<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Chapter 6. Miscellaneous Widgets</title> <link rel="stylesheet" href="style.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2"> <link rel="start" href="index.html" title="Programming with gtkmm"> <link rel="up" href="index.html" title="Programming with gtkmm"> <link rel="prev" href="ch05s04.html" title="Example"> <link rel="next" href="ch06s02.html" title="Entry"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr><th colspan="3" align="center">Chapter 6. Miscellaneous Widgets</th></tr> <tr> <td width="20%" align="left"> <a accesskey="p" href="ch05s04.html"><img src="../icons/prev.png" alt="Prev"></a> </td> <th width="60%" align="center"> </th> <td width="20%" align="right"> <a accesskey="n" href="ch06s02.html"><img src="../icons/next.png" alt="Next"></a> </td> </tr> </table> <hr> </div> <div class="chapter" lang="en"> <div class="titlepage"><div><div><h2 class="title"> <a name="sec-miscwidgets"></a>Chapter 6. Miscellaneous Widgets</h2></div></div></div> <div class="toc"> <p><b>Table of Contents</b></p> <ul> <li><span class="sect1"><a href="ch06.html#sec-Labels">Label</a></span></li> <li><span class="sect1"><a href="ch06s02.html">Entry</a></span></li> <li><span class="sect1"><a href="ch06s03.html">SpinButton</a></span></li> <li><span class="sect1"><a href="ch06s04.html">ProgressBar</a></span></li> <li><span class="sect1"><a href="ch06s05.html">Tooltips</a></span></li> </ul> </div> <div class="sect1" lang="en"> <div class="titlepage"><div><div><h2 class="title" style="clear: both"> <a name="sec-Labels"></a>Label</h2></div></div></div> <p> Labels are the main method of placing non-editable text in windows, for instance to place a title next to a <code class="classname">Entry</code> widget. You can specify the text in the constructor, or with the <code class="function">set_text()</code> method. </p> <p> The width of the label will be adjusted automatically. You can produce multi-line labels by putting line breaks ("\n") in the label string. </p> <p> The label text can be justified using the <code class="function">set_justify()</code> method. The widget is also capable of word-wrapping - this can be activated with <code class="function">set_line_wrap()</code>. </p> <p> TODO: gtkmm2: markup. </p> <p><a class="ulink" href="../../reference/html/classGtk_1_1Label.html" target="_top">Reference</a></p> <div class="sect2" lang="en"> <div class="titlepage"><div><div><h3 class="title"> <a name="id2521266"></a>Example</h3></div></div></div> <p> Below is a short example to illustrate these functions. This example makes use of the Frame widget to better demonstrate the label styles. (The Frame widget is explained in the <a class="link" href="ch07.html#sec-Frame" title="Frame">Frame</a> section.) </p> <div class="figure"> <a name="figure-label"></a><p class="title"><b>Figure 6.1. Label</b></p> <div class="figure-contents"><div class="screenshot"><div><img src="../figures/label.png" alt="Label"></div></div></div> </div> <br class="figure-break"><p><a class="ulink" href="../../../examples/book/label" target="_top">Source Code</a></p> <p>File: <code class="filename">examplewindow.h</code> </p> <pre class="programlisting"> #ifndef GTKMM_EXAMPLEWINDOW_H #define GTKMM_EXAMPLEWINDOW_H #include <gtkmm.h> class ExampleWindow : public Gtk::Window { public: ExampleWindow(); virtual ~ExampleWindow(); protected: //Child widgets: Gtk::HBox m_HBox; Gtk::VBox m_VBox, m_VBox2; Gtk::Frame m_Frame_Normal, m_Frame_Multi, m_Frame_Left, m_Frame_Right, m_Frame_LineWrapped, m_Frame_FilledWrapped, m_Frame_Underlined; Gtk::Label m_Label_Normal, m_Label_Multi, m_Label_Left, m_Label_Right, m_Label_LineWrapped, m_Label_FilledWrapped, m_Label_Underlined; }; #endif //GTKMM_EXAMPLEWINDOW_H </pre> <p>File: <code class="filename">main.cc</code> </p> <pre class="programlisting"> #include <gtkmm/main.h> #include "examplewindow.h" int main(int argc, char *argv[]) { Gtk::Main kit(argc, argv); ExampleWindow window; //Shows the window and returns when it is closed. Gtk::Main::run(window); return 0; } </pre> <p>File: <code class="filename">examplewindow.cc</code> </p> <pre class="programlisting"> #include "examplewindow.h" #include <iostream> ExampleWindow::ExampleWindow() : m_HBox(false, 5), m_VBox(false, 5), m_Frame_Normal("Normal Label"), m_Frame_Multi("Multi-line Label"), m_Frame_Left("Left Justified Label"), m_Frame_Right("Right Justified Label"), m_Frame_LineWrapped("Line wrapped label"), m_Frame_FilledWrapped("Filled, wrapped label"), m_Frame_Underlined("Underlined label"), m_Label_Normal("_This is a Normal label", true), m_Label_Multi("This is a Multi-line label.\nSecond line\nThird line"), m_Label_Left("This is a Left-Justified\nMulti-line label.\nThird line"), m_Label_Right("This is a Right-Justified\n" "Multi-line label.\nFourth line, (j/k)"), m_Label_Underlined("This label is underlined!\n" "This one is underlined in quite a funky fashion") { set_title("Label"); set_border_width(5); add(m_HBox); m_HBox.pack_start(m_VBox, Gtk::PACK_SHRINK); m_Frame_Normal.add(m_Label_Normal); m_VBox.pack_start(m_Frame_Normal, Gtk::PACK_SHRINK); m_Frame_Multi.add(m_Label_Multi); m_VBox.pack_start(m_Frame_Multi, Gtk::PACK_SHRINK); m_Label_Left.set_justify(Gtk::JUSTIFY_LEFT); m_Frame_Left.add(m_Label_Left); m_VBox.pack_start(m_Frame_Left, Gtk::PACK_SHRINK); m_Label_Right.set_justify(Gtk::JUSTIFY_RIGHT); m_Frame_Right.add(m_Label_Right); m_VBox.pack_start(m_Frame_Right, Gtk::PACK_SHRINK); m_HBox.pack_start(m_VBox2, Gtk::PACK_SHRINK); m_Label_LineWrapped.set_text( "This is an example of a line-wrapped label. It " \ /* add a big space to the next line to test spacing */ \ "should not be taking up the entire " "width allocated to it, but automatically " \ "wraps the words to fit. " \ "The time has come, for all good men, to come to " \ "the aid of their party. " \ "The sixth sheik's six sheep's sick.\n" \ " It supports multiple paragraphs correctly, " \ "and correctly adds " \ "many extra spaces. "); m_Label_LineWrapped.set_line_wrap(); m_Frame_LineWrapped.add(m_Label_LineWrapped); m_VBox2.pack_start(m_Frame_LineWrapped, Gtk::PACK_SHRINK); m_Label_FilledWrapped.set_text( "This is an example of a line-wrapped, filled label. " \ "It should be taking " \ "up the entire width allocated to it. " \ "Here is a sentence to prove " \ "my point. Here is another sentence. " \ "Here comes the sun, do de do de do.\n" \ " This is a new paragraph.\n" \ " This is another newer, longer, better " \ "paragraph. It is coming to an end, " \ "unfortunately."); m_Label_FilledWrapped.set_justify(Gtk::JUSTIFY_FILL); m_Label_FilledWrapped.set_line_wrap(); m_Frame_FilledWrapped.add(m_Label_FilledWrapped); m_VBox2.pack_start(m_Frame_FilledWrapped, Gtk::PACK_SHRINK); m_Label_Underlined.set_justify(Gtk::JUSTIFY_LEFT); m_Label_Underlined.set_pattern ( "_________________________ _ _________ _ ______" " __ _______ ___"); m_Frame_Underlined.add(m_Label_Underlined); m_VBox2.pack_start(m_Frame_Underlined, Gtk::PACK_SHRINK); show_all_children(); } ExampleWindow::~ExampleWindow() { } </pre> </div> </div> </div> <div class="navfooter"> <hr> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"> <a accesskey="p" href="ch05s04.html"><img src="../icons/prev.png" alt="Prev"></a> </td> <td width="20%" align="center"> </td> <td width="40%" align="right"> <a accesskey="n" href="ch06s02.html"><img src="../icons/next.png" alt="Next"></a> </td> </tr> <tr> <td width="40%" align="left" valign="top">Example </td> <td width="20%" align="center"><a accesskey="h" href="index.html"><img src="../icons/home.png" alt="Home"></a></td> <td width="40%" align="right" valign="top"> Entry</td> </tr> </table> </div> </body> </html>