OnClose 1

[bitmapbrother]

Hi, I derived class from CWnd. I need to catch OnClose event but it doesnt work. Thx for any tips.

class MyWin : public CWnd
{
protected:
afx_msg void OnClose(void);
public:
MyWin();
~MyWin(void);
bool Init(void); // creates window by CWnd::CreateEx with parent = NULL
void Show(void); // shows window by CWnd::ShowWindow
};

// this is never called after i click [X] icon in windows title
afx_msg void MyWin::OnClose(void)
{
Msg(_T("OnClose")); // Msg is customized MessageBox
CWnd::OnClose();
}

 

[OlafBogus]

Did you remember to add the

ON_WM_CLOSE()

to the message map?

BEGIN_MESSAGE_MAP(MyWin, CWnd)
	ON_WM_CLOSE()
END_MESSAGE_MAP()

 

[bitmapbrother]

Thx for tip. I added that code but it still doesnt work.

 

[OlafBogus]

Not sure how you are creating this window so here's an idea.

bool MyWin::Init(void)
{
	CString myClassName = AfxRegisterWndClass(
							CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS,
                            LoadCursor(NULL, IDC_ARROW),
                            (HBRUSH)GetStockObject(COLOR_BTNFACE+1),
							LoadIcon(NULL, IDI_APPLICATION));

	return (CWnd::CreateEx(0,
					myClassName,
				   "MyWin",
				   WS_POPUP | WS_CAPTION | WS_SYSMENU | MFS_BLOCKSYSMENU,
				   CRect(100, 100, 350, 420),NULL,NULL))?true:false;
}

Then in your main app create the window thus

	if(m_myWin)
		delete m_myWin;
	m_myWin = new MyWin();
	if(m_myWin->Init())
	{
		m_myWin->Show();
	}

where

MyWin* m_myWin;

when you press the close on this window you will be able to capture it.

If this window does not have a system menu then you will have to capture the WM_DESTROY instead.

 

[bitmapbrother]

Finally I got it working, I forget WS_CAPTION style. I am developping app for Pocket PC and CWnds are fullscreen here with caption in global system bar which has [x] icon too - but that [x] icon doesnt work like [x] icon in CWnd caption bar (it closes windows but it doesnt call mapped OnClose). Thx for suggestions Olaf.