Lua與C++的故事

寫在前面:
下面的這段代碼可以直接在LuaForWindows的Scite中運(yùn)行,這個(gè)函數(shù)的是仿照LuaForWindows自帶教程中的那個(gè)創(chuàng)建iup菜單的函數(shù)寫的,改進(jìn)的一個(gè)地方是可以用一個(gè)消息處理回調(diào)函數(shù)來響應(yīng)多個(gè)菜單項(xiàng),然后再統(tǒng)一dispatch,個(gè)人認(rèn)為寫法上比直接把進(jìn)行實(shí)際處理的函數(shù)寫在菜單定義表前面美觀一些,
說來慚愧,就改寫的這個(gè)小函數(shù),也是調(diào)試了一大會(huì)才弄好的,剛接觸Lua的時(shí)候,就是不熟練啊...(廢話? !)


  require 'cdlua'
  require 'iuplua'
  require 'iupluacd'

  function event_handler_g (self)
      iup.Message(self.title,'dispatch message')
  end

  function event_handler1 (self)
      iup.Message(self.title,'event 1 dispatch message')
  end
  function event_handler2 (self)
      iup.Message(self.title,'event 2 dispatch message')
  end
  function event_handler3 (self)
      iup.Message(self.title,'event 3 dispatch message')
  end

  my_menu_test =
  {
      nil,'M1',{event_handler_g,'M11','M12','M13',{event_handler3,'M21','M22',},},'M2',{event_handler_g,'M22','M23',},
  }

  function my_create_menu2(menu_define_table)

      local items={}

      for k,v in pairs(menu_define_table) do
          if type(v) == 'function' or type(v)=='nil' then
  --~             event_handler=v
              ___my_library__global__event_handler=v
          end

          if type(v) =='string' then
  --~             local item=iup.item{title=v,action=event_handler}
              local item=iup.item{title=v,action=___my_library__global__event_handler}
              table.insert(items,item)
          end

          if type(v) =='table' then
              m1_menu_title=table.remove(items)
              local item=iup.submenu {my_create_menu2(v),title=tostring(m1_menu_title.title)}
              table.insert(items,item)
          end
      end--end of for
      return iup.menu(items)
  end

  my_main_frame=iup.frame
      {
          iup.canvas
          {
              cursor='CROSS',
              scrollbar='VERTICAL',
              posy=0.0,
              ymax=0.8,
          }
      }

  dlg = iup.dialog
  {
      my_main_frame,
      size="HALFxHALF",
      title="finally I got the expected result",
      menu=my_create_menu2(my_menu_test),
  }

  dlg:showxy(iup.CENTER,iup.CENTER)

  if (not iup.MainLoopLevel or iup.MainLoopLevel()==0) then
    iup.MainLoop()
  end

后記,已經(jīng)發(fā)布在了我的粘貼里,不過它上面說是根據(jù)時(shí)間訪問來刪除舊帖子的,我怕時(shí)間久了這點(diǎn)記憶再?zèng)]有了