Question

我试图自动填充独家复选框列表，其中根据中QComboBox选择的选项复选框改变的次数。

我卡在如何删除最初所附窗口小部件中的布局和与新部件替换它们的部分。

例如，如果选择菜单项-food，将显示3个复选框（“ good2eat”，“ macs”，“ popeyes”），如果选择了drinks，则这3个复选框将被删除，并用“水”，“茶”选项

替换

class MenuWindow(QtGui.QWidget):
    def __init__(self, dict_items, parent=None):
        super(MenuWindow, self).__init__(parent=parent)

        layout = QtGui.QVBoxLayout()
        self.checkbox_options = {}
        self.menu_tag_dict = defaultdict(set)

        self.menu_combos = QtGui.QComboBox()
        self.menu_combos.currentIndexChanged.connect(self.get_selections)
        self.chkbox_group = QtGui.QButtonGroup()

        for menu_name, submenu_name in dict_items.items():
            self.menu_combos.addItems([menu_name])

            if submenu_name:
                sub_txt = [m for m in submenu_name]
                for s in sub_txt:
                    sub_chk = QtGui.QCheckBox(s)
                    self.checkbox_options[menu_name] = sub_chk
                    self.chkbox_group.addButton(sub_chk)

        print_btn = QtGui.QPushButton('Print selected')

        layout.addWidget(self.menu_combos)
        for s in self.checkbox_options.values():
            layout.addWidget(s)

        layout.addWidget(get_sel_btn)
        layout.addStretch()

        self.setLayout(layout)
        self.show()

    def get_selections(self):
        # Get combobox text
        combo_text = self.menu_combos.currentText()
        # get the menus
        items = self.menu_combos.get(combo_text)



my_items = {
    'food' : ['good2eat', 'macs', 'popeyes'],
    'drinks': ['water', 'tea']
}

myWin = MenuWindow(my_items)
myWin.show()

即使是这样，在代码的开始，菜单项目下填充选项的数目food是已经错误。

有没有更好的办法，我可以处理这个问题？

Answer 1

尝试一下：

import sys
from PyQt5.QtGui     import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore    import *

class MenuWindow(QWidget):
    def __init__(self, dict_items, parent=None):
        super(MenuWindow, self).__init__(parent=parent)

        self.dict_items = dict_items

        self.menu_combos = QComboBox()
        self.menu_combos.currentIndexChanged[str].connect(self.get_selections)
        self.menu_combos.addItems(sorted(self.dict_items.keys()))

        print_btn = QPushButton('Print selected')        # ! Print selected
        print_btn.clicked.connect(self.printSelected)    # ! Print selected

        self.layoutV = QVBoxLayout()
        self.layoutV.addWidget(self.menu_combos)

        for s in self.dict_items[self.menu_combos.currentText()]:
            self.sub_chk = QCheckBox(s)
            self.layoutV.addWidget(self.sub_chk)    

        self.layoutV.addStretch()
        self.layoutV.addWidget(print_btn)                # ! Print selected

        self.setLayout(self.layoutV)
        self.show()

    @pyqtSlot(str)
    def get_selections(self, text):

        if self.layout():
            countLayout = self.layout().count()
            for it in range(countLayout - 3):             # <--- removeWidget
                w = self.layout().itemAt(1).widget()
                self.layout().removeWidget(w)     
                w.hide()

            for s in self.dict_items[text][::-1]:         # <--- insertWidge
                self.sub_chk = QCheckBox(s)
                self.layoutV.insertWidget(1, self.sub_chk) 

    def printSelected(self):                              # ! Print selected
        checked_list = []
        for i in range(1, self.layoutV.count() - 2):
            chBox = self.layoutV.itemAt(i).widget()
            if chBox.isChecked():
                checked_list.append(chBox.text())
        print("selected QCheckBox: " + str(list(checked_list)))  


my_items = {
    'food'  : ['good2eat', 'macs', 'popeyes'],
    'drinks': ['water',    'tea']
}

if __name__ == '__main__':
    import sys
    app  = QApplication(sys.argv)
    myWin = MenuWindow(my_items)
    myWin.setGeometry(300, 150, 250, 250)
    myWin.show()
    sys.exit(app.exec_())

根据QCombobox中选择的选项替换复选框

1 个答案: