diff --git a/redo/controls_darwin.go b/redo/controls_darwin.go
index 9fef658..8d13aaa 100644
--- a/redo/controls_darwin.go
+++ b/redo/controls_darwin.go
@@ -93,10 +93,10 @@ func newCheckbox(text string) *checkbox {
 // we don't need to define our own event here; we can just reuse Button's
 // (it's all target-action anyway)
 
-type (c *checkbox) Checked() bool {
+func (c *checkbox) Checked() bool {
 	return fromBOOL(C.checkboxChecked(c.id))
 }
 
-type (c *checkbox) SetChecked(checked bool) {
+func (c *checkbox) SetChecked(checked bool) {
 	C.checkboxSetChecked(c.id, toBOOL(checked))
 }
diff --git a/redo/objc_darwin.h b/redo/objc_darwin.h
index ec0abf0..e69ed71 100644
--- a/redo/objc_darwin.h
+++ b/redo/objc_darwin.h
@@ -28,6 +28,7 @@ extern void windowSetTitle(id, const char *);
 extern void windowShow(id);
 extern void windowHide(id);
 extern void windowClose(id);
+extern void windowRedraw(id);
 
 /* controls_darwin.m */
 extern void unparent(id);
diff --git a/redo/window_darwin.m b/redo/window_darwin.m
index 18dee84..20e26e4 100644
--- a/redo/window_darwin.m
+++ b/redo/window_darwin.m
@@ -87,4 +87,5 @@ void windowRedraw(id win)
 
 	d = [toNSWindow(win) delegate];
 	[d doWindowResize:win];
-}
\ No newline at end of file
+	// TODO new control sizes don't take effect properly, even with [toNSWindow(win) display];
+}