QBasic 1.1: PRESET Statement

Explanation

PRESET, PSET Statements

Draw a specified point on the screen.

Worth knowing

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

ASCII Code Tables
Keyboard Scan Codes
Syntax Conventions
Screen Modes
Color Attributes
Error Codes

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Syntax

PRESET [STEP] (x!,y!) [,color%]

PSET [STEP] (x!,y!) [,color%]

Description / Parameter(s)

STEP	Specifies that the x! and y! are expressed relative to the current graphics cursor location.
(x!,y!)	The screen coordinates of the pixel to be set.
color%	A color attribute that sets the pixel color. If color% is omitted, PRESET uses the current background and PSET uses the current foreground color.
Available color attributes depend on your graphics adapter and screen mode. Coordinate values depend on the graphics adapter, screen mode, and most recent VIEW and WINDOW statements.

Example


'This example requires a color graphics adapter.
SCREEN 1
FOR i% = 0 TO 320
  PSET (i%, 100)
  FOR delay% = 1 TO 100: NEXT delay%
  PRESET (i%, 100)
NEXT i%