[Qt-interest] how to make such a completer

[wenjie sha]

Dear forum:

I want to create such a completer:
1.when user input the first alphabet, it doesn't pop any options
2.when user start entering the second alphabet, the popup only contains
maximum 20 words.
3. I will have to be able to modify how the options are selected.
4. ....

Can someone tip me what changes I should make to what files?
And I still don't get how qcompleter and qlineedit communicate, also using
signal-slot mechanism?

Many thanks,
-- 
Wenjie Sha
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