how to implement code completion in qt
i am writing an ide using qt (on c++) and i need to add auto completion feature to it
so i want to know :
how to do that (i am using qtPlainTextEdit) ?
what the data structure i should use ?
I think you should take a look at this: http://qt-project.org/doc/qt-4.8/tools-customcompleter.html
I used this example to understand CodeCompletion and I think it is fine :)
 Qt has a own class for such purpose called QCompleter: http://qt-project.org/doc/qt-4.8/qcompleter.html
I also need to write a code completer in Qt and the first link Tobias provided is the document to look at. It is comprehensive and clear and worked for me. I am sure will work for you.
If you need a code completer in lineEdit, it's pretty simple (from the QCompleter documentation):
QStringList wordList; wordList << "one" << "two" << "three" << "four" << "five"; QLineEdit *lineEdit = new QLineEdit(this); QCompleter *completer = new QCompleter(wordList, this); lineEdit->setCompleter(completer);
However a QPlainTextEdit, or QTextEdit don't have a built-in setCompleter() member function so you must follow the custom code completer tutorial.
That's a big, complex feature. I'd look at how it's been done in the Qt Creator.