VG3_sysmenu_lastcall()

time_t VG3_sysmenu_lastcall(struct vg3_sysmenu *sysm)

Returns the timestamp of the last call of the system-menu in seconds.

To be informed, if key-definitions in the system-menu were changed, save the last timestamp of the call of the system-menu, then check it with this function. When changed, the function VG3_sysmenu_getkeyval() may be used to get the new key-definitions.