问RTL窗口上的PrintWindow会生成带有PW_RENDERFULLCONTENT标志的镜像图像

EN

def get_window_image(hwnd: int, window_region: Region) -> np.ndarray:
    PW_RENDERFULLCONTENT = 2

    dc_handle = None
    dc_obj = None
    save_bitmap = None
    memory_dc_obj = None

    try:
        # Creating device context for retrieving the screenshot. Based on the following:
        # https://stackoverflow.com/questions/19695214/python-screenshot-of-inactive-window-printwindow-win32gui
        # Documentation about device context:
        # https://docs.microsoft.com/en-us/cpp/mfc/device-contexts?view=vs-2019

        dc_handle = win32gui.GetWindowDC(hwnd)
        dc_obj = win32ui.CreateDCFromHandle(dc_handle)
        memory_dc_obj = dc_obj.CreateCompatibleDC()

        # Create a bitmap from the device context
        save_bitmap = win32ui.CreateBitmap()
        save_bitmap.CreateCompatibleBitmap(dc_obj, window_region.get_width(), window_region.get_height())
        memory_dc_obj.SelectObject(save_bitmap)

        if sys.getwindowsversion().major >= 8:
            render_flags = PW_RENDERFULLCONTENT
        else:
            render_flags = 0

        # Take a screenshot of the window
        windll.user32.PrintWindow(hwnd, memory_dc_obj.GetSafeHdc(), render_flags)

        # Retrieve the bitmap content from the taken screenshot
        bmp_info = save_bitmap.GetInfo()
        bmp_str = save_bitmap.GetBitmapBits(True)

        bmp_height, bmp_width = bmp_info['bmHeight'], bmp_info['bmWidth']
        window_image = np.fromstring(string=bmp_str, dtype=np.uint8)

        window_image = window_image.reshape((bmp_height, bmp_width, 4))
        window_image[:, :, 3] = 255  # remove alpha channel

        return window_image

    finally:
        if save_bitmap is not None:
            win32gui.DeleteObject(save_bitmap.GetHandle())

        if memory_dc_obj is not None:
            memory_dc_obj.DeleteDC()

        if dc_obj is not None:
            dc_obj.DeleteDC()

        if dc_handle is not None:
            win32gui.ReleaseDC(hwnd, dc_handle)

win32gui.MessageBox(None, 'משהו בעברית', 'test-rtl', win32con.MB_ICONWARNING | win32con.MB_RTLREADING)