如何将 WicImagingBitmap 转换为 Gdi+ 位图或流？

Question

我是一名 .net 开发人员，我正在使用 WindowsAPICodePackage WIC 来呈现图像。我想使用自己的方法“SaveToFile”将 WIC ImagingBitmap 转换为 gdi+ 位图或 MemoryStream。有办法吗？这是我的代码，请帮忙：

int width = 256;
int height = 256;

D2DFactory d2DFactory = D2DFactory.CreateFactory(D2DFactoryType.SingleThreaded);
RenderTargetProperties renderTargetProperties = new RenderTargetProperties
{
    PixelFormat = new PixelFormat(Format.B8G8R8A8UNorm, AlphaMode.Premultiplied),
    Usage = RenderTargetUsages.GdiCompatible,
    RenderTargetType = RenderTargetType.Software
};

ImagingFactory wicFactory = ImagingFactory.Create();
ImagingBitmap imagingBitmap = wicFactory.CreateImagingBitmap((uint)width
    , (uint)height, Microsoft.WindowsAPICodePack.DirectX.WindowsImagingComponent.PixelFormats.Pbgra32Bpp, BitmapCreateCacheOption.CacheOnLoad);

RenderTarget renderTarget = d2DFactory.CreateWicBitmapRenderTarget(imagingBitmap, renderTargetProperties);
renderTarget.BeginDraw();

Random r = new Random();
for (int i = 0; i < 10; i++)
{
    renderTarget.DrawLine(new Point2F(r.Next(0, width), r.Next(0, height)), new Point2F(r.Next(0, width), r.Next(0, height))
        , renderTarget.CreateSolidColorBrush(new ColorF(1, 1, 0)), 4);
}
renderTarget.EndDraw();

string imageFilePath = @"c:\wic.png";
imagingBitmap.SaveToFile(wicFactory, ContainerFormats.Png, imageFilePath);

谢谢，

Answer 1

这是我找到的，希望对您有所帮助。 http://www.leadtools.com/help/leadtools/v15/DH/Wpf/TO/Tutorial_Load.htm