I am not convinced there is a leak ... Please explain this statement After running the code , it's about 85M memory cannot be release on my computer How exactly do you know it isn't released? For example looking at the memory use in Task manager means nothing if that is all you are using. So has this statement got some actual tool basis? If all you are doing is running task manager run the Test for me twice please one after another. void CTestMemDlg::OnOK() { Test(); test(); // RUN test a second time .. if you are bleeding memory use will double CString strInfo; strInfo.Format("Object construction: %d destruction: %d \r\n",g_cCount,g_dCount); AfxMessageBox("finish\r\n"+strInfo); } If the memory use doesn't double to 170M you aren't leaking memory at all you just misunderstand what windows task manager is reporting. In vino veritas

It is not obvious what you are asking based upon the information you have provided. Please be specific about what you are trying to do, how you are trying to do it, and provide some code snippets if possible to increase the possibility that someone might know a way to help.

Yes[^], just make sure to export the desired functions, just as you would do with a dll. Programming Blog utf8-cpp

Make a User account for each person and restrict their privileges. This is not a C++ answer, was it a C++ question? If not you are in the wrong forum

usually,when main exe is running,the dlls it loaded cannot be replaced. i want to replace the loaded dll without kill the main exe. the process of replace the dll module without stop the main exe is called "make hotfix"

Back in the dark ages, F12 was the "break into the debugger" key. I didn't think that was the case anymore, but it sounds like that's what you're seeing. --Mike-- Visual C++ MVP :cool: LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

To perform mousewhel scrolling in a CFormView you have to enter the logic yourself. You have to respond to WM_MOUSEWHELL. Here's a snippet that worked for me: BOOL CSomeFormView::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt) { // test if it is visible first if ( GetStyle() & WS_VSCROLL ) { CPoint ptScroll = GetScrollPosition(); // determine the amount of scrolling int nLines = -zDelta / WHEEL_DELTA; // Scroll to new position ScrollToPosition ( ptScroll + CPoint ( 0, nLines * 15 ) ); } return CFormView::OnMouseWheel(nFlags, zDelta, pt); }