How can I convert class CWnd to struct HWND? (Converting AfxGetApp()->m_pMainWnd to HWND)

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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 1:18am

Coder-123456

Updated 12-Feb-10 2:05am

CPallini

v4

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2 solutions

Solution 1

You should deference the CWnd pointer: using *AfxGetMainWnd() is enough, since CWnd implements the HWND cast operator.
For instance:

::SetWindowText(*AfxGetMainWnd(), _T("Hi Folks"));

Posted 12-Feb-10 2:13am

CPallini

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«_Superman_» · Accepted Answer · 2010-02-12T17:32:00

Solution 2

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.

Posted 12-Feb-10 17:32pm

«_Superman_»