VioPrtScToggle

This call is called by the Session Manager when the operator presses Ctrl and PrtSc.

VioPrtScToggle

(VioHandle)

VioHandle (HVIO) - input

Reserved word of 0s.
rc (USHORT) - return
Return code descriptions are:
• NO_ERROR 355
  ERROR_VIO_MODE
  402
  ERROR_VIO_SMG_ONLY
  430
  ERROR_VIO_ILLEGAL_DURING_POPUP
  436
  ERROR_VIO_INVALID_HANDLE
  465
  ERROR_VIO_DETACHED
  Remarks

  VioPrtScToggle toggles the Ctrl and PrtSc state of the foreground session. When the Ctrl and PrtSc state is on, all VioWrtTTY calls from that session are echoed to the print device.

  VioPrtScToggle can only be called by the session manager. If an application issues this call, it receives an error code.

  Three beeps are generated if a hard error is detected while writing to the printer. When Ctrl and PrtSc is turned off, the operator may have to press the Enter key to cause output spooled while Ctrl and PrtSc was active to be printed. This is because the spool files are closed when the next VioWrtTTY is executed in the session, such as writing the prompt in response to the Enter key.

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