Added support for the help menu. Application.gethelpmenu() will return

it.

Also fixed menu IDs to be signed in do_menudispatch. this is an incompatible
change, but I don't think it'll hurt anyone.

Mac/Lib/FrameWork.py

@@ -13,6 +13,7 @@ from Carbon.Dlg import *
 from Carbon.Dialogs import *
 from Carbon.Evt import *
 from Carbon.Events import *
+from Carbon.Help import *
 from Carbon.Menu import *
 from Carbon.Menus import *
 from Carbon.Qd import *
@@ -111,6 +112,7 @@ class Application:
 			self.menubar = None
 		else:
 			self.makemenubar()
+		self._helpmenu = None
 			
 	def __del__(self):
 		if self._doing_asyncevents:
@@ -126,6 +128,11 @@ class Application:
 		self.filemenu = m = Menu(self.menubar, "File")
 		self._quititem = MenuItem(m, "Quit", "Q", self._quit)
 		
+	def gethelpmenu(self):
+		if self._helpmenu == None:
+			self._helpmenu = HelpMenu(self.menubar)
+		return self._helpmenu
+	
 	def _quit(self, *args):
 		self.quitting = 1
 		
@@ -297,6 +304,8 @@ class Application:
 		(what, message, when, where, modifiers) = event
 		result = MenuSelect(where)
 		id = (result>>16) & 0xffff	# Hi word
+		if id >= 0x8000:
+			id = -65536 + id
 		item = result & 0xffff		# Lo word
 		self.do_rawmenu(id, item, window, event)
 	
@@ -716,6 +725,18 @@ class AppleMenu(Menu):
 			name = self.menu.GetMenuItemText(item)
 			OpenDeskAcc(name)
 			
+class HelpMenu(Menu):
+	def __init__(self, bar):
+		# Note we don't call Menu.__init__, we do the necessary things by hand
+		self.bar = bar
+		self.menu, index = HMGetHelpMenu()
+		self.id = self.menu.GetMenuID()
+		bar.menus[self.id] = self
+		# The next line caters for the entries the system already handles for us
+		self.items = [None]*(index-1)
+		self._parent = None
+		
+
 class Window:
 	"""A single window belonging to an application"""
 	
@@ -1066,6 +1087,9 @@ class TestApp(Application):
 		self.opt2 = CheckItem(mm, "Being hit on the head lessons", (kMenuOptionModifier, "A"))
 		self.opt3 = CheckItem(mm, "Complaints", (kMenuOptionModifier|kMenuNoCommandModifier, "A"))
 		Separator(m)
+		self.itemeh = MenuItem(m, "Enable Help", None, self.enablehelp)
+		self.itemdbg = MenuItem(m, "Debug", None, self.debug)
+		Separator(m)
 		self.quititem = MenuItem(m, "Quit", "Q", self.quit)
 	
 	def save(self, *args):
@@ -1074,6 +1098,17 @@ class TestApp(Application):
 	def quit(self, *args):
 		raise self
 		
+	def enablehelp(self, *args):
+		hm = self.gethelpmenu()
+		self.nohelpitem = MenuItem(hm, "There isn't any", None, self.nohelp)
+		
+	def nohelp(self, *args):
+		print "I told you there isn't any!"
+		
+	def debug(self, *args):
+		import pdb
+		pdb.set_trace()
+
 
 def test():
 	"Test program"