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1 How to get CWnd pointer through HWND

// Get the handle of the current windowHWND hWnd = GetSafeHwnd();// Get CWnd pointer through HWNDCWnd* pWnd = CWnd::FromHandle(hWnd);CString strText = _T("");strText.Format("pWnd=0x%X\nthis=0x%X\n", pWnd, this);AfxMessageBox(strText);

2 How to get the pointer of the main window of the application

// get application pointerCDemoApp* pApp = (CDemoApp*)AfxGetApp();// Get the main window pointerCWnd* pMainWnd = pApp->m_pMainWnd;CString strText = _T("");strText.Format("pMainWnd=0x%X\nthis=0x%X\n", pMainWnd, this);AfxMessageBox(strText); 

4 How to maximize, minimize and restore windows