Sent to a WIMMessageCallback function to tell the caller that a stale mount directory is being removed.
WIM_MSG_WARNING_STALE_MOUNT_DIR wParam = (PWSTR) pszFullPath; lParam = (DWORD) 0;
Parameters
wParam
[in] A pointer to a null-terminated string containing the full file path of the stale mount directory.
lParam
[in] Unused.
Return Value
Your routine must return WIM_MSG_SUCCESS.