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我想在纯色位图上用透明度平铺一个png。平面png与位图顶部的c#
到目前为止我有此
using (System.Drawing.Image backImage = System.Drawing.Image.FromFile(layer1imagename))
using (System.Drawing.Image frontImage = System.Drawing.Image.FromFile(HttpContext.Current.Server.MapPath("~/") + layer2))
using (Image IMG1 = new Bitmap(251, 400))
using (Graphics compositeGraphics = Graphics.FromImage(IMG1))
{
compositeGraphics.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceCopy;
compositeGraphics.DrawImageUnscaled(backImage, 0, 0);
compositeGraphics.DrawImageUnscaled(frontImage, 0, 0);
compositeGraphics.Dispose();
frontImage.Dispose();
backImage.Dispose();
IMG1.Save(layer1imagename, System.Drawing.Imaging.ImageFormat.Png);
}
然而这原来除去顶层的透明度。我如何保留顶部的透明PNG?
这似乎拯救了PNG,但你不能通过它看到背景颜色? – user987723
@ user987723看到我的编辑上面... – Yahia
你真了不起!多谢,伙计 – user987723