2张gif图片连接后背景出现黑色，求教高手解决。。。。。。

[活着便精彩]

private void button1_Click(object sender, EventArgs e)
{
////方法一
Image i1 = Image.FromFile(@"D:\tool\2005\demo\battery1.gif");
Image i2 = Image.FromFile(@"D:\tool\2005\demo\battery2.gif");
GetImage(i1, i2);

//方法二
//Bitmap bmp = new Bitmap(72, 36);
//Image img1 = new Bitmap(this.p1.Image, 36, 36);
//Image img2 = new Bitmap(this.p2.Image, 36 ,36);
//Graphics g = Graphics.FromImage(bmp);
//g.DrawImage(img1, 0, 0);
//g.DrawImage(img2, img1.Width, 0);
//this.p3.Image = (Image)bmp;
//this.p3.Image.Save(@"D:\tool\2005\demo\111.gif", ImageFormat.Gif);

}

public void GetImage(Image img1, Image img2)
{
int width = img1.Width + img2.Width;
int height = img1.Height > img2.Height ? img1.Height : img2.Height;
Bitmap bmp = new Bitmap(width, height);
Graphics graphics = Graphics.FromImage(bmp);

Rectangle rect1 = new Rectangle(0, 0, img1.Width, img1.Height);
Rectangle rect2 = new Rectangle(rect1.Right, 0, img2.Width, img2.Height);
graphics.DrawImage(img1,rect1,0,0,img1.Width,img1.Height,GraphicsUnit.Pixel);
graphics.DrawImage(img2,rect2,0,0,img2.Width,img2.Height,GraphicsUnit.Pixel);

graphics.Flush();
graphics.Dispose();
bmp.MakeTransparent();
bmp.Save(@"D:\tool\2005\demo\battery2.gif", ImageFormat.Gif);
bmp.Dispose();
}

[zx005]

bmp.MakeTransparent();
加个这个干什么，我试了下去掉这个就没黑色的了

[slimfeng]

肯定跟你图片有关，gif文件一般有多帧组成，你读取的时候只读取第一帧，
楼主可以采用下方法设成需要的颜色（可以从Image1或Image2中提取）

        public void GetImage(Image img1, Image img2)
        {
            int width = img1.Width + img2.Width;
            int height = img1.Height > img2.Height ? img1.Height : img2.Height;
            Bitmap bmp = new Bitmap(width, height);
            int x, y;
            Graphics graphics = Graphics.FromImage(bmp);
            bmp.Save(@"f:\test4.gif", ImageFormat.Gif);//此处可以看到创建的默认图片，一般为黑色

            // Loop through the images pixels to reset color.
            for (x = 0; x < bmp.Width; x++)
            {
                for (y = 0; y < bmp.Height; y++)
                {
                    Color pixelColor = bmp.GetPixel(x, y);
                    Color newColor = Color.FromArgb(255, 255, 255);
                    bmp.SetPixel(x, y, newColor);
                }
            }


            Rectangle rect1 = new Rectangle(0, 0, img1.Width, img1.Height);
            Rectangle rect2 = new Rectangle(rect1.Right, 0, img2.Width, img2.Height);
            graphics.DrawImage(img1, rect1, 0, 0, img1.Width, img1.Height, GraphicsUnit.Pixel);
            graphics.DrawImage(img2, rect2, 0, 0, img2.Width, img2.Height, GraphicsUnit.Pixel);

            graphics.Flush();
            graphics.Dispose();
            //bmp.MakeTransparent();//注释掉
            bmp.Save(@"f:\test3.gif", ImageFormat.Gif);
            bmp.Dispose();
        }

[qshzf]

up

[活着便精彩]

2楼用的是白色背景啊，透明怎么改呢 晕死了

[starts_2000]

我已经帮你解决了，QQ511029008