pallaka wrote: hRet = CoCreateInstance (Clsid, NULL,CLSCTX_LOCAL_SERVER,iid,(void**)&ppv); As a rule, OCX is an in-proc server. With best wishes, Vita

In addition to the help that Mark provided, you should also make sure you have the proper tools. You need Visual Studio 2008 as well as Expression Blend 3. EB3 is almost a must-have to quickly check your formatting, binding, and event handler settings.

I Am using VB6 it doesnt have scroll to end

pallaka wrote: I want to unplug and plug the USB Serial port Programitically, as i need to refresh the connection between system and hardware connected. You cannot do that from user mode. You must ask the driver for that functionality if it supports it at all, which I doubt when it comes to serial port drivers for USB. pallaka wrote: I am facing some strange issue with my USB serial port. Perhaps you can elaborate on what the "strange issue" is all about. It's quite possible that there is another solution than resetting the port/device. What have you done so far and what problems are you facing that you want to solve by resetting the port? "It's supposed to be hard, otherwise anybody could do it!" - selfquote "High speed never compensates for wrong direction!" - unknown

try this using devcon.exe . Its get from http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q311272 Run this exe using process class ... have lot of commanding is there.. i thing its useful for u Thank u

The problem is that the stream in the SerialPort class will not be closed if the external hardware will be removed. this is an bug in the framework. to prevent this behaviour the solution is to rewrite a serial port class using unmanaged code or to kill the application like daveauld described above.. serial port communication was not designed to work during the hardware will be removed. in ealy cases this was not possible because the COM was an integrated hardware in the pc not an usb plugalbe device. i had the same problem and sovled it by rewriting the serial port (internal catching read/write errors and than closing and reopening the filestream on COM). bless :)

Hi, your question isn't clear. Maybe what you want is: "I have a string with hex byte values, and I want to convert it to a string holding the ASCII-equivalent characters". If so, you need: - a way to split the input string in substrings that each represent a single byte (e.g. use string.split to split on spaces) - a loop to iterate over each substring - byte.TryParse(...,NumberStyles.Hexadecimal) to convert this to a byte array - Encoding.ASCII.GetString to convert to the result - optionally insert spaces to separate the characters :) Luc Pattyn I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Check your system, probably there are some process that watch your COM Port. If you say "Unfortunately it is not working with any other hardware also", that means something wrong in your system. That's not .NET problem.

I know that the OP isn't in America. Still, low-cost USB Logic Analyzers that support RS232 decoding, check out ebay: Business & Industrial > Electrical & Test Equipment > Test Equipment > Logic Analyzers http://business.shop.ebay.com/Logic-Analyzers-/97231/i.html[^] Here is the one that I use, and a number of other consultants use: http://www.pctestinstruments.com/[^] Note: The USB Logic Analyzers do not support doing a trigger on a specific data word. So, you would/could trigger the start bot of the RS232. The interpretation is done by post processing software. However, an MSO like the Teks, often support doing a trigger on a specific data word (e.g. trigger on RS232 data value of 0x43).

I have just learnt something new to. This may work simple cast will convert the int (ascii) to a char / symbol. int i = 63; char c = (char)i; label1.Text = c.ToString();

Look at Parse(str, System.Globalization.NumberStyles.HexNumber) You will have to use it a few times and skip the spaces, but it will convert hex "3F" to byte '?' No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced. This message is made of fully recyclable Zeros and Ones

When I bought my USB-to-serial cable, it came with a CD-ROM containing a driver. When I installed it, it turned the port into a regular serial port, so it shows up in all serial port enumerations, and most/all serial apps can use it, whether HyperTerminal or some .NET based app using SerialPort class. The app never is aware the USB-based serial port is connected in a different manner, all the nasty details are hidden by Windows and the device drivers. BTW: there are minor differences between such a USB-to-serial cable and a regular serial port, mainly in timing; it is not able to achieve very high speed in toggling the control lines, which for most applications is irrelevant; if however the attached hardware requires very short pulses on say the DTR/DSR/RTS pins, the motherboard- based serial port might be able to deliver and the USB-to-serial might not, due to the fact USB communication requires data packets, which must be transmitted and interpreted, whereas a direct port is much "closer" to the CPU. :) Luc Pattyn [Forum Guidelines] [My Articles] The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Actually i have done the same thing in VC++ as a stand alone.....application.I mean i have a hardware i am getting the data through serial port....i am storing in the My SQL DataBase i iam reading it and displaying the Grapph.But now i need to support it online...i mean if i click www.exgraph.com i will get a page and which display the graph.i hope u understand my problem.I am not familliar with what is server and how i can connect to the www.....and hoy i can block the memory in the server...I hope the server are third party and i need to buy so where i can get that.....

Hi If you want to present the graphs online (and this is a .net forum) I would say use ASP.NET. You could preprocess the incoming data, so that not every request triggers the redraw of your graph. Regards Sebastian It's not a bug, it's a feature! Check out my CodeProject article Permission-by-aspect. Me in Softwareland.

These are pretty different questions, and you'd probably have been better off posting them as two separate questions. To answer your 2nd question first, I typed "codeproject png button", and the article I got was... A user draw button that supports PNG files with transparency, for Visual C++ 6.0 and VS2005[^] which looks pretty useful for you... As for the 2nd, I think this is down to embedding a manifest as a resource in your exe, but beyond that I get a bit woolly. I with you luck with your search. I know I've seen the answer on this very forum, but you're more motivated to search back than I am. Good luck, Iain. In the process of moving to Sweden for love (awwww). If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

See here. "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

It seems that you are using STL. The possibility is that the variable you are using in the AtlABFUtil.cpp is already been defined in abflib.cpp. Have you included abflib.cpp into atlABFUtil.cpp ? Can you post code snippet for more details ? [Delegates]      [Virtual Desktop]      [Tray Me !] -Malli...! :rose:****