在图片上写字 （C#）

下面的代码实现了从剪贴板取出图片，然后写上字，保存到文件

Image bmap;

IDataObject data = System.Windows.Forms.Clipboard.GetDataObject();

bmap = (Image)(data.GetData(typeof(System.Drawing.Bitmap)));

Graphics g = Graphics.FromImage(bmap);

SolidBrush drawBrush = new SolidBrush(Color.Red);

Font drawFont = new Font("Arial", 10, FontStyle.Bold, GraphicsUnit.Millimeter);

int xPos = bmap.Height - ( bmap.Height-25 );

int yPos = 3;

g.DrawString ("zydzydyzydydydyyydydy", drawFont, drawBrush, xPos, yPos);

string sPicPath = "d:\\filename.jpg";

string sPreFix = "d:\\xxx";

Image smBmap ;

smBmap = bmap.GetThumbnailImage(bmap.Width, bmap.Height, null, System.IntPtr.Zero);

smBmap.Save(sPicPath, System.Drawing.Imaging.ImageFormat.Jpeg);

bmap.Save(sPreFix + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

bmap = null;

smBmap = null;