CPropertySheet custom string why OnRectData not receive messages sent message processing have no rea-CodePudding

 Resource. H# define WM_RECVDATA WM_APP + 8888 

Sender: 
Cstrings * MSG=L "EEEEEE"; 
CAttributePropertySheet * dlgPropertySheet=new CAttributePropertySheet (MSG); 
If (dlgPropertySheet - & gt; DoModal ()=={IDOK) 
CPropertyPage * activePage=dlgPropertySheet - & gt; GetActivePage (); 
The CWnd * pRadarWnd=activePage - & gt; GetParent (); 
If (pRadarWnd - & gt; GetSafeHwnd ()==NULL) 
{
MessageBox (L "Unable to find radar window"); 

} else {
: : SendMessage (pRadarWnd - & gt; WM_RECVDATA GetSafeHwnd (), NULL, (LPARAM) & amp; MSG); 

} 
} 

The receiver 
CImagesAttributePropertyPate. H file code 
Afx_msg LRESULT OnRecvData (WPARAM WPARAM, LPARAM LPARAM); 


CImagesAttributePropertyPate. CPP file code 

BEGIN_MESSAGE_MAP (CImagesAttributePropertyPate CPropertyPage) 
ON_MESSAGE (WM_RECVDATA, & amp; CImagesAttributePropertyPate: : OnRectData) 
END_MESSAGE_MAP () 

LRESULT CImagesAttributePropertyPate: : OnRectData (WPARAM WPARAM, LPARAM LPARAM) 
{
//TODO: add the message handler code and/or invoke the default 
LParam cstrings * RMSG=(cstrings *); 
RMSG AfxMessageBox (*); 

return 0; 
//return CPropertySheet: : OnCopyData (pWnd, pCopyDataStruct); 
}