diff --git a/future b/future
index 3bb3e44..abd7d12 100644
--- a/future
+++ b/future
@@ -1,7 +1,13 @@
+mac os x sizing is now completely broken
+	- need to catch window initial sizes
+	- need to catch tab changes
+	- rect should be based on the alignment rect, not the frame rect
+
 new control stuff
 	Tab, Group
-		- should host Controls directly
-		- should have sharedWndProc()
+		- should host Controls directly?
+			- should have sharedWndProc()
+		- Tab needs Margined
 
 more flexible sizing determination
 	Tab needs a SetMargined(n), Margined(n)
diff --git a/newctrl/container_darwin.go b/newctrl/container_darwin.go
index 3e8c437..58b7777 100644
--- a/newctrl/container_darwin.go
+++ b/newctrl/container_darwin.go
@@ -17,7 +17,7 @@ type sizing struct {
 	sizingbase
 
 	// for size calculations
-	// nothing for mac
+	// nothing on Mac OS X
 
 	// for the actual resizing
 	neighborAlign C.struct_xalignment
diff --git a/newctrl/container_darwin.m b/newctrl/container_darwin.m
index c5a50e1..1dfa7cb 100644
--- a/newctrl/container_darwin.m
+++ b/newctrl/container_darwin.m
@@ -34,7 +34,14 @@ id newContainerView(void *gocontainer)
 
 void moveControl(id c, intptr_t x, intptr_t y, intptr_t width, intptr_t height)
 {
-	[toNSView(c) setFrame:NSMakeRect((CGFloat) x, (CGFloat) y, (CGFloat) width, (CGFloat) height)];
+	NSView *v;
+	NSRect frame;
+
+	frame = NSMakeRect((CGFloat) x, (CGFloat) y, (CGFloat) width, (CGFloat) height);
+	// mac os x coordinate system has (0,0) in the lower-left
+	v = toNSView(c);
+	frame.origin.y = ([[v superview] bounds].size.height - frame.size.height) - frame.origin.y;
+	[v setFrame:frame];
 }
 
 struct xrect containerBounds(id view)
diff --git a/newctrl/window_darwin.go b/newctrl/window_darwin.go
index 4758ac5..e0804be 100644
--- a/newctrl/window_darwin.go
+++ b/newctrl/window_darwin.go
@@ -34,6 +34,7 @@ func newWindow(title string, width int, height int, control Control) *window {
 	C.windowSetDelegate(w.id, unsafe.Pointer(w))
 	C.windowSetContentView(w.id, w.container.id)
 	w.child.setParent(w.container.parent())
+	// trigger an initial resize
 	return w
 }
 
@@ -49,6 +50,9 @@ func (w *window) SetTitle(title string) {
 
 func (w *window) Show() {
 	C.windowShow(w.id)
+	// trigger an initial resize
+	// TODO fine-tune this
+	windowResized(unsafe.Pointer(w))
 }
 
 func (w *window) Hide() {