Re: System tray menu questions.

Hi all.

I have two questions regarding a very simple tray application. The
application does nothing. It only appears in the system tray. I want
to add a floating menu to it with a "close" menu item that will close
the process. The application is an MFC dialog based application. I
work with VS2008.

My questions are:

1. I added a message handler to the "close" menu item. The handler is
called only after I first r-clicking the app icon, select the "close"
item and again r-clicking the app icon in the tray. Why?

2. Then, I put SendMessage(WM_CLOSE) in the handler. The application
was not closed. Why?

The code is as follows:

//-----------------------------------------------------------------
cpp file
//-----------------------------------------------------------------

BEGIN_MESSAGE_MAP(CVPGAgentDlg, CDialog)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_MESSAGE(MYWM_NOTIFYICON,onTrayNotify)
//}}AFX_MSG_MAP
ON_WM_DESTROY()
ON_WM_CLOSE()
ON_COMMAND(ID_AGENTMENU_CLOSE, OnAgentClose)
END_MESSAGE_MAP()

void CVPGAgentDlg::SetSysTrayIcon(void)
{
HICON m_hicon = ::LoadIcon(AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDI_SYSTRAYICON));

CString sTip(_T("PA Agent"));

m_pnId.cbSize = sizeof(NOTIFYICONDATA);
m_pnId.hWnd = this->GetSafeHwnd();
m_pnId.uID = IDI_SYSTRAYICON;
//ICON RESOURCE ID
m_pnId.uFlags = NIF_MESSAGE|NIF_ICON;
m_pnId.uCallbackMessage = MYWM_NOTIFYICON;
m_pnId.uFlags = NIF_MESSAGE|NIF_ICON|NIF_TIP;
m_pnId.hIcon = m_hicon;
//ICON RESOURCE ID
lstrcpyn(m_pnId.szTip, (LPCTSTR)sTip, sizeof(m_pnId.szTip));

DWORD dwMessage = NIM_ADD;
Shell_NotifyIcon(dwMessage, &m_pnId);

m_TrayMenu.LoadMenu(IDR_MENU1);
}

LRESULT CVPGAgentDlg::onTrayNotify(WPARAM wParam,LPARAM lParam)
{
UINT uMsg = (UINT) lParam;
switch (uMsg )
{
case WM_LBUTTONDBLCLK:
this->ShowWindow(SW_SHOW);
break;
case WM_RBUTTONUP:
CPoint pt;
GetCursorPos(&pt);

SetForegroundWindow();
   m_TrayMenu.GetSubMenu(0)->TrackPopupMenu(TPM_RIGHTALIGN|
TPM_LEFTBUTTON|TPM_RIGHTBUTTON,pt.x,pt.y,this);
PostMessage(WM_NULL, 0, 0);

break;
}
return TRUE;
}

void CVPGAgentDlg::OnAgentClose()
{
AfxMessageBox("a");
//SendMessage(WM_CLOSE);
}

void CVPGAgentDlg::OnDestroy()
{
Shell_NotifyIcon(NIM_DELETE,&m_pnId);
CDialog::OnDestroy();

// TODO: Add your message handler code here
}

//-----------------------------------------------------------------
h file:
//-----------------------------------------------------------------
#define MYWM_NOTIFYICON (WM_USER+1)

CMenu m_TrayMenu;
NOTIFYICONDATA m_pnId;

void SetSysTrayIcon(void);

afx_msg LRESULT onTrayNotify(WPARAM, LPARAM);
afx_msg void OnAgentClose();
afx_msg void OnClose();
afx_msg void OnDestroy();

THANKS!