Fixed incorrect redrawing of Mac OS X windows after resize. Still need to fix the wrong rect issues...

delegate_darwin.go

@@ -78,6 +78,7 @@ func appDelegate_windowShouldClose(self C.id, sel C.SEL, win C.id) C.BOOL {
 
 var (
 	_object = sel_getUid("object")
+	_display = sel_getUid("display")
 )
 
 //export appDelegate_windowDidResize
@@ -91,6 +92,7 @@ func appDelegate_windowDidResize(self C.id, sel C.SEL, notification C.id) {
 			panic("child resize failed: " + err.Error())
 		}
 	}
+	C.objc_msgSend_noargs(win, _display)		// redraw everything; TODO only if resize() was called?
 }
 
 //export appDelegate_buttonClicked

todo.md

@@ -27,7 +27,6 @@ important things:
 - because the main event loop is not called if initialization fails, it is presently impossible for MsgBoxError() to work if UI initialization fails; this basically means we cannot allow initializiation to fail on Mac OS X if we want to be able to report UI init failures to the user with one
 - Cocoa coordinates have (0,0) at the bottom left: need to fix this somehow
 - I think Cocoa NSButton text is not vertically aligned properly...?
-- resizing Cocoa windows does not redraw controls correctly
 - NSComboBox scans the entered text to see if it matches one of the items and returns the index of that item if it does; find out how to suppress this so that it returns -1 unless the item was chosen from the list (like the other platforms)
 - figure out what to do about deleting a nonexistent item; each backend responds differently by default
 - there's no GTK+ error handling whatsoever; we need to figure out how it works