C#怎样打印当前windows窗体？

Question

最好能有源码...

Answer 1

您可以通过这样的方法实现对当前窗口的打印，首先将当前窗口的图像用截屏的方法复制到clipboard，然后在PrintPage方法中将clipboard中的图片打印出来:   
    
  下面的范例通过点击button来调用打印事件。   
    
  首先在类中定义一个System.Drawing.Printing.PrintDocument对象，在button1_click方法中调用SendKeys.Send("%{PRTSC}")，相当于您同时按alt+printscreen键，将当前窗口的图像复制到clipboard，然后调用System.Drawing.Printing.PrintDocument对象的print方法，进行打印。然后在PrintPage方法中将clipboard中的图像打印出来。   
    
  private   System.Drawing.Printing.PrintDocument   printDocument1;   
  private   void   button1_Click(object   sender,   System.EventArgs   e)   
  {   
  SendKeys.Send("%{PRTSC}");   
  Application.DoEvents();//Processes   all   Windows   messages   currently   in   the   message   queue   
  this.printDocument1.Print();   
  }   
    
    
  private   void   printDocument1_PrintPage(object   sender,   System.Drawing.Printing.PrintPageEventArgs   e)   
  {   
  IDataObject   iData   =   Clipboard.GetDataObject   ();   
  Image   img   =   (Image)iData.GetData   (DataFormats.Bitmap);   
  e.Graphics.DrawImage(img,0,0);   
  }   
    
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Answer 2

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Printing;public class Form1 :
         Form
{
    private Button printButton = new Button();
    private PrintDocument printDocument1 = new PrintDocument();    public Form1()
         {
             printButton.Text = "Print Form";
             printButton.Click += new EventHandler(printButton_Click);
             printDocument1.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);
        this.Controls.Add(printButton);
         }    void printButton_Click(object sender, EventArgs e)
         {
             CaptureScreen();
             printDocument1.Print();
         }         Bitmap memoryImage;    private void CaptureScreen()
         {
             Graphics myGraphics = this.CreateGraphics();
             Size s = this.Size;
             memoryImage = new Bitmap(s.Width, s.Height, myGraphics);
             Graphics memoryGraphics = Graphics.FromImage(memoryImage);
             memoryGraphics.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, s);
         }    private void printDocument1_PrintPage(System.Object sender,       
                System.Drawing.Printing.PrintPageEventArgs e)
         {
             e.Graphics.DrawImage(memoryImage, 0, 0);
         }           public static void Main()
         {
             Application.Run(new Form1());
         }
}

Answer 3

Graphics memoryGraphics = Graphics.FromImage(memoryImage); 
memoryGraphics.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, s); 错误:D:\My Documents\Visual Studio Projects\WindowsApplication1\Form1.cs(348): “System.Drawing.Graphics”并不包含对“CopyFromScreen”的定义

Answer 4

原理是行的通,但你的源码并没能 说清楚这个过程,所以实现起来还不行
如:
1.printDocument1是没有赋值的,到this.printDocument1.Print();这里报空值错误    ;
2.//然后在PrintPage方法中将clipboard中的图像打印出来可是printDocument1_PrintPage()这个方法并没有调用到呀?

Answer 5

http://topic.csdn.net/t/20020806/12/926731.html

Answer 6

to luntanyonghu :
***********
4 楼mywindyboy（华剑香）回复于 2002-08-07 16:12:25 得分 0 还差一点，printDocument1_PrintPage怎么和this.printDocument1.Print();建立联系呢？
Top5 楼mywindyboy（华剑香）回复于 2002-08-07 16:30:27 得分 0 哦，知道了***********
我的问题也相似

Answer 7

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Answer 8

private   void   printDocument1_PrintPage(object   sender,   System.Drawing.Printing.PrintPageEventArgs   e)    
  {    
  IDataObject   iData   =   Clipboard.GetDataObject   ();    
  Image   img   =   (Image)iData.GetData   (DataFormats.Bitmap);    
  e.Graphics.DrawImage(img,0,0);    
  }    
这个就ok吧???

Answer 9

怎么打印出来是空白,另这种窗体打印可以把一些button屏蔽掉吗?

Answer 10

//不清楚你究竟是要打印窗体内容,还是直接打印所见的窗体
//下例使用 CopyFromScreen 画窗体
        Bitmap memorybitmap;
        private void button1_Click(object sender, EventArgs e)
        {
            Graphics g = this.CreateGraphics();
            memorybitmap = new Bitmap(this.Size.Width, this.Size.Height,g);
            g = Graphics.FromImage(memorybitmap);
            g.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, this.Size);
            memorybitmap.Save(@"c:\b.bmp");//保存为图片
        }

Answer 11

//加入一个Printdocument对象,直接打印这个图片
private System.Drawing.Printing.PrintDocument printDocument1;
        private void Form_水印_Load(object sender, EventArgs e)
        {
 printDocument1=new System.Drawing.Printing.PrintDocument();
            printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(printDocument1_PrintPage);
                }        void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            e.Graphics.DrawImage(memorybitmap, new Point(0, 0));
        }        Bitmap memorybitmap;
        private void button1_Click(object sender, EventArgs e)
        {
            Graphics g = this.CreateGraphics();
            memorybitmap = new Bitmap(this.Size.Width, this.Size.Height,g);// g);
            //Graphics mg = Graphics.FromImage(memorybitmap);
            g = Graphics.FromImage(memorybitmap);
            g.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, this.Size);
            //memorybitmap.Save(@"c:\b.bmp");
            printDocument1.Print();
        }

Answer 12

.net 2003 
“System.Drawing.Graphics”并不包含对“CopyFromScreen”的定义

Answer 13

.net 2003  
“System.Drawing.Graphics”并不包含对“CopyFromScreen”的定义怎么解决???????????