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Re: Hiding a Tab Control jonas_berg22-Mar-06 10:05 jonas_berg 22-Mar-06 10:05  This is another way, "removing" it: tabControl.TabPages.RemoveByKey("TapPage"); /j Re: Hiding a Tab Control Ed.Poore22-Mar-06 10:06 Ed.Poore 22-Mar-06 10:06  I think you have to remove the tab, that's the only way I can remember. Ed Progressive vs. Baseline JPEG SylvesterW22-Mar-06 9:10 SylvesterW 22-Mar-06 9:10  Hi, I need to distinguish progressive jpeg's from baseline jpeg's. So far I retrieved all image properties using image.GetPropertyItem, and all properties are the same for these two kinds. There is also function GetEncoderParameterList, but it can only (at least as far as I know) be used to set encoding properties when you want to save a file. Do you know maybe how can I use GetEncoderParameterList for my purpose? Or, how can I distinguish these two types of JPEG's by reading and comparing bytes from image file. Thanks SW Re: Progressive vs. Baseline JPEG DaBears22-Mar-06 11:39 DaBears 22-Mar-06 11:39  Progressive information is held in the JPEG compression header. You need to read in the jpeg file then access the fields by address. There are three single byte address fields (0xC2, 0xC6, 0xCA) that holds progressive information. Generally I think 0xC2 is always set if the jpeg is progressive. So create a struct that contains the information you want and then read the file into that struct (fread, or the .NET equivlant), and then access the proper field. Mike Re: Progressive vs. Baseline JPEG SylvesterW22-Mar-06 19:45 SylvesterW 22-Mar-06 19:45  Mike, Thank you for fast response. Could you post a sample code how I could access and retrieve that info using byte address fields (or a link to a website with similar code). I'm a kind of new to image processing and example would help me a lot. Thank you again, Sylvester Re: Progressive vs. Baseline JPEG DaBears23-Mar-06 5:36 DaBears 23-Mar-06 5:36  Hey Sly, Here is a link to some code samples to give you an idea on what to do. Don't follow exactly because the addressing doesn't line up, the BITMAPINFO struct doesn't break out the progressive address so you would have mask the information you need out of what it does hold. http://www.experts-exchange.com/Programming/Q_21769844.html[^] The last post might be a little better info. Also these snippets are written in C so you would have to translate that to C# .NET. Since I haven't done this type of stuff in .NET I can't tell where to head. -Mike Re: Progressive vs. Baseline JPEG SylvesterW23-Mar-06 11:17 SylvesterW 23-Mar-06 11:17  Mike, Unfortunately I don't have subscription on experts-exchange, but at least I know what to look for. Thanks Sly Re: Progressive vs. Baseline JPEG DaBears23-Mar-06 11:30 DaBears 23-Mar-06 11:30  Sly, You don't need a subscription (I don't) just scroll down far enough and you will see the whole post, you have to get past all the ads, and don't click on the "View Solution" button. But just in case I am getting lucky: Based on the info here: http://www.fastgraph.com/help/jpeg_header_format.html You can read in the necessary info, similarly to how I demonstrated with the above code (for bitmap). Firstly, define a struct to store the JPEG header info in: struct JPEGINFOHEADER { unsigned short id ; unsigned short width ; unsigned short height ; unsigned char number_of_component ; // etc etc } ; /** * Return value: * 0 - Successful * -1 - Could not find/open the specified file * -2 - Specified file is not a valid bitmap file */ int LoadJpegHeader( char *filename, JPEGINFOHEADER *jpegInfoHeader ) { FILE *filePtr ; filePtr = fopen( filename, "rb" ) ; if ( filePtr == NULL ) { return -1 ; } fread( JpegInfoHeader, sizeof(JPEGINFOHEADER), 1, filePtr ) ; fclose( filePtr ) ; return 0 ; } Re: Progressive vs. Baseline JPEG SylvesterW23-Mar-06 19:13 SylvesterW 23-Mar-06 19:13  Mike, You are right, when I saw "View solution" I didn't even scroll down the page. I also found a book which covers that topic very well. The title is: "Compressed Image File Formats: jpeg, png, gif, xbm, bmp" by John Miano, 1999 It also has a CD with console application (jpegdump) written in c++ extracting all info from jpeg file. Now, I only need to convert it to c#. Great!!! Thanks Sylvester C# Generating Outlook contacts Paul Sullivan22-Mar-06 8:57 Paul Sullivan 22-Mar-06 8:57  I have a web app and I would like to create Outlook contacts and assign them to groups in the Outlook address book. I'm using C# and Visual Studio 2005. Can someone help point me in the right direction? Thanks paul binding a datagrid to an arraylist brianmelion22-Mar-06 8:21 brianmelion 22-Mar-06 8:21  Hi, in a windows form I am trying to populate a datagrid from an arraylist. instead of getting the text value I am getting the length of each string in the array passed to the grid, in this case the number "5" ArrayList list = new ArrayList(); list.Add("Test1"); list.Add("Test2"); dataGrid1.DataSource = list; Any ideas? thanks brian How to get User Idle time engsrini22-Mar-06 7:17 engsrini 22-Mar-06 7:17  Hi all, I developing a windows application which will have login verification and other stuffs. I want to lock the application when the user is idle (as like in windows ctrl+alt+del lock) for some time(say 1 hour - it should be confiurable parameter). how can i do that in c# I found one event in Application.idle but this event trigger once the UI get painted. Regards, Srini Re: How to get User Idle time Wjousts22-Mar-06 10:03 Wjousts 22-Mar-06 10:03  I use a class that implements IMessageFilter that is added as a message filter after the user has logged in (i.e. Application.AddMessageFilter). The filter contains a timer that gets reset everytime a mouse or keyboard message is received. If the timer ticks (i.e. no mouse or keyboard activity for a defined period of time - five minutes in my case) then my application becomes "inactive" (actually all it does is stop counting how much time the user has been using the program). When a new keyboard or mouse event is received while the app is sleeping it will wake back up and start tracking time again. How to Add Outlook Contacts To Database P R Krishna22-Mar-06 5:43 P R Krishna 22-Mar-06 5:43  I am developing windows application to add "Outlook Contacts" to database. I need to provide option for choosing contacts folder. I need sample code (or idea ) for displaying outlook contacts folders and extracting contacts from selected folder Thanks in advance Ram Re: How to Add Outlook Contacts To Database michaelnoam8-May-06 6:19 michaelnoam 8-May-06 6:19  try entering acovado.com once there you'll find various information on the subject !!!!!!!!! (: Resizable, Shaped Windows Form AssemblySoft22-Mar-06 5:36 AssemblySoft 22-Mar-06 5:36  i have a form which is using a background image for some nice rounded edges as per MS article: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vstechart/html/vbtchshapedwindowsformscontrolsinvisualstudionet.asp[^] This is ok until i want to resize the form. When i resize the bitmap seems to tile, which is not what i want. How do i resize the form and still keep the 1 image in the client area? nsoftware reviews bakerfishsticks22-Mar-06 4:32 bakerfishsticks 22-Mar-06 4:32  We plan on purchasing the IP Works suite that nsoftware provides. We are going to spend around $8000 and just wanted to know if anyone has had any negative experience with them. I cant seem to find any reviews online so I am asking the CP community for help. Adding custom control with CollectionEditor doesn't refresh form DaBears22-Mar-06 4:12 DaBears 22-Mar-06 4:12  I created a custom control inherited from panel that will contain a collection of another custom control. I added an attribute 'Items' that startes the Collection Editor and adds however many instances of the the controls and add it to a collection class. All works fine, the control gets added to the collection, InitializeComponent gets modified, but for the new control to show up on the form I need to rebuild the parent form, THEN it shows up. So my question is, does anyone have tips on what I need to do to get the control added to the collection to actually be displayed on the form upon adding it to the collection? -Mike (ps removal using the Collection Editor works fine) Sudoku puzzle program eric_tran22-Mar-06 4:10 eric_tran 22-Mar-06 4:10  Hi everyone, I've been developing the Sudoku puzzle program. Does anyone know how to implement this function or algorithm: User can create his/her own puzzle and ask the program to provide answer Thanks eric Re: Sudoku puzzle program Ed.Poore22-Mar-06 6:36 Ed.Poore 22-Mar-06 6:36  here Regards Ed Re: Sudoku puzzle program eric_tran27-Mar-06 19:16 eric_tran 27-Mar-06 19:16  Thanks so much eric Re: Sudoku puzzle program DigitalKing22-Mar-06 20:36 DigitalKing 22-Mar-06 20:36  Have a look at these articles: http://www.codeproject.com/csharp/sudoku.asp http://www.codeproject.com/csharp/DokuSolver.asp Re: Sudoku puzzle program eric_tran27-Mar-06 19:16 eric_tran 27-Mar-06 19:16  Thanks a lot They are very useful. eric Client /Server Programming Jijo BP22-Mar-06 4:09 Jijo BP 22-Mar-06 4:09  I developed a chat software. But it works only in LAN. Because I am using IP address to talk each other. The problem is the ip address of 1 machine is local to the LAN. I want to communicate to a machine which is residing in another LAN through Internet. How can I ? Please help me Cheers Jijo Re: Client /Server Programming Divyang Mithaiwala22-Mar-06 4:20 Divyang Mithaiwala 22-Mar-06 4:20  For this problem you have to create one server application. Now your all client send request to server & talk through server. before that client connect with server. I think this will solve your problem. Divyang Mithaiwala System Engineer & Software Developer

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