C#

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listview with compact framework Sunshine Always10-Jul-07 0:27 Sunshine Always 10-Jul-07 0:27  hi the application is written in .net compact framework 1.0. i need to display a list of items with different forecolor for each item. the items get added to the list from a file. i have two problems: 1. the items get added but i get a horizontal scrollbar by default. i just want them too be added to the end like that in a listbox. 2. how do i set the forecolor of individual items? thanks. Re: listview with compact framework Sunshine Always10-Jul-07 0:44 Sunshine Always 10-Jul-07 0:44  i got the way to get view the items in a list with vertical scrollbar but the second problem still remains... does anyone have any suggestions??? thanks. Re: listview with compact framework Diana Fernandez10-Jul-07 1:14 Diana Fernandez 10-Jul-07 1:14  For each item in listview you have to set the color like this.listView1.Items[0].ForeColor = System.Drawing.Color.Red; this.listView1.Items[0].ForeColor = System.Drawing.Color.Blue; colourful context menu EvilInide10-Jul-07 0:22 EvilInide 10-Jul-07 0:22  hi How can i build colourful context menu for notification icon(System Tray Icon). Plz share any idea with u. I am getting sooo trouble on it thanks evilinside Re: colourful context menu Paul Conrad13-Jul-07 12:05 Paul Conrad 13-Jul-07 12:05  You are going to have to read up on custom controls. "Any sort of work in VB6 is bound to provide several WTF moments." - Christian Graus Chat Coading Sathiya Narayanan10-Jul-07 0:20 Sathiya Narayanan 10-Jul-07 0:20  Hai friends I am working for one private software company where in i a need to do the chatting program. I am new to .NET platform. please help me by sending either an sample program or by sending the coding. I need the thing in ASP .NET using C# coading. Sathiya Re: Chat Coading EvilInide10-Jul-07 0:27 EvilInide 10-Jul-07 0:27  go to google.com and search "multithreaded chat application in c# " you may get your answer. evilinside Re: Chat Coading Chintan.Desai10-Jul-07 2:24 Chintan.Desai 10-Jul-07 2:24  go to www.questpond.com if you wanna need whole project on chat application. Regards Chintan www.visharadsoft.com (Nothing is so purify as KNOWLEDGE) Session time king2010-Jul-07 0:16 king20 10-Jul-07 0:16  What s session time? How to calculate the session time? wat s the duration of session? Pls reply soon... Thanx Re: Session time Christian Graus10-Jul-07 1:26 Christian Graus 10-Jul-07 1:26  session time relates to web dev, it means how long the web app regards you as being connected when you stay idle. It can be configured on the server. Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum ) Crystal Report Error Syed Shahid Hussain10-Jul-07 0:15 Syed Shahid Hussain 10-Jul-07 0:15  The mysterious error i've found in the database that is. This group section cannot be printed because its condition field is nonexistent or invalid. Format the section to choose another condition field. Error in File C:\DOCUME~1\ADMINI~1.ABC\LOCALS~1\Temp\temp_ef660b00-652e-4d6f-ba7c-e56310031a98 {583537DD-DED3-4230-BB59-FC225EDD5F1E}.rpt: Invalid group condition. Can any one help me against this gaint i'd worked very hard for solving it out but failed..... . Help Help Help.... . Thank Syed Shahid Hussain Color Managment Stevo Z10-Jul-07 0:12 Stevo Z 10-Jul-07 0:12  Hi, I have a custom button, that can have any background Color. Now user can pick background color, byt I don't want user to pick it's forecolor (text color) . I want to calculate that color myself. Can you help me out with some algorithm to do this = to calculate a fore color that is diffrent enough from specified background so that it is perfectly readable for human eye ? I understand HSL Color scheme and tried to create something by myself but it was not good enough and I don't want to put it here so you won't be influenced by my sollution. My only requirement is to keep that text color in grayscale. thanx PS: I've tried luck at Graphics department but not much people visit that forum... Re: Color Managment Christian Graus10-Jul-07 1:23 Christian Graus 10-Jul-07 1:23  I would take the bitmap color, invert it and convert it to greyscale. So, go 255-x on each of the red, green and blue components, then google for the algorithm to convert that color to greyscale ( my first image processing article has it, but I don't know it off the top of my head ) Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum ) Re: Color Managment Stevo Z10-Jul-07 1:42 Stevo Z 10-Jul-07 1:42  Thanx , I'll try that btw your articles are great, I've learned a lot about colors from them Re: Color Managment Luc Pattyn10-Jul-07 1:30 Luc Pattyn 10-Jul-07 1:30  Hi, I would compare the background brightness (Color.GetBrightness) with some middle value, say 0.5f; if larger (=brighter), choose ForeColor=Color.Black, else choose Color.White Luc Pattyn try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] } catch { [Google] } Re: Color Managment Stevo Z10-Jul-07 1:39 Stevo Z 10-Jul-07 1:39  Hi, thats basicaly what I did and the problem is that some Colors are at constant Saturation, Luminacne values (Hue differs) were diffrent for human eye e.g. : try constant Sat : 1f; constant Lum : 0.5f; ======= 0.66 Hue - pure blue - very dark color, perfectly fits with white text color event if luminance is about 0.6f. ======= 0.5f Hue - cyan (something between blue and green)- very bright color, perfectly fits with black text color even if luminance is about 0.4f. Re: Color Managment Luc Pattyn10-Jul-07 2:20 Luc Pattyn 10-Jul-07 2:20  Hi, the way .NET calculates brightness gives about 0.5f for those colors that have the three RGB components equal two one or two zero values and two or one 255 values (that is red, green, blue, cyan, magenta, yellow). For some of these colors you definitely want black foreground, for some it is more or less undecided. I suggest you use Black for brightness (not luminance!) above 0.4f or 0.45f Alternatively you can calculate a fake brightness (in range 0-765) by adding the RGB components of the background; if that exceeds say 500 choose black, otherwise white. This results in black foreground for cyan, magenta, yellow backgrounds (sum 510), but white for red, green and blue (sum 255). Luc Pattyn try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] } catch { [Google] } Re: Color Managment Stevo Z10-Jul-07 3:00 Stevo Z 10-Jul-07 3:00  I know what's the diffrence between HSL and HSB, and I thought Color.GetBrightness() corresponds to HSL luminance. When creating HSL from a .NET Color, i use : this.Luminance = color.GetBrightness(); this.Saturation = color.GetSaturation(); this.Hue = color.GetHue(); so, is this incorrect approach? Ii thought it's just naming diffrence, I never tried to compare values when created color from HSL values if luminance and color.GetBrightness() match. that fake brightness looks interesting, I'll try that, thanx Re: Color Managment Luc Pattyn10-Jul-07 3:11 Luc Pattyn 10-Jul-07 3:11  Hi, I once looked into the brightness/luminance matter, and they are different; HSL and HSB are not the same thing. Google and this article[^] may enlighten you on this. Furthermore what .NET returns as Brightness did not match with my expectations; but maybe I was biased by Java at that time, which IIRC returns the largest of the three RGB values (which is strange by itself since then red and white have the same brightness...) Luc Pattyn try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] } catch { [Google] } Re: Color Managment Stevo Z10-Jul-07 3:45 Stevo Z 10-Jul-07 3:45  Hi. Anyway, fake brightness solved my problem, thanx a lot about C# king2010-Jul-07 0:07 king20 10-Jul-07 0:07  Why C# does not support the multiple Inheritance Re: about C# king2010-Jul-07 0:12 king20 10-Jul-07 0:12  C# does not having more than one super class tats y we r using interfacing concept to overcome this. Re: about C# Christian Graus10-Jul-07 1:21 Christian Graus 10-Jul-07 1:21  Because it was easier not to, I suspect. You should use interfaces as a poor substitute. Interfaces are cool and useful, but they do not replace multiple inheritence. Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum ) Re: about C# Vikram A Punathambekar10-Jul-07 5:05 Vikram A Punathambekar 10-Jul-07 5:05  I don't know... Stroustrup did it way back in the early 80s. Surely MS in the new millennium should have been able to do it? I think Chintan has the right answer below. Cheers, Vıkram. After all is said and done, much is said and little is done. Re: about C# Chintan.Desai10-Jul-07 2:28 Chintan.Desai 10-Jul-07 2:28  let assume following class class base1{} class base2{} class derive{} :base1,base2 Here if both base class has one common method say Method1().Now,during execution if derived class excess Method1(),then derived class will get confuse as from which base class i should get Method1(),therefore they were taken out from C# as well as from java. Regards Chintan www.visharadsoft.com (Nothing is so purify as KNOWLEDGE)

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