cannot convert from 'class CWnd *' to 'struct HWND_ *'?该怎么解决

cannot convert from class CWnd * to struct HWND__ *??这是什么意思,怎么修改代码?求教?[解决办法]

cannot convert from 'class CWnd *' to 'struct HWND__ *'??
这是什么意思,怎么修改代码?求教?

[解决办法]
调用对应窗口类的 GetSafeHwnd()
[解决办法]
GetSafeHwnd()
FromHandle()