如何在Qt中完成下拉单词建议?

编程基础网 C/C++问题

2021-01-01

How to accomplish drop down word suggestions in Qt?(如何在Qt中完成下拉单词建议?)

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问题描述

假设我在 QListWidget(隐藏)和 QLineEdit 中有 10 个名称.现在，如果我在编辑"行中键入字母a"，它应该在列表小部件中显示所有以字母A"开头的名称的下拉列表.用户可以使用鼠标或键盘进行选择(因为会有垂直滚动条).我不确定 QLineEdit 是否可以做到这一点.但我想知道有什么办法可以做到这一点.

Say I have 10 names in a QListWidget (which is hidden) and an a QLineEdit. Now if I type the letter "a" in the line Edit it should display a drop down of all those name in the list widget that begin with the letter "A". the user could select using a mouse or a keyboard (since there will be a vertical scroll-bar). I am not sure if a QLineEdit could do this. But I would like to know what is out there to accomplish this.

推荐答案

您可以使用 QCompleter，它提供了一种在 QLineEdit 和 QComboBox 等小部件中自动完成的方法.当用户开始输入单词时，QCompleter 根据单词列表建议可能的完成单词的方法.


You can use QCompleter which provides a way for autocompletion in widgets like QLineEdit and QComboBox. When the user starts typing a word, QCompleter suggests possible ways of completing the word, based on a word list.
Qt 文档中的示例::>
QStringList wordList;
wordList << "alpha" << "omega" << "omicron" << "zeta";

QLineEdit *lineEdit = new QLineEdit(this);

QCompleter *completer = new QCompleter(wordList, this);
completer->setCaseSensitivity(Qt::CaseInsensitive);
lineEdit->setCompleter(completer);


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