m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME)是什么意思?

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m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME)是什么意思?
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m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME)是什么意思?
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME)是什么意思?

m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME)是什么意思?
如果添加了资源,ID 为IDI_ICON1,调用时直接:AfxGetApp()->LoadIcon(IDI_ICON1);
但是这种方法并不能加载系统预定义图标,在CWinApp中还有个装载图标的函数:
HICON LoadStandardIcon( LPCTSTR lpszIconName ) const;
如:
AfxGetApp()->LoadStandardIcon(IDI_QUESTION);