Question

我是pyqt的新手，我正在尝试创建一个可以被其他函数调用的选择器listwidgets，传入项目以供用户选择并从用户从函数中选择的值中获取值。

这就是我要做的事情：

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

        QtGui.QWidget.__init__(self)
        self.setWindowFlags(QtCore.Qt.Dialog)
        self.setupUi(self)

        someItems = ['itemA', 'itemB', 'itemSomething']
        for item in someItems:
            list = QtGui.QListWidgetItem(item)
            self.listWidget.addItem(list)    
        #self.show()

    def setupUi(self, Form):
        Form.setWindowTitle('To which item?')
        self.verticalLayoutWidget = QtGui.QWidget(Form)
        self.verticalLayoutWidget.setGeometry(QtCore.QRect(0, 0, 500, 150))
        self.verticalLayout = QtGui.QVBoxLayout(self.verticalLayoutWidget)
        self.listWidget = QtGui.QListWidget(self.verticalLayoutWidget)
        self.verticalLayout.addWidget(self.listWidget)

        self.okButton = QtGui.QPushButton("OK")
        self.cancelButton = QtGui.QPushButton("Cancel")

        self.hbox = QtGui.QHBoxLayout(self.verticalLayoutWidget)
        self.hbox.addStretch(1)
        self.hbox.addWidget(self.okButton)
        self.hbox.addWidget(self.cancelButton)

        self.verticalLayout.addLayout(self.hbox)
        QtCore.QMetaObject.connectSlotsByName(Form)

        self.cancelButton.clicked.connect(lambda: self.close())
        self.okButton.clicked.connect(lambda: self.pick(self))  

    def pick(self, Form):
        for item in self.listWidget.selectedItems():
            picked = str(item.text())
        print picked



def whichItem():
    selector = SelectorDialog(parent)

    #find out picked item by SelecteorDialog, how ?

Answer 1

首先，如果您的对象是对话框，则最好从QDialog继承，而不是QWidget。这允许使用QDialog的accept()和reject()方法。

警告，我现在无法测试下面的内容，但它基于我编写的代码。

所以在setupUi我做了以下更改：

self.cancelButton.clicked.connect(self.reject) # Clicked cancel
self.okButton.clicked.connect(self.accept)  #Clicked accept

然后，当您调用对话框时，您可以检查用户是否实际“接受”了对话框或取消了对话框：

def whichItem():
    selector = SelectorDialog(parent)
    if selector.exec_() == QtGui.QDialog.Accepted:
        picks = selector.getPicks()

然后在类定义中进行以下更改：

Class SelectorDialog(QtGui.QDialog):
    ...
    def getPicks(self):
        picked = []
        for item in self.listWidget.selectedItems():
            picked.append(str(item.text()))
        return picked

Python pyqt - 如何从自定义对话框类中获取函数中的值

1 个答案: