return key pressed event from clistctrl
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Thread: return key pressed event from clistctrl

  1. #1
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    return key pressed event from clistctrl

    hi i put a listctrl in a framewnd ,i wanna do some works when the user press return key when a list item is selected ,i tried NM_RETURN event but it doesn't work ,some one can help me??
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  2. #2
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    Override CListCtrl with CYourListCtrl and override PreTransLateMessage with something like that:
    Code:
    BOOL CYourListCtrl::PreTranslateMessage(MSG* pMsg) 
    {
    	if( pMsg->message == WM_KEYDOWN )
    	{
    		if(pMsg->wParam == VK_RETURN)
    		{
    			::TranslateMessage(pMsg);
    			::DispatchMessage(pMsg);
    			return TRUE;		    	// DO NOT process further
    		}
    	}
    	
    	return CListCtrl::PreTranslateMessage(pMsg);
    }
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  3. #3
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  4. #4
    Join Date
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    Ah, Reorx, that's a little 'brute force' for me :

    Try this :

    Code:
    // in.cpp
    BEGIN_MESSAGE_MAP(CMyInheritedListCtrl, CListCtrl)
        ON_WM_KEYDOWN()
    END_MESSAGE_MAP()
    
    // in .h
    afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
    
    // in .cpp
    void CMyInheritedListCtrl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
    {
        CListCtrl::OnKeyDown(nChar, nRepCnt, nFlags);
    
        if (nChar == VK_RETURN)
        {
            // yep it's trapped - do whatever you want
        }
    }
    I prefer not to use PreTranslateMessage otherwise you'll end up with everything in it if you're not careful.

    Darwen.

  5. #5
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    thanks to all for ur replay ,
    the solution that ReorX gives works perfectly!!
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  6. #6
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    Originally posted by Black_Daimond
    the solution that ReorX gives works perfectly!!
    It is not the solution Microsoft programmers and MFC experts use.

  7. #7
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    Originally posted by ReorX
    Override CListCtrl with CYourListCtrl and override PreTransLateMessage with something like
    Most people that understand the solutions used by experts choose not to use PreTranslateMessage.

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