<div>
You'll probably have to change your function to <br />
<br />
afx_msg void OnMyMessage1(WPARAM wParam, LPARAM lParam); // &lt;- doesn't return anything<br />
<br />
If you have to have a return value, only solution I see is to push this function into a class that derives from CWnd.
</div>


You'll probably have to change your function to

afx_msg void OnMyMessage1(WPARAM wParam, LPARAM lParam); // <- doesn't return anything

If you have to have a return value, only solution I see is to push this function into a class that derives from CWnd.

<div>
Excellent...<br />
<br />
Thanks for the exceptionally fastest response!<br />
<br />
James
</div>


Excellent...

Thanks for the exceptionally fastest response!

James

<div>
<div class="content wysiwyg-content">
I have an old MFC6 application that i have ported across to MFC 8 (2005).<br />
<br />
It fails compilation with the following message<br />
<br />
Error 13 error C2440: 'static_cast' : cannot convert from 'LRESULT (__thiscall CMyAppName::* ) (WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)' d:\source\MyApp\app1.cpp 164<br />
<br />
The CPP file has the following:<br />
ON_MESSAGE(WM_MYMESSAGE1, OnMyMessage1)<br />
and<br />
LRESULT CMyAppName::OnMyMessage1(W<wbr />PARAM wParam, LPARAM lParam) <br />
{<br />
&nbsp; &nbsp;ULONG p1 = static_cast&lt;ULONG&gt; ( wParam );<br />
&nbsp; &nbsp;ULONG p2 = static_cast&lt;ULONG&gt; ( lParam );<br />
&nbsp; &nbsp;...<br />
}<br />
<br />
the Header file has the following:<br />
afx_msg LRESULT OnMyMessage1(WPARAM wParam, LPARAM lParam);<br />
There are words about this all over the internet but no simple step guides as to how to convert it!<br />
<br />
Any help would be appreciated.<br />
<br />
Best regards,<br />
<br />
James<br />

</div>
</div>


I have an old MFC6 application that i have ported across to MFC 8 (2005).

It fails compilation with the following message

Error 13 error C2440: 'static_cast' : cannot convert from 'LRESULT (__thiscall CMyAppName::* ) (WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)' d:\source\MyApp\app1.cpp 164

The CPP file has the following:
ON_MESSAGE(WM_MYMESSAGE1, OnMyMessage1)
and
LRESULT CMyAppName::OnMyMessage1(WPARAM wParam, LPARAM lParam) 
{
   ULONG p1 = static_cast<ULONG> ( wParam );
   ULONG p2 = static_cast<ULONG> ( lParam );
   ...
}

the Header file has the following:
afx_msg LRESULT OnMyMessage1(WPARAM wParam, LPARAM lParam);
There are words about this all over the internet but no simple step guides as to how to convert it!

Any help would be appreciated.

Best regards,

James


Error 13 error C2440 when converting MFC6 app to MFC8...

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