, returns a pointer to it. Otherwise,
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returns 0.
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<p>See also <a href="#60de9f">setMovie</a>().
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<h3 class="fn"><a href="qpixmap.html">QPixmap</a><EFBFBD>*<2A><a name="101ecb"></a>QLabel::pixmap<61>()<29>const</h3>
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<p>If the label contains a pixmap, returns a pointer to it. Otherwise,
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returns 0.
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|
<p>See also <a href="#f3f301">setPixmap</a>().
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<h3 class="fn">void<EFBFBD><a name="3cb6e7"></a>QLabel::resizeEvent<6E>(<28><a href="qresizeevent.html">QResizeEvent</a><EFBFBD>*<2A>e<EFBFBD>) <code>[virtual<61>protected]</code></h3>
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|
<p>Reimplemented for internal reasons; the API is not affected.
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|
<p>Reimplemented from <a href="qwidget.html#28c156">QWidget.</a>
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|
<h3 class="fn">void<EFBFBD><a name="1f406e"></a>QLabel::setAlignment<6E>(<28>int<6E>alignment<6E>) <code>[virtual]</code></h3>
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<p>Sets the alignment of the label contents.
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<p>The <em>alignment</em> must be a bitwise OR of <a href="qt.html#AlignmentFlags">Qt::AlignmentFlags</a>
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values. The <code>WordBreak, ExpandTabs, SingleLine</code> and <code>ShowPrefix</code> flags apply only if the label contains a plain text, and
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|
are otherwise ignored. The <code>DontClip</code> flag is always ignored.
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<p>If the label has a buddy, the <code>ShowPrefix</code> flag is forced to TRUE.
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<p>The default alignment is <code>AlignLeft | AlignVCenter |
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ExpandTabs</code> if the label doesn't have a buddy and
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<code>AlignLeft | AlignVCenter | ExpandTabs | ShowPrefix </code> if
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the label has a buddy.
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<p>See also <a href="qt.html#AlignmentFlags">Qt::AlignmentFlags</a>, <a href="#2fcaa3">alignment</a>(), <a href="#191701">setBuddy</a>() and <a href="#dffb43">setText</a>().
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<p>Examples:
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|
|
|
<a href="cursor-cursor-cpp.html#setAlignment">cursor/cursor.cpp</a>
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|
|
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|
<a href="layout-layout-cpp.html#setAlignment">layout/layout.cpp</a>
|
|
|
|
|
<a href="popup-popup-cpp.html#setAlignment">popup/popup.cpp</a>
|
|
|
|
|
<a href="qmag-qmag-cpp.html#setAlignment">qmag/qmag.cpp</a>
|
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|
<a href="customlayout-main-cpp.html#setAlignment">customlayout/main.cpp</a>
|
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|
<h3 class="fn">void<EFBFBD><a name="1b6d73"></a>QLabel::setAutoMask<73>(<28>bool<6F>b<EFBFBD>) <code>[virtual]</code></h3>
|
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|
|
<p>Reimplemented for internal reasons; the API is not affected.
|
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|
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|
<p>Reimplemented from <a href="qwidget.html#c7a335">QWidget.</a>
|
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|
<h3 class="fn">void<EFBFBD><a name="c0e104"></a>QLabel::setAutoResize<7A>(<28>bool<6F>enable<6C>) <code>[virtual]</code></h3>
|
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|
<p><b>This function is obsolete.</b> It is provided to keep old source working, and will probably be removed in a future version of Qt. We strongly advise against using it in new code.<p>
|
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|
Enables auto-resizing if <em>enable</em> is TRUE, or disables it if <em>enable</em> is FALSE.
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|
<p>When auto-resizing is enabled, the label will resize itself to fit
|
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|
the contents whenever the contents change. The top left corner is
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|
not moved. This is useful for QLabel widgets that are not managed by
|
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|
|
|
a <a href="qlayout.html">QLayout</a> (e.g. top-level widgets).
|
|
|
|
|
<p>Auto-resizing is disabled by default.
|
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|
<p>See also <a href="#75b2a1">autoResize</a>(), <a href="qwidget.html#ab3108">adjustSize</a>() and <a href="#614dd5">sizeHint</a>().
|
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|
|
|
<h3 class="fn">void<EFBFBD><a name="191701"></a>QLabel::setBuddy<64>(<28><a href="qwidget.html">QWidget</a><EFBFBD>*<2A>buddy<64>) <code>[virtual]</code></h3>
|
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|
<p>Sets the buddy of this label to <em>buddy.</em>
|
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|
|
<p>When the user presses the accelerator key indicated by this label,
|
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|
the keyboard focus is transferred to the label's buddy widget.
|
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|
|
|
<p>The buddy mechanism is only available for QLabels that contain a
|
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|
|
plain text in which one letter is prefixed with '&'. It is this
|
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|
|
|
letter that is set as the accelerator key. The letter is displayed
|
|
|
|
|
underlined, and the '&' is not displayed (i.e. the <code>ShowPrefix</code>
|
|
|
|
|
alignment flag is turned on; see <a href="#1f406e">setAlignment</a>()).
|
|
|
|
|
<p>In a dialog, you might create two data entry widgets and a label for
|
|
|
|
|
each, and set up the geometry layout so each label is just to the
|
|
|
|
|
left of its data entry widget (its "buddy"), somewhat like this:
|
|
|
|
|
<p><pre> <a href="qlineedit.html">QLineEdit</a> *nameEd = new <a href="qlineedit.html">QLineEdit</a>( this );
|
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|
|
<a href="qlabel.html">QLabel</a> *nameLb = new <a href="qlabel.html">QLabel</a>( "&Name:", this );
|
|
|
|
|
nameLb-><a href="#191701">setBuddy</a>( nameEd );
|
|
|
|
|
<a href="qlineedit.html">QLineEdit</a> *phoneEd = new <a href="qlineedit.html">QLineEdit</a>( this );
|
|
|
|
|
<a href="qlabel.html">QLabel</a> *phoneLb = new <a href="qlabel.html">QLabel</a>( "&Phone:", this );
|
|
|
|
|
phoneLb-><a href="#191701">setBuddy</a>( phoneEd );
|
|
|
|
|
// ( layout setup not shown )
|
|
|
|
|
</pre>
|
|
|
|
|
<p>With the code above, the focus jumps to the Name field when the user
|
|
|
|
|
presses Alt-N, and to the Phone field when the user presses Alt-P.
|
|
|
|
|
<p>To unset a previously set buddy, call this function with <em>buddy</em>
|
|
|
|
|
set to 0.
|
|
|
|
|
<p>See also <a href="#123954">buddy</a>(), <a href="#dffb43">setText</a>(), <a href="qaccel.html">QAccel</a> and <a href="#1f406e">setAlignment</a>().
|
|
|
|
|
<p>Examples:
|
|
|
|
|
<a href="layout-layout-cpp.html#setBuddy">layout/layout.cpp</a>
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="ed9b8b"></a>QLabel::setIndent<6E>(<28>int<6E>indent<6E>)</h3>
|
|
|
|
|
<p>Sets the indent of the label to <em>indent</em> pixels.
|
|
|
|
|
<p>The indent applies to the left edge if <a href="#2fcaa3">alignment</a>() is <code>AlignLeft,</code>
|
|
|
|
|
to the right edge if alignment() is <code>AlignRight,</code> to the top edge
|
|
|
|
|
if alignment() is <code>AlignTop,</code> and to to the bottom edge if
|
|
|
|
|
alignment() is <code>AlignBottom.</code>
|
|
|
|
|
<p>If <em>indent</em> is negative, or if no indent has been set, the label
|
|
|
|
|
computes the effective indent as follows: If <a href="qframe.html#e0ccef">frameWidth</a>() is 0, the
|
|
|
|
|
effective indent becomes 0. If frameWidth() is greater than 0, the
|
|
|
|
|
effective indent becomes half the width of the "x" character of the
|
|
|
|
|
widget's current <a href="qwidget.html#3a7237">font</a>().
|
|
|
|
|
<p>If <em>indent</em> is non-negative, the effective indent is <em>indent</em>
|
|
|
|
|
pixels.
|
|
|
|
|
<p>See also <a href="#e3c907">indent</a>(), <a href="#1f406e">setAlignment</a>(), <a href="qframe.html#e0ccef">frameWidth</a>() and <a href="qwidget.html#3a7237">font</a>().
|
|
|
|
|
<p>Examples:
|
|
|
|
|
<a href="movies-main-cpp.html#setIndent">movies/main.cpp</a>
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="60de9f"></a>QLabel::setMovie<69>(<28>const<73><a href="qmovie.html">QMovie</a><EFBFBD>&<EFBFBD>movie<EFBFBD>) <code>[virtual<61>slot]</code></h3>
|
|
|
|
|
<p>Sets the label contents to <em>movie.</em> Any previous content is cleared.
|
|
|
|
|
<p>The buddy accelerator, if any, is disabled.
|
|
|
|
|
<p>The label resizes itself if auto-resizing is enabled.
|
|
|
|
|
<p>See also <a href="#7dcdfe">movie</a>() and <a href="#191701">setBuddy</a>().
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="1a8f6a"></a>QLabel::setNum<75>(<28>double<6C>num<75>) <code>[virtual<61>slot]</code></h3>
|
|
|
|
|
<p>Sets the label contents to a plain text containing the printed value
|
|
|
|
|
of <em>num.</em> Does nothing if this is equal to the current contents of
|
|
|
|
|
the label. Any previous content is cleared.
|
|
|
|
|
<p>The buddy accelerator, if any, is disabled.
|
|
|
|
|
<p>The label resizes itself if auto-resizing is enabled.
|
|
|
|
|
<p>See also <a href="#dffb43">setText</a>(), <a href="qstring.html#01d80b">QString::setNum</a>() and <a href="#191701">setBuddy</a>().
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="301e3c"></a>QLabel::setNum<75>(<28>int<6E>num<75>) <code>[virtual<61>slot]</code></h3>
|
|
|
|
|
<p>Sets the label contents to a plain text containing the printed value
|
|
|
|
|
of <em>num.</em> Does nothing if this is equal to the current contents of
|
|
|
|
|
the label. Any previous content is cleared.
|
|
|
|
|
<p>The buddy accelerator, if any, is disabled.
|
|
|
|
|
<p>The label resizes itself if auto-resizing is enabled.
|
|
|
|
|
<p>See also <a href="#dffb43">setText</a>(), <a href="qstring.html#01d80b">QString::setNum</a>() and <a href="#191701">setBuddy</a>().
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="f3f301"></a>QLabel::setPixmap<61>(<28>const<73><a href="qpixmap.html">QPixmap</a><EFBFBD>&<EFBFBD>pixmap<EFBFBD>) <code>[virtual<61>slot]</code></h3>
|
|
|
|
|
<p>Sets the label contents to <em>pixmap.</em> Any previous content is cleared.
|
|
|
|
|
<p>The buddy accelerator, if any, is disabled.
|
|
|
|
|
<p>The label resizes itself if auto-resizing is enabled.
|
|
|
|
|
<p>See also <a href="#101ecb">pixmap</a>() and <a href="#191701">setBuddy</a>().
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="e9e3cf"></a>QLabel::setScaledContents<74>(<28>bool<6F>enable<6C>)</h3>
|
|
|
|
|
<p>When called with <em>enable</em> == TRUE, and the label shows a pixmap,
|
|
|
|
|
it will scale the pixmap to fill available space.
|
|
|
|
|
<p>See also <a href="#7e1f73">hasScaledContents</a>().
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="dffb43"></a>QLabel::setText<78>(<28>const<73><a href="qstring.html">QString</a><EFBFBD>&<EFBFBD>text<EFBFBD>) <code>[virtual<61>slot]</code></h3>
|
|
|
|
|
<p>Sets the label contents to <em>text,</em> or does nothing if <em>text</em> is
|
|
|
|
|
equal to the current contents of the label. Any previous content is
|
|
|
|
|
cleared.
|
|
|
|
|
<p><em>text</em> will be interpreted either as a plain text or as a rich
|
|
|
|
|
text, depending on the text format setting; see <a href="#5de3f9">setTextFormat</a>(). The
|
|
|
|
|
default setting is <code>AutoText,</code> i.e. QLabel will try to auto-detect
|
|
|
|
|
the format of <em>text.</em>
|
|
|
|
|
<p>If <em>text</em> is interpreted as a plain text, and a buddy has been set,
|
|
|
|
|
the buddy accelerator key is updated from the new text.
|
|
|
|
|
<p>The label resizes itself if auto-resizing is enabled.
|
|
|
|
|
<p>Note that Qlabel is well suited to display small rich text documents
|
|
|
|
|
only. For large documents, use <a href="qtextview.html">QTextView</a> instead. It will flicker
|
|
|
|
|
less on resize and can also provide a scrollbar if necessary.
|
|
|
|
|
<p>See also <a href="#72cf09">text</a>(), <a href="#5de3f9">setTextFormat</a>(), <a href="#191701">setBuddy</a>() and <a href="#1f406e">setAlignment</a>().
|
|
|
|
|
<p>Examples:
|
|
|
|
|
<a href="cursor-cursor-cpp.html#setText">cursor/cursor.cpp</a>
|
|
|
|
|
<a href="layout-layout-cpp.html#setText">layout/layout.cpp</a>
|
|
|
|
|
<a href="popup-popup-cpp.html#setText">popup/popup.cpp</a>
|
|
|
|
|
<a href="qmag-qmag-cpp.html#setText">qmag/qmag.cpp</a>
|
|
|
|
|
<a href="customlayout-main-cpp.html#setText">customlayout/main.cpp</a>
|
|
|
|
|
<h3 class="fn">void<EFBFBD><a name="5de3f9"></a>QLabel::setTextFormat<61>(<28><a href="qt.html#TextFormat">Qt::TextFormat</a><EFBFBD>format<EFBFBD>)</h3>
|
|
|
|
|
<p>Sets the text format to <em>format.</em> See the <a href="qt.html#TextFormat">Qt::TextFormat</a> enum for
|
|
|
|
|
an explanation of the possible options.
|
|
|
|
|
<p>The default format is <code>AutoText.</code>
|
|
|
|
|
<p>See also <a href="#0b92ed">textFormat</a>() and <a href="#dffb43">setText</a>().
|
|
|
|
|
<h3 class="fn"><a href="qsize.html">QSize</a><EFBFBD><a name="614dd5"></a>QLabel::sizeHint<6E>()<29>const <code>[virtual]</code></h3>
|
|
|
|
|
<p>Reimplemented for internal reasons; the API is not affected.
|
|
|
|
|
<p>Examples:
|
|
|
|
|
<a href="layout-layout-cpp.html#sizeHint">layout/layout.cpp</a>
|
|
|
|
|
<p>Reimplemented from <a href="qwidget.html#290bcd">QWidget.</a>
|
|
|
|
|
<h3 class="fn"><a href="qsizepolicy.html">QSizePolicy</a><EFBFBD><a name="26e1d9"></a>QLabel::sizePolicy<63>()<29>const <code>[virtual]</code></h3>
|
|
|
|
|
<p>Reimplemented for internal reasons; the API is not affected.
|
|
|
|
|
<p>Reimplemented from <a href="qwidget.html#2d5d13">QWidget.</a>
|
|
|
|
|
<h3 class="fn"><a href="qstring.html">QString</a><EFBFBD><a name="72cf09"></a>QLabel::text<78>()<29>const</h3>
|
|
|
|
|
<p>Returns the label text. If the content is a plain or a rich text,
|
|
|
|
|
this is the string that was passed to <a href="#dffb43">setText</a>(). Otherwise, it is an
|
|
|
|
|
empty/null string.
|
|
|
|
|
<p>See also <a href="#dffb43">setText</a>(), <a href="#1a8f6a">setNum</a>() and <a href="#be73f3">clear</a>().
|
|
|
|
|
<h3 class="fn">Qt::TextFormat<61><a name="0b92ed"></a>QLabel::textFormat()<29>const</h3>
|
|
|
|
|
<p>Returns the current text format.
|
|
|
|
|
<p>See also <a href="#5de3f9">setTextFormat</a>().
|
|
|
|
|
<hr><p>
|
|
|
|
|
Search the documentation, FAQ, qt-interest archive and more (uses
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<a href="http://www.trolltech.com">www.trolltech.com</a>):<br>
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<form method=post action="http://www.trolltech.com/search.cgi">
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</nobr></form><hr><p>
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This file is part of the <a href="index.html">Qt toolkit</a>,
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copyright © 1995-2006
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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 <20> 2006 Trolltech<td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
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<td align="right"><div align="right">Qt version 3.0.0-snapshot</div>
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</table></div></address></body></html>
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