PyQt5 – 获取主窗口的不透明度级别| windowOpacity()方法
windowOpacity()方法可以让我们看到主窗口的不透明度水平。
不透明度 是衡量对电磁或其他种类的辐射,特别是可见光的不可渗透性。在辐射传输中,它描述了辐射在介质中的吸收和散射情况,如等离子体、电介质、屏蔽材料、玻璃等。
不透明度级别从0.0到1.0,其中0.0表示完全透明,1.0表示完全不透明,默认为1.0,即完全不透明。
语法: self.windowOpacity()
参数: 不需要参数。
返回: 返回一个从0.0到1.0的浮点数。
例子 1 :
# importing the required libraries
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
class Window(QMainWindow):
def __init__(self):
super().__init__()
# set the title
self.setWindowTitle("Python")
# setting the geometry of window
self.setGeometry(60, 60, 600, 400)
# getting opacity level
level = str(self.windowOpacity())
# creating a label widget
self.label_1 = QLabel(level, self)
# moving position
self.label_1.move(100, 100)
# setting up the border
self.label_1.setStyleSheet("border :3px solid blue;")
# show all the widgets
self.show()
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出:
例2 :
# importing the required libraries
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
class Window(QMainWindow):
def __init__(self):
super().__init__()
# set the title
self.setWindowTitle("Python")
# setting the geometry of window
self.setGeometry(60, 60, 600, 400)
# setting opacity level
self.setWindowOpacity(0.7)
# getting opacity level
level = str(self.windowOpacity())
# creating a label widget
self.label_1 = QLabel(level, self)
# moving position
self.label_1.move(100, 100)
# setting up the border
self.label_1.setStyleSheet("border :3px solid blue;")
# show all the widgets
self.show()
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出 :