Once I saw an implementation of OctreeQuantizer that did not require the Unsafe keyword. Now that I want it I can't find it. Do you know how to find that site? Also do you have a comment about reasons for using the "safe" or the "unsafe" OctreeQuantizer code. What site contains t...more >>

Hi all, I have a strange problem: When my application print something with System.Drawing.Printing.PrintDocument(), my application thread (MessageLoop) is going down. I know that because I putted an event on Application.ThreadExit and this event is launched when printing. What is also str...more >>

Is there a way to check whether two Colors are equal? If the Colors have different Name properties, the = operator will return false even if the A,R,G, and B properties are equal. I would like to be able to check whether two colors are equal based only on the properties that determine what col...more >>

I have created declared a Bitmap using the following statement: Dim bmp As New Bitmap(100, 100, PixelFormat.Format8bppIndexed) Because the SetPixel() method is disabled and a Graphics object cannot be created for indexed PixelFormats, I am not sure how to edit the Bitmap. I am assuming tha...more >>

hi, i need to know the size of an image without reading the whole file. any ideas where to start? i assume some p/invoke would be needed :/ i need this because loading whole images into memory takes lots of time. and when you have lets say 300 of them, 6Mpix each it may take ages....more >>

I used C# to create some bitmaps and save them as a TIFF file. Now i want to add metadata to the TIFF file. How can i do this? Thanks, Ben...more >>

I have finally figured out how to create transparency in GIF files when creating them with VB.NET (it is harder than I think it should be, but at least I can do it now). I would like to write a couple functions and/or subroutines to make this easier. However, when I pass a Bitmap as a parame...more >>

Originally posted this question http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2444877&SiteID=1 but realized it was the wrong forum. These two examples might be bugs, missing documentation or me being silly. This code bit generates an OverflowException. Graphics g = this.CreateGr...more >>

Hi All, I am working on .Net Framework 2.0 (Graphics module). I am facing a strange problem w.r.t IntersectsWith function which is used to determine whether two given rectangles intersect with each other (or) not. I have two cases where the rectangles in both the cases touch...more >>

I need to combine two 24bpp bitmaps. The mask bitmap only has two values for its pixels: black or white. The combined resulting bitmap should be: BITMAP1: COLOR X + BITMAP2: BLACK = COLOR X BITMAP1: COLOR X + BITMAP2: WHITE = WHITE How could I do this? Carlos Alloatti...more >>

I have created an ASP.NET Page to display images in a specified size and/or display a blank image if no image exists. Here is my code: <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="imgresizer.aspx.vb" Inherits="ECommerce.imgresizer" %> Imports System.Drawing Imports System....more >>

I`m trying to draw column header`s sort arrow visual style using VisualRenderer but I always geting exception 'Given combination of Class, Part, and State is not defined by the current visual style'. That`s my code: VisualRenderer = new VisualStyleRenderer(VisualStyleElement.Header.SortArr...more >>

I need a colormatrix that will change every non white pixel in an image to black, and leave all white pixels white. Any ideas? Carlos Aloatti...more >>

Hi, I have a big problem .... that only occures on my customer computers .... There is no pattern when the error will popup .... it can after 30 seconds or after minuter or more ..... the thing is that even if the user doesn't do anything , he/she goes on a break or something the error pop...more >>

I'm using the System.Drawing.Imaging namespace to create multi-page TIFFs. Some of the frames are pulled from existing JPEG files and some are dynamically created by my application using the following process: 1) Create a new bitmap, specifying size 2) Obtain the graphics object for the bit...more >>

Currently the code looks like this (it doesn't work) Private m_BmpStream As Stream Private m_Assembly As System.Reflection.Assembly = _ Reflection.Assembly.GetEntryAssembly() m_BmpStream = _ m_Assembly.GetManifestResourceStream("LOGO.bmp") ...more >>

Hi all, MeasureString takes only a string as an argument with specified formatting etc. Is it possible (or is anyone aware of any utils) that enable you to measure the size of strings with inline formatting. ie "this is normal. <b>this is bold</b>. this is normal." ...........is di...more >>

I'm looking to create a scoreboard program for a friendly single-elimination competition. As people are eliminated, I want to display a little animation where something comes on-screen and, say, blows up the losing scores (or kicks them away, or sprays them with acid, etc., something that says...more >>

scenario (i call it wise image save): PART 1 1. open bitmap from file 2. check if image uses alpha transparency - that is literally iterate through each pixel and check if there is any pixel with alpha value other than 255 3a. if image has transparent pixels save to stream as PNG 3b. if image...more >>

I have a listbox populated with Objects. The Class has a String field that ToString returns. I assume that is what the Listbox uses for its display. Correct? If I change the value of the object's string field the Listbox display does not change. Would you expect it to change? The Debug...more >>