public static void AlphaBlendImage(Graphics g, Image image, int x, int y, int alpha)
{
int width = image.Width;
int weight = image.Height;
using (Graphics imageG = Graphics.FromImage(image))
{
IntPtr hdcDst = g.GetHdc();
IntPtr hdcSrc = imageG.GetHdc();
GdiEx.BlendFunction blendFunction = new GdiEx.BlendFunction();
blendFunction.BlendOp = (byte)GdiEx.BlendOperation.AC_SRC_OVER;
blendFunction.BlendFlags = (byte)GdiEx.BlendFlags.Zero;
blendFunction.SourceConstantAlpha = (byte)alpha;
blendFunction.AlphaFormat = (byte)0;
AlphaBlend(hdcDst, x, y, width, weight, hdcSrc, 0, 0, width, weight, blendFunction);
imageG.ReleaseHdc(hdcSrc);
g.ReleaseHdc(hdcDst);
}
}
public static void AlphaBlendImage(Graphics g, Image image, int x, int y, int alpha)
{
int width = image.Width;
int weight = image.Height;
using (Graphics imageG = Graphics.FromImage(image))
{
IntPtr hdcDst = g.GetHdc();
IntPtr hdcSrc = imageG.GetHdc();
GdiEx.BlendFunction blendFunction = new GdiEx.BlendFunction();
blendFunction.BlendOp = (byte)GdiEx.BlendOperation.AC_SRC_OVER;
blendFunction.BlendFlags = (byte)GdiEx.BlendFlags.Zero;
blendFunction.SourceConstantAlpha = (byte)alpha;
blendFunction.AlphaFormat = (byte)0;
AlphaBlend(hdcDst, x, y, width, weight, hdcSrc, 0, 0, width, weight, blendFunction);
imageG.ReleaseHdc(hdcSrc);
g.ReleaseHdc(hdcDst);
}
}