pyqt - 창(windows)

필요한 패키지 설치

$ pip install pyqt5
$ sudo apt-get install qt5-default
$ sudo apt-get install libqt5x11extras5
$ pip install opencv-python==4.1.2.30

창 띄우기

import sys
from PyQt5.QtWidgets import QApplication, QWidget


class MyApp(QWidget):

    def __init__(self):
        super().__init__()	# 부모 클래스(QWidget)의 __init__ 함수를 그대로 가져와 사용
        self.initUI()

    def initUI(self):
        self.setWindowTitle('My First Application')
        self.move(300, 300)
        self.resize(400, 200)
        self.show()
        
    def center(self):	# 창을 가운데로 띄우기
        qr = self.frameGeometry()
        cp = QDesktopWidget().availableGeometry().center()
        qr.moveCenter(cp)
        self.move(qr.topLeft())



if __name__ == '__main__':
   app = QApplication(sys.argv)
   ex = MyApp()
   sys.exit(app.exec_())

창 닫기

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton
from PyQt5.QtCore import QCoreApplication


class MyApp(QWidget):

  def __init__(self):
      super().__init__()
      self.initUI()

  def initUI(self):
      btn = QPushButton('Quit', self)	# 푸시 버튼
      btn.move(50, 50)
      btn.resize(btn.sizeHint())
      btn.clicked.connect(QCoreApplication.instance().quit)
      # 버튼이 클릭되면(signal) 어떤 함수를 호출(slot)하는지 설정하기

      self.setWindowTitle('Quit Button')
      self.setGeometry(300, 300, 300, 200)
      self.show()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = MyApp()
    sys.exit(app.exec_())

창에 아이콘 넣기

import sys
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtGui import QIcon


class MyApp(QWidget):

  def __init__(self):
      super().__init__()
      self.initUI()

  def initUI(self):
      self.setWindowTitle('Icon')
      self.setWindowIcon(QIcon('web.png'))
      self.setGeometry(300, 300, 300, 200)
      self.show()


if __name__ == '__main__':
  app = QApplication(sys.argv)
  ex = MyApp()
  sys.exit(app.exec_())