I've got a problem with the Bitmap.Save() method: it keeps crashing on some pictures. Some pictures just work, others just crash. And it is very often, roundabout ever third picture crashes on Save after some operation. Take for example the picture http://home.foni.net/~sjost/fremd/IMGP5753...more >>

The Bitmap object supports loading .bmp, .tiff. jpg ...etc files.. But it doesn't supports Targa images (.TGA). Any body has an idea how to do that in VB.NET? Thanx ...more >>

I have an XML file that has settings for my app. Many of the settings involve color (i.e. <BackColor>Red</BackColor>). The XML value is read into a string, so I have a string called strBackColor with the value "Red". Now I want to set the form to BackColor.Red. How do I do this without hav...more >>

StringFormatFlagsNoFitBlackBox and StringFormatFlags.FitBlackBox are both set to the value 4, yet according to MSDN documentation, each is defined to be the opposite of the other. Looking at the .NET StringFormat class in reflector I see no conversion of StringFormatFlags coming from GDI+ or vice...more >>

Any 3rd party RectTracker library to buy in Internet? I already know Bob Powell's one. I would like to have a control that allow user to select a area of an image freely and do cropping. Thanks, Jason ...more >>

Hi everyone Does anyone know if .net supports multi-layer drawing? I need to draw different shapes (or remove them) on different layers Thanks Sam ...more >>

I'm developing a web service that receives an image file. Once I receive that file I have to resize it and save it on the web server. This is all working just fine with one exception - the new resized image file is larger than the original file. For example my original file would be a bitma...more >>

Hi, I've found the GetHardMargins code written by Ron Allen. I have it working... But I've not exactly sure what to do with it. I simple want to paint a drawing over 2 pages. The 2 bits of paper would then be trimmed and stuck together with tape. I think the easiest thing for me to do ...more >>

Hi, I am somewhat new to the .net framework, and I need to create thumbnails for an asp.net app that are 140x100 regardless of the source file's aspect ratio. To deal with the difference in aspect ratios, the thumbnails should use the largest center rectangle they can. Any ideas? Tha...more >>

G'Day, Im writing a small card-game app. To this end I made a routine to render the playing cards using GDI+. Now most fonts come with the Clubs Spades Heats and Dimonds symbles included. Using Char map I found U+2665 U+2666 U+2663 U+2660 in the arial font. So I try to draw these chars in w...more >>

VS 2003 Pro C++ After a struggle trying to set Jpeg quality using managed code in C++ I learn that C++ can't handle 'jagged arrays' in C++, and that ImageCodecInfo is a jagged array. To be remedied in Whidbey it seems. Ho Hum. -- AlexG - Math via C++...more >>

Is there a sample code to drawing bar charts Thanks ...more >>

(Type your message here) Hi Everybody,i have an asp.net web application where in which i need to draw line between two points and i also need to find the intermediate points between them. Please help. -------------------------------- From: raj kumar ----------------------- Posted by a user ...more >>

Hi. To draw a point (with a graphic), I can use graphic.DrawLine. But, there is no method to draw a simple point. What do have I to use ? ...more >>

hi, I have the following sample .NET 1.0 code which converts a metafile to a bitmap: Dim tmpImage As Bitmap 'System.Drawing.Image Dim streamX As New System.IO.MemoryStream() Dim fs As FileStream, br As BinaryReader Dim FilePath As String Dim data() As Byte FilePath = Application.Startup...more >>

i, i got a form with an image as background , and several transparent controls on it, and i'm suffering of 2 big problems, the first one is that the controls are flicking whenever the form is activated or whenever is Bring to the front again. problem two is that same kind of flick when the s...more >>

Could anyone tell me why my lines drawn on picturebox control flick when I resize my form. This problem does not occur in VB6. What I have done is that I re-draw the lines in the resize event of the picturebox control SAM ...more >>

I've been charged with the task of finding a way to reduce the sizes of our tiff files. I'm currently using LEAD tools on the client to save the scanned images. All the images have to be originally scanned with color since it is not known if color is needed until the image is sent to the serve...more >>

Hi All, I am facing one problem in GDI(C#) . I have drwan Pie/Bar graph using system.drawing but now I find out if user click on any segment of pie or rectangle of Bar , that segment/rectangle want to capture. Plz suggest ? Thanks&Regards, Anupam -------------------------------- From: An...more >>

Hi there, I wish to be using GDI+ to make a batch conversion utility, but I do not wish to limit it to 1 codec. According the the documentation, "You can use an EncoderParameter object to pass an array of values to an image encoder. You can also use an EncoderParameter object to r...more >>

Quick question (I searched but couldn't find the answer, although I'm sure this has been asked before): Is it possible to simply draw to the very foremost layer using GDI+? As in, let's say I want to implement some nice, transparent rubberband selection of controls within a Form. Now, I can only...more >>

I am image files that I load into a PictureBox control. After doing some processing, I close the form that is using the PictureBox control. Then I try to delete the file but I get the execption thrown that file is being used by another process. I have tried different methods but nothing helps....more >>

hi all i included the sources of my form. when run, u can open a bmp file. once opened, and resized, u will see that the image is upside down. can someone please tell me why this is happening? tnx assaf the code: using System; using System.Runtime.InteropServices; usin...more >>

The following line of code: will write on some images and not others. g.DrawString(text,font,new SolidBrush(Color.YellowGreen),area); I've gone about showing my area.x and area.y and they give me the coordinates on the image, then when i hook to the mousemove event on a imagebox, i just disp...more >>

Hai, I am new to this group. I face memory problem when i load a 3mb image in my picturebox in c#. I got the following error at System.Drawing.Graphics.CheckErrorStatus(Int32 status) at System.Drawing.Graphics.DrawImage(Image image, Int32 x, Int32 y, Int32 width, Int32 height) ...more >>

Hi, all! Using VB.Net behind ASP.Net, and was wondering about how to achieve a simple two-element line graph. I've looked around a bit, but I really can't buy a graphing component (company won't spring for it). Is there a native way to achieve what I want to do, short of doing line drawing my...more >>

I'm relatively new to the dotnet framework. I need to draw a 16x16 block array of 16x16 pixel icons in as short a time as possible to achieve the effect of animation. My code is below (compact framework) but it runs far too slowly. Do I stand any chance with GDI+? Private Sub frmMAin_Paint...more >>

I'm using managed C++. I need to pass a "LOGFONT structure based" class to the method FromLogFont. How can I do that ? I have tried passing structures and classes with the same fields as LOGFONT but I always get the exception: "An unhandled exception of type 'System.ArgumentException' occu...more >>

can i create an animated gif with the dotnet framework?...more >>

I am writing some software that outputs a DXF CAD file. The text height for a DXF file is the distance from the baseline of the text to the top of the letter (excluding internal leading)*. I have included some sample vb code to demonstrate the problem I am having. The internal leading value I...more >>

Hi, I just wonder if anyone can help me with that: I need to print some text along a circle but i can't seem to find an easy way to do that. I can imagine that it can somehow be done with GraphicPath and Transform, moving coordinate axes on some angle after each letter but this way it's go...more >>

Hi, Is there any formula for drawing a curve line with 3 points in DrawCurve Method? I will give 3 points and I want to create a smooth curve line by connecting three points. I want to change the middle point location to several places and I want to draw a curve line by passing this new l...more >>

I'm rotating an object (eg. a GraphicsPath) using the Matrix.Rotate method. Eg: Dim myPath As GraphicsPath Dim matrix As New Matrix matrix.Rotate(Me.Rotate) myPath.Transform(matrix) Is there a way specify the center point around which the ro...more >>

In an existing (working) D3D9 VB.Net application, I wanted to add a video clip rendered to a texture. The precompiled vbVideoTexture.exe sample from the DX9 SDK (summer 2003 update) works, so I modeled my own code after what I found in the DX90SDK\Samples\VB.Net\AudioVideo\Texture directory. ...more >>

All, I've been trying to figure out how to create a fence with the mouse cursor, like you can on a form in VS.NET to select multiple controls. I'm wanting the Rectangle that is created when a user click and then drags. Thanks for the help. Jason Newell Software Engineer ...more >>

Hi, Group I am Beginner in graphic programing and I am using C# Languaje. I would like some advice on how could start maybe some good books, Web sites , white papers or yours experiences is good too ... Best Regard Mario ...more >>

I am trying to add print preview to an application using the printpreviewdialog control. when the printpage event fires, the visibleclipbounds for the graphics control are incredibly large, on the order of 1000000 to 3000000. Consequently, my page is being painted in a narrow band on the r...more >>

I have been trying to get the blue color that is used as the border of text boxes, combo boxes etc. in windows XP. The reason is I have a control which needs this color and I need it to be consistent if they change to say the silver look instead of the blue. I have looked extensively in MSDN and...more >>

Hi. I want to do something like paint. I want to draw a line. So, the first clic indicates the beginning of the line. Then, while I have not clic again, the line is following the cursor. So, when I begin to draw the line, I copy the bitmap with my drawing. Then, I draw the line, and when th...more >>

I have a problem with the System.Drawing.Bitmap class. I've created some code to create a screenshot from an ActiveX component which I'll display on a Panel. The ActiveX component has its own Image class, but I have to convert it to the System.Drawing.Bitmap by setting each pixel into the new...more >>

The online documentation for GDI+ shows a SetToIdentity method for the ImageAttributes class. But, I can't use this method in a VB.Net 1.1 project. It doesn't show up using IntelliSense or the online help. Most (but not all!) of the other methods do appear. What am I missing please? Best...more >>

Pen/Brush also has Transformation property and Translate/ScaleXXXX method. But I dont' understand how to use it. Is there any document on these? Thanks! ...more >>

hi all. i have a dot net form with a background image. the image size is 1024 x 768. i set the form's AutoScrollMinSize to 1024 x 768. i run the app. when i gently scroll the form, the cpu shoots up to 100%. a similar unmanaged application using BitBlt does not invoke to cpu at all. ...more >>

Hi, I am developing an application. This will acquire data from Imaging Device. The Data is in 256 Gray Color.(8 Bits per Pixel) I am creating Image using public Bitmap(int, int, int, PixelFormat, IntPtr) method. This method works fine for Color, and B&W. But for 256 Gray colors I am not...more >>

Hello everyone Firstly I have to apologise because this post will be a lengthy one. Having Windows XP pro, VS.NET 2003 pro, SQL Server 2000 and .NET 1.1 properly installed, I came upon an idea to make a web application, that will enable users to play chess online with a fellow player. Followin...more >>

Hi. I have a label that sometimes appear in red and sometimes in blue. I need to execute an action based on the label's forecolor but I don't know if my approach is correct. The code below works: If lblSign.ForeColor.ToString = "Color [Blue]" Then ... End If That is ok or is there a bet...more >>

I have two Image: A and B. When I draw Image B, it's background is not drawn. I'd like to copy content of B to A, and don't want the background of B overwrite the content of A. How coud I do that? Thanks! ...more >>

Is there a simple way to draw a rectangle with rounded edges in .NET using the System.Drawing class? I seem to recall that there was this ability in previous versions of MFC. Thanks, brian...more >>

Hi, There're some worryingly throwaway lines in the MSDN docs that 16-bit per channel images are converted to 8-bits per channel for 'processing, display and saving'. Is it the case then that it's impossible to retrieve the 16-bit pixel values at all? You can call LockBits giving it (say) the ...more >>

I can get a partially transparent image to work fine with .Net (ImageAttribute + ColorMatrix), but have not been able to do so with the GDI+ flat API for use with classic VB. I know that I might be able to roll this into a .Net dll, but would like to avoid doing that, since I have been able to...more >>