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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>Migrating from GtkFileSelection to GtkFileChooser</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GTK+ Reference Manual"><link rel="up" href="migrating.html" title="Part IV. Migrating from Previous Versions of GTK+"><link rel="prev" href="gtk-changes-2-0.html" title="Changes from 1.2 to 2.0"><link rel="next" href="gtkfilechooser-selection-modes.html" title="Selection Modes"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="gtk.html" title="Part I. GTK+ Overview"><link rel="part" href="gtkbase.html" title="Part II. GTK+ Core Reference"><link rel="part" href="gtkobjects.html" title="Part III. GTK+ Widgets and Objects"><link rel="chapter" href="ch01.html" title="Object Hierarchy"><link 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alt="Prev"></a></td><td><a accesskey="u" href="migrating.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">GTK+ Reference Manual</th><td><a accesskey="n" href="gtkfilechooser-selection-modes.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr></table><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="gtk-migrating-GtkFileChooser"></a>Migrating from GtkFileSelection to GtkFileChooser</h2></div><div><div class="author"><h3 class="author"><span class="firstname">Federico</span> <span class="surname">Mena-Quintero</span></h3><div class="affiliation"><div class="address"><p><br>   <code class="email"><<a class="email" href="mailto:federicoximian.com">federico<em class="parameter"><code>ximian.com</code></em></a>></code><br> </p></div></div></div></div></div></div><div class="toc"><dl><dt><span class="section"><a href="gtk-migrating-GtkFileChooser.html#gtkfilechooser-creating">Creating a GtkFileChooserDialog</a></span></dt><dt><span class="section"><a href="gtkfilechooser-selection-modes.html">Selection Modes</a></span></dt><dt><span class="section"><a href="gtkfilechooser-installing-preview.html">Installing a Preview widget</a></span></dt><dt><span class="section"><a href="gtkfilechooser-installing-extra-widgets.html">Installing Extra Widgets</a></span></dt><dt><span class="section"><a href="gtkfilechooser-new-features.html">New features</a></span></dt></dl></div><p> <a class="link" href="GtkFileChooser.html" title="GtkFileChooser"><span class="type">GtkFileChooser</span></a>, starting with GTK+ 2.4, is the new set of APIs for file selection widgets and dialogs. Previous versions of GTK+ used <a class="link" href="GtkFileSelection.html" title="GtkFileSelection"><span class="type">GtkFileSelection</span></a>, which has numerous problems. </p><p> <a class="link" href="GtkFileChooser.html" title="GtkFileChooser"><span class="type">GtkFileChooser</span></a> is an abstract interface that can be implemented by widgets that perform file selection tasks. Two widgets in GTK+ implement this interface: <a class="link" href="GtkFileChooserDialog.html" title="GtkFileChooserDialog"><span class="type">GtkFileChooserDialog</span></a> and <a class="link" href="GtkFileChooserWidget.html" title="GtkFileChooserWidget"><span class="type">GtkFileChooserWidget</span></a>. Most applications simply need to use <a class="link" href="GtkFileChooserDialog.html" title="GtkFileChooserDialog"><span class="type">GtkFileChooserDialog</span></a>, which is a dialog box that allows the user to select existing files for opening them, or to pick new filenames for saving documents. <a class="link" href="GtkFileChooserWidget.html" title="GtkFileChooserWidget"><span class="type">GtkFileChooserWidget</span></a> is for special applications that need to embed a file selection widget inside a larger window. In the context of GTK+, <a class="link" href="GtkFileChooserDialog.html" title="GtkFileChooserDialog"><span class="type">GtkFileChooserDialog</span></a> is simply a <a class="link" href="GtkDialog.html" title="GtkDialog"><span class="type">GtkDialog</span></a> box with a <a class="link" href="GtkFileChooserWidget.html" title="GtkFileChooserWidget"><span class="type">GtkFileChooserWidget</span></a>. inside. </p><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="gtkfilechooser-creating"></a>Creating a GtkFileChooserDialog</h2></div></div></div><p> To create a <a class="link" href="GtkFileChooserDialog.html" title="GtkFileChooserDialog"><span class="type">GtkFileChooserDialog</span></a>, you simply call <a class="link" href="GtkFileChooserDialog.html#gtk-file-chooser-dialog-new"><code class="function">gtk_file_chooser_dialog_new()</code></a>. This function is similar to <a class="link" href="GtkDialog.html#gtk-dialog-new"><code class="function">gtk_dialog_new()</code></a> in that it takes parameters for the title of the dialog box and its transient parent, as well as its buttons. In addition, it takes in an argument that determines whether the file chooser dialog will be used for opening existing files or for saving to a possibly new file. </p><p> Please see <a class="xref" href="GtkFileChooserDialog.html#gtkfilechooser-typical-usage" title="Example 35. Typical usage">Example 35, “Typical usage”</a> for how to create a simple file chooser dialog and extract the selected filename from it. </p></div></div></body></html>⌨️ 快捷键说明
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