一段9行的代码，高手看看哪有问题。

[MorbidangeL]

HANDLE m_hShareInfo;

typedef struct share_info3d
{
double cx,cy;
double w,h;
}SHARE_INFO3D;

SHARE_INFO3D m_shareInfo;

CWnd *m_pWnd = NULL;

m_pWnd = FindWindow(NULL,"3D Display"); //row 62

D:\VCProjects\ProjectBSC\ProjectBSC.cpp(62) : error C2440: '=' : cannot convert from 'struct HWND__ *' to 'class CWnd *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

[jacklzw88]

先去看一下FindWindow，有两个函数类型的饿，一个返回HWND，一个返回CWnd ，参数不一样

[wangk]

改成
CWnd m_pWnd = NULL;
HWND hWnd = NULL;
hWnd = ::FindWindow(NULL,"3D Display");
m_pWnd.Attach(hWnd);
//对m_pWnd的操作
//....
m_pWnd.Detach();

[wangk]

改成
CWnd m_pWnd;
HWND hWnd = NULL;
hWnd = ::FindWindow(NULL,"3D Display");
m_pWnd.Attach(hWnd);
//对m_pWnd的操作
//....
m_pWnd.Detach();

[jishufenxi]

这样写:CWnd::FindWindow(NULL,"Display")

[zjh824]

m_pWnd =CWnd::FromHandle( FindWindow(NULL,"3D Display"));