知识点：
1、QComboBox下拉列表框的一些常用方法
2、下拉列表框常用信号使用方法
#[str] 表示comboBox中的选择框内容如A B C D 等 self.comboBox.activated[str].connect(self.BrushPhoto)
定义的BrushPhoto(self) 函数
def BrushPhoto(self, text): if text=="A": self.graphicsView_5.setStyleSheet("border-image: url(:/brush/photo/brush/A.png);") self.lineEdit_58.setText("刷子A") elif text=="B": self.graphicsView_5.setStyleSheet("border-image: url(:/brush/photo/brush/B.png);") self.lineEdit_58.setText("刷子B") elif text=="C": self.graphicsView_5.setStyleSheet("border-image: url(:/brush/photo/brush/C.png);") self.lineEdit_58.setText("刷子C") elif text=="D": self.graphicsView_5.setStyleSheet("border-image: url(:/brush/photo/brush/D.png);") self.lineEdit_58.setText("刷子D") elif text=="E": self.graphicsView_5.setStyleSheet("border-image: url(:/brush/photo/brush/E.png);") self.lineEdit_58.setText("刷子E") elif text=="F": self.graphicsView_5.setStyleSheet("border-image: url(:/brush/photo/brush/F.png);") self.lineEdit_58.setText("刷子F")
【PyQt5-Qt Designer】QComboBox-下拉列表框
原文：https://www.cnblogs.com/XJT2018/p/10069425.html
