VC++错误 'OnLButtonDown' : member function not declared in 'CYx2

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VC++<a href=https://www.elefans.com/category/jswz/34/1771449.html style= 错误 'OnLButtonDown' : member function not declared in 'CYx2"/>

VC++错误 'OnLButtonDown' : member function not declared in 'CYx2

没有进行消息响应函数的申明或者消息映射：
你检查下h文件中AFX_MSG与DECLARE_MESSAGE_MAP之间对OnLButtonDown申明没有，申明的格式为：
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
再检查下cpp文件中BEGIN_MESSAGE_MAP与END_MESSAGE_MAP()之间有有消息映射没有，格式为：ON_WM_LBUTTONDOWN()

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VC++错误 'OnLButtonDown' : member function not declared in 'CYx2

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