from PyQt5.QtWidgets import (QMainWindow, QApplication, QDesktopWidget, QWidget, QFrame,
                             QLabel, QPushButton, QComboBox, QCheckBox, QSpinBox, QDialog, QFileDialog, QMessageBox)
from PyQt5.QtGui import QIcon, QFont, QColor, QImage, QPixmap, QPen, QPainter
from PyQt5.QtCore import QRect, Qt, QPoint, QMetaObject, QThread  

class Ui_MainWindow(QMainWindow):
    """主體窗口設(shè)置"""
    def __init__(self):
        super().__init__()
        self.setObjectName("MainWindow")  # 設(shè)置窗口對象名稱
        self.setWindowTitle('屏幕錄制')    # 設(shè)置窗口標題
        self.resize(512, 352)   # 設(shè)置窗口大小
        self.setupUi()     # 設(shè)置顯示部件
        self.show()        # 窗口顯示
    def setipUi(self):
        # 設(shè)置窗口需要顯示的部件
        # self.centralwidget = QWidget(self)  部件載體
        # self.centralwidget.setObjectName("centralwidget")
        # 標簽框設(shè)置： QLabel(self.centralwidget)
        # 復(fù)選框設(shè)置： QCheckBox(self.centralwidget)
        # 按鍵設(shè)置：   QPushButton(self.centralwidget)
        # 調(diào)度框設(shè)置： QSpinBox(self.centralwidget)
def main():
    """運行函數(shù)"""
    app = QApplication(sys.argv)
    app.setAttribute(Qt.AA_UseHighDpiPixmaps)
    ui = Ui_MainWindow()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

class MousePaint(QDialog):
    """移動鼠標獲取屏幕捕獲范圍"""

    def __init__(self):
        super().__init__()
        self.setMouseTracking(True)
        # 設(shè)置窗口布滿整個屏幕
        self.showFullScreen()
        # 設(shè)置窗體無邊框
        self.setWindowFlags(Qt.FramelessWindowHint)  # 窗口置頂，無邊框
        # 設(shè)置背景透明
        self.setWindowOpacity(0.5)
        self.initUI()
        self.setFocus()
    def initUI(self):
        self.setGeometry(*(QDesktopWidget().screenGeometry()).getRect())
        self.pix = QPixmap()
        self.lastpoint = QPoint()
        self.endpoint = QPoint()
        self.pos = None
        self.bline = 0
    def mousePressEvent(self, event):
        # 監(jiān)聽鼠標按壓事件
        if event.button() == Qt.LeftButton:
            self.lastpoint = event.x(), event.y()
            self.bline = 1
        elif event.button() == Qt.RightButton:
            self.close()
        event.accept()
    def mouseReleaseEvent(self, event):
        # 監(jiān)聽鼠標釋放事件
        self.endpoint = event.x(), event.y()
        self.close()
    def mouseMoveEvent(self, event):
        # 監(jiān)聽鼠標移動事件
        if self.bline == 1:
            self.pos = event.x(), event.y()
            event.accept()
            self.update()
    def paintEvent(self, event):
        # 繪畫事件
            pp = QPainter(self)
            pen = QPen()  # 定義筆格式對象
            pen.setWidth(5)  # 設(shè)置筆的寬度
            pen.setColor(QColor(255, 0, 0))
            pp.setPen(pen)
            lpx, lpy = self.lastpoint
            pp.drawRect(lpx, lpy, self.pos[0] - lpx, self.pos[1] - lpy)

from PyQt5.QtCore import QThread  # Pyqt5的QThread類
from Screenshot_record import Screenshot

class Thread_screenshot(QThread):
    def __init__(self):
        super().__init__()
        self.screen = Screenshot()  # 屏幕錄制類