diff --git a/new/box.c b/new/box.c
index 67a5647a..ef77e8a4 100644
--- a/new/box.c
+++ b/new/box.c
@@ -9,7 +9,6 @@ typedef struct boxControl boxControl;
 struct box {
 	uiBox b;
 	void (*baseDestroy)(uiControl *);
-	void (*baseResize)(uiControl *, intmax_t, intmax_t, intmax_t, intmax_t, uiSizing *);
 	boxControl *controls;
 	uintmax_t len;
 	uintmax_t cap;
@@ -109,7 +108,7 @@ static void boxPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_
 		*width += nStretchy * maxStretchyWidth;
 }
 
-static void boxResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
+static void boxResizeChildren(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
 {
 	box *b = (box *) c;
 	int xpadding, ypadding;
@@ -118,8 +117,6 @@ static void boxResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intm
 	uintmax_t i;
 	intmax_t preferredWidth, preferredHeight;
 
-	(*(b->baseResize))(c, x, y, width, height, d);
-
 	if (b->len == 0)
 		return;
 
@@ -249,8 +246,8 @@ uiBox *uiNewHorizontalBox(void)
 	b->baseDestroy = uiControl(b)->Destroy;
 	uiControl(b)->Destroy = boxDestroy;
 	uiControl(b)->PreferredSize = boxPreferredSize;
-	b->baseResize = uiControl(b)->Resize;
-	uiControl(b)->Resize = boxResize;
+
+	uiContainer(b)->ResizeChildren = boxResizeChildren;
 
 	uiBox(b)->Append = boxAppend;
 	uiBox(b)->Delete = boxDelete;
diff --git a/new/ui.idl b/new/ui.idl
index 49723a2a..2ece34e7 100644
--- a/new/ui.idl
+++ b/new/ui.idl
@@ -61,6 +61,7 @@ interface Control {
 };
 
 interface Container from Control {
+	func ResizeChildren(x intmax_t, y intmax_t, width intmax_t, height intmax_t, d *Sizing);
 	func Update(voiid);
 };
 func MakeContainer(c *Container);