return key pressed event from clistctrl

[Black_Daimond]

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??

[ReorX]

Override CListCtrl with CYourListCtrl and override PreTransLateMessage with something like that:

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);
}

[Sam Hobbs]

Processing Keyboard Messages

[darwen]

Ah, Reorx, that's a little 'brute force' for me :

Try this :

// 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.

[Black_Daimond]

thanks to all for ur replay ,
the solution that ReorX gives works perfectly!!

[Sam Hobbs]

Originally posted by Black_Daimond
the solution that ReorX gives works perfectly!!

It is not the solution Microsoft programmers and MFC experts use.

[Sam Hobbs]

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.