Python 如何显示 PyQt 模态对话框并在其关闭后从其控件中获取数据？
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How can I show a PyQt modal dialog and get data out of its controls once its closed?
提问by Thomas Johnson
For a built-in dialog like QInputDialog, I've read that I can do this:
对于像 QInputDialog 这样的内置对话框，我读到我可以这样做：
text, ok = QtGui.QInputDialog.getText(self, 'Input Dialog', 'Enter your name:')
How can I emulate this behavior using a dialog that I design myself in Qt Designer? For instance, I would like to do:
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)
采纳答案by hluk
Here is simple class you can use to prompt for date:
这是您可以用来提示日期的简单类：
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)
and to use it:
并使用它：
date, time, ok = DateDialog.getDateTime()
回答by lou
I tried to edit the answer of hlukwith the changes below but it got rejected, not sure why because it got some clear bugs as far is I can see.
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。
bugfix 1: removed self.from self.layout.addWidget(self.buttons)
错误修正 1：删除自我。来自self.layout.addWidget(self.buttons)
bugfix 2: connected OK and Cancel buttons to its correct actions
错误修正 2：将确定和取消按钮连接到正确的操作
enhancement: made the code ready to run by including the imports and improved the run example
增强功能：通过包含导入和改进运行示例使代码准备好运行
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)
and to use it:
并使用它：
app = QApplication([])
date, time, ok = DateDialog.getDateTime()
print("{} {} {}".format(date, time, ok))
app.exec_()
