VioPrtSc

Bindings:  C, MASM 

This call is issued by the Session Manager when the operator presses 
PrtSc. 

 VioPrtSc  (VioHandle) 
 

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

 rc (USHORT) - return 
    Return code descriptions are: 

    0         NO_ERROR 
    355       ERROR_VIO_MODE 
    402       ERROR_VIO_SMG_ONLY 
    436       ERROR_VIO_INVALID_HANDLE 
    465       ERROR_VIO_DETACHED 
 
 Remarks 

 VioPrtSc supports text modes 0 through 3, and 7. An Alternate Video 
 Subsystem may want to register a replacement for VioPrtSc. An advanced 
 video subsystem could set a graphics mode while the mode known to the 
 base video subsystem PrtSc routine is text.  Then, if the operator 
 presses PrtSc, the printer output is unpredictable. VioPrtSc is reserved 
 for use by the session manager.  Application programs may not issue 
 VioPrtSc. 

 Three beeps are generated if a hard error is detected while writing to 
 the printer.