[Qt-interest] how to make such a completer

[yunqiu liu]

Hi Wenjie:

  You could try like the following:
1, Sub-class QLineEdit like scLineEdit,
2, in the scLineEdit definition, 
   1> create an object QComplete like ObjComplete;
   2> create an object QStandardItemModel like objItemMode;
   3> objComplete->setModel(objItemMode);
   4> objComplete->setCompletionMod(QCompleter::PopupCompletion);
   5> adjust the objComplete's font,something else;
   6> setCompleter(objComplete);
   7> adjust the background color of "this" if you like.


Somewhere, new an object of scLineEdit like objscLineEdit;
connect(objscLineEdit,SIGNAL(textEdit(const QString &)), 
this,SLOT(haha_slot(const QString &)));
QList<QString> ls; //get from some place.

void the_this::haha_slot(const QString &text){
if (text.isEmpty() || text.length()<2 ) return;

csLineEdit sc=qobject_cast<scLineEdit *>(sender());
QStandardItemModel *model=sc->get_cleared_itemMode();
QStandardItem *invis=model->invisibleRootItem();
for(int i=0,sz=ls.size();i<sz;++i){
QString t = ls.at(i)+"\n";
int len=t.length();
if (len<=20 && len>0) {
QStandardItem *item=new QStandartItem;
item->setText(t);
invis->appendRow(item);
}
}
}

Just my 2 cents,
YQ



________________________________
From: wenjie sha <wenjiesha.victor at gmail.com>
To: qt-interest at qt.nokia.com
Sent: Tue, January 4, 2011 3:58:00 PM
Subject: [Qt-interest] how to make such a completer

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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