63 lines
2.5 KiB
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63 lines
2.5 KiB
HTML
<HTML>
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<HEAD><TITLE>QuickBASIC 3.0 - Long Entry</TITLE></HEAD>
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<PRE>
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<B>VIEW Define Screen Window</B>
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<B>VIEW</B> [[SCREEN][(<U>x1</U>,<U>y1</U>)-(<U>x2</U>,<U>y2</U>)[,[<U>color</U>][,[<U>border</U>]]]]]
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Defines a screen subset, or viewport.
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SCREEN If omitted, the coordinates of all subsequent graphics
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statements are measured relative to the defined viewport,
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whose upper left corner becomes 0,0. If included, 0,0 is
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still the upper left corner of the screen, but only those
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points that fall within the defined viewport are visible.
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<U>x1</U>,<U>y1</U>,<U>x2</U>,<U>y2</U> Corner coordinates of the viewport.
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<U>colo</U>r If included, QuickBASIC fills the viewport with the
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specified color. Allowed values are 0 to 3 in medium
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resolution, 0-1 in high resolution.
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<U>borde</U>r If included, QuickBASIC draws a border, in a specified
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color, around the defined viewport. Allowed values are 0
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to 3 in medium resolution, 0-1 in high resolution.
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----------------------------------------------------------------------
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<B>Notes:</B> QuickBASIC sorts the coordinates <U>x1</U>, <U>x2</U>, <U>y1</U>, and <U>y2</U>, so
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that the lower value of <U>x</U> and the lower value of y specify
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the upper left corner, regardless of how the coordinates
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are presented; i.e., VIEW (280,120)-(140,180) would be
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equivalent to VIEW (140,120)-(280,180).
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VIEW with no argument redefines the viewport to the full
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screen.
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Multiple viewports may be defined, but only the most
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recent definition is active.
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A defined viewport is disabled by a RUN statement or a
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change in SCREEN attributes.
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With a viewport in effect, CLS clears only the viewport,
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not the entire screen.
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</PRE>
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<HR>
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<B>See Also:</B>
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<A HREF="ng33e32.html">WINDOW</A>
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This page created by ng2html v1.05, the Norton guide to HTML conversion utility.
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Written by <A HREF="http://www.acemake.com/hagbard">Dave Pearson</A>
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