Q37094: WIDTH Clears the Screen When Setting EGA 43-Line Mode

Article: Q37094
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | B_BasicCom | mspl13_basic
Last Modified: 14-DEC-1989

The WIDTH statement blanks the screen when the following command is
executed in an EGA screen mode (such as SCREEN 9):

   WIDTH 80,43

The screen clears because the information that was stored in the
previous 25-line (default) screen is no longer in a valid format to be
redisplayed in EGA 43-line mode.

This information applies to Microsoft QuickBASIC Versions 4.00, 4.00b,
and 4.50 for MS-DOS, to Microsoft BASIC Compiler Versions 6.00 and
6.00b for MS-DOS, and to Microsoft BASIC PDS (Professional Development
System) Version 7.00 for MS-DOS.