Remove the GC root for chidren of containers.

Keeping the GC root can cause a reference cycle when signals are involved.

Fixes: #254

generated/gtkd/gtk/Container.d

@@ -268,6 +268,32 @@ public class Container : Widget
 	{
 		this.gtkContainer = gtkContainer;
 		super(cast(GtkWidget*)gtkContainer, ownedRef);
+
+		Signals.connect(this, "add", cast(GCallback)&gtkd_container_add, null);
+		Signals.connect(this, "remove", cast(GCallback)&gtkd_container_remove, null);
+	}
+
+	Widget[] children;
+
+	static extern(C) void gtkd_container_add(GtkContainer* c, GtkWidget* w)
+	{
+		Container container = ObjectG.getDObject!(Container)(c);
+		Widget widget = ObjectG.getDObject!(Widget)(w);
+
+		container.children ~= widget;
+		widget.removeGcRoot();
+	}
+
+	static extern(C) void gtkd_container_remove(GtkContainer* c, GtkWidget* w)
+	{
+		import gobject.c.functions : g_object_get_data;
+
+		if ( auto container = cast(Container)g_object_get_data(cast(GObject*)c, "GObject") )
+			if ( auto widget = cast(Widget)g_object_get_data(cast(GObject*)w, "GObject") )
+		{
+			import std.algorithm : remove;
+			container.children.remove!(a => a is widget)();
+		}
 	}
 
 	/**

src/APILookupGtk.txt

@@ -1015,6 +1015,41 @@ code: end
 
 struct: Container
 code: start
+	/**
+	 * Sets our main struct and passes it to the parent class.
+	 */
+	public this (GtkContainer* gtkContainer, bool ownedRef = false)
+	{
+		this.gtkContainer = gtkContainer;
+		super(cast(GtkWidget*)gtkContainer, ownedRef);
+
+		Signals.connect(this, "add", cast(GCallback)&gtkd_container_add, null);
+		Signals.connect(this, "remove", cast(GCallback)&gtkd_container_remove, null);
+	}
+
+	Widget[] children;
+
+	static extern(C) void gtkd_container_add(GtkContainer* c, GtkWidget* w)
+	{
+		Container container = ObjectG.getDObject!(Container)(c);
+		Widget widget = ObjectG.getDObject!(Widget)(w);
+
+		container.children ~= widget;
+		widget.removeGcRoot();
+	}
+
+	static extern(C) void gtkd_container_remove(GtkContainer* c, GtkWidget* w)
+	{
+		import gobject.c.functions : g_object_get_data;
+
+		if ( auto container = cast(Container)g_object_get_data(cast(GObject*)c, "GObject") )
+		if ( auto widget = cast(Widget)g_object_get_data(cast(GObject*)w, "GObject") )
+		{
+			import std.algorithm : remove;
+			container.children.remove!(a => a is widget)();
+		}
+	}
+
 	/**
 	 * Removes all widgets from the container
 	 */

wrap @ f65e45fd

-Subproject commit 265f5da9ab537fb240db81230adfa89869d07ccd
+Subproject commit f65e45fd38be3e20b21524c1d43657493e502e78