Glade 3 and C, signal Handling for button and textbox

Question

I am a beginner at Glade but have experience in C programming.

I am trying to build a project that accepts two values and displays sum.

I have used following:

textbox1 - (entry1) ---- for first value,
textbox2 - (entry2) ---- for 2nd value,
textbox3 - (entry3) ---- to display result,
button - (button1) ---- to calculate sum,
signal - (on_button1_clicked) ---- to handle sum function.

Please help me with the signal code.

#include <gtk/gtk.h>
#include <stdio.h>

    GtkBuilder *builder;
    GtkWidget  *window;
    GError     *error = NULL;

void on_button1_clicked
{

// Need Help in this section

}

void on_window1_destroy (GtkObject *object, gpointer user_data)
{
gtk_main_quit();
}

int main( int argc, char **argv )
{

    /* Init GTK+ */
    gtk_init( &argc, &argv );

    /* Create new GtkBuilder object */
    builder = gtk_builder_new();
    /* Load UI from file. If error occurs, report it and quit application.
     * Replace "tut.glade" with your saved project. */
    if( ! gtk_builder_add_from_file( builder, "sum.glade", &error ) )
    {
        g_warning( "%s", error->message );
        g_free( error );
        return( 1 );
    }

    /* Get main window pointer from UI */
    window = GTK_WIDGET( gtk_builder_get_object( builder, "window1" ) );

    /* Connect signals */
    gtk_builder_connect_signals( builder, NULL );

    /* Destroy builder, since we don't need it anymore */
    g_object_unref( G_OBJECT( builder ) );

    /* Show window. All other widgets are automatically shown by GtkBuilder */
    gtk_widget_show( window );

    /* Start main loop */
    gtk_main();

    return( 0 );
}

Answer 1

I tried the stuff out and with some help could make it work. Here is what you need to refer Click