HideWindow
HideWindow Make a window in visible
#include <Windows.h> Window Manager
void HideWindow(theWindow );
WindowPtr theWindow; the window to hide
HideWindow deactivates and makes the specified window in visible.
theWindow is a WindowPtr obtained via NewWindow or GetNewWindow.
Returns: none

Notes: If theWindow is the current active window, the window directly behind it
is activated, as if SelectWindow had been called for that window-the
hidden window will be logically moved to (but not drawn at) a position
directly behind the activated window.