Kinda sorta maybe implemented AreaHandler.Defocus() on Mac OS X. Starting to think I should just not allow Areas to be focused out.

redo/area_darwin.go

@@ -189,6 +189,12 @@ func areaView_flagsChanged(self C.id, e C.id, data unsafe.Pointer) {
 	sendKeyEvent(self, ke, data)
 }
 
+//export areaView_defocuses
+func areaView_defocuses(data unsafe.Pointer) C.BOOL {
+	a := (*area)(data)
+	return toBOOL(a.handler.Defocuses())
+}
+
 func (a *area) id() C.id {
 	return a._id
 }

redo/area_darwin.m

@@ -93,6 +93,12 @@ event(keyDown, areaView_keyDown)
 event(keyUp, areaView_keyUp)
 event(flagsChanged, areaView_flagsChanged)
 
+- (BOOL)resignFirstResponder
+{
+	// TODO the custom NSApplication sendEvent: means this will never happen
+	return areaView_defocuses(self->goarea);
+}
+
 @end
 
 Class getAreaClass(void)

redo/zz_test.go

@@ -142,6 +142,7 @@ func (tw *testwin) make(done chan struct{}) {
 			NewVerticalStack(
 				NewButton("Small"),
 				NewButton("Small"),
+				NewTextField(),
 				NewArea(200, 200, &areaHandler{*defocuses})))
 		tw.wsmall.Show()
 	}