PyQt5（4）同時設置圖標和窗口位置和大小代碼

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

class FirstMainWin(QMainWindow):
    def __init__(self):
        super(FirstMainWin,self).__init__()
        self.setWindowTitle('主窗口')
        app.setWindowIcon(QIcon('./image/11.png'))#設置窗口圖標
        self.setGeometry(300,300,250,700)  #設置窗口的位置和尺寸
if __name__=='__main__':  
    app=QApplication(sys.argv)
    main=FirstMainWin()
    main.show()    
    sys.exit(app.exec_())