It is possible that it's not atomic - if the processor doesn't have the bus locked while performing the MOV, some other bus attached hardware (like, for example, the other core of the processor, or some hardware performing a DMA) could theoretically write to that memory location if it has precedence over the current processor.

Hopefully you are asking about what Luc posted, setting the variable to null. Otherwise you are out of luck since finalization is non-deterministic in the Garbage Collected environment. led mike

Dudi Avramov wrote: Is there any way to use the .NET image component or other .NET component that will get just the pointer to my image (byte*) and without copying the whole image to .NET component? Nope. AFAIK, the image data must be copied into an object (preferrably decending from Image) on the managed heap for it to work. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007

Just download and build it. http://www.stlport.org/download.html[^]

Dudi Avramov wrote: I need sources. And one day you will call yourself a programer? I will call you a "Copy and Paster"!

Well, i didn't mention that my service loads a dll for system-wide keyboard hooking (using SetWindowsHookEx function with WH_KEYBOARD_LL parameter). I commented out the hooking and the service started on system startup. It seems that there is a problem to hook from service on XP SP2 till the you login. Do you know something about that? Dudi

It is a known bug. Take a look at article Q264985 and Q250847.

They refuse to send it.

Well... here's the documentation for SymFromAddr: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/debug/base/symfromaddr.asp[^] Joel Holdsworth Wanna give me a job this summer? Check out my online CV and project history[^]

Roger Allen wrote: submit@codeproject.com Isn't it webmaster@codeproject.com? This link[^] appears to be confusing... :~ rechi

OK, found it. You need to call SetButtonStyle with TBBS_CHECKBOX | TBBS_CHECKGROUP style. :)

Roger, the problem still exists.

Igor, I have created a thread which own its window message queue and it seems wo work fine. Nevertheless, I will try what you have suggested. Thanks, Dudi

OK, i have found it. Just setting ShowUI field to FALSE in a structure TW_USERINTERFACE.