wxpython实现点击上一张下一张按钮查看文件夹中所有图片文件列表

以下是一个基本的 wxPython 实现点击上一张下一张按钮查看文件夹中所有图片文件列表的例子：

import os
import wx

class MyFrame(wx.Frame):
    def __init__(self, parent, title):
        wx.Frame.__init__(self, parent, title=title, size=(800, 600))
        self.panel = wx.Panel(self)
        self.image_list = []
        self.current_index = 0
        self.image_label = wx.StaticText(self.panel, label="No images found", pos=(350, 280))
        self.prev_button = wx.Button(self.panel, label="Previous", pos=(280, 320))
        self.Bind(wx.EVT_BUTTON, self.on_prev_button_click, self.prev_button)
        self.next_button = wx.Button(self.panel, label="Next", pos=(440, 320))
        self.Bind(wx.EVT_BUTTON, self.on_next_button_click, self.next_button)

    def load_images(self, directory):
        for filename in os.listdir(directory):
            if filename.lower().endswith('.jpg') or filename.lower().endswith('.png'):
                image_path = os.path.join(directory, filename)
                self.image_list.append(image_path)

        if len(self.image_list) > 0:
            self.show_image(self.current_index)

    def show_image(self, index):
        image = wx.Image(self.image_list[index], wx.BITMAP_TYPE_ANY)
        self.image_label.SetLabel("")
        self.image_label.SetBitmap(wx.BitmapFromImage(image))

    def on_prev_button_click(self, event):
        if self.current_index > 0:
            self.current_index -= 1
            self.show_image(self.current_index)

    def on_next_button_click(self, event):
        if self.current_index < len(self.image_list) - 1:
            self.current_index += 1
            self.show_image(self.current_index)

app = wx.App()
frame = MyFrame(None, "Image Viewer")
frame.load_images("path_to_directory")
frame.Show()
app.MainLoop()

这个例子创建了一个窗口，里面包含了一个标签和两个按钮，可以用来查看指定文件夹中的所有图片文件。当点击上一张或下一张按钮时，会显示前一张或后一张图片。