如何创建简单的玻璃效果

我自己没有做过,但是,我使用codeproject source呈现了一个示例…请尝试以下操作:

http://www.codeproject.com/KB/GDI-plus/Image-Glass-Reflection.aspx

public static Image DrawReflection(Image _Image, Color _BackgroundColor, int _Reflectivity)
{
    // Calculate the size of the new image
    int height = (int)(_Image.Height + (_Image.Height * ((float)_Reflectivity / 255)));
    Bitmap newImage = new Bitmap(_Image.Width, height, PixelFormat.Format24bppRgb);
    newImage.SetResolution(_Image.HorizontalResolution, _Image.VerticalResolution);

    using (Graphics graphics = Graphics.FromImage(newImage))
    {
        // Initialize main graphics buffer
        graphics.Clear(_BackgroundColor);
        graphics.DrawImage(_Image, new Point(0, 0));
        graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
        Rectangle destinationRectangle = new Rectangle(0, _Image.Size.Height, 
                                         _Image.Size.Width, _Image.Size.Height);

        // Prepare the reflected image
        int reflectionHeight = (_Image.Height * _Reflectivity) / 255;
        Image reflectedImage = new Bitmap(_Image.Width, reflectionHeight);

        // Draw just the reflection on a second graphics buffer
        using (Graphics gReflection = Graphics.FromImage(reflectedImage))
        {
            gReflection.DrawImage(_Image, 
               new Rectangle(0, 0, reflectedImage.Width, reflectedImage.Height),
               0, _Image.Height - reflectedImage.Height, reflectedImage.Width, 
               reflectedImage.Height, GraphicsUnit.Pixel);
        }
        reflectedImage.RotateFlip(RotateFlipType.RotateNoneFlipY);
        Rectangle imageRectangle = 
            new Rectangle(destinationRectangle.X, destinationRectangle.Y,
            destinationRectangle.Width, 
            (destinationRectangle.Height * _Reflectivity) / 255);

        // Draw the image on the original graphics
        graphics.DrawImage(reflectedImage, imageRectangle);

        // Finish the reflection using a gradiend brush
        LinearGradientBrush brush = new LinearGradientBrush(imageRectangle,
               Color.FromArgb(255 - _Reflectivity, _BackgroundColor),
                _BackgroundColor, 90, false);
        graphics.FillRectangle(brush, imageRectangle);
    }

    return newImage;
}

实际上,我能够实现一个基本的玻璃效果,我的图像覆盖了一个矩形约三分之一的大小,下面的图像包含一个白色渐变填充,从25%的不透明度开始,到75%的不透明度。这是一个单一的绘画位产生玻璃状的“条纹”,我很高兴。同样的想法可以用不同的矩形宽度重复多次,产生几个“条纹”,给人一种玻璃覆盖层的错觉。

这些可能会有帮助:

http://msdn.microsoft.com/en-us/library/aa969537%28VS.85%29.aspx#blurbehind http://msdn.microsoft.com/en-us/library/ms748975.aspx