原文:
http://www.devsource.com/article2/0,1895,2143124,00.asp
首先确保的是你要装上这个组件Microsoft Office Document Imaging 12.0 Type Library
装上office2007默认是不装.(实际我只装了个visio 2007)
装好后添加引用这个com就可以了
然后他在识别英文方面还不错.实际用它识别了一下CSDN的验证码.成功率很低..这类都是需要我们先做一些滤波的动作的.
我把 language 换成中文后识别中文都是报异常.
以下是识别的核心代码
MODI.Document md = new MODI.Document();
md.Create(Directory.GetCurrentDirectory() + "\\SampleForOCR.tiff");
md.OCR(MODI.MiLANGUAGES.miLANG_ENGLISH, true, true);
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
MODI.Image image = (MODI.Image)md.Images[0];
MODI.Layout layout = image.Layout;
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
MODI.Word word;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < layout.Words.Count;i++ )
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
word = (MODI.Word)layout.Words[i];
sb.Append(word.Text);
}
sb.ToString就可以得到了
图片转成 tiff
Bitmap bitmap = new Bitmap(100, 100);
bitmap.Save("somefilename", ImageFormat.Tiff);
如何进行截屏呢?
拷屏.先把整个屏幕的图像拷过来(其它地方也会用到这个.比如做一个操作动作的外挂等)
Graphics g = Graphics.FromImage(m_WindowDlg.m_objBitmap);
// Copy the screen into the bitmap object.
g.CopyFromScreen(0, 0, 0, 0, new Size(w, h));
指定区域是利用
另一个窗口来的..把这个窗口的透明属性opacity设为100%这样人家就看不到了.
然后利用 MouseDown 画出我们截屏的范围 和 mouseUP事件.
mouseUP后引发一个完成的事件.并通知座标大小
主要代码
// Make sure we clicked the mouse button and
// have a starting coordinate.
if (m_nStartX != -1)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
// Get the graphcis object from this window.
Graphics g = Graphics.FromHwnd(Handle);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// Check to see if we need to restore the
// screen from a previous rectangle draw.
if (m_nLastX != -1)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
// Create a rectangle with which to clip.
// Note that we are 3 pixels to the left
// and 3 pixels to the right so that we
// can take the width of the line into
// account.
Rectangle rc = new Rectangle(m_nLastX-3, m_nLastY-3,
m_nLastWidth+6, m_nLastHeight+6);
g.SetClip(rc);
g.DrawImage(m_objBitmap, 0, 0);
g.ResetClip();
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// Here we set some local variables just
// in case we have to swap the values.
int nStartX = m_nStartX;
int nStartY = m_nStartY;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// Get and record our current mouse position.
int nEndX = e.X;
int nEndY = e.Y;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// Calculate width and height.
int nWidth = Math.Abs(nStartX - nEndX);
int nHeight = Math.Abs(nStartY - nEndY);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// We may need to swap values if user went
// left from the start position.
if (nEndX < nStartX)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
int i = nStartX;
nStartX = nEndX;
nEndX = i;
}
// We may need to swap values if user went
// up from the start position.
if (nEndY < nStartY)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
int i = nStartY;
nStartY = nEndY;
nEndY = i;
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// Draw the rectangle.
g.DrawRectangle(new Pen(Color.Black, 3),
nStartX, nStartY, nWidth, nHeight);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
// Record the operation so that we can restore
// when the mouse moves, and also give values
// to the EndCapture method.
m_nLastX = nStartX;
m_nLastY = nStartY;
m_nLastWidth = nWidth;
m_nLastHeight = nHeight;
g.DrawRectangle(new Pen(Color.Red, 1), 这个改成红色一个像素看起来更舒服,这个函数是鼠标一移动都会被调用的.
他的这个程序.还做了截屏.想用C#做截屏的也可以看一下它是什么做的.
附件
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