Reserved (ULONG) - input

Reserved. Must be 0.

CodePageID (PUSHORT) - output

Code-page ID.

The address of a word in the application's data area. The current video code page is returned in this word.

VioHandle (HVIO) - input

Presentation-space handle.

This must be 0, unless the caller is a Presentation Manager application; in this case, it must be the value returned by VioCreatePS.

rc (APIRET) - returns

Return code.

VioGetCp returns one of the following values:

• NO_ERROR 355
  ERROR_VIO_MODE
  421
  ERROR_VIO_INVALID_PARMS
  436
  ERROR_VIO_INVALID_HANDLE

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