当鼠标单击图像时，Pyqt 获取像素位置和值

import sys
from PyQt5.QtWidgets import QApplication, QLabel, QMainWindow
from PyQt5.QtGui import QPixmap, QImage
from PyQt5.QtCore import Qt

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Image Viewer")
        self.label = QLabel(self)
        self.setCentralWidget(self.label)

        # 加载图像
        image_path = "path_to_your_image.jpg"
        self.image = QImage(image_path)
        self.label.setPixmap(QPixmap.fromImage(self.image))

    def mousePressEvent(self, event):
        # 获取鼠标点击位置
        pos = event.pos()

        # 获取像素值
        pixel_value = self.image.pixel(pos)

        # 获取RGB值
        rgb = QColor(pixel_value).getRgb()

        print("点击位置：", pos)
        print("像素值：", pixel_value)
        print("RGB值：", rgb)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())