VioScrollDown

Scrolls the entire display buffer (or area specified within the display buffer) down.

There had been reports on the community that this function was not implemented on the OS/2 4.5 Toolkit. 

Syntax
VioScrollDown (TopRow, LeftCol, BotRow, RightCol, Lines, Cell, VioHandle)

Parameters

 * TopRow (ULONG) - input : Top row to be scrolled.
 * LeftCol (ULONG) - input : Left column to be scrolled.
 * BotRow (ULONG) - input : Bottom row to be scrolled.
 * RightCol (ULONG) - input : Right column to be scrolled.
 * Lines (ULONG) - input : Number of lines.
 * Number of lines to be inserted at the top of the screen area being scrolled. If 0 is specified, no lines are scrolled.


 * Cell (PBYTE) - input : Cell to be written.
 * Address of the character-attribute pair (2 or 4 bytes) used as a fill character on inserted lines.


 * VioHandle (HVIO) - input : Vio 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.

Return Code
rc (APIRET) - returns VioScrollDown returns one of the following values:
 * 0         NO_ERROR
 * 355       ERROR_VIO_MODE
 * 358       ERROR_VIO_ROW
 * 359       ERROR_VIO_COL
 * 421       ERROR_VIO_INVALID_PARMS
 * 436       ERROR_VIO_INVALID_HANDLE

Remarks
TopRow = 0 and LeftCol = 0 identifies the top-left corner of the screen.

If a value greater than the maximum value is specified for TopRow, LeftCol, BotRow, RightCol, or Lines, the maximum value for that parameter is used.

If TopRow and LeftCol = 0, and if BotRow, RightCol, and Lines are greater than the screen lines, the entire screen is filled with the character-attribute pair defined by Cell.