背景

课程设计GUI须要，补充在之前文章的繁难图片读取软件上

实现

首先要定义一个惯例按钮

self.bt2 = QPushButton('浏览', self)self.bt2.setGeometry(80, 90, 70 ,30) self.bt2.setToolTip('<b>点击这里浏览文件</b>')

将按钮链接到文件浏览性能中

self.bt2.clicked.connect(self.setBrowerPath)

文件浏览模块

def setBrowerPath(self):         file_path, file_type = QFileDialog.getOpenFileName(self, '关上文件','./',("Images (*.png *.xpm *.jpg)"))    self.text.setText(file_path)    self.text.selectAll()    self.text.setFocus()

成果

附录

思否这边如同不反对折叠性能，全副在里面有点臃肿，凑活看吧

import sysimport cv2import numpyfrom PyQt5.QtWidgets import QFileDialog, QApplication, QWidget, QPushButton, QMessageBox, QLineEditfrom PyQt5.QtGui import QIconfrom random import randintclass Example(QWidget):    def __init__(self):        super().__init__()        self.initUI()        # self.filename = 'a.jpg'    def initUI(self):        self.setGeometry(300, 300, 300, 150)        self.setWindowTitle('读取图片')        self.setWindowIcon(QIcon('res/faye.jpg'))        self.bt1 = QPushButton('读取', self)        self.bt1.setGeometry(150, 90, 70 ,30)        self.bt1.setToolTip('<b>点击这里读取图片</b>')        self.bt1.clicked.connect(self.showMessage)        self.bt2 = QPushButton('浏览', self)        self.bt2.setGeometry(80, 90, 70 ,30)        self.bt2.setToolTip('<b>点击这里浏览文件</b>')        self.bt2.clicked.connect(self.setBrowerPath)        self.text = QLineEdit('在这里输出文件门路（不要含有中文）', self)        self.text.selectAll()        self.text.setFocus()        self.text.setGeometry(25, 50, 250 ,30)        self.show()    def showMessage(self):        filename = self.text.text()        # print(filename)        img = cv2.imread(filename)        img1 = cv2.imread('a.jpg')                if type(img) == type(img1):            QMessageBox.about(self, '小问题...','门路如同错了')            self.text.selectAll()            self.text.setFocus()        else:            cv2.imshow(filename, img)            cv2.waitKey(0)            self.text.clear()            self.text.setText('在这里输出文件门路（不要含有中文）')            self.text.selectAll()            self.text.setFocus()    def setBrowerPath(self):                 file_path, file_type = QFileDialog.getOpenFileName(self, '关上文件','./',("Images (*.png *.xpm *.jpg)"))           self.text.setText(file_path)        self.text.selectAll()        self.text.setFocus()    def closeEvent(self, event):        reply = QMessageBox.question(self, '确认', '确认退出吗', QMessageBox.Yes | QMessageBox.No, QMessageBox.No)        if reply == QMessageBox.Yes:            event.accept()                else:            event.ignore()  if __name__ == '__main__':    app = QApplication(sys.argv)    ex = Example()    sys.exit(app.exec_())

完