VioSavRedrawUndo

Bindings:  C, MASM 

This call allows one thread within a process to cancel a VioSavRedrawWait 
issued by another thread within the same process. 

 VioSavRedrawUndo     (OwnerIndic, KillIndic, VioHandle) 
 

 OwnerIndic (USHORT) - input 
    Indicates whether the thread issuing VioSavRedrawUndo wants ownership 
    of VioSavRedrawWait to be reserved for its process. 

    Value     Definition 
    0         Reserve ownership 
    1         Give up ownership. 

 KillIndic (USHORT) - input 
    Indicates whether the thread with the outstanding VioSavRedrawWait 
    should be returned an error code or be terminated. 

    Value     Definition 
    0         Return error code 
    1         Terminate thread. 

 VioHandle (HVIO) - input 
    Reserved word of 0s. 

 rc (USHORT) - return 
    Return code descriptions are: 

    0         NO_ERROR 
    421       ERROR_VIO_INVALID_PARMS 
    422       ERROR_VIO_FUNCTION_OWNED 
    428       ERROR_VIO_NO_SAVE_RESTORE_THD 
    430       ERROR_VIO_ILLEGAL_DURING_POPUP 
    465       ERROR_VIO_DETACHED 
    494       ERROR_VIO_EXTENDED_SG 
 
 Remarks 

 The issuing thread can reserve ownership of VioSavRedrawWait for its 
 process or give it up. The thread whose VioSavRedrawWait was cancelled is 
 optionally terminated. VioSavRedrawUndo may be issued only by a thread 
 within the same process that owns VioSavRedrawWait.