PyQt5 文本输入框自动补全文本输入框自动补全QLineEdit的实现示例的实现示例
主要介绍了PyQt5 文本输入框自动补全QLineEdit的实现示例，文中通过示例代码介绍的非常详细，对大家的学习或者工作
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一、一、QCompleter类类
自动补全会用到的一个类
主要代码
def init_lineedit(self):
# 增加自动补全
self.completer = QCompleter(items_list)
# 设置匹配模式 有三种： Qt.MatchStartsWith 开头匹配（默认） Qt.MatchContains 内容匹配 Qt.MatchEndsWith 结尾匹配
self.completer.setFilterMode(Qt.MatchContains)
# 设置补全模式 有三种： QCompleter.PopupCompletion（默认） QCompleter.InlineCompletion QCompleter.UnfilteredPopupCompletion
self.completer.setCompletionMode(QCompleter.PopupCompletion)
# 给lineedit设置补全器
self.lineedit.setCompleter(self.completer)
def init_combobox(self):
# 增加选项元素
for i in range(len(items_list)):
self.combobox.addItem(items_list[i])
self.combobox.setCurrentIndex(-1)
# 增加自动补全
self.completer = QCompleter(items_list)
self.completer.setFilterMode(Qt.MatchContains)
self.completer.setCompletionMode(QCompleter.PopupCompletion)
self.combobox.setCompleter(self.completer)
完整代码：
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
################################################
items_list=["C","C++","Java","Python","JavaScript","C#","Swift","go","Ruby","Lua","PHP"]
################################################
class Widget(QWidget):
def __init__(self, *args, **kwargs):
super(Widget, self).__init__(*args, **kwargs)
layout = QHBoxLayout(self)
self.lineedit = QLineEdit(self, minimumWidth=200)
self.combobox = QComboBox(self, minimumWidth=200)
self.combobox.setEditable(True)
layout.addWidget(QLabel("QLineEdit", self))
layout.addWidget(self.lineedit)
layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
layout.addWidget(QLabel("QComboBox", self))
layout.addWidget(self.combobox)
#初始化combobox
self.init_lineedit()
self.init_combobox()
#增加选中事件
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