The file selection widget is a quick and simple way to display a File dialog box. It comes complete with Ok, Cancel, and Help buttons, a great way to cut down on programming time.
To create a new file selection box use:
GtkWidget *gtk_file_selection_new( gchar *title ); |
To set the filename, for example to bring up a specific directory, or give a default filename, use this function:
void gtk_file_selection_set_filename( GtkFileSelection *filesel,
gchar *filename ); |
To grab the text that the user has entered or clicked on, use this function:
gchar *gtk_file_selection_get_filename( GtkFileSelection *filesel ); |
There are also pointers to the widgets contained within the file selection widget. These are:
dir_list file_list selection_entry selection_text main_vbox ok_button cancel_button help_button |
Most likely you will want to use the ok_button, cancel_button, and help_button pointers in signaling their use.
Included here is an example stolen from testgtk.c, modified to run on its own. As you will see, there is nothing much to creating a file selection widget. While in this example the Help button appears on the screen, it does nothing as there is not a signal attached to it.
/* example-start filesel filesel.c */
#include <gtk/gtk.h>
/* Get the selected filename and print it to the console */
void file_ok_sel( GtkWidget *w,
GtkFileSelection *fs )
{
g_print ("%s\n", gtk_file_selection_get_filename (GTK_FILE_SELECTION (fs)));
}
void destroy( GtkWidget *widget,
gpointer data )
{
gtk_main_quit ();
}
int main( int argc,
char *argv[] )
{
GtkWidget *filew;
gtk_init (&argc, &argv);
/* Create a new file selection widget */
filew = gtk_file_selection_new ("File selection");
gtk_signal_connect (GTK_OBJECT (filew), "destroy",
(GtkSignalFunc) destroy, &filew);
/* Connect the ok_button to file_ok_sel function */
gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (filew)->ok_button),
"clicked", (GtkSignalFunc) file_ok_sel, filew );
/* Connect the cancel_button to destroy the widget */
gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION
(filew)->cancel_button),
"clicked", (GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (filew));
/* Lets set the filename, as if this were a save dialog, and we are giving
a default filename */
gtk_file_selection_set_filename (GTK_FILE_SELECTION(filew),
"penguin.png");
gtk_widget_show(filew);
gtk_main ();
return 0;
}
/* example-end */ |