DosSavRedrawWait

This is a helper for performing screen save/restore operations. This will be called by the session manager to signal the thread that does save/restore what operation is to be done.

Syntax
APIRET16 Pascal far DOSSAVREDRAWWAIT(short viohdl,short* ptr,short flag)

Parameters

 * viohdl : VIO Handle of the screen group
 * ptr : a pointer to an address (to signal save/restore thread what to do?)
 * flag
 * 0 do save and restore
 * 1 do only restore