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(duì)象名稱(chēng)
        self.setWindowTitle('屏幕錄制')    # 設(shè)置窗口標(biāo)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(biāo)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(yùn)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(dòng)鼠標(biāo)獲取屏幕捕獲范圍"""

    def __init__(self):
        super().__init__()
        self.setMouseTracking(True)
        # 設(shè)置窗口布滿(mǎn)整個(gè)屏幕
        self.showFullScreen()
        # 設(shè)置窗體無(wú)邊框
        self.setWindowFlags(Qt.FramelessWindowHint)  # 窗口置頂，無(wú)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(tīng)鼠標(biāo)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(tīng)鼠標(biāo)釋放事件
        self.endpoint = event.x(), event.y()
        self.close()
    def mouseMoveEvent(self, event):
        # 監(jiān)聽(tīng)鼠標(biāo)移動(dòng)事件
        if self.bline == 1:
            self.pos = event.x(), event.y()
            event.accept()
            self.update()
    def paintEvent(self, event):
        # 繪畫(huà)事件
            pp = QPainter(self)
            pen = QPen()  # 定義筆格式對(duì)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(lèi)
from Screenshot_record import Screenshot

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