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Dialog app

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a about dilog in a mfc dialog app is modified this way. but it just show several microseconds and immediately disappear. a message loop already in app. that is main dialog DoModal(). CAboutDlg dlgAbout; CWnd *c = AfxGetMainWnd(); dlgAbout.Create(IDD_ABOUTBOX,c); dlgAbout.ShowWindow(SW_SHOW);

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BOOL CtestDlg::OnInitDialog()

CWnd c;
if (c.Create(AfxRegisterWndClass(
return false;


but sub window is not show in main dlg . why?

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Guest Anonymous Poster
"c" is a local object, meaning it goes out of scope on the function's return.

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