Wie kann ich Bilder mit Transparenz in verschiedenen Anwendungen zuverlässig kopieren und einfügen?

<code class="language-c#">public static void SetClipboardImage(Bitmap image, Bitmap imageNoTr, DataObject data)
{
    Clipboard.Clear();
    if (data == null) data = new DataObject();
    if (imageNoTr == null) imageNoTr = image;

    using (MemoryStream pngMemStream = new MemoryStream())
    using (MemoryStream dibMemStream = new MemoryStream())
    {
        data.SetData(DataFormats.Bitmap, true, imageNoTr); // 设置标准位图（无透明度）
        image.Save(pngMemStream, ImageFormat.Png);
        data.SetData("PNG", false, pngMemStream); // 设置PNG流（GIMP和较新MS Office兼容）
        Byte[] dibData = ConvertToDib(image);
        dibMemStream.Write(dibData, 0, dibData.Length);
        data.SetData(DataFormats.Dib, false, dibMemStream); // 设置DIB格式（处理错误解释透明度的应用）
        Clipboard.SetDataObject(data, true);
    }
}

public static Byte[] ConvertToDib(Image image)
{
    using (Bitmap bm32b = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppArgb))
    {
        using (Graphics gr = Graphics.FromImage(bm32b))
            gr.DrawImage(image, new Rectangle(0, 0, bm32b.Width, bm32b.Height));
        bm32b.RotateFlip(RotateFlipType.Rotate180FlipX);
        Int32 stride;
        Byte[] bm32bData = ImageUtils.GetImageData(bm32b, out stride);
        Int32 hdrSize = 0x28;
        Byte[] fullImage = new Byte[hdrSize + 12 + bm32bData.Length];
        ArrayUtils.WriteIntToByteArray(fullImage, 0x00, 4, true, (UInt32)hdrSize);
        ArrayUtils.WriteIntToByteArray(fullImage, 0x04, 4, true, (UInt32)image.Width);
        ArrayUtils.WriteIntToByteArray(fullImage, 0x08, 4, true, (UInt32)image.Height);
        ArrayUtils.WriteIntToByteArray(fullImage, 0x0C, 2, true, 1);
        ArrayUtils.WriteIntToByteArray(fullImage, 0x0E, 2, true, 32);
        ArrayUtils.WriteIntToByteArray(fullImage, 0x10, 4, true, 3);
        ArrayUtils.WriteIntToByteArray(fullImage, 0x14, 4, true, (UInt32)bm32bData.Length);
        ArrayUtils.WriteIntToByteArray(fullImage, hdrSize + 0, 4, true, 0x00FF0000);
        ArrayUtils.WriteIntToByteArray(fullImage, hdrSize + 4, 4, true, 0x0000FF00);
        ArrayUtils.WriteIntToByteArray(fullImage, hdrSize + 8, 4, true, 0x000000FF);
        Array.Copy(bm32bData, 0, fullImage, hdrSize + 12, bm32bData.Length);
        return fullImage;
    }
}</code>

<code class="language-c#">public static Bitmap GetClipboardImage(DataObject retrievedData)
{
    if (retrievedData.GetDataPresent("PNG", false))
    {
        MemoryStream png_stream = retrievedData.GetData("PNG", false) as MemoryStream;
        if (png_stream != null)
            using (Bitmap bm = new Bitmap(png_stream))
                return ImageUtils.CloneImage(bm);
    }
    else if (retrievedData.GetDataPresent(DataFormats.Dib, false))
    {
        MemoryStream dib = retrievedData.GetData(DataFormats.Dib, false) as MemoryStream;
        if (dib != null)
            return ImageFromClipboardDib(dib.ToArray());
    }
    else if (retrievedData.GetDataPresent(DataFormats.Bitmap))
        return new Bitmap(retrievedData.GetData(DataFormats.Bitmap) as Image);
    else if (retrievedData.GetDataPresent(typeof(Image)))
        return new Bitmap(retrievedData.GetData(typeof(Image)) as Image);
    return null;
}

public static Bitmap ImageFromClipboardDib(Byte[] dibBytes)
{
    if (dibBytes == null || dibBytes.Length < 4 || dibBytes.Length < (Int32)ArrayUtils.ReadIntFromByteArray(dibBytes, 0, 4, true))
        return null;
    Int32 width = (Int32)ArrayUtils.ReadIntFromByteArray(dibBytes, 0x04, 4, true);
    Int32 height = (Int32)ArrayUtils.ReadIntFromByteArray(dibBytes, 0x08, 4, true);
    Int16 planes = (Int16)ArrayUtils.ReadIntFromByteArray(dibBytes, 0x0C, 2, true);
    Int16 bitCount = (Int16)ArrayUtils.ReadIntFromByteArray(dibBytes, 0x0E, 2, true);
    Int32 compression = (Int32)ArrayUtils.ReadIntFromByteArray(dibBytes, 0x10, 4, true);
    if (planes != 1 || (compression != 0 && compression != 3))
        return null;
    PixelFormat fmt;
    switch (bitCount)
    {
        case 32: fmt = PixelFormat.Format32bppRgb; break;
        case 24: fmt = PixelFormat.Format24bppRgb; break;
        case 16: fmt = PixelFormat.Format16bppRgb555; break;
        default: return null;
    }
    Int32 stride = (((((bitCount * width) + 7) / 8) + 3) / 4) * 4;
    Int32 imageIndex = 40 + (compression == 3 ? 12 : 0);
    if (dibBytes.Length < imageIndex) return null;
    Byte[] image = new Byte[dibBytes.Length - imageIndex];
    Array.Copy(dibBytes, imageIndex, image, 0, image.Length);
    Bitmap bitmap = ImageUtils.BuildImage(image, width, height, stride, fmt, null, null);

    // ... (ImageFromClipboardDib function continues,  requires ImageUtils.BuildImage implementation) ...
}</code>