BOOL TrackPopupMenu(
HMENU hMenu, // handle to shortcut menu
UINT uFlags, // options
int x, // horizontal position
int y, // vertical position
int nReserved, // reserved, must be zero
HWND hWnd, // handle to owner window
CONST RECT *prcRect // ignored
);
TPM_LEFTBUTTON If this flag is set, the user can select menu items with only the left mouse button.
TPM_RIGHTBUTTON If this flag is set, the user can select menu items with both the left and right mouse buttons.
