VioScrollLf: Difference between revisions
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This call scrolls the entire display buffer (or area specified within the display buffer) to the left. | This call scrolls the entire display buffer (or area specified within the display buffer) to the left. | ||
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==Return Code== | ==Return Code== | ||
;rc (USHORT) - return:Return code descriptions are: | |||
Return code descriptions are: | * 0 NO_ERROR | ||
* 0 | * 355 ERROR_VIO_MODE | ||
* 355 | * 358 ERROR_VIO_ROW | ||
* 358 | * 359 ERROR_VIO_COL | ||
* 359 | * 436 ERROR_VIO_INVALID_HANDLE | ||
* 436 | * 465 ERROR_VIO_DETACHED | ||
* 465 | |||
==Remarks== | ==Remarks== | ||
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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 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 = 65535 (or -1 in assembler language), the entire screen is filled with the character-attribute pair defined by Cell. | If TopRow and LeftCol = 0 and if BotRow, RightCol, and Lines = 65535 (or -1 in assembler language), the entire screen is filled with the character-attribute pair defined by Cell. | ||
== | ==Bindings== | ||
=== C | === C === | ||
<PRE> | <PRE> | ||
#define INCL_VIO | #define INCL_VIO | ||
USHORT rc = VioScrollLf(TopRow, LeftCol, BotRow, RightCol, Lines, Cell, | USHORT rc = VioScrollLf(TopRow, LeftCol, BotRow, RightCol, Lines, Cell, VioHandle); | ||
USHORT | USHORT TopRow; /* Top row */ | ||
USHORT | USHORT LeftCol; /* Left column */ | ||
USHORT | USHORT BotRow; /* Bottom row */ | ||
USHORT | USHORT RightCol; /* Right column */ | ||
USHORT | USHORT Lines; /* Number of lines */ | ||
PBYTE | PBYTE Cell; /* Cell to be written */ | ||
HVIO | HVIO VioHandle; /* Video Handle */ | ||
USHORT | USHORT rc; /* return code */ | ||
</PRE> | </PRE> | ||
===MASM | ===MASM=== | ||
<PRE> | <PRE> | ||
EXTRN VioScrollLf:FAR | EXTRN VioScrollLf:FAR | ||
Latest revision as of 15:32, 3 January 2019
This call scrolls the entire display buffer (or area specified within the display buffer) to the left.
Syntax
VioScrollLf (TopRow, LeftCol, BotRow, RightCol, Lines, Cell, VioHandle)
Parameters
- TopRow (USHORT) - input
- Top row to be scrolled.
- LeftCol (USHORT) - input
- Left column to be scrolled.
- BotRow (USHORT) - input
- Bottom row to be scrolled.
- RightCol (USHORT) - input
- Right column to be scrolled.
- Lines (USHORT) - input
- Number of columns to be inserted at the right of the screen area being scrolled. If 0 is specified, no lines are scrolled.
- Cell (PBYTE) - input
- Address of the character attribute(s) pair (2 or 4 bytes) used as a fill character on inserted columns.
- VioHandle (HVIO) - input
- This must be zero unless the caller is a Presentation Manager application, in which case it must be the value returned by VioGetPs.
Return Code
- rc (USHORT) - return
- Return code descriptions are:
- 0 NO_ERROR
- 355 ERROR_VIO_MODE
- 358 ERROR_VIO_ROW
- 359 ERROR_VIO_COL
- 436 ERROR_VIO_INVALID_HANDLE
- 465 ERROR_VIO_DETACHED
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 = 65535 (or -1 in assembler language), the entire screen is filled with the character-attribute pair defined by Cell.
Bindings
C
#define INCL_VIO USHORT rc = VioScrollLf(TopRow, LeftCol, BotRow, RightCol, Lines, Cell, VioHandle); USHORT TopRow; /* Top row */ USHORT LeftCol; /* Left column */ USHORT BotRow; /* Bottom row */ USHORT RightCol; /* Right column */ USHORT Lines; /* Number of lines */ PBYTE Cell; /* Cell to be written */ HVIO VioHandle; /* Video Handle */ USHORT rc; /* return code */
MASM
EXTRN VioScrollLf:FAR INCL_VIO EQU 1 PUSH WORD TopRow ;Top row PUSH WORD LeftCol ;Left column PUSH WORD BotRow ;Bottom row PUSH WORD RightCol ;Right column PUSH WORD Lines ;Number of lines PUSH@ OTHER Cell ;Cell to be written PUSH WORD VioHandle ;Video Handle CALL VioScrollLf Returns WORD