[英]How to add widgets dynamically upon selecting an option from QComboBox in Pyqt5
I want to add widgets in GUI when a user selects a particular item from QComboBox. 当用户从QComboBox选择特定项目时,我想在GUI中添加小部件。
With the different options in combo-box Pip config , I want GUI to look like as in the following images. 通过组合框Pip config中的不同选项,我希望GUI如下图所示。 In the right image, there are extra widgets present for an item Multi pip .
在右边的图像中,有一个用于Multi pip的额外小部件。 Also I want the location of the extra widgets as shown in the right image.
我也想要额外的小部件的位置,如右图所示。
How to add these widgets dynamically ? 如何动态添加这些小部件? Please find the code below.
请在下面找到代码。
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import Qt, QRect
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
vbox = QVBoxLayout()
CpsLabel = QLabel()
CpsLabel.setText("<font size = 12>Cps</font>")
CpsLabel.setAlignment(Qt.AlignCenter)
CpsLabel.setTextFormat(Qt.RichText)
CpsPipConfigLabel = QLabel('Pip config: ')
CpsPipConfigComboBox = QComboBox()
CpsPipConfigComboBox.addItems(['Single pip', 'Dual pip', 'Multi pip'])
CpsPipConfigComboBox.setCurrentIndex(2)
CpsChannel = QLabel('Cps channel: ')
CpsChannelComboBox = QComboBox()
CpsChannelComboBox.addItems(['A', 'B', 'C', 'D'])
CpsChannelComboBox.setCurrentIndex(0)
CpsTotalTeethLabel = QLabel('Total teeth: ')
CpsTotalTeethEdit = QLineEdit()
CpsTotalTeethEdit.setFixedWidth(50)
CpsTotalTeethEdit.setPlaceholderText('18')
CpsTotalTeethEdit.setValidator(QIntValidator())
CpsMissingTeethLabel = QLabel('Missing teeth: ')
CpsMissingTeethEdit = QLineEdit()
CpsMissingTeethEdit.setFixedWidth(50)
CpsMissingTeethEdit.setPlaceholderText('1')
CpsMissingTeethEdit.setValidator(QIntValidator())
vbox.addWidget(CpsLabel)
vbox.addStretch()
CpsQHBox1 = QHBoxLayout()
CpsQHBox1.setSpacing(0)
CpsQHBox1.addStretch()
CpsQHBox1.addWidget(CpsPipConfigLabel)
CpsQHBox1.addWidget(CpsPipConfigComboBox)
CpsQHBox1.addStretch()
vbox.addLayout(CpsQHBox1)
vbox.addStretch()
CpsQHBox2 = QHBoxLayout()
CpsQHBox2.setSpacing(0)
CpsQHBox2.addStretch()
CpsQHBox2.addSpacing(20)
CpsQHBox2.addWidget(CpsTotalTeethLabel)
CpsQHBox2.addWidget(CpsTotalTeethEdit)
CpsQHBox2.addStretch()
CpsQHBox2.addWidget(CpsMissingTeethLabel)
CpsQHBox2.addWidget(CpsMissingTeethEdit)
CpsQHBox2.addStretch()
vbox.addLayout(CpsQHBox2)
vbox.addStretch()
CpsQHBox3 = QHBoxLayout()
CpsQHBox3.setSpacing(0)
CpsQHBox3.addStretch()
CpsQHBox3.addWidget(CpsChannel)
CpsQHBox3.addWidget(CpsChannelComboBox)
CpsQHBox3.addStretch()
vbox.addLayout(CpsQHBox3)
vbox.addStretch()
self.setLayout(vbox)
self.setGeometry(200, 100, 300, 300)
self.setWindowTitle('Steady state data processing')
self.setWindowIcon(QIcon('duty_vs_suction_map_sum.png'))
self.setAutoFillBackground(True)
p = self.palette()
p.setColor(self.backgroundRole(), QColor(255,250,100))
# p.setColor(self.backgroundRole(), Qt.blue)
self.setPalette(p)
self.show()
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
I suggest you set the widgets up and place them at the beginning like you have them, but set them invisible. 我建议您设置小部件,并像放置它们一样将其放置在开头,但将它们设置为不可见。 Then make a method that sets the appropriate widgets visible based on the qcombobox's current text and connect it to the qcombobox's activated signal.
然后使一个方法根据qcombobox的当前文本设置适当的小部件可见,并将其连接到qcombobox的激活信号。
You will also need to add self
in front of almost every object so that it can be referred to from other methods. 您还需要在几乎每个对象的前面添加
self
,以便可以从其他方法中引用它。
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
# setup code here...
self.CpsTotalTeethEdit.setVisible(False)
self.CpsTotalTeethLabel.setVisible(False)
self.CpsPipConfigComboBox.activated.connect(self.setup_total_teeth)
self.show()
def setup_widgets(self):
if self.CpsPipConfigComboBox.currentText() == "Multi pip":
self.CpsTotalTeethLabel.setVisible(True)
self.CpsTotalTeethEdit.setVisible(True)
By setting the items invisible instead of adding them with this method, you can also set them to be not visible when the cobobox's position is not for them. 通过将项目设置为不可见而不是使用此方法添加它们,还可以将其设置为在cobobox的位置不适合它们时不可见。
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