<p>一种可能的解决方案可能如下所示:</p>
<pre><code>from PyQt5.QtWidgets import *
class ModelessDialog(QDialog):
def __init__(self, part, threshold, parent=None):
super().__init__(parent)
self.setWindowTitle("Baseline")
self.setGeometry(800, 275, 300, 200)
self.part = part
self.threshold = threshold
self.threshNew = 4.4
label = QLabel("Part : {}\nThreshold : {}".format(
self.part, self.threshold))
self.label2 = QLabel("ThreshNew : {:,.2f}".format(self.threshNew))
self.spinBox = QDoubleSpinBox()
self.spinBox.setMinimum(-2.3)
self.spinBox.setMaximum(99)
self.spinBox.setValue(self.threshNew)
self.spinBox.setSingleStep(0.02)
self.spinBox.valueChanged.connect(self.valueChang)
buttonBox = QDialogButtonBox(
QDialogButtonBox.Ok
| QDialogButtonBox.Cancel
| QDialogButtonBox.Apply)
layout = QVBoxLayout()
layout.addWidget(label)
layout.addWidget(self.label2)
layout.addWidget(self.spinBox)
layout.addWidget(buttonBox)
self.resize(300, 200)
self.setLayout(layout)
okBtn = buttonBox.button(QDialogButtonBox.Ok)
okBtn.clicked.connect(self._okBtn)
cancelBtn = buttonBox.button(QDialogButtonBox.Cancel)
cancelBtn.clicked.connect(self.reject)
applyBtn = buttonBox.button(QDialogButtonBox.Apply) # +++
applyBtn.clicked.connect(self._apply) # +++
def _apply(self): # +++
print('Hello Apply')
def _okBtn(self):
print("""
Part : {}
Threshold : {}
ThreshNew : {:,.2f}""".format(
self.part, self.threshold, self.spinBox.value()))
def valueChang(self):
self.label2.setText("ThreshNew : {:,.2f}".format(self.spinBox.value()))
class Window(QWidget):
def __init__(self):
super().__init__()
label = QLabel('Hello Dialog', self)
button = QPushButton('Open Dialog', self)
button.clicked.connect(self.showDialog)
layout = QVBoxLayout()
layout.addWidget(label)
layout.addWidget(button)
self.setLayout(layout)
def showDialog(self):
self.dialog = ModelessDialog(2, 55.77, self)
self.dialog.show()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win = Window()
win.resize(300, 200)
win.show()
sys.exit(app.exec_())
</code></pre>
<p><a href="https://i.stack.imgur.com/6sCtz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6sCtz.png" alt="enter image description here"/></a></p>