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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="sec-dialogs-filedialog"></a>FileDialog and FileChooserDialog</h2></div></div></div>
<p>
The <code class="classname">FileChooserDialog</code> (deprecated since <span class="application">gtkmm</span> 4.10) and
<code class="classname">FileDialog</code> (available since <span class="application">gtkmm</span> 4.10) are suitable
for use with "Open" or "Save" menu items.
</p>
<p>
Most of the useful member methods for <code class="classname">FileChooserDialog</code>
are actually in the <code class="classname">Gtk::FileChooser</code> base class.
</p>
<p><a class="ulink" href="https://gnome.pages.gitlab.gnome.org/gtkmm/classGtk_1_1FileDialog.html" target="_top">FileDialog Reference</a></p>
<p><a class="ulink" href="https://gnome.pages.gitlab.gnome.org/gtkmm/classGtk_1_1FileChooserDialog.html" target="_top">FileChooserDialog Reference</a></p>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="filedialog-example"></a>Example</h3></div></div></div>
<div class="figure">
<a name="figure-dialogs-filedialog"></a><p class="title"><b>Figure 17.2. FileDialog</b></p>
<div class="figure-contents">
<div class="screenshot">
<div class="mediaobject"><img src="figures/dialogs_filedialog.png" alt="FileDialog"></div>
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<br class="figure-break">
<p><a class="ulink" href="https://gitlab.gnome.org/GNOME/gtkmm-documentation/tree/master/examples/book/dialogs/filedialog" target="_top">Source Code</a></p>
<p>File: <code class="filename">examplewindow.h</code> (For use with gtkmm 4)</p>
<pre class="programlisting"><code class="code">#ifndef GTKMM_EXAMPLEWINDOW_H
#define GTKMM_EXAMPLEWINDOW_H
#include <gtkmm.h>
class ExampleWindow : public Gtk::Window
{
public:
ExampleWindow();
~ExampleWindow() override;
protected:
//Signal handlers:
void on_button_file_clicked();
void on_button_folder_clicked();
void on_file_dialog_finish(const Glib::RefPtr<Gio::AsyncResult>& result,
const Glib::RefPtr<Gtk::FileDialog>& dialog);
void on_folder_dialog_finish(const Glib::RefPtr<Gio::AsyncResult>& result,
const Glib::RefPtr<Gtk::FileDialog>& dialog);
//Child widgets:
Gtk::Box m_ButtonBox;
Gtk::Button m_Button_File;
Gtk::Button m_Button_Folder;
};
#endif //GTKMM_EXAMPLEWINDOW_H
</code></pre>
<p>File: <code class="filename">examplewindow.cc</code> (For use with gtkmm 4)</p>
<pre class="programlisting"><code class="code">#include "examplewindow.h"
#include <iostream>
ExampleWindow::ExampleWindow()
: m_ButtonBox(Gtk::Orientation::VERTICAL),
m_Button_File("Choose File"),
m_Button_Folder("Choose Folder")
{
set_title("Gtk::FileDialog example");
set_child(m_ButtonBox);
m_ButtonBox.append(m_Button_File);
m_Button_File.set_expand(true);
m_Button_File.signal_clicked().connect(sigc::mem_fun(*this,
&ExampleWindow::on_button_file_clicked) );
m_ButtonBox.append(m_Button_Folder);
m_Button_Folder.set_expand(true);
m_Button_Folder.signal_clicked().connect(sigc::mem_fun(*this,
&ExampleWindow::on_button_folder_clicked) );
}
ExampleWindow::~ExampleWindow()
{
}
void ExampleWindow::on_button_file_clicked()
{
auto dialog = Gtk::FileDialog::create();
// Add filters, so that only certain file types can be selected:
auto filters = Gio::ListStore<Gtk::FileFilter>::create();
auto filter_text = Gtk::FileFilter::create();
filter_text->set_name("Text files");
filter_text->add_mime_type("text/plain");
filters->append(filter_text);
auto filter_cpp = Gtk::FileFilter::create();
filter_cpp->set_name("C/C++ files");
filter_cpp->add_mime_type("text/x-c");
filter_cpp->add_mime_type("text/x-c++");
filter_cpp->add_mime_type("text/x-c-header");
filters->append(filter_cpp);
auto filter_any = Gtk::FileFilter::create();
filter_any->set_name("Any files");
filter_any->add_pattern("*");
filters->append(filter_any);
dialog->set_filters(filters);
// Show the dialog and wait for a user response:
dialog->open(sigc::bind(sigc::mem_fun(
*this, &ExampleWindow::on_file_dialog_finish), dialog));
}
void ExampleWindow::on_file_dialog_finish(const Glib::RefPtr<Gio::AsyncResult>& result,
const Glib::RefPtr<Gtk::FileDialog>& dialog)
{
// Handle the response:
try
{
auto file = dialog->open_finish(result);
// Notice that this is a std::string, not a Glib::ustring.
auto filename = file->get_path();
std::cout << "File selected: " << filename << std::endl;
}
catch (const Gtk::DialogError& err)
{
// Can be thrown by dialog->open_finish(result).
std::cout << "No file selected. " << err.what() << std::endl;
}
catch (const Glib::Error& err)
{
std::cout << "Unexpected exception. " << err.what() << std::endl;
}
}
void ExampleWindow::on_button_folder_clicked()
{
auto dialog = Gtk::FileDialog::create();
// Show the dialog and wait for a user response:
dialog->select_folder(sigc::bind(sigc::mem_fun(
*this, &ExampleWindow::on_folder_dialog_finish), dialog));
}
void ExampleWindow::on_folder_dialog_finish(const Glib::RefPtr<Gio::AsyncResult>& result,
const Glib::RefPtr<Gtk::FileDialog>& dialog)
{
// Handle the response:
try
{
auto folder = dialog->select_folder_finish(result);
std::cout << "Folder selected: " << folder->get_path() << std::endl;
}
catch (const Gtk::DialogError& err)
{
// Can be thrown by dialog->select_folder_finish(result).
std::cout << "No folder selected. " << err.what() << std::endl;
}
catch (const Glib::Error& err)
{
std::cout << "Unexpected exception. " << err.what() << std::endl;
}
}
</code></pre>
<p>File: <code class="filename">main.cc</code> (For use with gtkmm 4)</p>
<pre class="programlisting"><code class="code">#include "examplewindow.h"
#include <gtkmm/application.h>
int main(int argc, char *argv[])
{
auto app = Gtk::Application::create("org.gtkmm.example");
//Shows the window and returns when it is closed.
return app->make_window_and_run<ExampleWindow>(argc, argv);
}
</code></pre>
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