I want to develop custom scroll bar and use it in place of the existing scroll bar on controls e.g. DataGridView, ListBox. Any sample/demo that shows this feature?...more >>

Hi experts: I got an image from the image capturing device which is 16 bit bitmap with big endian. I am using C# to get this image and when I try to display it, I got blur color image which is not right, it is supposed to be black and white image as I did for 8 bit bitmap image. Following is...more >>

Hello, I've been reading that OpenType fonts (specifically those from Adobe) are not supported in .NET or by GDI+. Does anyone know if .NET v2.0 will support these fonts? Thank you, Ben ...more >>

Hi, I'm trying to show a hover/selected effect arround the objects I'm drawing. Everything is working fine for the rest of my shapes but I'm having troubles with my lines. Heres my code: Draw(Graphics g){ ...... using(Pen P = new Pen(this.LineColour,this.LineWidth)){ P.StartCap =...more >>

Hi everybody, my problem is as follows : VS.NET 2003 C++ MFC Application I try to figure out a screen size of a string by means of the GetTextExtentPoint32(HDC,LPCTSTR,int,LPSIZE). Surprisingly for me, this function reports the same size for the string displayed with different font sizes...more >>

Hi, i want to draw a piece of text with some words in bold. does anyone has an idea how to do this using the Graphics object? (i want to draw the piece of text to an PrintDocument) thx Dries...more >>

(I think I know the basics of Dot Net graphics. Please excuse me if I don't have all the terminology down yet.) My problem is this. I'm using DrawPolygon to create a number of simple shapes including squares and triangles. The edges of these shapes conform to the limits of the object tha...more >>

Hi all, using VB.NET 2003 Trying to zoom in on a bmp that is in a picturebox in the click event? Can someone please help! I am able to get the mouse codinates with the mouse move event below. This code doesn't work correctly, forgot where I got it from so sorry for not listing the pe...more >>

Hi guys, I am drawing an image on a graphics object: Graphics.DrawImage(Bitmap, RectangleDestination , RectangleSource , GraphicsUnit.Pixel) I would like that: 1) the whole drawn image be partially transparent, let's say 65% and, at the same time, 2) for just 1 color (say color.white...more >>

Hello everybody, I am C#/.NET newbie. I have been tasked to write a graphics application using C#. The application needs to visualize an image that is narrow and very long. Typically images have width=1024 pixel and height= 40000 pixel. Of course is impossible to completely visualize such an ...more >>

Howdy All, I have an object model that stores images for use in a graphics application. Rather than reading the images and keeping them in memory, which has a HUGE footprint, I instead read the file into an array of bytes, convert the array of bytes into a memory stream, then use the Image.Fr...more >>

Hi: We have a customer that has provided a custom true type font that they want us to use when printing documents in the application we are building for them. This font prints just fine from most Windows applications such as wordpad, and also from a test app that uses the Win32 print API. Howeve...more >>

I'm curious how the framework handles writing a bitmap out in jpeg format when I do not specify a quality level. Does anyone know what compression level it uses in code like this: Bitmap bmp = new Bitmap("test.bmp"); bmp.Save("test.jpg", ImageFormat.Jpeg); I do know how to use EncoderPar...more >>

I have a Panel with a Label. Any Graphics drawn is always below the Label. How do I get my Graphics to go over the Forms Control? I see a BringToFront method for the Label class but it doesn't look like the appropriate one to use. Thanks. ...more >>

Is there any way to fill a GraphicsPath or Region with a color, ignoring the image beneath? Hmm, that's a little confusing, how about... Can I instruct the Graphics object to avoid overlaying semi-transparent colors? I would like to actually draw Color.Transparent, or a semi-transparent color ...more >>

I am trying to capture an image from a picturebox pb1, the first step in creating a print routine. 'Dim g1 As Graphics = Me.CreateGraphics Dim g1 As Graphics = Graphics.FromImage(pb1.Image) Dim MyImage As New Bitmap(Me.pb1.Width, Me.pb1.Height, g1) MyImage.Save("c:\abc.bmp") If I us...more >>

Anyone? Bueller? Seriously, any way to capture output from a browser control and render the stream to an image? TIA....more >>

Is it possible to include a ICC profile when saving a image? Im having some troubles with colors when opening a image, changing something and then saving the image to a new output image... wich results in that i have to open the image in photoshop and apply the ICC profile... If anyone have a...more >>

I have asp.net code using C# that will convert tif file into jpg and then it display them. The program works on my machine and Dev machine with Window XP professional. When I deploy the program on test machine (window 2003 server) I get error: Argument Exception Invalid parameter used" T...more >>

Dear Sir, I want to set the drawing area and impliment scrollbars in it. please tell me the basics of setting a drawing area. ...more >>

I am using some COM interface to create some HFONT. Trouble is, the font created with this COM interface should be release with this COM intrface. And I don't see how I could make it work nicely with my ManagedC++ wrapper. The solution I though of is: when the COM interface create this refer...more >>

I'am using C# and I would like to use the INLangFontLink interface: http://msdn.microsoft.com/library/default.asp?url=/workshop/misc/mlang/reference/ifaces/imlangfontlink/imlangfontlink.asp I tryed to add a COM interface reference to the project but the add reference dialog box didn't show me ...more >>

Hi I would like a simple scrolling text buffer consisting of the last N (say 10) lines of a text stream on the main form of little windows forms test app I need to knock up. Is there a quick way of making a multiline textbox into a scrolling text buffer with a fixed number of lines histo...more >>

Hi, I am drawing an image, stretched, with interpolation set to NearestNeighbor. I want to be able to count the pixels and all. There seems to be a bug in the scaling in this interpolation mode. I actually think it occurs in all modes, but it is best visible in this mode. Somebody else has ...more >>

I just found out that if you have a project that you have named with a space such as "My Project", getting embedded resources doesn't work if you are getting them with GetManifestResourceStream(Name) method. If I change "My Project" to "MyProject", it works fine. -- Dennis in Houston...more >>

Hi All Greetings to all of you. I am a newbie. I am trying to build a application in C# in which I try to Overlay Bitmap over Video. I am able to display the bitmap onto video. But my problem arises when have to Display some rapidly changing Bitmap onto screen(Consider want to Display time ...more >>

Hi, I am trying to convert a group of wmf files to gif files. Easy you'd think? I'm using the following code: Image img = Image.FromFile (this.tbxFilename.Text); string filename = this.tbxFilename.Text.Replace ("wmf", "gif"); img.Save (filename, ImageFormat.Gif); When I look at t...more >>

I have a control derived from Label and I added a few more properties. The new control is located in (Added to) a Panel. I want to draw this control as part of my Panel's Paint event, so as to share the same clipping and double-buffering characteristics. How can I change the Graphics obje...more >>

Hello all, I have a program using VB.Net that goes that cycles through multipage Tiff images and automatically prints them out. Recently a problem was discovered by a client in which it was found that for some of the Tiffs only the first page printed. Looking at the code, I discovered tha...more >>

Sir I want to fill colors in diffrent sorounding (and or overlaping) shapes over particular selected shape with help of mouse in vb.net over Picturebox i.e color should fill only inside the desired area/shape rather than the whole picturebox. ...more >>

HI all, I have a application that places a number of strings onto a picturebox using a graphics handle to the picturebox, using the following code: Dim g As Graphics = PictureBox1.CreateGraphics Dim bar As New clsBarCode128 Try Dim fnt As New Font("Arial", 18, FontStyle.Regular, Grap...more >>

How I can draw a generic control on the graphical object of printing, in the same way in which it is visualized on the screen? I cannot change the "graphics" in the method "onPaint" and, if I try to call the created method of the onPaint using a new one "paintEventArgs" on the "graphics" of pri...more >>

Trying to print server side in ASP.net. Set up a PrinterSettings object as follows: PrintDocument pd = new PrintDocument(); pd.PrinterSettings.PrinterName = "\\blah\blah"; pd.PrinterSettings. etc... pd.IsValid() returns false when deployed to server...?! Using impersonation in the sit...more >>

I get a Drawing.Image back from a web server. I don't know if it is a *.png, *.jpg, or *.bmp ImageFormat. I want to save it to a file in its origional format with Image.Save("c:\test.???"). How can I get either the ImageFormat for this object or appropriate file extension? Thanks, Ri...more >>

Hi, everybody! I need to draw/build EMF file with accuracy as high as possible. Couple years ago I dealt with task like this but then I lived in pure Win32 API and GDI World. And everything was Perfectly Fine. Now I have to solve a task connected with graphic again but under .NET. How Can I g...more >>

I'm programming in VB .Net but this might be more a trigonometry problem. i've been searching every maths book i can find and i haven't found anything i can use with VB. So, what i need to know is how to calculate the distance, between a line (defined by two points) and a third point, to that...more >>

Hello. I am calling IVMRWindowlessControl9::GetCurrentImage(out addr) with addr = Address of a pointer to a BYTE that will receive the DIB. But this only as background information. My question is how to create a bitmap if one is having only this address. In C# the bitmap constructor contain...more >>

I am developing an application that stores files in a database, Along with the file I'd like to store the files Icon. I have created a File object that I can serialize, compress and write to the blob field of a database. This is working quite well, however for the last week I have been trying ...more >>

Hi everybody!! A parameter of a function need a IntPtr of an Image (System.Drawing.Image). How can obtain this in c#? thanks!!! Red ...more >>

Hi, I'm already an "experienced" vb.net programmer but now I want to learn directx 9 with vb.net, does anyone know some good books to pick up for learning it. I already found these 2, does anyone know if these are good books? ISBN: 1590594010 .Net Game programming in vb.net (Apress) David wel...more >>

Hi, How do you print an barcode gif image to the printer without any other information (Header, footer, link, etc.) Thanks, Mo ...more >>

Helllo I have some code to make a control transparent just like a Toplavel tranparent form But my problem is when I draw a circle on it it is Flicking very much the code is given below please help me how i draw a circle on it without flicking using System; using System.Collections....more >>

Dear all, I have a picturebox and handle MouseMove event in it. MyHandle(.) Handles Mybase.MouseMove DoHardAndLongCalculation end sub What I see, is, that MouseMove call is not waiting until the calculation finished, it can be just called second time. Currently I do following: dim Flag a...more >>

This seems like it SHOULD be simple. I'm displaying an image in an ImageBox on a WebForm. How do I find out the color of a pixel under the cursor (or in response to a mouse click) ? I've looked through system.drawing, system,drawing.design, and system.drawing.drawing2d, but no luck. Tha...more >>

Hello I want to repaint a unmanaged window (IVideoWindow) I have tried to do it by redrawwindow API but it's not work my code is given below - RECT oRECT = new RECT(); RedrawWindow(hWndVideoWindow, ref oRECT, 0, RDW_INVALIDATE); Anybody could help me please how can I redraw the win...more >>

Hi guys I have to draw a string right aligned. I use Graphics.DrawString() with StringFormat.Alignment = Far. Everything works fine except when the string has to be clipped. In this case the alignemnt get left. For example, the text "Hallo World" right aligned should be clipped as "lo Worl...more >>

There is a panel that contain a child window IVideowindow we want to draw shape on IVideowindow window for that we create graphics object by handle of the IVideowindow in Paint event and draw the shape on that. we need to draw the shape on mouse event for that we call the invalidate of ...more >>

Hi, Ive got an application which creates a metafile in memory (doesnt use files) and then tries to draw it into a pdf document. It uses the GdipEmfToWmfBits method to build a byte array representing the metafile object and then draws that to the graphic provided by Siberix whom we use to cre...more >>

Ok a graphics programmer I am not, but I really need to figure this one out and I am hoping to soliciot some suggestions here. I have an image /images that I want to extract individual continous regions (they may or may not be the same size) The order they are in is important, so what I need...more >>

I'Hi, i'm developing an own game developing engine and I'm having trouble with flickering I've tried to change the form's controlStyle and usie double buffering but still I have the problem. The source code can be downloaded here : http://efonsecab.tripod.com/PortafolioTrabajos/MyGameEngine.z...more >>