Hi! I need to draw a rectangle like this shown on this page: http://151.100.3.84/technicalpreview/square.htm I am not sure how to obtain the 3D effect. Can anyone provide a suggestion on the simplest way to draw this rectangle? sub Draw3DRect(Graphics as Graphics, Rectangle as Rectangle, _...more >>

I have subclassed the PrintDocument class and overridden OnBeginPrint and OnPrintPage to create a reusable class for reports. My app displays these reports in a PrintPreviewControl. Everything works fine on my XP Pro SP2 (Framework v2.0) dev machine. The problem is that on some, but not all,...more >>

Trying to determine the number of pages in a tiff file. I'm assuming System.Drawing calls pages frames. Here's what I have now, although it clearly doesn't work: Dim img As Image Dim dimen As Guid() img = Image.FromFile("C:\eofb_396.tif") dimen = img.FrameDimensionsList MsgBox(dimen.G...more >>

I'm writing some file upload code using C# for users on my website. If the image is too large I want to resize it smaller to a thumbnail size. It's working fine for jpegs but the thumbnails of the gifs look pretty bad. I assume it's something to do with the color palette. I don't know a whole...more >>

I keep seeing references (from a number of MVPs among others) about how one can generate temporary graphics by pointing the ImageURL of a control to a web page rather than fixed location. Could someone give me a coherent example? So far I'm stumped. I really can't see how this scheme is s...more >>

Are there examples/samples of adding new image types that can be read/written via the System.Drawing.Image class? I've got a custom image type and would rather not have to load it by creating a Bitmap object, calling LockBits, modifying the bits, and then calling UnlockBits. Thanks, Tor...more >>

Hello to erveryone, i'v an imgPicBox where i've loaded an image. I want crop this, but i would use a graphic selection (photoshop mode for ex.). It's possible? I must use a pen and make a rectangle on image or i can use some component inside the framework? Thanks manuel ...more >>

Hello, I have a print document that has a graphics object as such: Private Sub PrintDocument1_PrintPage(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage Dim AGraphic as Graphics = e.Graphics AGraphic.DrawImage(MyImage, 0,0,...more >>

Hello, Within a string of characters, there are a couple of superscript characters I would like to draw onto an image. I assume I'll need to use the DrawString method to achieve this. I've basically found no information on how to draw superscript characters. Has anyone done this before?...more >>

Hello, I'm looking for your suggestions on how to optimize my control draw routines... I know that the most important thing in optimization is to draw only needed parts (which is passed as ClipRectangle) but I'm having difficulties for this... Let me give you a brief info about how I ...more >>

What are ImageCodecInfo classes? Can tehy make your images (gif, jpeg, etc.) better or why to use them? I made a (another) screen capture program and notice that captures could be better. Could ImageCodecInfo class make screen capture picture better? Thanks for any info! Cheers! ...more >>

Using a mousehook I am drawing the mouse coordinates on the desktopwindow when a user hovers the mouse over a certain control. The problem I am having know I need to invalidate the region where I am drawing the coordinates, thus I need to invalidate a specified region on the desktopwindow. I have...more >>

Exception when creating a Font object: An unhandled exception of type 'System.ArithmeticException' occurred in system.drawing.dll Additional information: Overflow or underflow in the arithmetic operation. This seems really strange. All of a sudden, creating fonts stops work...more >>

Hi all, I'm capturing data from a lab instrument and drawing graphs and things onto a picturebox. I then want to be able to save the resulting image. How do I get a handle (or something) to what I have drawn? Or do I need to create an image object and re-draw it all onto that? Surely no...more >>

Not sure if this is the right forum to ask this but ..... I am looking at storing text in jpg files. I have been pointed at a non standard method of storing it in bmp files http://vbnet.mvps.org/code/file/combine1.htm and at a standard method http://www.jsware.net/jsware/scripts.php3#jsi...more >>

Defining an image file like below worked in vb2003: e.Graphics().DrawImage(System.Drawing.Image.FromFile("QC2Invoice.png"), e.Graphics.VisibleClipBounds) "QC2Invoice.png" in ../bin/release Does anyone know how to make reference to files in the release folder when using vb.2005? Thanks...more >>

Hello, I've developed several controls for an applicaiton which is something similar to PowerPoint... It has a player where all controls do animate in a way where they show on their start time and disappear when their timeline are finished. Some of the controls even contain other control...more >>

I have a 1 bit images (scanned page) and want to display it in greyscale with bilinear to help it look much better when displayed I have looked at Bob Powell's site and played around with the "Create high qaility thumbnail images" sample, but I need to have the page in the same dimensions a...more >>

Hi All, I am looking at writing an application (in VB.NET) to find and flag colours used in an image. What is the best way to go? Peter W. ...more >>

Hi there... I am running in the .NET 1.0 framework have an object that has an Image property. Upon a certain event, I want to copy the Image to the Clipboard. This is easy enough: Clipboard.SetDataObject(image) However, if the Image has a transparent background, when I go to paste the Im...more >>

Hi Having created a path using path.addcurve. I then set the clipped area to this path e.Graphics.SetClip(path) I now have an irregular shape. Is it possible to write text into thi shape that automatically word wraps within the clipped area?? thanks john -- johnwg ---------...more >>

Hello i read these forums a bit, and i found some code on the http://www.bobpowell.net/mdiback.htm site. There is a small problem though, i can change the background to a different color alright, but when the child mdi window is clipped, as in half the child goes behind the border of the m...more >>

i need help to finding a algorithm to fill a Bitmap (1024 x 768) with random black/white pixels (pixelsize from 1x1 update to 4x4). I know the setpixel function for draw the pixel, but i need a algorithm to calculate the pixel color nicely. like this picture http://zeus.rutgers.edu/gifs/rds.gi...more >>

I have a bitmap and I want to fill an area that is delimited by the color black, I do not know the path of the area, I just want to know how to fill a given area by knowing a point inside it and the rgb color of its border, how can I do this ? This is similar to the fill function of any graphic...more >>

Is there a way to convert text documents to image files? ...more >>

I have just been asked if I can draw over a perspective photo in a specific area. It would be a rectangle and on the base image, the region to be drawn over will be an easy color to detect. So I know that I can determine the 4 corners of the region to draw on. What I'd like to do is draw a...more >>

Hi, I'm trying to capture hidden window's data that is in IE's AxSHDocVw.AxWebBrowser ActiveX control. If Control and window are visible, code below works but if Control and it's window is hidden e.g. emmedded in dll, code does not save data as an picture. How should I handle this kind of s...more >>

Hi again, How to configure the pen mode using GDI+ ? Example: R2_XORPEN Thanks,...more >>

Hi, How to make RoundRect using GDI+? PS: I saw only DrawRectangle (there is no DrawRoundRect). Thanks. ...more >>

I have been reading the newsgroups and have found that indeed, it's not possible to create an animated gif with GDI+. This is a bummer, I thought for sure there would be a class for this. Anyway, moving along.. I still need to do this somehow. Does anyone have experience with any librarie...more >>

I load a file into a bitmap object. The bitmap object is in 8bits. I need to now supply the handle to a C dll which accepts and integer value (HBitmap). The problem I am having in .NET is when I try to get the handle, what is returned by GetHBitmap is 32 bits. The C dll can only handle up to...more >>

I´m trying to get the exact heigh of a string ("X"). I try Graphics.Measurestring() or Font.GetHeight() but all function give me the Height with ascent and descent of the font. I need exactly the Height of the Character "X". Thanks in advance Hans Peter ...more >>

I´m trying to draw with "DrawString" the textbox multiline text. I have used diferent Flag of Stringformat and don´t get the DrawString method draw in the same TextBox form....more >>

- i am not a beginner, books, or online tutorials don't help, please save your advises- i want to learn c# from someone who knows it well. concepts and fundamentals i currently have (gdi+, activeX, directX, oop,classes, how they interact with each other etc.) you should connect to my desk...more >>

Hi, I am receiving data from an external source in form of events. The incoming events are very fast. Initially I was using windows datagrid control to display the data, but it seems to be very slow. Please tell me, how can I create my own custom lightweight grid to solve this issue or poin...more >>

VS.NET 2003+.NET Framework 1.1 Is there an easy way to pass the output of my GDI+ drawing commands to a bitmap (say at a resolution of one coordinate point to one image bit)? I want to save my drawing canvas to a JPEG file for use in a web page, for example. Thanks in advance. chris ...more >>

I am trying to develop a CheckListBox wich triggers a ItemChecked event if and only if the user clicks the check mark of a row. I already tried setting "CheckedOnClick" to FALSE but that alone wont work because ItemChecked is triggered when clicking an already selected row. OwnerDrawing see...more >>

Hello All! Has C# any classes to convert html page to gif or tif? Anyone could please, give how to do it? Br Wew ...more >>

See online physical and historical maps of Europe: http://www.euratlas.com Best to all of you ...more >>

Guys, I need a quick and simple answer (if possible.) Is there an easy way to do simple vector graphics (drawing a line or a circle) on the image of a web page's ImageButton? Thanks....more >>

Hi Folks, I promise I haven't forgotten you all. I am currently doing consulting work for a group that has a very tight internet security policy (With good reason I might add) As a consequence I can't use the newsgroups at-all on Wednesday, Thursday or Friday unless I can find a convienient h...more >>

I have used Bob Powell's ZoomPicBox example to create a user control. I am trying to add the ability to zoom to a selection rectangle and zoom into the coordinates on that image. My idea was to calcuate the amount that the selection rectangle would be zoomed in and then use the matrix to go to...more >>

Hello all, I'm developing an intranet application in VB.NET that uses a Hosted Windows Form (HWF) dedicated to image manipulation. This HWF is also supposed to allow the user to print an image to their default printer. I'm using a System.Drawing.Printing.PrintDocument object to initiate print...more >>

Hi, I have to draw a geometric form quite complex, like a car for example. Then, i need to know which part of the car the user has clicked on. I have been told to "draw" the car with Microsoft Visio to create a .emf file, to use the MetaFile class to print the form on the screen, and then t...more >>

If ctl is a System.Windows.Forms.ListControl, when the following lines: using (SolidBrush br2 = new SolidBrush(fore)) { g.DrawString(text, ctl.Font, br2, x2 + 10, rect.Top); } can throw an ExternalException (A generic error occurred in GDI+)?...more >>

My application breaks multi-page faxes into a collection of images, one for each page. The faxes are saved by our fax software as multi-frame TIFFs with a pixel format of Format1bppIndexed. While processing the pages, I am creating a new Bitmap of each frame and found the new Bitmap had a ...more >>

In my (C# 2.0) application I have implemented international rich text rendering with uniscribe. It paint well on the screen. It's when I try to print or print preview I experience trouble. PrintPreview doesn't work at all. I just have a blank page. Printing kind of work but I have to sca...more >>

I am looking to make a homegrown vector drawing tool, similar to making vector drawings in Word or Powerpoint. It should be easy to use and intuitive, like Word or the old MacDraw. I want to make it easy for beginners, as opposed to something harder or more involved like Illustrator or Flash... ...more >>

Hi i wan to build an application to show some stuff in a graphical way. I'm a datwarehousedeveloper and i want to build a graphical interface for representing the facts and dimensions. I want to create context menu's and i want to drill down on a dimension or a fact. It should be possible to sho...more >>

I'm currently drawing a line graph using the DrawCurve method. So I have an array of points through which the line should be drawn. This is all going well, but there is an issue I can't come round. The values in the graph are percentages (0-100%). But if point 1 is a low percentage (say 50%), ...more >>