Python使用wxPython和PyMuPDF实现合并PDF文档

import os
import wx
import fitz
import pyperclip

class MainWindow(wx.Frame):
    def __init__(self, parent, title):
        super(MainWindow, self).__init__(parent, title=title, size=(500, 300))
        
        self.panel = wx.Panel(self)
        self.text_ctrl = wx.TextCtrl(self.panel, style=wx.TE_MULTILINE)
        self.button = wx.Button(self.panel, label="合并并复制到剪贴板")
        self.button.Bind(wx.EVT_BUTTON, self.on_merge_and_copy)
        
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.text_ctrl, proportion=1, flag=wx.EXPAND)
        sizer.Add(self.button, flag=wx.ALIGN_RIGHT | wx.ALL, border=10)
        self.panel.SetSizer(sizer)
        
        self.Show()
    
    def on_merge_and_copy(self, event):
        dlg = wx.DirDialog(self, "选择文件夹")
        if dlg.ShowModal() == wx.ID_OK:
            folder_path = dlg.GetPath()
            merged_content = self.merge_pdf_text(folder_path)
            self.text_ctrl.SetValue(merged_content)
            pyperclip.copy(merged_content)
            print("合并后的内容已复制到剪贴板。")
        dlg.Destroy()
    
    def merge_pdf_text(self, folder_path):
        merged_content = ""
        for filename in os.listdir(folder_path):
            if filename.endswith(".pdf"):
                pdf_path = os.path.join(folder_path, filename)
                doc = fitz.open(pdf_path)
                for page in doc:
                    merged_content += page.get_text()
                doc.close()
        return merged_content

app = wx.App()
MainWindow(None, "PDF合并工具")
app.MainLoop()