C++之CWnd窗口框架实例

#include <afxwin.h> 
 
class CMyApp:public CWinApp 
{ 
public: 
    virtual BOOL InitInstance(); 
}; 
 
//CMainWindow 
class CMainWindow:public CWnd 
{ 
public: 
    CMainWindow(); 
    ~CMainWindow(); 
 
protected: 
    afx_msg void OnNcDestroy( ); 
    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); 
    afx_msg void OnDestroy( ); 
    DECLARE_MESSAGE_MAP() 
};

#include "ReadBMP.h" 
#include "resource.h" 
 
CMyApp theApp; 
BOOL CMyApp::InitInstance() 
{ 
    m_pMainWnd = new CMainWindow; 
    m_pMainWnd->ShowWindow(m_nCmdShow); 
    return TRUE; //必须返回TRUE,否则不会进入消息循环，界面会直接退出 
} 
 
//CMainWindow 
BEGIN_MESSAGE_MAP(CMainWindow, CWnd) 
ON_WM_CREATE() 
END_MESSAGE_MAP() 
//构造函数 
CMainWindow::CMainWindow() 
{ 
    LPCTSTR lpszClassName = ::AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW, ::LoadCursorA(NULL, IDC_ARROW), (HBRUSH)(COLOR_3DFACE+1), theApp.LoadIcon(IDI_MAIN)); 
    CreateEx(WS_EX_CLIENTEDGE, lpszClassName, "xxx", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL); 
} 
//析构函数 
CMainWindow::~CMainWindow() 
{ 
 
} 
//消息映射函数 
int CMainWindow::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{ 
    //OutputDebugString("oncreate"); 
    //设置菜单 
    HMENU hMenu = ::LoadMenuA(theApp.m_hInstance, (LPCSTR)IDR_MENU); 
    ::SetMenu(m_hWnd, hMenu); 
    return 0; 
} 
 
void CMainWindow::OnNcDestroy( ) 
{ 
    delete this; 
} 
void CMainWindow::OnDestroy() 
{ 
     
}