PyQt5实战——《窗口屏幕中居中显示》

# QDesktopWidget
import sys
from PyQt5.QtWidgets import QDesktopWidget,QMainWindow,QApplication
from PyQt5.QtGui import QIcon

class CenterForm(QMainWindow):
    def __init__(self):
        super(CenterForm,self).__init__()

        # 设置主窗口的标题
        self.setWindowTitle('让窗口居中')

        # 设置窗口的尺寸
        self.resize(400,300)

    def center(self):  # 定义一个函数使得窗口居中显示
        # 获取屏幕坐标系
        screen = QDesktopWidget().screenGeometry()
        # 获取窗口坐标系
        size = self.geometry()
        newLeft = (screen.width() - size.width()) / 2
        newTop = (screen.height() - size.height()) / 2
        self.move(int(newLeft),int(newTop))


if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = CenterForm()
    main.center()  #加上以后效果好多了
    main.show()
    sys.exit(app.exec_())