Translating a WIN32 API message handler to MFC Message Map - c++

Question

I have a working windows API application with the CALLBACK proc function as follows:
INT_PTR CALLBACK myTestCallBack(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch(uMsg) {
case WM_INITDIALOG:
HWND myRichEditHWND = GetDlgItem (hwndDlg, IDC_TEST);
// set some text length limit
SendMessage (myRichEditHWND, EM_LIMITTEXT, (WPARAM)MAX_STRING_LEN - 1, 0);
// we need key and mouse events, see WM_NOTIFY
SendMessage (myRichEditHWND, EM_SETEVENTMASK, 0, ENM_KEYEVENTS | ENM_MOUSEEVENTS);
// misc options
SendMessage (myRichEditHWND, EM_SETOPTIONS, ECOOP_OR, ECO_AUTOWORDSELECTION | ECO_SELECTIONBAR);
SendMessage (myRichEditHWND, EM_SETZOOM, 64, 52);
return TRUE;
case WM_COMMAND:
switch (LOWORD (wParam)) {
case IDOK:
case IDCANCEL:
PostQuitMessage(0);
EndDialog(hwndDlg, 0);
return TRUE;
}
break;
case WM_NOTIFY:
{
MessageBox(hwndDlg, L"Testing Dialog", L"Test", S_OK);
MSGFILTER* msgf = (MSGFILTER*)lParam;
if (msgf && msgf->nmhdr.hwndFrom == myRichEditHWND)
spellchecker_process (myRichEditHWND, msgf);
return FALSE;
}
default:
break;
}
return FALSE;
}
I am trying to integrate this functionality into an MFC application and I have carried out the following steps:
in the OnInitialUpdate() function i have:
CWnd* pwndBody = GetDlgItem( IDC_EDIT_OUTBOUND_BODY );
ASSERT( pwndBody );
// Send messages to the Control, AA-20/01/2016
// set some text length limit
// richeditcrtl = (HWND)GetDlgItem( IDC_EDIT_OUTBOUND_BODY );
pwndBody->PostMessage(EM_LIMITTEXT, (WPARAM)MAX_STRING_LEN - 1, 0);
// we need key and mouse events, see WM_NOTIFY
pwndBody->PostMessage(EM_SETEVENTMASK, 0, ENM_KEYEVENTS | ENM_MOUSEEVENTS);
// misc options
pwndBody->PostMessage(EM_SETOPTIONS, ECOOP_OR, ECO_AUTOWORDSELECTION | ECO_SELECTIONBAR);
pwndBody->PostMessage(EM_SETZOOM, 64, 52);
I declared a handler:
afx_msg void OnSpellingError( NMHDR * pNotifyStruct, LRESULT * result );
defined the handler:
void CAMCMVOutboundEmailView::OnSpellingError(NMHDR* pNMHDR, LRESULT* Result)
{
MSGFILTER* msgf = (MSGFILTER*)pResult;
spellchecker_process ((HWND)pwndBody, msgf);
}
I provided a binding in the message map:
ON_NOTIFY(NM_RCLICK, IDC_EDIT_OUTBOUND_BODY, OnSpellingError);
because I want to call the spellchecker_process() function when WM_NOTIFY message is received just like it is in the WIN API CALLBACK function above.
I am new to MFC, but I know several things things are wrong and the obvious ones are:
What should be the first parameter of the MFC ON_NOTIFY function? (it shouldn't be NM_RCLICK)
How do I get the LPARAM parameter inside the message handler (OnSpellingError) as I need to cast it to the MSGFILTER?
In summary, I am just trying to implement the WIN API function in my MFC Application. Thanks