pub fn click_about(button: &Button, builder: &Builder) {
    let dialog: AboutDialog = builder.get_object("about_dialog").expect(
        "Couldn't get dialog",
    );
    if let Some(window) = button.get_toplevel().and_then(
        |w| w.downcast::<Window>().ok(),
    )
    {
        dialog.set_transient_for(Some(&window));
    }

    dialog.show();
    dialog.run();
    dialog.hide();
}
/*
 *   Here we define `click_about` function which impelements the logic
 *   that is responsible for pressing "About" button.
 */
Here we define `click_about` function which impelements the logic
that is responsible for pressing "About" button.
Here we define ` click_about ` function which impelements the logic that is responsible for pressing " About " button .
pub fn click_about(button: &Button, builder: &Builder) {
    let dialog: AboutDialog = builder.get_object("about_dialog").expect(
        "Couldn't get dialog",
    );
    if let Some(window) = button.get_toplevel().and_then(
        |w| w.downcast::<Window>().ok(),
    )
    {
        dialog.set_transient_for(Some(&window));
    }
    dialog.show();
    dialog.run();
    dialog.hide();
}
pub fn click_about ( button : & Button , builder : & Builder ) { let dialog : AboutDialog = builder . get_object ( " " ) . expect ( " " , ) ; if let Some ( window ) = button . get_toplevel ( ) . and_then ( | w | w . downcast :: < Window > ( ) . ok ( ) , ) { dialog . set_transient_for ( Some ( & window ) ) ; } dialog . show ( ) ; dialog . run ( ) ; dialog . hide ( ) ; }
Here we define `click_about` function which impelements the logic
   that is responsible for pressing "About" button.
Here we define ` click_about ` function which impelements the logic that is responsible for pressing " About " button .
button
&Button
builder
&Builder