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Centers a window relative to its parent.

void CenterWindow( 
   CWnd* pAlternateOwner = NULL  


Pointer to an alternate window relative to which it will be centered (other than the parent window).

Usually called from CDialog::OnInitDialog to center dialog boxes relative to the main window of the application. By default, the function centers child windows relative to their parent window, and pop-up windows relative to their owner. If the pop-up window is not owned, it is centered relative to the screen. To center a window relative to a specific window which is not the owner or parent, the pAlternateOwner parameter may be set to a valid window. To force centering relative to the screen, pass the value returned by CWnd::GetDesktopWindow as pAlternateOwner.

BOOL CAboutDlg::OnInitDialog()


   return TRUE;

Header: afxwin.h