pyqt5的QCompleter自动补全 使用模板

Posted 2021-02-20 nickshen

使用QCompleter类，就可以实现自动补全功能，效果图如下：

对应的代码很简单

1.  
   def init_lineedit(self):
2.  
   # 增加自动补全
3.  
   self.completer = QCompleter(items_list)
4.  
   # 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
5.  
   self.completer.setFilterMode(Qt.MatchContains)
6.  
   # 设置补全模式 有三种： QCompleter.PopupCompletion（默认） QCompleter.InlineCompletion QCompleter.UnfilteredPopupCompletion
7.  
   self.completer.setCompletionMode(QCompleter.PopupCompletion)
8.  
   # 给lineedit设置补全器
9.  
   self.lineedit.setCompleter(self.completer)
10.  
     
11.  
     
12.  
    def init_combobox(self):
13.  
    # 增加选项元素
14.  
    for i in range(len(items_list)):
15.  
    self.combobox.addItem(items_list[i])
16.  
    self.combobox.setCurrentIndex(-1)
17.  
     
18.  
    # 增加自动补全
19.  
    self.completer = QCompleter(items_list)
20.  
    self.completer.setFilterMode(Qt.MatchContains)
21.  
    self.completer.setCompletionMode(QCompleter.PopupCompletion)
22.  
    self.combobox.setCompleter(self.completer)

【如下代码，完全复制，直接运行，即可使用】

1.  
   import sys
2.  
   from PyQt5.QtWidgets import *
3.  
   from PyQt5.QtGui import *
4.  
   from PyQt5.QtCore import *
5.  
   ################################################
6.  
    
7.  
   items_list=["C","C++","Java","Python","javascript","C#","Swift","go","Ruby","Lua","php"]
8.  
    
9.  
   ################################################
10.  
    class Widget(QWidget):
11.  
    def __init__(self, *args, **kwargs):
12.  
    super(Widget, self).__init__(*args, **kwargs)
13.  
    layout = QHBoxLayout(self)
14.  
    self.lineedit = QLineEdit(self, minimumWidth=200)
15.  
    self.combobox = QComboBox(self, minimumWidth=200)
16.  
    self.combobox.setEditable(True)
17.  
     
18.  
     
19.  
    layout.addWidget(QLabel("QLineEdit", self))
20.  
    layout.addWidget(self.lineedit)
21.  
    layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
22.  
     
23.  
    layout.addWidget(QLabel("QComboBox", self))
24.  
    layout.addWidget(self.combobox)
25.  
     
26.  
     
27.  
    #初始化combobox
28.  
    self.init_lineedit()
29.  
    self.init_combobox()
30.  
     
31.  
     
32.  
    #增加选中事件
33.  
    self.combobox.activated.connect(self.on_combobox_Activate)
34.  
     
35.  
     
36.  
     
37.  
    def init_lineedit(self):
38.  
    # 增加自动补全
39.  
    self.completer = QCompleter(items_list)
40.  
    # 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
41.  
    self.completer.setFilterMode(Qt.MatchContains)
42.  
    # 设置补全模式 有三种： QCompleter.PopupCompletion（默认） QCompleter.InlineCompletion QCompleter.UnfilteredPopupCompletion
43.  
    self.completer.setCompletionMode(QCompleter.PopupCompletion)
44.  
    # 给lineedit设置补全器
45.  
    self.lineedit.setCompleter(self.completer)
46.  
     
47.  
     
48.  
     
49.  
    def init_combobox(self):
50.  
    # 增加选项元素
51.  
    for i in range(len(items_list)):
52.  
    self.combobox.addItem(items_list[i])
53.  
    self.combobox.setCurrentIndex(-1)
54.  
     
55.  
    # 增加自动补全
56.  
    self.completer = QCompleter(items_list)
57.  
    self.completer.setFilterMode(Qt.MatchContains)
58.  
    self.completer.setCompletionMode(QCompleter.PopupCompletion)
59.  
    self.combobox.setCompleter(self.completer)
60.  
     
61.  
     
62.  
    def on_combobox_Activate(self, index):
63.  
    print(self.combobox.count())
64.  
    print(self.combobox.currentIndex())
65.  
    print(self.combobox.currentText())
66.  
    print(self.combobox.currentData())
67.  
    print(self.combobox.itemData(self.combobox.currentIndex()))
68.  
    print(self.combobox.itemText(self.combobox.currentIndex()))
69.  
    print(self.combobox.itemText(index))
70.  
     
71.  
     
72.  
     
73.  
     
74.  
     
75.  
     
76.  
    if __name__ == "__main__":
77.  
    app = QApplication(sys.argv)
78.  
    w = Widget()
79.  
    w.show()
80.  
    sys.exit(app.exec_())