It states the class you're asking for is not registered. :) If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

act_x wrote: CComCriticalSection myCS ; I just created an ATL server project by Wizrad, and it compiles fine. The class CComCriticalSection is in the namespace ATL. Maybe you should do this way if your class is not derived from built-in ATL classes: ALT::CComCriticalSection myCS; Maxwell Chen

act_x wrote: before the process of un-install , I need to kill the process . cruel programming. :-D

I think a stand alone exe will do the trick. You can prevent more than one instance running at a time easily enough with a named mutex. You can have the main window as your hidden window which keeps things simple, perhaps one DLL to encapsulate the system tray icon stuff, I've seen that done well although it's not easy unless you're targetting only XP or only Server 200?, and another to encapsulate the USB WM_DEVICE_CHANGE stuff, I've written one like that but it's closed source :( . I can tell you that you may need to download a DDK to get the correct headers for the defines you might need, again if you use any XP and upward only defines it won't work on earlier system. Win2K in the earliest that has usably reliable USB device stuff although some things work a bit on Win98. Do you need COM? You might need a little to get the System tray stuff to work, It's been too long since I looked at it, but nothing more complex than emulating a VB enumeration type if that. A Service? No as long as you can start your app on or near startup and automatically I can't see the need for it being a service. A service shouldn't interact with the UI anyway so not if it's going to have an icon. Remember to scan for already plugged in USB devices on startup and also that they can be reported as fixed or removable, sometimes depending on the chipset revision on the removable media in the removable drive! Enjoy :) Nothing is exactly what it seems but everything with seems can be unpicked.

No need to interact with the desktop for hidden windows. That's only if you want a user to see the windows, which is really frowned upon from services going forward with Vista+. Mark Mark Salsbery Microsoft MVP - Visual C++ :java:

thanks for steering me into resolving this . The key was to enclose the file path in quotes before supplying it to regedit. But I wonder why and how this would be different in a DLL that I developed . Engineering is the effort !

i'd just do it with a switch ProcessObject( int objCode ) { A* a = NULL; switch (objCode) { case 0: a = new whatever0; break; case 1: a = new whatever1; break; etc.. } a->Foo(); } otherwise, maybe you could add static Create methods to your object types, and put refs to those in your array (off the top of my head): class whatever0 : public A { static public whatever0 * Create() { return new whatever0(); } ... }; class whatever1 : public A { static public whatever1 * Create() { return new whatever1(); } ... }; ... OBJ_TYPE objTable[] = { {0, whatever0::Create}, {1, whatever1::Create}, }; ... where OBJ_TYPE is a struct with an int and a function pointer that returns an A* you'd need the static Create functions because you can't do function pointers to non-static member classes. image processing toolkits | batch image processing

you could use a windows hook to intersect the window messages sent by the tray icon for example. Don't try it, just do it! ;-)

thats the nice tip i must say! "Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow "If it were machines, the pair_programming seem to work, but for humans it is pair_crackdown that seems to work! " - Nisamudheen Never mind - my own stupidity is the source of every "problem" - Mixture cheers, Alok Gupta VC Forum Q&A :- I/IV Support CRY- Child Relief and You

ahh that was silly. Sorry for bothering u guys . Never thought it was an access issue ! Engineering is the effort !

The previous Post and ExtractIconEx is always at your service... A Second Solution: (b******ized version) There's always LoadResource(),FindResource() My First Article : KitKat - A Very Simple Pseudo-RootKit (unedited)

act_x wrote: is it possible to have a standalone system tray icon without an exe ? Typically an exe exposes a System tray icon . No. If you wanted to do something like this you should make a small launcher application which manages the tray icon and launches the main application when needed. Steve

I think you'll find the answer in this article: Free size and extended styles in CPropertySheets[^] HTH, Change of fashion is the tax levied by the industry of the poor on the vanity of the rich Fold with us! ¤ flickr

When a New Device (like your music player) is plugged in, a Window Message ( WM_DEVICECHANGE ) is sent to all the resident windows... All you need to do is create a resident application with a hidden window...The window will recieve A WM_DEVICECHANGE Message...this is where you detect whether it's a viable device... There's also a "RegisterDeviceNotification" (though, i'm not familiar with it...) I'm not sure if this was what you were expecting? Is there any specfic event you want to "listen" to? My First Article : KitKat - A Very Simple Pseudo-RootKit (unedited) modified on Thursday, February 21, 2008 9:35 AM

There are loads of nifty looking controls on a certain website full of code articles... Gradient coloured bubble buttons, all sorts. I will warn you though - when you venture into Nifty, you usually take a huge detour through Hideous. Iain. Iain Clarke appearing in spite of being begged not to by CPallini.

Cool. What are the exact linker errors? From the code you've shown, the COM module shouldn't know anything about a CString in the library code. Mark Mark Salsbery Microsoft MVP - Visual C++ :java:

First thing, you cannot distribute debug version of your program. Then, you need to install the run-time libraries and MFC libraries on the target machine. For that, you can execute vcredist_x86.exe on the target machine (you can download it from here[^]). The link I provided is for VC2005 standard. If you installed the SP1 for VC2005, then look at the links at the bottom of the page, there is a similar download for SP1. This will install the release versions of the libraries, so you need to distribute a release version of your program too. Cédric Moonen Software developer Charting control [v1.2]

act_x wrote: I am adding the code to display some status in the List Control If you are using list control, LB_ADDSTRING is wrong message to send. LB_ADDSTRING is used to insert item into list box. Use the LVM_INSERTITEM message. nave [OpenedFileFinder]