在Qtreeview中的空白区域按下时清除文件选择

from PyQt5.QtWidgets import QTreeView, QApplication
from PyQt5.QtCore import Qt

class MyTreeView(QTreeView):
    def __init__(self, parent=None):
        super().__init__(parent)
    
    def mousePressEvent(self, event):
        if event.button() == Qt.LeftButton:
            index = self.indexAt(event.pos())
            if not index.isValid():
                self.clearSelection()
        
        super().mousePressEvent(event)

# 示例用法
if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    
    treeView = MyTreeView()
    # 添加文件项到treeView
    
    treeView.show()
    sys.exit(app.exec_())