This piece of code, if inserted into the windows procedure in a Win32
program, should disable automatic monitor powerdown and any installed
screen savers.

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LONG WINAPI WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg)
		{
		// disable screen saver and monitor power down
		// messages
		case WM_SYSCOMMAND:
			{
			switch (wParam)
				{
				case SC_SCREENSAVE:
				case SC_MONITORPOWER:
					return 0;
					break;

				default:
					break;
				}
			}

		[other switch cases]

		}

	// default action
    return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

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