I'm using C# documentation from 2001, Based on Framework 1.0. At the same time, I'm using Visual Studio 2005 Beta2, Framework 2.0. I'm trying to use the Graphics class, but I don't see half the methods listed in the documentation: Graphics.FromHwnd - Gone (OK, I've gotten around this by us...more >>

I have a bitmap that I've defined and drawn on and want to save it to a bitmap as follows: Dim bmp As Bitmap Dim g As Graphics Dim c As Color = Color.FromArgb(255, 255, 255, 255) 'use for transparency bmp2 = New Bitmap(24, 24, PixelFormat.Format32bppPArgb) g = Graphics.FromImage(bmp) ...more >>

Hi, Excuse me if this is too naive a question. Though i have been using System.Drawing since some time now, i admit i donot know a LOT about it yet. Is a pen-width of lesser than one pixel supported at all? If i draw two lines with a pen of 0.5 pixels, alongside each other, is there anywa...more >>

System.Drawing.Graphics.DrawString(String, Font, Brush, int, int) what are the units of measurments for the x and y coordinate arguments?...more >>

I need to be able to draw a polygon with rounded corners. That is given (say) an array of points that form the polygon, I'd like to draw it such that the corners are rounded (the radius needs to be configurable). How would I go about doing this? -- Shiv Kumar (THF Team) http://www.dynamic...more >>

Hi, In the override of the Paint-method of a DataGridTextBoxColumn I want to show an image with BitBlt, to see what I can gain there on performance. The problem is: It doesn't show me the image in the DataGrid-Cell's, but a black background... Does anybody has any idea what I am doing wrong...more >>

Hi, My ASP.net applicatian uploads images up to my webserver, and in the process compressess it and decreases the size as well. Now there is one other feature that i want to include in it as well, the bottom part of the iamge shold have my company name on it in kind of like transparent ( but ...more >>

Hi All, I have been trying to get a code snippet for printing a PDF & EXCEL file from a C# windows application. These documents are generated from Reporting Services. Though i can directly render the page and print it, i am facing some problem. so i am trying out to print after the report is ...more >>

Hi, I have an inherited DataGrid, that does lots of extra stuff. For exemple drawing a backgroundimage in every cell. The problem is that it's taking too much time (using gdi+), so I want to do it using DirectX. I downloaded already the DSK etc, but I can't find how I need to draw an image on ...more >>

Greetings, I want to write an application that will look at an image folder and create a spreadsheet that holds image information like width, height, resolution, format and image name. How can I get this information with having to load the image into memory. The images I am working with ...more >>

Hi everyone, I am converting one code from VB to VB.NET. I dont know how to use method LoadPicture() in VB.NET ? All the responses are welcome. Regards,...more >>

I need to draw with a pen using a semitransparent color as in the following example: Dim Color As Color = Color.FromArgb(100, Color.Blue) Dim pen As New Pen(Color, 1) Graphics.DrawPolygon(Pen, Points) however I get a solid line (the alpha channel is ignored by the pen). Can anyone sugges...more >>

Graphics.DrawString will do word wrap, if you pass it a rectangle instead of a point. But, so far as I can see, it will only wrap on whitespace following non-whitespace. Is there any way to supply a word-break handler, so that DrawString can wrap on hyphens (like in "word-break") or dots (like...more >>

Hello, I need to rearrange parts of a picture on the very same picture. Imagine for example a picture of size 800x600 px. What I’d now like to do is to take a rectangle (100, 100, 150, 150) and move this to point(200, 200). Does anybody know how this can be done? Thank you! Dani...more >>

I saw that I can read the list of the installed printers on my computer PrinterSettings.InstalledPrinters; But I wont read the list of the shared printers installed on a domain server. //myserver/printers or simply //myserver It's possible? Thank's Boni...more >>

Hi I ve a pixel array data which has following properties: 512X512, grayscale 16bits per pixel is allocated but 12 bits used for each pixel. I want to display this as a bitmap.How can I do this? morten tried to help about this some topics before.but I m realizing the unused 4 bits by now....more >>

Ok so here's the problem: Our company is slowly but surely deciding that vb.net is much better than vb6.. at last! Anyway, we have a dll which was made by a partner company that contains a function that requires a picturebox hdc. In vb.net the hdc no longer exists and hence I need to find a ...more >>

Hello I begin with gdi+ and i would like draw a line (curved or not). Th problem is for the line "style" : for exemple, the style of line is a lin with half round on it, or the line is composed by * (i don't know if i'm clear sorry for my bad english). How can i do that in vb6 please?...more >>

In one part of a program I use ExtractIconEx and DrawIconEx. The result is that parts of the icon display the background color - I assume those parts are set to be transparent. In another part I do: Dim lIconHandle As IntPtr Dim lImg As Image lIconHandle = Shell.ExtractIcon(Me.Handle,...more >>

If I use the a graphic object's DrawImage method I can draw, for example, a 16x16 Icon as large as the screen. If I were enlarging a photo I might want what I get from DrawImage but for an Icon I'd like to see the pixels (enlarged of course.) That is, I'd like to see the enlarged image ma...more >>

In a C# application I use a Graphics object to plot data on the screen. How can I copy this graph to the clipboard and insert it in a MS Word document? Harald...more >>

Hi folks. I'm going on vacation 'till August 6th. I might drop in here if I find a cybercafe anywhere but I'm hopefully going to be too busy having fun to worry too much about programming ;-) TTFN... -- Bob Powell [MVP] Visual C#, System.Drawing Ramuseco Limited .NET consulting htt...more >>

Hi everyone, I am working on a simple graphics text app, code below. Hopefully Bob will be able to answer this one. I cannot work out the maths to get the sheared text to start at the same position (bottom left) as the upright text appears. You may need to play with fonts and words to see wh...more >>

Dear Group, Are there any known issues in using the GDI+ classes/methods such as SolidBrush, Pen, DrawLine, DrawRectangle or FillRectangle - when the control is painted in a RTL layout? Because, we are encountering unexpected behaviours whenever we switch the layout of our application (to...more >>

I have a bitmap that has a transparent color of Color.Transparent. If I save it to a file using the Save method directly like; mybitmap.Save("c:\mybitmap.bmp") It is saved with the transparentcy preserved. If I save it using a file stream as follows; mystream = New IO.FileStream("c:\mybitma...more >>

I posted this same code long ago and nobody had an answer. I'll try again. Does Region.IsVisible have rounding problems? The code below returns True for a point inside a RectangleF, and False for the same point inside a Region created from the same RectangleF. thanks, matt tag D...more >>

Hi, When I call ShowDialog() method of the PrintPreviewDialog, in .Net 2.0, the first time, all its toolbar buttons are present. Closing this window using the Close buton on the toolbar and then recalling ShowDialog() on the PrintPreviewDialog object, i can't see all my toolbars again! ...more >>

Pardon my rustiness, but is it possible to construct a ColorMatrix that would set alpha for points that match a particular RGB, while leaving alpha untouched for all other pixels? For example, set RGB 0x123456 to 0x20, and then set alpha for RGB 0x654321 to 0x10. -- www.midnightbeach....more >>

How can I detect if a .jpg is progressive or not? I'm using the Bitmap ..NET class. I see it has a PropertyItem array that stores metadata, which I'm guessing will contain that information, but I have no clue how to extract it. Thanks, Gary...more >>

I am trying to create a image object out of a bitmap file like Image img = new Bitmap(@"c-\CurDisplayImage.bmp"); ,I found the memory of the process is increased twice as the bitmap size , for example if I load a 50MB bitmap the memory is increased by 100MB , Also when I draw the image with e.Gr...more >>

Hi All, I get a lot of pixelation (bluriness) when I draw an image into a graphics object that is passed to the Paint event handler when I perform a print. The image that I am using has a DPI of 600x600 (same as the printer) with some text. When it prints the image, the text is blury. No...more >>

Hi, I have a byte array of pixels. I know the size of image (512X512) and pixelformat. How can I create a bitmap image from this byte array? I know it will be with bitmapdata and lockbits. I need some sample code since I do know about details. Bitmap bmp1=new Bitmap(512,512,System.Drawing...more >>

I can convert an Icon to a BitMap but I can't seem to get the Icon Transparent color in order to make the BitMap same color transparent. Would appreciate any Help. -- Dennis in Houston...more >>

I have a user control that I paint myself. I have a bitmap in the control representing the control surface which I draw on then in the control paint event, I use BitBlt to copy this background bitmap to the e.Graphics object passed in the e.System.Windows.Forms.PaintEventArgs to the Paint Eve...more >>

How can i do to make a Pen with Null Color?? i want to use the drawCircle method to erase a circle in a bitmap... please i need help!! ...more >>

Having a hard time with this. Essentially, I want to set all visible pixels in the bitmap to black and then set the transparency to about .25. I can do the transparency with a simple ColorMatrix. But I can't seem to figure out how to apply a ColorMatrix to the image so that only the visible...more >>

Hi, In a Image Processing project, I need to scale the bitmap image without interpolation, just like Paint does when zooming. For example, use Paint to create a bitmap with only one black pixel. Then select the magnifer to zoom the dot with x8. You will see one bigger black dot, which is ...more >>

I needed to create a batch process to convert a large number of JPGs to TIF CCIT4 format. I'm sure there are libraries out there to do this, but I couldn't find any that were free. I also found lots of source code that got me on the right track but never seemed to solve my problem completely...more >>

Good afternoon, ladies & gents. I have an intermittent error occurring on my Windows Form, on which I'm attempting to manually draw a "legend" of colors that applies to background and foreground colors on a grid elsewhere on the form. The error is not intentionally repeatable, and seems to...more >>

I'd to draw a "moving" bitmap in a window, essentially moving the bimap one pixel to the left and a new vertical line all the time. In GDI I accomplished this by doublebuffering and using the win32 call ScrollDC. A rather efficient solution that did not require me to copy/clone by bitmap a...more >>

Why is it five by five, and not four by four? What is the w (omega?) channel for? -- www.midnightbeach.com...more >>

I want to build and show a state transition diagram within our application. This will create/use an XML containing the code/ This diagram shuld be able to show start/end state nodes, activity nodes, decision points etc. It should also have the ability to double click on nodes to show more deta...more >>

Just for the heck of it, a method that will decolor a bitmap, ala XP shutdown. /// <summary> /// Apply a ColorMatrix to the Original to strip out the color /// </summary> /// <param name="Original">Bitmap to decolor</param> /// <param name="Graylevel">0 is full color, 1 is full gray</param>...more >>

Hi, I'm having a strange problem. For some reason .NET Framework on some printers prints draws text offset the graphical elements. I'm trying to draw a table with some text and the same code produces different result on different printers. Bellow is C# example I made to test it. The task...more >>

I have the a point[] in order to draw a polygon, but I'd like to draw a "rounded" edge polygon. How would I go about doing this? -- Shiv Kumar (THF Team) http://www.dynamicarchitects.com ...more >>

Hi, I have a gif image and I would like to change the colors in it. But only the colors that are in the image's palette are accepted. How could I change the palette colors? What program/s can be used to do this? Thanks for the help. Dee ...more >>

hi all how can i replicate mspaints fill option using gdi+. say i was to draw 3 intersecting lines to form an "A" shape and then point the fill tool into the enclosed triangle it will fill with colour. also if i were to draw an unclosed squiggly line and do the same thing the background woul...more >>

Hello, I've got a goal that I would expect to be very simple to meet. I've got a graphics canvas which I've drawn an image onto... and then I'd like to draw text at a -30.00 degree angle, and have that text centered on the image. I tried drawing image, then setting rotatetransform(-30.00) ...more >>

Hi I am storing images in an access database, based on an MSDN article. The code i use to store is as follows: <code> 'Create the command object Dim command As New OleDbCommand("ImageBlobUpdate", dataConnection) Command.CommandType = CommandType.StoredProcedure) 'Get the byte array fr...more >>

i want to convert JPG image file to BMP by using .NET Framework Class Library (System.Drawing.Imaging) there is a class named "ImageFormatConverter", but i couldnt find how to use it. could someone help me please?...more >>