File Selections
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( const 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,
const 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.
#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)));
}
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");
g_signal_connect (G_OBJECT (filew), "destroy",
G_CALLBACK (gtk_main_quit), NULL);
/* Connect the ok_button to file_ok_sel function */
g_signal_connect (G_OBJECT (GTK_FILE_SELECTION (filew)->ok_button),
"clicked", G_CALLBACK (file_ok_sel), (gpointer) filew);
/* Connect the cancel_button to destroy the widget */
g_signal_connect_swapped (G_OBJECT (GTK_FILE_SELECTION (filew)->cancel_button),
"clicked", G_CALLBACK (gtk_widget_destroy),
G_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;
} |