diff --git a/separator.go b/separator.go
new file mode 100644
index 0000000..5f41891
--- /dev/null
+++ b/separator.go
@@ -0,0 +1,68 @@
+// 12 december 2015
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "ui.h"
+import "C"
+
+// Separator is a Control that represents a horizontal line that
+// visually separates controls.
+type Separator struct {
+	c	*C.uiControl
+	s	*C.uiSeparator
+}
+
+// NewSeparator creates a new horizontal Separator.
+func NewHorizontalSeparator() *Separator {
+	s := new(Separator)
+
+	s.s = C.uiNewHorizontalSeparator()
+	s.c = (*C.uiControl)(unsafe.Pointer(s.s))
+
+	return s
+}
+
+// Destroy destroys the Separator.
+func (s *Separator) Destroy() {
+	C.uiControlDestroy(s.c)
+}
+
+// LibuiControl returns the libui uiControl pointer that backs
+// the Window. This is only used by package ui itself and should
+// not be called by programs.
+func (s *Separator) LibuiControl() uintptr {
+	return uintptr(unsafe.Pointer(s.c))
+}
+
+// Handle returns the OS-level handle associated with this Separator.
+// On Windows this is an HWND of a standard Windows API STATIC
+// class (as provided by Common Controls version 6).
+// On GTK+ this is a pointer to a GtkSeparator.
+// On OS X this is a pointer to a NSBox.
+func (s *Separator) Handle() uintptr {
+	return uintptr(C.uiControlHandle(s.c))
+}
+
+// Show shows the Separator.
+func (s *Separator) Show() {
+	C.uiControlShow(s.c)
+}
+
+// Hide hides the Separator.
+func (s *Separator) Hide() {
+	C.uiControlHide(s.c)
+}
+
+// Enable enables the Separator.
+func (s *Separator) Enable() {
+	C.uiControlEnable(s.c)
+}
+
+// Disable disables the Separator.
+func (s *Separator) Disable() {
+	C.uiControlDisable(s.c)
+}
diff --git a/zz_test.go b/zz_test.go
index 657f5dc..bc788d2 100644
--- a/zz_test.go
+++ b/zz_test.go
@@ -2,38 +2,18 @@
 
 package ui
 
-import "time"
 import "testing"
 
 func TestIt(t *testing.T) {
 	err := Main(func() {
 		w := NewWindow("Hello", 320, 240, false)
-		stop := make(chan struct{})
 		w.OnClosing(func(w *Window) bool {
-			stop <- struct{}{}
 			Quit()
 			return true
 		})
-		p := NewProgressBar()
-		w.SetChild(p)
-		go func() {
-			value := 0
-			ticker := time.NewTicker(time.Second / 2)
-			for {
-				select {
-				case <-ticker.C:
-					QueueMain(func() {
-						value++
-						if value > 100 {
-							value = 0
-						}
-						p.SetValue(value)
-					})
-				case <-stop:
-					return
-				}
-			}
-		}()
+		s := NewHorizontalSeparator()
+		w.SetChild(s)
+		w.SetMargined(true)
 		w.Show()
 	})
 	if err != nil {