记录一下自己运用到的PyQt5代码, 以后再遇到类似的开发需要的时候, 直接修改复用就好, 而且, 这其中很多代码是我觉得比较典型的, 偶尔回顾浏览也比较有教学意义.
例子
1. Python 加载ui文件并实现一个按钮的示例代码
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| from PyQt5.QtWidgets import QApplication, QPushButton
from PyQt5 import uic
class Stats:
def __init__(self):
# 从文件中加载UI定义
# 从 UI 定义中动态 创建一个相应的窗口对象
# 注意：里面的控件对象也成为窗口对象的属性了
# 比如 self.ui.button , self.ui.textEdit
self.ui = uic.loadUi("./ui/mainwindow.ui")
# 信号和槽
self.ui.pushButton.clicked.connect(self.handleCalc)
def handleCalc(self):
print("点击事件")
app = QApplication([])
stats = Stats()
stats.ui.show()
app.exec_()
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PyQt5 使用QMessageBox的例子
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| https://www.cnblogs.com/itwangqiang/articles/14955828.html
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2. PyQt5 加载ui文件实现关机重启弹窗
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| from PyQt5.QtWidgets import QApplication, QPushButton, QMessageBox
from PyQt5 import uic
import os
class Stats:
def __init__(self):
# 从文件中加载UI定义
# 从 UI 定义中动态 创建一个相应的窗口对象
# 注意：里面的控件对象也成为窗口对象的属性了
# 比如 self.ui.button , self.ui.textEdit
self.ui = uic.loadUi("./ui/mainwindow.ui")
# 信号和槽
self.ui.pushButton.clicked.connect(self.handleBtnPoweroff)
def handleBtnPoweroff(self):
msgBox = QMessageBox()
msgBox.setText("The document has been modified.")
msgBox.setInformativeText("Do you want to save your changes?")
reboot = msgBox.addButton("重启",QMessageBox.ApplyRole)
poweroff = msgBox.addButton("关机",QMessageBox.ApplyRole)
cancel = msgBox.addButton("取消",QMessageBox.DestructiveRole)
reboot.clicked.connect(self.doReboot)
poweroff.clicked.connect(self.doPowerOff)
msgBox.setDefaultButton(cancel)
ret = msgBox.exec_()
print(ret)
def doReboot(self):
os.system("reboot")
def doPowerOff(self):
os.system("poweroff")
app = QApplication([])
stats = Stats()
stats.ui.show()
app.exec_()
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3. 键盘监听关机按钮响应, 并实现关机功能. (可用于任何按键)
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| from PyQt5.QtWidgets import QApplication, QPushButton, QMessageBox
from PyQt5 import uic
import os
from pynput import keyboard
class Stats:
def __init__(self):
# 从文件中加载UI定义
# 从 UI 定义中动态 创建一个相应的窗口对象
# 注意：里面的控件对象也成为窗口对象的属性了
# 比如 self.ui.button , self.ui.textEdit
self.ui = uic.loadUi("./ui/mainwindow.ui")
# 信号和槽
self.startKb()
def on_press(self, key):
try:
print('\nalphanumeric key {0} pressed'.format(
key.char))
except AttributeError:
print('special key {0} pressed'.format(
key))
pass
def on_release(self, key):
print('{0} released'.format(
key))
if key == keyboard.Key.esc:
# Stop listener
return False
if str(key) == "<269025066>":
print("you pushed power off button")
self.handleBtnPoweroff()
return True
def startKb(self):
listener = keyboard.Listener(
on_press=self.on_press,
on_release=self.on_release)
listener.start()
def handleBtnPoweroff(self):
msgBox = QMessageBox()
msgBox.setText("warning.")
msgBox.setInformativeText("Are you sure to reboot?")
reboot = msgBox.addButton("重启", QMessageBox.ApplyRole)
poweroff = msgBox.addButton("关机", QMessageBox.ApplyRole)
cancel = msgBox.addButton("取消", QMessageBox.ApplyRole)
reboot.clicked.connect(self.doReboot)
poweroff.clicked.connect(self.doPowerOff)
msgBox.setDefaultButton(cancel)
ret = msgBox.exec_()
print(ret)
def doReboot(self):
os.system("reboot")
def doPowerOff(self):
os.system("poweroff")
app = QApplication([])
stats = Stats()
stats.ui.show()
app.exec_()
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