Question

我尝试将spinbox的值和复选框的状态从第二个对话框发送到父对话框....但返回的值不是第二个对话框中的值这里是代码

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

__appname__ = 'Dialog app '

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

        self.btn = QPushButton('open dialog')
        self.label1 = QLabel('Label 1 Result')
        self.label2 = QLabel('Label 2 result')

        layout = QVBoxLayout()
        layout.addWidget(self.btn)
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)

        self.setLayout(layout)
        self.setWindowTitle(__appname__)


        self.btn.clicked.connect(self.dialogOpen)


    def dialogOpen(self):
        dialog = subDialog()

        self.sub = subDialog()

        self.check = str(self.sub.checkbox.isChecked())
        self.spin = str(self.sub.spinbox.value())


        if dialog.exec_():
            self.label1.setText('spinbox value is ' + self.spin)
            self.label2.setText('Checkbox is ' + self.check)


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

        self.setWindowTitle('Sub Dialog')

        self.checkbox = QCheckBox()
        self.spinbox = QSpinBox()
        self.buttonOK = QPushButton('Ok')
        self.buttonCancel = QPushButton('cancel')



        lay = QGridLayout()
        lay.addWidget(self.spinbox, 0, 0)
        lay.addWidget(self.checkbox, 0, 1,)
        lay.addWidget(self.buttonOK)
        lay.addWidget(self.buttonCancel)

        self.setLayout(lay)

        self.buttonOK.clicked.connect(self.accept)
        self.buttonCancel.clicked.connect(self.reject)

app = QApplication(sys.argv)
form = Dialog()
form.show()
app.exec_()

Answer 1

问题是您在打开Dialog之前读取了值。这只会给你初始值。打开对话框后放置读数，你会没事的。

SELECT 
  a.*
, b.status
FROM table a
JOIN (SELECT *, ROW_NUMBER() OVER (PARTITION BY id ORDER BY seq DESC) AS rn
  FROM dbo.Table) b ON a.id = b.id AND b.rn = 1

Answer 2

Map阻塞，因此您获得的数据是显示新窗口之前的数据，您必须获取关闭窗口的数据，即exec_()之后的数据：

exec_()

如何在python PyQt5中的Dialog之间发送数据

2 个答案: