How do I place an icon in the system tray?

This loads the systray icon, giving it an ID because I have more than one
tray icon. The private message is also specified.
#define TRAY_ICON_01 1
#define MY_SYSTEM_TRAY_ICON (WM_APP+1657)

// Note that a registered message would be better, I'm simplifying here.

void CMainFrame::AddMyIcon (void)
{
NOTIFYICONDATA nid;
CString csTip ;

nid.cbSize = sizeof(NOTIFYICONDATA);
nid.hWnd = GetSafeHwnd();
nid.uID = TRAY_ICON_01; // personal ID
nid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
nid.uCallbackMessage = MY_SYSTEM_TRAY_MSG;
nid.hIcon = m_hIconPhone ;

if (csTip.LoadString (IDS_TRAY_MENU_TIP))
strncpy (nid.szTip, csTip, sizeof(nid.szTip));
else
nid.szTip[0] = '\0';

Shell_NotifyIcon(NIM_ADD, &nid);
}
This appears in the mainframe message map, and specifies a message sent when the user
interacts with the icon. Note that the message ID matches that specified in the uCallbackMessage structure member.
ON_MESSAGE (MY_SYSTEM_TRAY_MSG, OnSystemTrayIconClick)
This handles the click message declared above.
afx_msg LONG CMainFrame::OnSystemTrayIconClick (WPARAM wParam, LPARAM lParam)
{
switch (wParam)
{
// bunch of other code omitted here. Note that the
// ID here matches that specified when the icon
// was inserted, in the uID structure member.

case TRAY_ICON_01:

switch (lParam)
{
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
ShowLittleMenu ();
break ;
}
break ;

default:
OutputDebugString ("invalid icon id from tray\n");
break ;
}

return TRUE ;
}
This shows the menu for the systray icon. The popup menu is loaded elsewhere (and it MUST be a popup, or you'll get a bizarre minimal-width empty menu appearing). The easiest way is to create a single bar menu with several popups, load that, and use GetSubMenu to choose the one you want for any particular circumstance.
void CMainFrame::ShowLittleMenu ()
{
POINT CurPos ;

GetCursorPos (&CurPos);
SetForegroundWindow ();// Bodge to get around a documented bug in Explorer

// Display the menu. m_hLittleMenu is a popup loaded elsewhere.

TrackPopupMenu (m_hLittleMenu,
TPM_LEFTBUTTON,
CurPos.x,
CurPos.y,
0,
GetSafeHwnd(),
NULL);

PostMessage (WM_NULL, 0, 0);// Bodge to get around a documented bug in Explorer
}

Author : Bob Moore