Hi All, How to select a circular area from an image in .NET. regards Suresh .. ...more >>

I'm trying to create a transparent line control. That is a control that simply draws a line from upper left to lower right of it's rectangle. Here's the catch, I want the control to be transparent so I can place this control on top of other controls (example, drawing a line between two picture ...more >>

Is there a way to make drawing of Metafile (WMF) anti-aliased? When I draw any metafile I get jagged edges for lines or circles. I tried using: Graphics.InterpolationMode Graphics.PixelOffsetMode Graphics.SmoothingMode and they don't do anything for metafiles. They do work when I use drawlin...more >>

Hi First - I'm not a image expert so please forgive me if this sounds like a stupid question Due to another programmer quiting in the middle of a project, I've inherited his project to finish. It's a ASP.NET app in which the user can upload an image (*.jpg, *.gif, *.png) and it gets saved t...more >>

Hi, is there a way to manipulate the header of the JPEG-file before writing it to disc? I need to fill the comment of the JPEG file - do I really have to parse back and insert it into the file? I get raw data from IEEE 1394-Camera, grab a specific frame, do some calculations and then I'v...more >>

I have a screen saver application that is running well, but after a period of time I get "The object is currently in use elsewhere" exception. The stack is as follows: at System.Drawing.Graphics.EndContainer(GraphicsContainer container) at System.Windows.Forms.DibGraphicsBufferManage...more >>

Is it possible to set the pev.HasMorePages = True outside oPrintDoc_PrintPage() ? Tried setting to True in sub LS_PAR7310() but does not do a page eject. Any suggestions other than placing the contents of sub LS_PAR7310 in PrintPage? Thks in advance GW Private Sub oPrintDoc_PrintPage(B...more >>

Is there a way to specifically draw small icons in dotnet? or do I have to use the Win32 API?...more >>

(VB, 1.1 Framework) In the PrintPage event handler I retrieve the printer margins using GetHardMargins as been discussed in several other posts. This works fine and I'm able to do drawing to the Graphics object. When previewing everything looks fine (don't need the hard margins when doing the...more >>

Is there a better discussion group for DirectX? Its not in the SDK section. I have a matrix where I have displayed my landscape. I figured out how to look left and right by doing a Matrix multiply and rotating the landscape around the up/down axis. Now I wish to look up and down. I assume I a...more >>

I have a array of point structures that make up a number of line segments. Using DrawLines, I want to draw two lines, one on each side of the points, that are equally offset from one another regardless of the angle of the line segments. I’m sure there’s got to be a fairly simple algorithm I can ...more >>

Hello, I have created a complete PrintDocument and need to create an image from it. How is this done? e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality e.Graphics.DrawString(Line1.Text, FontLine1, TheBrush, Thelocation1, 390 + yPos, AStringFormat) e.Graphics.DrawString(Line2.T...more >>

I'm trying to use the DrawText() method to draw some very long string text on the Panel with AutoScroll enabled. However, for some unknown reasons, I could not trigger the ScrollBar to show up. Here is the simplicied section of drawing code: private void panel_Paint(object sender, System.Wi...more >>

"You can't wrap a Graphics around an indexed-format image. [...]" So, there is no way to paint specifying palette index. You are forced to paint by RGB value. Why this limitation? ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>OFvyPcbZbUWnMgyzU7Tdhg=...more >>

Hello everybody... I am trying to apply some parts of the WinXP skins in panel controls. I am using the Uxtheme wrapper which you can download from www.codeproject.com and it is good. If I want to do what I explained, I have to pass a string to a function which makes the drawing. The string ref...more >>

Hi there, I have developed an OCR application using Java Advanced imaging API's and Back propagation neural network. Now I need to write an application on microsoft platform which should be able to capture images from video/web camera, extract text from it and recognize the text . In msdn I fo...more >>

Has anyone had any success in using a graphics pen to draw overlapping straight lines using the GDI+ DrawLines Method? If so, how did you get them to overlap without occlusion? Please note: DrawLines is not the same as DrawLine -jc...more >>

How would I determine when a user ran their mouse over a GDI+ line that I have drawn on a form? The intent is to pop up a window displaying information regarding the line when the user moves their mouse over it. ...more >>

Hi, I need to create a few linecaps using the CustomLineCap class, just wondering if anyone has come across and examples on how to actually do it... thanks, Kieron ...more >>

Is there any possibility to save Bitmap as JPG, howeve with better quality than allows the following code ... encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality,100) foreach( ImageCodecInfo encoder in encoders ) if( encoder.MimeType == "image/jpeg" img.S...more >>

Has anybody got code to round corners of usercontrols and group boxes please ? ...more >>

For example, how do I convert a GIF to a JPG (and vice versa)? Also, If I use GetThumbnailImage on a GIF file and save the resulting thumbnail to a file, is that thumbnail a GIF still or does it become a bitmap or some other type? ...more >>

Is there any way to get information on image resulution, however without creating image data buffer in memory I mean that I would like to read this information from som header or sth. like that, and not by loading the bitmap and getting its Width and Height property... I need to check resoluti...more >>

Hello, I need to be able to derive which colours, and their percentages, that make up a solid color image (a square) for a chemical analysis application I am writing in VB.NET. For example, a pink square. I need to be able to determine which colors are being used (red and white in this case) and w...more >>

Hi, I'm developing a webservice [webmethod] that gets a byte array that contains Points. I create a bitmap and graphics object to handle the drawing. I decode the byte array to points and write them to the bitmap. Then I want to save the Bitmap to disk with Save, but I allways get the ...more >>

OK, I'm trying to draw to an image and then later BitBlt that image to a Graphics. I'm able to DrawImage() with the "saved" image, but BitBlt'ing results in Black. I've seen this posted a number of times, but for the life of me, I still can't get my head around what I'm doing wrong...slightly co...more >>

Is it possible to "crop" image but using only one memory buffer currently I do craete a copy of the region that should remai after crop operation and dispose the original bitmap However, the images I deal with are huge (yes, very huge), and memory allocated for process reach almost 500MB. Thi...more >>

I currently have a server side image control with an image associated with it. When the user clicks a button I want to be able to draw a small black box on the image. Here is the code I am using for the button click (in VB.Net) Dim objBitMap As Bitmap Dim objGraphics As Graphics objBit...more >>

Does GDI+ use hardware acceleration? I have heard that, for the most part, it does not. ...more >>

Thanks Bob. Your sites have been very helpful. Regarding drawing text character partially, I'm not too sure how to use the method you suggest? It would be nice if you could give me some example on how to calculate the position of the text, or using a clipping region? Thanks. "Bob Powell [MV...more >>

If I draw an image to a larger rectangle than its source I find the resulting image : 1. to not fill the entire destination rectangle (some lines of pixels at the right and bottom end stay untouched) 2. to be off-center (the whole image seems to be shifted a bit to the top and left) Drawi...more >>