Take a look at this article - http://www.codeproject.com/KB/system/winlogon\_notification\_package.aspx «_Superman_» I love work. It gives me something to do between weekends. Microsoft MVP (Visual C++)

As per the MSDN it should like below:- BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs) { if( !CFrameWnd::PreCreateWindow(cs) ) return FALSE; if(NULL != cs.hMenu ) { ::DestroyMenu(cs.hMenu); // delete menu if loaded cs.hMenu = NULL; // no menu for this window } return TRUE; }

Hi Obafemi Martins ! first of all thanks for your answer - it helped me. When sending I now use an exact MTU packet size (of 9k in my network - I use jumbo size frames) and it works great (no fragmentation is needed) without losses even in high bandwidth. But... The sender MUST send messages of 64K size (Hardware Limits) - so I will not be able to avoid ip fragmentation. How to overcome this issue ? Is it possible to be working when ip fregmatation occurs without any losses ? what can be done ? Thanks in advanced, Amit C.

AmitCohen222 wrote: no other process, mine or the OS's, is allowed to run on it) ? is it possible ? I don't believe so. You may want to use SetThreadAffinityMask to distribute threads among processors, but there's no guarantee the system will actually use your suggestions. Try it and test it thoroughly to see if you're actually getting any benefit - from my experience, on XP and above, the OS thread scheduler does a pretty good job without intervention. Mark Mark Salsbery Microsoft MVP - Visual C++ :java:

Oh yes, I missed that point. You do need to detach the original socket.

No, I used Visual Studio 6.0 Wizard to create a standard Dialog based application. According to what Hamid answered it seems that there is no elegant way to do this, and the solution is to go around it... Amit C.

What was error?

See How to: Create Windows Services (C++ Programming) [^].