Posts Tagged Word

Capture an Image of the Desktop, Specific Screen or Portion of a Screen with C#

So today is my birthday. It has been a wild ride this last 46 years. Lets hope that things continue to get better.

So this is my entire class for capturing screens and desktop appearance to an image file or to print them. I use this class quite often in my error management, saving or emailing the output should errors occur so I can get a good idea of what was going on at the time an error occurs. Why? Because often end users or business analysts, though they are trying their best, sometimes can’t describe in detail how to reproduce what occurred. I suggest using this in conjunction with a logging class as well so that you can replicate the steps needed. The image file is also very handy in reconstructing what a user was or was not doing which, as a coder, can literally save your ass on occasion. So here it is. It is well commented and pretty straight forward.

using System.Windows.Forms;
using System;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;

public class clsScreenCapture
{
    private System.Drawing.Printing.PrintDocument Pd = new System.Drawing.Printing.PrintDocument();
    private PictureBox PicForm = new PictureBox();

    /// Creates an Image object containing a screen shot of the entire desktop
    public Image CaptureScreen()
    {
        return CaptureWindow(User32.GetDesktopWindow());
    } //CaptureScreen
    /// Creates an Image object containing a screen shot of a specific window
    public Image CaptureWindow(IntPtr handle)
    {
        int SRCCOPY = 0xCC0020;
        // get te hDC of the target window
        IntPtr hdcSrc = User32.GetWindowDC(handle);
        // get the size
        User32.RECT windowRect = new User32.RECT();
        User32.GetWindowRect(handle, ref windowRect);
        int width = windowRect.right – windowRect.left;
        int height = windowRect.bottom – windowRect.top;
        // create a device context we can copy to
        IntPtr hdcDest = GDI32.CreateCompatibleDC(hdcSrc);
        // create a bitmap we can copy it to,
        // using GetDeviceCaps to get the width/height
        IntPtr hBitmap = GDI32.CreateCompatibleBitmap(hdcSrc, width, height);
        // select the bitmap object
        IntPtr hOld = GDI32.SelectObject(hdcDest, hBitmap);
        // bitblt over
        GDI32.BitBlt(hdcDest, 0, 0, width, height, hdcSrc, 0, 0, SRCCOPY);
        // restore selection
        GDI32.SelectObject(hdcDest, hOld);
        // clean up
        GDI32.DeleteDC(hdcDest);
        User32.ReleaseDC(handle, hdcSrc);

        // get a .NET image object for it
        Image img = Image.FromHbitmap(hBitmap);
        // free up the Bitmap object
        GDI32.DeleteObject(hBitmap);

        return img;
    } //CaptureWindow
    /// Captures a screen shot of a specific window, and saves it to a file
    public void CaptureWindowToFile(IntPtr handle, string filename, ImageFormat format)
    {
        Image img = CaptureWindow(handle);
        img.Save(filename, format);
    } //CaptureWindowToFile
    /// Captures a screen shot of a specific window, and saves it to a file
    public void CaptureWindowToPrinter(Form mfForm, ImageFormat format)
    {
        // Dim img As Image = CaptureScreen()

        Image img = CaptureWindow(mfForm.Handle);
        try
        {
            PicForm.Image = img;
            if (MessageBox.Show(“Press Yes to Print or No to Copy to your Clipboard (‘No’ will allow pasting into an email or Word document etc).”, “Print or Copy to Clipboard?”, MessageBoxButtons.YesNo) == DialogResult.Yes)
            {
                Pd.Print();
            }
            else
            {
                Clipboard.SetDataObject(img, true);
            }
        }
        catch (Exception ex)
        {
            string a = “vfdgsfg”;
        }
    } //CaptureWindowToPrinter
    private void pd_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {
        //—————————————————————
        // this procedure handles events raised by the printer object pd
        //—————————————————————
        e.Graphics.DrawImageUnscaled(PicForm.Image, 0, 0); //send image to printer – upper left position

        e.HasMorePages = false; //this is the last page to print

    }

    /// Captures a screen shot of the entire desktop, and saves it to a file
    public void CaptureScreenToFile(string filename, ImageFormat format)
    {
        Image img = CaptureScreen();
        img.Save(filename, format);
    } //CaptureScreenToFile
    public Bitmap CaptureDeskTopRectangle(Rectangle CapRect, int CapRectWidth, int CapRectHeight)
    {
        /// Returns BitMap of the region of the desktop, similar to CaptureWindow, but can be used to
        /// create a snapshot of the desktop when no handle is present, by passing in a rectangle
        /// Grabs snapshot of entire desktop, then crops it using the passed in rectangle’s coordinates
        clsScreenCapture SC = new clsScreenCapture();
        Bitmap bmpImage = new Bitmap(SC.CaptureScreen());
        Bitmap bmpCrop = new Bitmap(CapRectWidth, CapRectHeight, bmpImage.PixelFormat);
        Rectangle recCrop = new Rectangle(CapRect.X, CapRect.Y, CapRectWidth, CapRectHeight);
        Graphics gphCrop = Graphics.FromImage(bmpCrop);
        Rectangle recDest = new Rectangle(0, 0, CapRectWidth, CapRectHeight);
        gphCrop.DrawImage(bmpImage, recDest, recCrop.X, recCrop.Y, recCrop.Width, recCrop.Height, GraphicsUnit.Pixel);
        return bmpCrop;
    }
    /// Helper class containing Gdi32 API functions
    private class GDI32
    {
        public int SRCCOPY = 0xCC0020;
        // BitBlt dwRop parameter
        [System.Runtime.InteropServices.DllImport(“gdi32.dll”, EntryPoint=”BitBlt”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern Int32 BitBlt(IntPtr hDestDC, Int32 x, Int32 y, Int32 nWidth, Int32 nHeight, IntPtr hSrcDC, Int32 xSrc, Int32 ySrc, Int32 dwRop);

        [System.Runtime.InteropServices.DllImport(“gdi32.dll”, EntryPoint=”CreateCompatibleBitmap”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern IntPtr CreateCompatibleBitmap(IntPtr hdc, Int32 nWidth, Int32 nHeight);

        [System.Runtime.InteropServices.DllImport(“gdi32.dll”, EntryPoint=”CreateCompatibleDC”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern IntPtr CreateCompatibleDC(IntPtr hdc);

        [System.Runtime.InteropServices.DllImport(“gdi32.dll”, EntryPoint=”DeleteDC”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern Int32 DeleteDC(IntPtr hdc);

        [System.Runtime.InteropServices.DllImport(“gdi32.dll”, EntryPoint=”DeleteObject”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern Int32 DeleteObject(IntPtr hObject);

        [System.Runtime.InteropServices.DllImport(“gdi32.dll”, EntryPoint=”SelectObject”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hObject);
    } //GDI32
    /// Helper class containing User32 API functions
    public class User32
    {
        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        } //RECT

        [System.Runtime.InteropServices.DllImport(“user32.dll”, EntryPoint=”GetDesktopWindow”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern IntPtr GetDesktopWindow();

        [System.Runtime.InteropServices.DllImport(“user32.dll”, EntryPoint=”GetWindowDC”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern IntPtr GetWindowDC(IntPtr hwnd);

        [System.Runtime.InteropServices.DllImport(“user32.dll”, EntryPoint=”ReleaseDC”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern Int32 ReleaseDC(IntPtr hwnd, IntPtr hdc);

        [System.Runtime.InteropServices.DllImport(“user32.dll”, EntryPoint=”GetWindowRect”, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
        public static extern Int32 GetWindowRect(IntPtr hwnd, ref RECT lpRect);

    } //User32

    public clsScreenCapture()
    {
        SubscribeToEvents();
    }

// event handler wireups:
    private bool EventsSubscribed = false;
    private void SubscribeToEvents()
    {
        if (EventsSubscribed)
            return;
        else
            EventsSubscribed = true;

        Pd.PrintPage += pd_PrintPage;
    }

}


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Write DataTable to an MS Word Table Efficiently with C# using a Dynamic Type

This is a C# adaptation of the code I wrote to write a datatable to a Microsoft Word document table for vb.net . But that doesn’t really begin to tell the story here. In vb.net we have been accustomed to being allowed to leave parameters empty when automating the creation of a table in Microsoft Word. C# has not permitted me that luxury which to be honest is probably a better code practice. So prepare to meet the Type.Missing object! In addition the default item that we learned to love/hate in Visual Basic for Applications (VBA) code years ago also is not used in C#. Finally in declaring the range object for the table it became an opportunity to use the new dynamic reference type keyword, which was designed for such situations. Check out this video on the subject which is quite excellent.

http://channel9.msdn.com/Shows/Going+Deep/Inside-C-40-dynamic-type-optional-parameters-more-COM-friendly/player?w=512&h=288

For these reasons you will see key differences between the two sets of code. Don’t forget to import Microsoft Word as a COM reference and do your import statements. As always feel free to comment or email. Have a great day!

using Office = Microsoft.Office.Core;
using Word = Microsoft.Office.Interop.Word;

public void CreateWordTableWithDataTable(DataTable dt)
        {
            int RowCount = dt.Rows.Count; int ColumnCount = dt.Columns.Count;
            Object[,] DataArray = new object[RowCount + 1, ColumnCount + 1];
            //int RowCount = 0; int ColumnCount = 0;
            int r = 0;
            for (int c = 0; c <= ColumnCount – 1; c++)
            {
                DataArray[r, c] = dt.Columns[c].ColumnName;
                for (r = 0; r <= RowCount – 1; r++)
                {
                    DataArray[r, c] = dt.Rows[r][c];
                } //end row loop
            } //end column loop

            Word.Document oDoc = new Word.Document();
            oDoc.Application.Visible = true;
            oDoc.PageSetup.Orientation = Word.WdOrientation.wdOrientLandscape;
           
            dynamic oRange = oDoc.Content.Application.Selection.Range;
            String oTemp = “”;
            for (r = 0; r <= RowCount – 1; r++)
            {
                for (int c = 0; c <= ColumnCount – 1; c++)
                {
                    oTemp = oTemp + DataArray[r, c] + “\t”;
                  
                }
            }

oRange.Text = oTemp;
           
object Separator = Word.WdTableFieldSeparator.wdSeparateByTabs;
object Format = Word.WdTableFormat.wdTableFormatWeb1;
object ApplyBorders = true;
object AutoFit = true;

object AutoFitBehavior = Word.WdAutoFitBehavior.wdAutoFitContent;
            oRange.ConvertToTable(ref Separator,
        ref RowCount, ref ColumnCount, Type.Missing, ref Format,
        ref ApplyBorders, Type.Missing, Type.Missing, Type.Missing,
         Type.Missing, Type.Missing, Type.Missing,
         Type.Missing, ref AutoFit, ref AutoFitBehavior,
         Type.Missing);
           
            oRange.Select();
            oDoc.Application.Selection.Tables[1].Select();
            oDoc.Application.Selection.Tables[1].Rows.AllowBreakAcrossPages = 0;
            oDoc.Application.Selection.Tables[1].Rows.Alignment = 0;
            oDoc.Application.Selection.Tables[1].Rows[1].Select();
            oDoc.Application.Selection.InsertRowsAbove(1);
            oDoc.Application.Selection.Tables[1].Rows[1].Select();

            //gotta do the header row manually
            for (int c = 0; c <= ColumnCount – 1; c++)
            {
               oDoc.Application.Selection.Tables[1].Cell(1, c + 1).Range.Text = dt.Columns[c].ColumnName;
            }

            oDoc.Application.Selection.Tables[1].Rows[1].Select();
            oDoc.Application.Selection.Cells.VerticalAlignment = Word.WdCellVerticalAlignment.wdCellAlignVerticalCenter;
                      
                    }

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Tag Generator for Live Writer: Problems and Workarounds

One topic of emails and questions I receive are in relation to the Tag Generator, a plugin available for download, for Live Writer, a blog writing tool.

First some history. The Tag Generator was originally written over two years ago to provide myself a way to automatically generate tags for my blog posts. I got tired of doing it manually. It worked well for me so I decided to create a plugin that others could use. It uses the Microsoft Word thesaurus to verify words in the blog and their meanings. It isn’t perfect but its better than nothing. Obviously some of you agreed as over 14,000 downloads took place. However over the last couple of years, for various reasons, no work was done on this plugin and a new version of Live Writer was released. While the Tag Generator plugin still works, it does not support the options feature for plugins that came out with this version of Live Writer. In addition, as you all know, Windows Live Spaces no longer supports blogging, instead choosing to support the Word Press blogging resources. Generating these tags are obviously pointless.

You might wonder to yourself why I just don’t sit down and rewrite the plugin and be done with it. Basically it is because I am too busy at the moment to do so. I will at some point I promise. I apologize to those of you who have been frustrated. But this blog post today is to tell you how I still make use of this plugin and how  you can too.

First after you are done writing your post, right click on your document and click select all.

image

Then click “Insert” in the Live Writer toolbar and click “Generate Tags”.

image

Click the option or options you wish to generate the tags for and click the button “Generate”

image

Add, modify or delete the tags you wish…..but do not click the Insert button at the bottom! Instead select all of the words in the “Tags” text box and copy them. Then in the Set tags text box at the top of Live Writer, paste these words in their textbox.

image

Now your post will be tag ready for publication whenever you choose!

I am sorry for the hassle. I still find this plugin extremely useful for me and I promise I will get around to redoing it for you at some point. But this works fine for me for now and hopefully will for you as well.

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Write Microsoft Word Document Header and Footer with C#

Again I am rewriting some of the more popular entries in this blog as C#. It’s good exercise for me and good for you because you get the code another way. Well at least that’s the theory! This entry writes to the header and footer of a document in Microsoft Word The vb.net version was here. The only downside to all of this is that this is only tested against Office 2010. The old version I had Office 2000, XP and 2003 on my machine. Essentially however it is the same code. If you have any questions of course please feel free to leave a comment or email me.

public void WriteHeaderandFooterinWordDocument()
{
Word.Document oDoc = new Word.Document();
oDoc.Application.Visible = true;
oDoc.Content.Application.ActiveWindow.ActivePane.View.SeekView = Word.WdSeekView.wdSeekCurrentPageHeader;// = Convert.ToInt32(Word.WdSeekView.wdSeekCurrentPageHeader);
oDoc.Content.Application.Selection.TypeText(“Martens “);
oDoc.Content.Application.Selection.Fields.Add(oDoc.Content.Application.Selection.Range, Word.WdFieldType.wdFieldEmpty, “PAGE”);
oDoc.Content.Application.ActiveWindow.ActivePane.View.SeekView = Word.WdSeekView.wdSeekMainDocument;
oDoc.Content.Application.ActiveWindow.ActivePane.View.SeekView = Word.WdSeekView.wdSeekCurrentPageFooter;
oDoc.Content.Application.Selection.TypeText(“Martens”);
oDoc.Content.Application.ActiveWindow.ActivePane.View.SeekView = Word.WdSeekView.wdSeekMainDocument;
}

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