[Iup-users] iup.webbrowser Lua

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Hi everyone,

I have a question for "iup.webbrowser":
This is a simple web browser with "iup.webbrowser", it can show a link "Hello Lua" and click the link can goto "http://www.lua.org". Now, I wish abort the navigation.

IUP Guide give a Callbacks function:
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NAVIGATE_CB: action generated when the browser requests a navigation to another page. It is called before navigation occurs. Can be called multiple times when a frame set loads its frames, or when a page loads also other pages.
Returns: IUP_IGNORE will abort navigation (since 3.4).
-----------------------------------------------------------------------
This is my code (WINXP, lua for windows 5.1.4-46 and IUP 3.5), "NAVIGATE_CB" can catch the navigation's requests but can not abort it. what is wrong?
-----------------------------------------------------------------------
require('iuplua')
require('iupluaweb')

local MyWeb = iup.webbrowser{}

function MyWeb:navigate_cb(url)
      iup.Message('', url)
      return IUP_IGNORE
end

MyWeb.HTML = [[
<HTML>
<BODY>
<A HREF="http://www.lua.org">Hello Lua</A>
</BODY>
</HTML>
]]

local MainForm = iup.dialog{
      title = 'HELLO',
      size = 'HALFxHALF',
      MyWeb,
    }

MainForm:show()
iup.MainLoop()
-----------------------------------------------------------------------

Thank you very much.
Best Regards

Sunus Yang