使用win32模块创建透明的Python窗口

import win32gui
import win32api
import win32con

class TransparentWindow:
    def __init__(self):
        # 窗口类名
        self.window_class_name = "TransparentWindowClass"
        # 注册窗口类
        self.register_window_class()

    def register_window_class(self):
        # 创建窗口类
        wnd_class = win32gui.WNDCLASS()
        wnd_class.style = win32con.CS_HREDRAW | win32con.CS_VREDRAW
        wnd_class.lpfnWndProc = self.window_proc
        wnd_class.hInstance = win32api.GetModuleHandle(None)
        wnd_class.hbrBackground = win32con.COLOR_WINDOW
        wnd_class.lpszClassName = self.window_class_name
        # 注册窗口类
        win32gui.RegisterClass(wnd_class)

    def window_proc(self, hwnd, msg, wparam, lparam):
        if msg == win32con.WM_PAINT:
            # 绘制窗口内容
            hdc, paint_struct = win32gui.BeginPaint(hwnd)
            win32gui.FillRect(hdc, paint_struct.rcPaint, win32gui.GetStockObject(win32con.WHITE_BRUSH))
            win32gui.EndPaint(hwnd, paint_struct)
            return 0
        elif msg == win32con.WM_DESTROY:
            # 销毁窗口
            win32gui.PostQuitMessage(0)
            return 0
        else:
            return win32gui.DefWindowProc(hwnd, msg, wparam, lparam)

def create_transparent_window():
    # 创建窗口实例
    window = TransparentWindow()
    # 创建窗口
    hwnd = win32gui.CreateWindow(
        window.window_class_name,
        "Transparent Window",
        win32con.WS_OVERLAPPEDWINDOW,
        win32con.CW_USEDEFAULT,
        win32con.CW_USEDEFAULT,
        500,
        300,
        None,
        None,
        win32api.GetModuleHandle(None),
        None
    )
    # 设置窗口透明属性
    win32gui.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, win32gui.GetWindowLong(hwnd, win32con.GWL_EXSTYLE) | win32con.WS_EX_LAYERED)
    win32gui.SetLayeredWindowAttributes(hwnd, win32api.RGB(0, 0, 0), 128, win32con.LWA_ALPHA)
    # 显示窗口
    win32gui.ShowWindow(hwnd, win32con.SW_SHOWDEFAULT)
    win32gui.UpdateWindow(hwnd)

if __name__ == "__main__":
    create_transparent_window()
    # 进入消息循环
    win32gui.PumpMessages()