gtk_signal

extern GtkWidget *toolbar;
extern GtkWidget *main_window;
extern GtkWidget *text_entry;
#include <stdlib.h>

//void destroy(GtkWidget *widget) {
void destroy() {
  gtk_main_quit ();
}

void resize(){
  gtk_widget_set_size_request(toolbar, 10, 10);
}

void open_file() {

    GtkWidget *dialog;

    dialog = gtk_file_chooser_dialog_new ("Open File",NULL,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));
      printf("Selected file: %s\n", filename);
      FILE *fp;
      fp = fopen(filename, "r");
      if (!fp) {
	fprintf(stderr, "Failed to load kernel.\n");
        exit(1);
      }
      GtkTextBuffer *tbuffer;
      GtkTextIter ei;
      tbuffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_entry));
      gtk_text_buffer_get_end_iter(tbuffer, &ei);
      gchar *contents;
      gsize len;
      if (g_file_get_contents(filename, &contents, &len, NULL)) {
	gtk_text_buffer_insert(tbuffer, &ei, contents, len);
	g_free(contents);
      }
      //char line[2048];
	//while (fgets(line, sizeof line, fp) != NULL) {
	   //gtk_text_buffer_insert(tbuffer, &ei, line, -1);
	//}
        gtk_widget_destroy (dialog);
      gtk_window_set_default_size((GtkWindow*)main_window,1366,700);
    } else {
        gtk_widget_destroy (dialog);
    }


}