Thanks for this, however, you forgot the close button, where scrolling suddenly stops. Fix:
~~~ @@ -745,10 +745,12 @@ gint notebook_new_tab(GeanyDocument *this)
align = gtk_alignment_new(1.0, 0.5, 0.0, 0.0); gtk_container_add(GTK_CONTAINER(align), btn); gtk_box_pack_start(GTK_BOX(hbox), align, TRUE, TRUE, 0);
+ gtk_widget_add_events(btn, GDK_SCROLL_MASK); + g_signal_connect(btn, "clicked", G_CALLBACK(notebook_tab_close_clicked_cb), this); /* button overrides event box, so make middle click on button also close tab */ g_signal_connect(btn, "button-press-event", G_CALLBACK(notebook_tab_click), this); /* handle style modification to keep button small as possible even when theme change */ g_signal_connect(btn, "style-set", G_CALLBACK(notebook_tab_close_button_style_set), NULL);
~~~