C# winform如何打印图片？

Question

C# winform如何打印图片？求指点

Answer 1

http://hi.baidu.com/zhaogaoyan8/blog/item/d50fbf9a3f66c0bdc9eaf4c7.html

Answer 2

[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]//应用API函数
        private static extern bool BitBlt(
        IntPtr hdcDest, // 目标设备的句柄 
        int nXDest, // 目标对象的左上角的X坐标 
        int nYDest, // 目标对象的左上角的X坐标 
        int nWidth, // 目标对象的矩形的宽度 
        int nHeight, // 目标对象的矩形的长度 
        IntPtr hdcSrc, // 源设备的句柄 
        int nXSrc, // 源对象的左上角的X坐标 
        int nYSrc, // 源对象的左上角的X坐标 
        System.Int32 dwRop // 光栅的操作值 
        );        private void 打印照片列表ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Bitmap bmp = new Bitmap(1024,1100, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
            //新建绘制到bmp
            Graphics g = Graphics.FromImage(bmp);
            g.Clear(Color.White);//上底色
            g.DrawString(cmbJS.Text, this.Font,Brushes.Black, new PointF(975, 1950));
            int i = 0, Y = 50, X = 79;
            foreach (Control c in panel4.Controls) //这个地方遍历图片 
            {
                if (c is PictureBox)//发现是图片
                {
                    if (i % 4 == 0)// 因为我要打印多张 所以这个地方我要 4张图片一行// 如果你只打印一张 此处不需要
                    {
                        Y = 50 + 170 * (i / 4);
                        X = 79;
                    }
                    else
                    {
                        X =79 + (i % 4) * 170;
                    }
                    i++;
                    PictureBox pb = (PictureBox)c;
                    //绘制包含的图象
                    g.DrawImage(pb.Image,X,Y,120,160);
                }
            }
            //panel1外的pictureBox输出,要保存写成bmp.Save(路径，格式);            g.Dispose();
            Graphics graphic = panel4.CreateGraphics();
            Size s = panel4.Size;
            // memImage = new Bitmap(s.Width,s.Height, graphic);
            memImage = new Bitmap(s.Width,1024, graphic);
            Graphics memGraphic = Graphics.FromImage(memImage);
            IntPtr dc1 = graphic.GetHdc();
            IntPtr dc2 = memGraphic.GetHdc();
         //   BitBlt(dc2, 0, 0, panel4.ClientRectangle.Width, panel4.ClientRectangle.Height,dc1, 0, 0, 13369376);
            BitBlt(dc2, 0, 0, panel4.ClientRectangle.Width, 1024, dc1, 0, 0, 13369376);
            //Clone       the   bitmap   so   we   can   dispose   it.     
            print_image = (Image)memImage.Clone();
            graphic.ReleaseHdc(dc1);
            memGraphic.ReleaseHdc(dc2);
            graphic.Dispose();
            memGraphic.Dispose();
            memImage.Dispose();
            print_image = (Image)bmp.Clone();            PrintPreviewDialog dlg = new PrintPreviewDialog();
            dlg.Width = 800;
            dlg.Height = 600;
            dlg.Document = printDocument1;
            if (dlg.ShowDialog() == DialogResult.OK)
                printDocument1.Print();   
        }        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            int Row = 100; 
            e.Graphics.DrawImage(print_image, 0, 0);
        }你试试看吧 
需要引用
using System.Runtime.InteropServices;
和添加printDocument控件