Capturing Desktop and saving image in a Word Document

//Now we will create a word application which can host our //

//word document

Word.Application app = new Word.ApplicationClass();

//I assume that this file is already present at current location. You can replace this code

with simple file creation code which will check whether this file exists or not and if not it

will create that file

object file = @"c:\ScreenDoc.doc";

//Use Reflection to identify the missing values

object miss = System.Reflection.Missing.Value;

object otrue = true;

object ofalse = false;

try

{

// If you are using Microsoft word 11.0 library then use commented code

/* Word.Document doc = app.Documents.Open(ref file,ref miss,ref ofalse,ref

miss,ref miss,ref miss,ref miss,ref miss,ref miss,ref miss,ref miss,ref otrue, ref

miss,ref miss,ref miss,ref miss); */

// If you are using Microsoft word 9.0 library then use following code

Word.Document doc = app.Documents.Open(ref file,ref miss,ref ofalse,ref miss, ref

miss,ref miss,ref miss,ref miss,ref miss,ref miss,ref miss,ref otrue);

//now we specify the start and stop position of the image. We can also place

bookmark and can place an image at that point

object start = 0;

object end = 0;

Word.Range rng = doc.Range(ref start,ref end);

//Now we paste the image which we have on clipboard

rng.Paste();

//Saving the document

doc.Save();

app.Quit(ref otrue,ref miss,ref miss);

MessageBox.Show("Image saved in a document");

}

catch(Exception ex)

{

MessageBox.Show("" + ex.Message);

}

}

private void button1_Click(object sender, System.EventArgs e)

{

CaptureDesk();

}

}

//Now we will write a class which includes GDI32.dll methods

public class GDI32

{

[DllImport("GDI32.dll")]

public static extern bool BitBlt(int hdcDest,int nXDest,int nYDest,

int nWidth,int nHeight,int hdcSrc,

int nXSrc,int nYSrc,int dwRop);

[DllImport("GDI32.dll")]

public static extern int CreateCompatibleBitmap(int hdc,int nWidth,

int nHeight);

[DllImport("GDI32.dll")]

public static extern int CreateCompatibleDC(int hdc);

[DllImport("GDI32.dll")]

public static extern bool DeleteDC(int hdc);

[DllImport("GDI32.dll")]

public static extern bool DeleteObject(int hObject);

[DllImport("GDI32.dll")]

public static extern int GetDeviceCaps(int hdc,int nIndex);

[DllImport("GDI32.dll")]

public static extern int SelectObject(int hdc,int hgdiobj);

}

public class User32

{

[DllImport("User32.dll")]

public static extern int GetDesktopWindow();

[DllImport("User32.dll")]

public static extern int GetWindowDC(int hWnd);

[DllImport("User32.dll")]

public static extern int ReleaseDC(int hWnd,int hDC);

}

public class MethodsForCapture

{

public void CaptureScreen(string fileName,ImageFormat imageFormat)

{

//First we get a desktop window using user32.dll API and then find its //handle

int hdcSrc = User32.GetWindowDC(User32.GetDesktopWindow()),

hdcDest = GDI32.CreateCompatibleDC(hdcSrc),

//Create a BMP

hBitmap = GDI32.CreateCompatibleBitmap(hdcSrc,

GDI32.GetDeviceCaps(hdcSrc,8),GDI32.GetDeviceCaps(hdcSrc,10));

GDI32.SelectObject(hdcDest,hBitmap);

GDI32.BitBlt(hdcDest,0,0,GDI32.GetDeviceCaps(hdcSrc,8),

GDI32.GetDeviceCaps(hdcSrc,10),

hdcSrc,0,0,0x00CC0020);

SaveImageAs(hBitmap,fileName,imageFormat);

Cleanup(hBitmap,hdcSrc,hdcDest);

}

private void Cleanup(int hBitmap,int hdcSrc,int hdcDest)

{

User32.ReleaseDC(User32.GetDesktopWindow(),hdcSrc);

GDI32.DeleteDC(hdcDest);

GDI32.DeleteObject(hBitmap);

}

private void SaveImageAs(int hBitmap,string fileName,ImageFormat imageFormat)

{

Bitmap image =

new Bitmap(Image.FromHbitmap(new IntPtr(hBitmap)),

Image.FromHbitmap(new IntPtr(hBitmap)).Width,

Image.FromHbitmap(new IntPtr(hBitmap)).Height);

image.Save(fileName,imageFormat);

}

}

}