PyQt5基础控件

import sysfrom PyQt5.QtCore import Qt
from PyQt5.QtGui import QPalette
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEditclass MyWidget(QWidget):
def __init__(self):
super(MyWidget, self).__init__()
# 初始化label
self.label = QLabel(self)
self.label.resize(100, 20)
self.label.move(10, 10)
self.label.setAutoFillBackground(True)
self.palette = QPalette()
self.palette.setColor(QPalette.Window, Qt.green)
self.label.setPalette(self.palette)
# 初始化lineEdit
self.lineEdit = QLineEdit(self)
self.lineEdit.setPlaceholderText('please enter')
self.lineEdit.resize(100, 20)
self.lineEdit.move(10, 40)
# 绑定textChanged到方法
self.lineEdit.textChanged.connect(self.syncToLabel) # 将lineEdit输入的内容显示到标签上
def syncToLabel(self, msg):
self.label.setText(msg)if __name__ == '__main__':
app = QApplication(sys.argv)
w = MyWidget()
w.resize(500, 300)
w.move(300, 300)
w.setWindowTitle('Simple')
w.show()
sys.exit(app.exec_())

import sysfrom PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QCheckBox, QRadioButton, QGroupBox, QVBoxLayout, \
QHBoxLayoutclass MyWidget(QWidget):
def __init__(self):
super(MyWidget, self).__init__()
# button
self.button = QPushButton(self)
self.button.move(10, 10)
self.button.setText('按钮')
self.button.clicked.connect(self.onButtonClicked) # radio
self.radio1 = QRadioButton("Radio button 1")
self.radio2 = QRadioButton("Radio button 2")
self.radio3 = QRadioButton("Radio button 3") vbox = QVBoxLayout()
vbox.addWidget(self.radio1)
vbox.addWidget(self.radio2)
vbox.addWidget(self.radio3)
vbox.addStretch(1) radioGroup = QGroupBox(self)
radioGroup.setLayout(vbox)
radioGroup.move(10, 50) self.radio1.clicked.connect(self.onRadioClicked)
self.radio2.clicked.connect(self.onRadioClicked)
self.radio3.clicked.connect(self.onRadioClicked) # checkBox
self.checkBox1 = QCheckBox("check box 1")
self.checkBox2 = QCheckBox("check box 2")
self.checkBox3 = QCheckBox("check box 3") hbox = QHBoxLayout()
hbox.addWidget(self.checkBox1)
hbox.addWidget(self.checkBox2)
hbox.addWidget(self.checkBox3)
hbox.addStretch(1) checkGroup = QGroupBox(self)
checkGroup.setLayout(hbox)
checkGroup.move(10, 150) self.checkBox1.stateChanged.connect(lambda: self.onCheckClicked(self.checkBox1))
self.checkBox2.stateChanged.connect(lambda: self.onCheckClicked(self.checkBox2))
self.checkBox3.stateChanged.connect(lambda: self.onCheckClicked(self.checkBox3)) def onButtonClicked(self):
print('button clicked') def onRadioClicked(self):
print('radio clicked')
if self.radio1.isChecked():
print('radio1 checked')
elif self.radio2.isChecked():
print('radio2 checked')
elif self.radio3.isChecked():
print('radio3 checked') def onCheckClicked(self, checkBox):
print('check clicked')
print(checkBox.text())if __name__ == '__main__':
app = QApplication(sys.argv)
w = MyWidget()
w.resize(500, 300)
w.move(300, 300)
w.setWindowTitle('Simple')
w.show()
sys.exit(app.exec_())

import sysfrom PyQt5.QtCore import Qt
from PyQt5.QtGui import QFont
from PyQt5.QtWidgets import QApplication, QWidget, QComboBox, QSpinBox, QSliderclass MyWidget(QWidget):
def __init__(self):
super(MyWidget, self).__init__()
# comboBox
self.com = QComboBox(self)
self.com.move(10, 10)
self.com.addItem('one')
self.com.addItem('two')
self.com.addItem('three')
self.com.currentIndexChanged.connect(self.onChange) # spinBox
self.spin = QSpinBox(self)
self.spin.resize(100, 30)
self.spin.move(10, 50)
self.spin.setRange(10, 50)
self.spin.setSingleStep(2)
self.spin.setValue(25)
self.spin.valueChanged.connect(self.onSpinChange) # slider
self.slider = QSlider(Qt.Horizontal)
self.slider.setParent(self)
self.slider.resize(300, 20)
self.slider.move(10, 100)
self.slider.setRange(50, 150)
self.slider.setTickInterval(5)
self.slider.setValue(50)
self.slider.setTickPosition(QSlider.TicksBelow)
self.slider.setFont(QFont('Arial', 18))
self.slider.valueChanged.connect(self.onSliderChange) def onChange(self, index):
print(self.com.itemText(index)) def onSpinChange(self, value):
print(value) def onSliderChange(self, value):
print(value)if __name__ == '__main__':
app = QApplication(sys.argv)
w = MyWidget()
w.resize(500, 300)
w.move(300, 300)
w.setWindowTitle('Simple')
w.show()
sys.exit(app.exec_())

import sys
from PyQt5 import QtCore
from PyQt5.QtCore import QDate, Qt
from PyQt5.QtWidgets import QApplication, QWidget, QCalendarWidget, QDateTimeEditclass MyWidget(QWidget):
def __init__(self):
super(MyWidget, self).__init__() # 日历
self.calendar = QCalendarWidget(self)
self.calendar.setMinimumDate(QDate(1980, 1, 1))
self.calendar.setMaximumDate(QDate(3000, 1, 1))
self.calendar.setGridVisible(True)
self.calendar.setFirstDayOfWeek(Qt.Monday)
self.calendar.move(10, 10)
self.calendar.clicked[QtCore.QDate].connect(self.showData) # dateTimeEdit
self.dte = QDateTimeEdit(self)
self.dte.setMaximumDate(QDate.currentDate().addDays(365))
self.dte.setMinimumDate(QDate.currentDate().addDays(-365))
self.dte.setDisplayFormat('yyyy-MM-dd HH:mm:ss')
self.dte.move(10, 250)
self.dte.dateChanged.connect(self.onDateChange)
self.dte.timeChanged.connect(self.onTimeChange)
self.dte.dateTimeChanged.connect(self.onDateTimeChange) def showData(self, date):
print(date.toString("yyyy-MM-dd dddd")) def onDateChange(self, data):
print("onDateChange: ")
print(data) def onTimeChange(self, time):
print("onTimeChange: ")
print(time) def onDateTimeChange(self, dateTime):
print("onDateTimeChange: ")
print(dateTime)if __name__ == '__main__':
app = QApplication(sys.argv)
w = MyWidget()
w.resize(500, 300)
w.move(300, 300)
w.setWindowTitle('Simple')
w.show()
sys.exit(app.exec_())