Re: ccombobox

The compiler says there is an error at ATL_MSG_MAP(1) but I can't see anything wrong with it?

--- In [email protected], "domehead100" <domehead100@...> wrote:
>
> 
> 
> I would do something like the code below.  It simply uses CContainedWindowT to subclass the edit control and process it's messages in the message map of the parent (the combobox).
> 
> 
> 
> class CComboView : public CWindowImpl<CComboView, CComboBox>
> {
> 	CContainedWindowT<CEdit> m_Edit;
> public:
> 	============================================================
> 	CComboView() : m_Edit(this, 1)
> 	{
> 	}
> 	============================================================
> 	~CComboView()
> 	{
> 	}
> 	
> protected:
> 	BEGIN_MSG_MAP(CComboView)
> 		MSG_WM_CREATE(OnCreate)
> 		ALT_MSG_MAP(1) // edit control
> 			MSG_WM_CHAR(OnEditChar)
> 		REFLECT_NOTIFICATIONS()
> 	END_MSG_MAP()
> 	
> 	============================================================
> 	LRESULT OnCreate(LPCREATESTRUCT /*lpCreateStruct*/)
> 	{
> 		HWND hwndEdit = GetDlgItem(1001);
> 		if(hwndEdit == NULL)
> 		{
> 			CPoint pt(::GetSystemMetrics(SM_CXFIXEDFRAME), ::GetSystemMetrics(SM_CYFIXEDFRAME));
> 			hwndEdit = ChildWindowFromPoint(pt);
> 		}
> 		ATLASSERT(hwndEdit != NULL);
> 		ATLVERIFY(m_Edit.SubclassWindow(hwndEdit));
>                 return 0;
> 	}
> 	============================================================
> 	LRESULT OnChar(TCHAR ch, UINT /*cRepeat*/, UINT /*flags*/)
> 	{
> 		switch(ch){
> 			case _T('\r'):
> 			// process when the enter key is pressed, return 0 if processed message
> 		}
> 		SetMsgHandled(FALSE);
>                 return 0;
> 	}
> };
> 
> --- In [email protected], "jan702189" <stetka@> wrote:
> >
> > The problem I'm having with the following code is that I can't enter any text into the edit control. CComboView.Create(...) is called from my app.
> > 
> > 
> > WNDPROC lpfnEditWndProc; // original wndproc for the combo box 
> > // Prototypes
> > LRESULT CALLBACK SubClassProc( HWND, UINT, WPARAM, LPARAM );
> > 
> > 
> > template< class T, class TBase = CWindow, class TWinTraits = CControlWinTraits >
> > class ATL_NO_VTABLE CComboImpl : 
> >    public CWindowImpl< T, TBase, TWinTraits >
> > 
> > {
> > public:
> > 	CComboBox ctl;
> > 
> > 
> > 	BEGIN_MSG_MAP(CComboView)	
> > 	
> > 		MESSAGE_HANDLER(WM_CREATE, OnCreate)
> > END_MSG_MAP()
> > 
> >    LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL&
> > /*bHandled*/)
> > 	{
> > 
> > 		//ModifyStyle(WS_CLIPCHILDREN, SS_NOTIFY);
> > 		
> > 		RECT rfc;
> > 	rfc.bottom=200;
> > 	rfc.left=rfc.top=0;
> > 	rfc.right=800;
> > 		ctl.Create(m_hWnd, rfc, NULL, WS_CHILD | WS_VISIBLE|CBS_DROPDOWN);
> > 	
> > 	lpfnEditWndProc = (WNDPROC) ::SetWindowLong(hEdit, 
> >                 GWL_WNDPROC, (DWORD) SubClassProc); 
> > 
> > 	return 0;
> > 	}
> > 
> > };
> > 
> > 
> > class CComboView : public CComboImpl<CComboView>
> > {
> > public:
> > 	//DECLARE_WND_SUPERCLASS(NULL, CComboBox::GetWndClassName())
> > 	//DECLARE_WND_CLASS(NULL)
> > 	BEGIN_MSG_MAP(CComboView)
> > 			CHAIN_MSG_MAP(CComboImpl<CComboView>);
> > 	END_MSG_MAP()
> > };
> > LRESULT CALLBACK SubClassProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) 
> > { 		
> >     switch (msg) 
> >     {         
> > 		case WM_CHAR: 
> > 			//{
> > 				
> >             switch (wParam) 
> >             { 
> > 
> >                 case VK_RETURN: 
> > 
> > 					/*TODO: work out what to do with combobox text*/
> >                     return 0; 
> >             }
> > 			//}
> >     } 
> >  
> >     // Call the original window procedure for default processing. 
> >  
> >     return CallWindowProc(lpfnEditWndProc, hwnd, 
> >         msg, wParam, lParam); 
> > }
> >
>




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