21. Why doesn't my context menu dismiss properly when I click elsewhere?
This is a known problem with TrackPopupMenu. The cure is
simple, though somewhat obscure. Immediately before you call TrackPopupMenu, make a call
to SetForegroundWindow for your menu's owner window. Then immediately after the call to
TrackPopupMenu, post the same window a WM_NULL message. Bizarre, but it works. Look at
this sample code:
HMENU hQuick = ::GetSubMenu (m_hUtility,
IDM_QUICK);
POINT CurPos ;
GetCursorPos (&CurPos);
SetForegroundWindow (); // Bodge
TrackPopupMenu (hQuick,
TPM_LEFTBUTTON,
CurPos.x,
CurPos.y,
0,
GetSafeHwnd(),
NULL);
PostMessage (WM_NULL, 0, 0); // Bodge
