A file chooser dialog, suitable for "File/Open" or "File/Save" commands
<gtk-file-chooser-dialog> is a dialog box suitable for use with
"File/Open" or "File/Save as" commands. This widget works by putting a
<gtk-file-chooser-widget> inside a <gtk-dialog>. It exposes the
<gtk-file-chooser-iface> interface, so you can use all of the
<gtk-file-chooser> functions on the file chooser dialog as well as those
for <gtk-dialog>.
Note that <gtk-file-chooser-dialog> does not have any methods of its own.
Instead, you should use the functions that work on a <gtk-file-chooser>.
In the simplest of cases, you can the following code to use
<gtk-file-chooser-dialog> to select a file for opening:
GtkWidget *dialog;
dialog = gtk_file_chooser_dialog_new ("Open File",
parent_window,
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
NULL);
if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
{
char *filename;
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
open_file (filename);
g_free (filename);
}
gtk_widget_destroy (dialog);
To use a dialog for saving, you can use this:
GtkWidget *dialog;
dialog = gtk_file_chooser_dialog_new ("Save File",
parent_window,
GTK_FILE_CHOOSER_ACTION_SAVE,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
NULL);
gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog), TRUE);
if (user_edited_a_new_document)
{
gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), default_folder_for_saving);
gtk_file_chooser_set_current_name (GTK_FILE_CHOOSER (dialog), "Untitled document");
}
else
gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (dialog), filename_for_existing_document);
if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
{
char *filename;
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
save_to_file (filename);
g_free (filename);
}
gtk_widget_destroy (dialog);
<gtk-file-chooser-dialog> inherits from <gtk-dialog>, so buttons
that go in its action area have response codes such as
<gtk-response-accept> and <gtk-response-cancel>. For example, you
could call gtk-file-chooser-dialog-new as follows:
GtkWidget *dialog;
dialog = gtk_file_chooser_dialog_new ("Open File",
parent_window,
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
NULL);
This will create buttons for "Cancel" and "Open" that use stock response
identifiers from <gtk-response-type>. For most dialog boxes you can use
your own custom response codes rather than the ones in
<gtk-response-type>, but <gtk-file-chooser-dialog> assumes that
its "accept"-type action, e.g. an "Open" or "Save" button, will have one
of the following response codes:
This is because <gtk-file-chooser-dialog> must intercept responses and
switch to folders if appropriate, rather than letting the dialog terminate
— the implementation uses these known response codes to know which
responses can be blocked if appropriate.
To summarize, make sure you use a stock response code when you use
<gtk-file-chooser-dialog> to ensure proper operation.