i use the Opus9 with no listerMenu like the pic
but the Search dialog can't open with hotkey(CTRL+F) if i hide the listerMenu.
i tested it in windows XP and 2008 Unfortunately, so are.
You have to set it as a system wide hotkey:
(And the function should be Find (not Prefs Customize, as in my screenshot, of course) 
)
I don't think you need to make it a System-wide Hotkey. You'd only need to do that if you wanted Ctrl-F to work outside of Opus (which you definitely don't as it would take over Ctrl-F in your text editor, for example).
The problem is caused by closing the lister menu. The Ctrl-F hotkey is tied to the Find item in the menu. If you close the menu but still want the hotkey then you should create a standalone, but not system-wide, hotkey for the command.
that explains a problem i was having a while back. interesting. is there a good reason menu hotkeys aren't added to the normal hotkey list?
Menu hotkeys are added to the hotkey list. Open it up and you'll see the Type column tells you whether each hotkey is standalone (Type = Hotkey) or from a menu/toolbar (Type = Toolbar).
If you close a toolbar then its hotkeys are closed as well. (If that didn't happen then you'd have active hotkeys from every sample or alternative toolbar in your config folder. That wouldn't be good, especially if you're using custom toolbars which have duplicate/alternative versions of the default toolbars. You'd end up with both sets of hotkeys in conflict.)
The alternative would be to force you to define everything twice if you wanted something on both the toolbar/menu and a hotkey. You'd then also have to edit things in two places if you wanted to consistently change what they both did. Since very few people close all the menus and toolbars it makes sense to let menu and toolbar items specify hotkeys.
Never noticed this! 
Learned something new again from 'Leo DOpedia'. 