Added a global Do function

object.go

@@ -155,6 +155,7 @@ type ContentBox interface {
 	ContentBounds         () image.Rectangle
 	ScrollTo              (image.Point)
 	OnContentBoundsChange (func ()) event.Cookie
+	SetAlign              (x, y Align)
 }
 
 // TextBox is a box that contains text content.
@@ -164,22 +165,22 @@ type TextBox interface {
 	SetText      (string)
 	SetTextColor (color.Color)
 	SetFace      (font.Face)
-	SetHAlign    (Align)
-	SetVAlign    (Align)
+	SetWrap      (bool)
 }
 
 // ContentBox is a box that can contain child objects. It arranges them
 // according to a layout rule.
 type ContainerBox interface {
 	ContentBox
-	SetGap    (image.Point)
-	Add       (Object)
-	Delete    (Object)
-	Insert    (child Object, before Object)
-	Clear     ()
-	Length    () int
-	At        (int) Object
-	SetLayout (Layout)
+	PropagateEvents (bool)
+	SetGap          (image.Point)
+	Add             (Object)
+	Delete          (Object)
+	Insert          (child Object, before Object)
+	Clear           ()
+	Length          () int
+	At              (int) Object
+	SetLayout       (Layout)
 }
 
 // LayoutHints are passed to a layout to tell it how to arrange child boxes.
@@ -187,6 +188,8 @@ type LayoutHints struct {
 	Bounds image.Rectangle
 	OverflowX bool
 	OverflowY bool
+	AlignX    Align
+	AlignY    Align
 	Gap image.Point
 }
 

tomo.go

@@ -35,6 +35,10 @@ func Stop () {
 	backend = nil
 }
 
+func Do (callback func ()) {
+	backend.Do(callback)
+}
+
 func NewWindow (bounds image.Rectangle) (MainWindow, error) {
 	assertBackend()
 	return backend.NewWindow(bounds)