How to get the menu item and control the menu(BCGPToolBar)?(poor english..)

sorry my english is poor but i need some help about au3

i am develop a automatic test tool on a pdf reader software

i want to get the menu item title and use item name to click the menu item (just like click “File"> click "Open")

i find it so hard to use "controlgettext" or "wingettext" to get the item name !

the menu ctrl info is :(use window info tool)
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class:BCGPToolBar:1300000:8:10003:10
interface:15
classname:BCGPToolBar:1300000:8:10003:1015
hi class:[CLASS:BCGPToolBar:1300000:8:10003:10; INSTANCE:15]
ID:59398
Text:Menu Bar
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can i use some winapi to get it done???

thank you very much!