diff --git a/new/container_unix.c b/new/container_unix.c
index d9d6996..d393273 100644
--- a/new/container_unix.c
+++ b/new/container_unix.c
@@ -55,14 +55,29 @@ static void uiContainer_remove(GtkContainer *container, GtkWidget *widget)
 		g_ptr_array_remove(c->children, widget);
 }
 
+#define gtkXMargin 12
+#define gtkYMargin 12
+
 static void uiContainer_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
 {
 	uiContainer *c = uiContainer(widget);
 	uiSizing d;
+	intmax_t x, y, width, height;
 
 	gtk_widget_set_allocation(GTK_WIDGET(c), allocation);
-	if (c->child != NULL)
-		(*(c->child->resize))(c->child, allocation->x, allocation->y, allocation->width, allocation->height, &d);
+	if (c->child == NULL)
+		return;
+	x = allocation->x;
+	y = allocation->y;
+	width = allocation->width;
+	height = allocation->height;
+	if (c->margined) {
+		x += gtkXMargin;
+		y += gtkYMargin;
+		width -= 2 * gtkXMargin;
+		height -= 2 * gtkYMargin;
+	}
+	(*(c->child->resize))(c->child, x, y, width, height, &d);
 }
 
 struct forall {
diff --git a/new/uipriv_unix.h b/new/uipriv_unix.h
index 1ee2269..3187c45 100644
--- a/new/uipriv_unix.h
+++ b/new/uipriv_unix.h
@@ -26,6 +26,7 @@ struct uiContainer {
 	uiControl *child;
 	// these are the actual children widgets of the container as far as GTK+ is concerned
 	GPtrArray *children;		// for forall()
+	gboolean margined;
 };
 struct uiContainerClass {
 	GtkContainerClass parent_class;
diff --git a/new/window_unix.c b/new/window_unix.c
index dca52e3..b778b26 100644
--- a/new/window_unix.c
+++ b/new/window_unix.c
@@ -81,3 +81,11 @@ void uiWindowSetChild(uiWindow *w, uiControl *c)
 	uiContainer(w->container)->child = c;
 	(*(c->setParent))(c, (uintptr_t) (w->container));
 }
+
+// TODO margined
+
+void uiWindowSetMargined(uiWindow *w, int margined)
+{
+	uiContainer(w->container)->margined = margined;
+	updateParent((uintptr_t) (w->container));
+}