python - 如何显示 PyQt 模式对话框并在关闭后从其控件中获取数据？

Question

对于像 QInputDialog 这样的内置对话框，我读过我可以这样做：

text, ok = QtGui.QInputDialog.getText(self, 'Input Dialog', 'Enter your name:')

如何使用我在 Qt Designer 中自己设计的对话框来模拟这种行为？例如，我想做：

my_date, my_time, ok = MyCustomDateTimeDialog.get_date_time(self)

Answer 1

这是可用于提示日期的简单类：

class DateDialog(QDialog):
    def __init__(self, parent = None):
        super(DateDialog, self).__init__(parent)

        layout = QVBoxLayout(self)

        # nice widget for editing the date
        self.datetime = QDateTimeEdit(self)
        self.datetime.setCalendarPopup(True)
        self.datetime.setDateTime(QDateTime.currentDateTime())
        layout.addWidget(self.datetime)

        # OK and Cancel buttons
        buttons = QDialogButtonBox(
            QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
            Qt.Horizontal, self)
        buttons.accepted.connect(self.accept)
        buttons.rejected.connect(self.reject)
        layout.addWidget(buttons)

    # get current date and time from the dialog
    def dateTime(self):
        return self.datetime.dateTime()

    # static method to create the dialog and return (date, time, accepted)
    @staticmethod
    def getDateTime(parent = None):
        dialog = DateDialog(parent)
        result = dialog.exec_()
        date = dialog.dateTime()
        return (date.date(), date.time(), result == QDialog.Accepted)

并使用它：

date, time, ok = DateDialog.getDateTime()

Answer 2

我试图用下面的更改来编辑hluk的答案，但它被拒绝了，不知道为什么，因为据我所知，它有一些明显的错误。

错误修复 1：删除了自我。来自self.layout.addWidget(self.buttons)

错误修复 2：将 OK 和 Cancel 按钮连接到正确的操作

增强：通过包含导入使代码准备好运行并改进了运行示例

from PyQt4.QtGui import QDialog, QVBoxLayout, QDialogButtonBox, QDateTimeEdit, QApplication
from PyQt4.QtCore import Qt, QDateTime

class DateDialog(QDialog):
    def __init__(self, parent = None):
        super(DateDialog, self).__init__(parent)

        layout = QVBoxLayout(self)

        # nice widget for editing the date
        self.datetime = QDateTimeEdit(self)
        self.datetime.setCalendarPopup(True)
        self.datetime.setDateTime(QDateTime.currentDateTime())
        layout.addWidget(self.datetime)

        # OK and Cancel buttons
        self.buttons = QDialogButtonBox(
            QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
            Qt.Horizontal, self)
        layout.addWidget(self.buttons)

        self.buttons.accepted.connect(self.accept)
        self.buttons.rejected.connect(self.reject)

    # get current date and time from the dialog
    def dateTime(self):
        return self.datetime.dateTime()

    # static method to create the dialog and return (date, time, accepted)
    @staticmethod
    def getDateTime(parent = None):
        dialog = DateDialog(parent)
        result = dialog.exec_()
        date = dialog.dateTime()
        return (date.date(), date.time(), result == QDialog.Accepted)

并使用它：

app = QApplication([])
date, time, ok = DateDialog.getDateTime()
print("{} {} {}".format(date, time, ok))
app.exec_()