Add an image
Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=1698
Printed Date: 08 Sep 24 at 5:45AM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com
Topic: Add an image
Posted By: loul
Subject: Add an image
Date Posted: 04 Jan 11 at 4:16PM
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I am trying to add an image of a captured control to a PDF without saving it to a file first.
Saving the image to a file first does work but my report will have ~30 images of screen captured controls and I would prefer to leave the disc out of it.
Environment:
MSVS 2008
C#
QuickPDF 7.22 ActiveX
Any help would be appreciated.
TIA,
Lou
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Replies:
Posted By: Dimitry
Date Posted: 12 Jan 11 at 10:01AM
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Please check the following functions:
http://www.quickpdflibrary.com/help/quickpdf/AddImageFromStream.php - AddImageFromStream()
http://www.quickpdflibrary.com/help/quickpdf/AddImageFromString.php - AddImageFromString()
http://www.quickpdflibrary.com/help/quickpdf/AddImageFromVariant.php - AddImageFromVariant()
------------- Regards, Dmitry |
Posted By: loul
Date Posted: 12 Jan 11 at 1:58PM
The only one of these that is available in the ActiveX is AddImageFromVariant. I have tried to use this method using an Image and Bitmap types to no avail. C# doesn't have a "variant" type so I may need to do some processing that I have not figured out yet since the time was short and I needed to make something work. I am currently writing the images to temp jpeg files and using the AddImageFromFile. I am not taking as hard of a performance hit as I expected but I would prefer to avoid writing the files to disc and reading them back if possible.
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Dimitry wrote:Posted By: Dimitry
Date Posted: 24 Jan 11 at 8:15PM
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Hope this function imageToByteArray() and the following code sample will help you:
public byte[] imageToByteArray(System.Drawing.Image imageIn)
{ MemoryStream ms = new MemoryStream(); imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp); return ms.ToArray(); } private void button1_Click(object sender, EventArgs e)
{ QuickPDFAX0723.PDFLibrary qp = new QuickPDFAX0723.PDFLibrary(); qp.UnlockKey(" . . . "); // Enter valid trial or commercial license key OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.DefaultExt = "bmp"; openFileDialog1.Filter = "Image files (*.bmp)|*.bmp" ; if (openFileDialog1.ShowDialog() != DialogResult.OK) return; Image image1 = Image.FromFile(openFileDialog1.FileName);
qp.AddImageFromVariant(imageToByteArray(image1), 0); qp.SetOrigin(1);
qp.DrawImage(10, 10, qp.ImageWidth(), qp.ImageHeight()); qp.SaveToFile("sample.pdf"); }
------------- Regards, Dmitry |
Posted By: loul
Date Posted: 24 Jan 11 at 9:19PM
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I pretty much set this aside because writing the images to temp files and using AddImageFromFile got the job done and the performance hit wasn't too bad. But I got a direct reply from AndrewC over the weekend and I started playing with this again this AM. Then combining with the reply from Dimitry I played some more (I was actually working of course) and this is what I managed to get working. This is trimmed a little and there is more code that deals with maintaining the control image's aspect ratio. I also removed some comments to save space. Thanks to AndrewC and Dimitry for heading me in the right direction. // capture an image of a control private Bitmap CaptureControlImage(Control argControl)
{
Bitmap MyImage
= null;
Graphics g1 =
argControl.CreateGraphics();
try
{
MyImage = new Bitmap(argControl.ClientRectangle.Width,
argControl.ClientRectangle.Height,
g1);
Graphics g2 = Graphics.FromImage(MyImage);
IntPtr dc1 = g1.GetHdc();
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0,
argControl.ClientRectangle.Width,
argControl.ClientRectangle.Height,
dc1,
0, 0, 13369376);
g1.ReleaseHdc(dc1);
g2.ReleaseHdc(dc2);
}
catch
{
MyImage = null;
}
return
(MyImage);
}
// convert an image to a byte array
private byte[] GenerateImageBytes(Bitmap argBitMapIn,
ImageFormat argFormat)
{
using
(MemoryStream ms = new MemoryStream())
{
argBitMapIn.Save(ms, argFormat);
return ms.ToArray();
}
}
public bool AddControlImageToPDF(PDFLibrary argPDFLib,
Control argControl
double argLeft,
double argTop,
double argHeight,
double argWidth)
{ // capture the control image
Bitmap img =
CaptureControlImage(this.pictureBox1); if (img == null) return (false); // convert to array of bytes
Byte[] bitBytes
= GenerateImageBytes(img, ImageFormat.Png); //add image to the PDF
int iOK =
argLib.AddImageFromVariant((Byte[])bitBytes, 0);
// if all went well draw the image if (iOK > 0)
argLib.DrawImage(argLeft, argTop, argWidth, argHeight);
return (iOK
> 0);
}
I am sure would are better ways (there always is in programming) but this does the job. I am planning on using the QuickPDF Library for generating more reports for our instruments and for accessing the help PDFs in the future. Thanks again, Lou |