>I want to know which API can do:
>
>a) run Screen Saver (e.g. ndshow1.scr)

Hi Justok,

I'll have to research the others, but here's how to activate the screen saver.

#define WM_SYSCOMMAND 0x0112
#define SC_SCREENSAVE 0xF140
DECLARE INTEGER SendMessage IN Win32API;
  INTEGER hwnd,	INTEGER uMsg,;
  INTEGER wParam, INTEGER lParam
DECLARE INTEGER GetDesktopWindow IN Win32API
lnhWnd = GetDesktopWindow()
= SendMessage(lnhWnd, WM_SYSCOMMAND, SC_SCREENSAVE, 0)