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How can I convert class CWnd to struct HWND? (Converting AfxGetApp()->m_pMainWnd to HWND)
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See more: VC6MFC
Hi, When I want to use Win32 API functions in some cases it's need to use the HWND of App as an input parameter.
In MFC I used AfxGetApp()->m_pMainWnd but I got this message from VC6 compiler:
error C2440: '=' : cannot convert from 'class CWnd *' to 'struct HWND__ *'.
 
By the way I have the same problem with HINSTANCE parameters.
 
Thanks.
Posted 12 Feb '10 - 1:18
Coder-123456658
Edited 12 Feb '10 - 2:05
CPallini246K
v4
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2 solutions

You should deference the CWnd pointer: using *AfxGetMainWnd() is enough, since CWnd implements the HWND cast operator.
For instance:
::SetWindowText(*AfxGetMainWnd(), _T("Hi Folks"));
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Posted 12 Feb '10 - 2:13
CPallini246K
AfxGetApp()->m_pMainWnd is a CWnd* and the CWnd class has a HWND member called m_hWnd.
 
So you could use it as AfxGetApp()->m_pMainWnd->m_hWnd.
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Posted 12 Feb '10 - 17:32
«_Superman_»51.1K
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