技術標籤：axure實現複選框全選

本篇的例子實現了一個帶全選功能的複選框：

#自定義控制元件--實現了一個帶全選功能的複選框import sysfrom PyQt5.QtWidgets import QApplication, QListWidget, QCheckBox,QListWidgetItemfrom PyQt5.QtCore import Qtclass FilteredList(QListWidget):#繼承自列表控制元件    def __init__(self, textList, parent=None):        super().__init__(parent)        self.selectAll_ch = QCheckBox("全選(selectAll)")        self.selectAll_ch.setCheckState(Qt.Checked)        self.selectAll_ch.stateChanged[int].connect(self.on_selectAll)#        item = QListWidgetItem(self)self.setItemWidget(item,self.selectAll_ch)#列表控制元件的項設為 QCheckBox        self.dict = dict()        self.boxes = set()        for index, text in enumerate(textList):            ch = QCheckBox(text)            ch.setCheckState(Qt.Unchecked)            ch.stateChanged[int].connect(self.on_stateChanged)            #item.setCheckState(Qt.Unchecked)#            item = QListWidgetItem(self)            self.setItemWidget(item, ch)            self.boxes.add(ch)            self.dict[index] = ch                def on_selectAll(self,state):        if state == 2:            for ch in self.boxes:                ch.setCheckState(2)        if state == 0:            for ch in self.boxes:                ch.setCheckState(0)                            def on_stateChanged(self,state):        ch = self.sender()        if state:            if len([ch for ch in self.boxes if ch.checkState()]) == self.count()-1:        #0 不選中， 1 部分選中，2 全選中 #Qt.Unchecked #Qt.PartiallyChecked #Qt.Checked                self.selectAll_ch.setCheckState(2)            else:                self.selectAll_ch.setCheckState(1)        else:            if len([k for k in self.boxes if k.checkState()]):                self.selectAll_ch.setCheckState(1)            else:                self.selectAll_ch.setCheckState(0)                    def keyPressEvent(self, event):        #Ctrl+A 全選        if event.modifiers() & Qt.ControlModifier and event.key()==Qt.Key_A:            self.selectAll_ch.setCheckState(2)if __name__ == '__main__':    app = QApplication(sys.argv)    myList = FilteredList(textList=["a","b","c","d"])    myList.show()sys.exit(app.exec_())