GWBASIC User's Manual

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GW-BASIC <strong>User's</strong> Guide array must be dimensioned large enough to set all the palette entries after arrayindex. For example, if you are assigning colors to all 16 attributes, and the index of the first array element given in your PALETTE USING statement is 5, then the array must be dimensioned to hold at least 20 elements (since the number of elements from 5-20, inclusive, is 16): DIM PAL%(20) . . . PALETTE USING PAL%(5) If the color argument in an array entry is -1, then the mapping for the associated attribute is not changed. All other negative numbers are illegal values for color. You can use the color argument in the COLOR statement to set the default text color. (Remember that color arguments in other BASIC statements are actually what are called attributes in this discussion.) This color argument specifies the way that text characters appear on the display screen. Under a common initial palette setting, points colored with the attribute 0 appear as black on the display screen. Using the PALETTE statement, you could, for example, change the mapping of attribute 0 from black to white. Remember that a PALETTE statement executed without any parameters assigns all attributes their default colors. The following table lists attribute and color ranges for various monitor types and screen modes: Table 1 SCREEN Color and Attribute Ranges SCREEN Attribute Color Mode Monitor Attached Adapter Range Range 0 Monochrome MDPA NA NA Monochrome EGA 0-15 0-2 Color CGA NA 0-31a Color/Enhancedd EGA 0-31a 0-15 1 Color CGA NA 0-3 Color/Enhancedd EGA 0-3 0-15 2 Color CGA NA 0-1 Color/Enhancedd EGA 0-1 0-15 7 Color/Enhancedd EGA 0-15 0-15 8 Color/Enhancedd EGA 0-15 0-15 9 Enhancedd EGAb 0-3 0-15 file:///C|/Documents%20and%20Settings/Lorenzo/Desktop/GW%20Basic/PALETTE.html (2 of 3)28/03/2004 21.29.16
GW-BASIC <strong>User's</strong> Guide Enhanced d EGA c 0-15 0-63 10 Monochrome EGA 0-3 0-8 a Attributes 16-31 refer to blinking versions of colors 0-15 b With 64K of EGA memory c With greater than 64K of EGA memory d IBM Enhanced Color Display NA = Not Applicable CGA = IBM Color Graphics Adapter EGA = IBM Enhanced Graphics Adapter MDPA = IBM Monochrome Display and Printer Adapter See the SCREEN statement reference page for the list of colors available for various SCREEN mode, monitor, and graphics adapter combinations. Examples: PALETTE 0, 2 'Changes all points colored with attribute 0 'to color 2 PALETTE 0,-1 'Does not modify the palette PALETTE USING A%(0) 'Changes each palette entry. Since the 'array is initialized to zero when it 'is first declared, all attributes are 'now mapped to display color zero. The 'screen will now appear as one single 'color. However, it will still be 'possible to execute BASIC statements. PALETTE 'Sets each palette entry to its appropriate 'initial display color. Actual initial colors 'depend on your screen hardware configuration. file:///C|/Documents%20and%20Settings/Lorenzo/Desktop/GW%20Basic/PALETTE.html (3 of 3)28/03/2004 21.29.16
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GWBASIC User's Manual User's Guide
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GWBASIC User's Manual FILES Command
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GWBASIC User's Manual PSET Statemen
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GW-BASIC User's Guide Chapter 1 Wel
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GW-BASIC User's Guide The Glossary
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GW-BASIC User's Guide 2.2.2 Indirec
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GW-BASIC User's Guide Sample GW-BAS
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GW-BASIC User's Guide BASIC User's
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GW-BASIC User's Guide Appendix H Ke
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GW-BASIC User's Guide KEY(n) n is a
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GW-BASIC User's Guide STRIG Trappin
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GW-BASIC User's Guide KEY(n) Statem
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GW-BASIC User's Guide LOC(x) Return
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GW-BASIC User's Guide 15 KEY OFF:CL
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GW-BASIC User's Guide To save a fil
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GW-BASIC User's Guide Hexadecimal H
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GW-BASIC User's Guide The GW-BASIC
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GW-BASIC User's Guide The arithmeti
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GW-BASIC User's Guide Modulus arith
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GW-BASIC User's Guide EQV X Y X EQV
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GW-BASIC User's Guide RUN FILENAME
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GW-BASIC User's Guide OPTION BASE S
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GW-BASIC User's Guide LET Statement
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GW-BASIC User's Guide . . 400 R=1:
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GW-BASIC User's Guide ● Sequentia
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GW-BASIC User's Guide The program i
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GW-BASIC User's Guide PUT #1, CODE%
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GW-BASIC User's Guide number. Lines
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GW-BASIC User's Guide Appendix A Er
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GW-BASIC User's Guide 18 Undefined
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GW-BASIC User's Guide 59-60Unprinta
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GW-BASIC User's Guide 75 Path/File
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GW-BASIC User's Guide Appendix C AS
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GW-BASIC User's Guide Appendix D As
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GW-BASIC User's Guide that the code
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GW-BASIC User's Guide converted to
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GW-BASIC User's Guide DEF USR State
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GW-BASIC User's Guide USR Function
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GW-BASIC User's Guide E.3 Multiple
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GW-BASIC User's Guide 8 8 18 24 90
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Page 117 and 118: GW-BASIC User's Guide ABS Function
Page 119 and 120: GW-BASIC User's Guide CHR$ Function
Page 121 and 122: GW-BASIC User's Guide AUTO Command
Page 123 and 124: GW-BASIC User's Guide BLOAD Command
Page 125 and 126: GW-BASIC User's Guide BSAVE Command
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Page 129 and 130: GW-BASIC User's Guide CDBL Function
Page 131 and 132: GW-BASIC User's Guide INT Function
Page 133 and 134: GW-BASIC User's Guide CHAIN Stateme
Page 135 and 136: GW-BASIC User's Guide MERGE Command
Page 137 and 138: GW-BASIC User's Guide CIRCLE Statem
Page 139 and 140: GW-BASIC User's Guide COLOR Stateme
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Page 161 and 162: GW-BASIC User's Guide PRESET and PS
Page 163 and 164: GW-BASIC User's Guide CLEAR Command
Page 165 and 166: GW-BASIC User's Guide CLOSE Stateme
Page 167 and 168: GW-BASIC User's Guide COM(n) Statem
Page 169 and 170: GW-BASIC User's Guide CONT Command
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Page 173 and 174: GW-BASIC User's Guide CVI, CVS, CVD
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Page 185 and 186: GW-BASIC User's Guide POKE Statemen
Page 187 and 188: GW-BASIC User's Guide EDIT Command
Page 189 and 190: GW-BASIC User's Guide ENVIRON State
Page 191 and 192: GW-BASIC User's Guide ENVIRON$ Func
Page 193 and 194: GW-BASIC User's Guide SHELL Stateme
Page 195 and 196: GW-BASIC User's Guide EOF Function
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GW-BASIC User's Guide EXP Function
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GW-BASIC User's Guide FIELD Stateme
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GW-BASIC User's Guide GET Statement
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GW-BASIC User's Guide FOR ... NEXT
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GW-BASIC User's Guide FRE Function
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GW-BASIC User's Guide The number of
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GW-BASIC User's Guide GOTO Statemen
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GW-BASIC User's Guide OCT$ Function
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GW-BASIC User's Guide Testing Equal
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GW-BASIC User's Guide 1070 TIMEOUT%
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GW-BASIC User's Guide INPUT Stateme
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GW-BASIC User's Guide PRINT Stateme
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GW-BASIC User's Guide STRING$ Funct
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GW-BASIC User's Guide PRINT USING S
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GW-BASIC User's Guide ** A double a
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GW-BASIC User's Guide WIDTH Stateme
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GW-BASIC User's Guide INPUT# Statem
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GW-BASIC User's Guide 100 PRINT "TY
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GW-BASIC User's Guide IOCTL Stateme
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GW-BASIC User's Guide KILL Command
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GW-BASIC User's Guide MID$ Function
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GW-BASIC User's Guide LEN FUNCTION
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GW-BASIC User's Guide LINE INPUT# S
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GW-BASIC User's Guide LLIST Command
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GW-BASIC User's Guide LOC Function
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GW-BASIC User's Guide Makes the cur
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GW-BASIC User's Guide It is expecte
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GW-BASIC User's Guide LOG Function
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GW-BASIC User's Guide MID$ Statemen
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GW-BASIC User's Guide NAME Command
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GW-BASIC User's Guide ON ERROR GOTO
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GW-BASIC User's Guide ON ... GOSUB
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GW-BASIC User's Guide RESET Command
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GW-BASIC User's Guide Examples: The
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GW-BASIC User's Guide when using GE
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GW-BASIC User's Guide PCOPY Command
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GW-BASIC User's Guide n = 5 Returns
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GW-BASIC User's Guide . (period) A
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GW-BASIC User's Guide PMAP Function
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GW-BASIC User's Guide The following
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GW-BASIC User's Guide If the string
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GW-BASIC User's Guide PUT Statement
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GW-BASIC User's Guide RANDOMIZE Sta
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GW-BASIC User's Guide RND Function
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GW-BASIC User's Guide . . . 129 FOR
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GW-BASIC User's Guide RESUME Statem
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GW-BASIC User's Guide RMDIR Command
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GW-BASIC User's Guide SAVE Command
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GW-BASIC User's Guide SGN Function
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GW-BASIC User's Guide SOUND Stateme
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GW-BASIC User's Guide SPACE$ Functi
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GW-BASIC User's Guide SQR Function
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GW-BASIC User's Guide STOP Statemen
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GW-BASIC User's Guide VAL Function
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GW-BASIC User's Guide STRIG(n) Stat
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GW-BASIC User's Guide SYSTEM Comman
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GW-BASIC User's Guide TAN Function
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GW-BASIC User's Guide 08:00:05 The
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GW-BASIC User's Guide TRON/TROFF Co
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GW-BASIC User's Guide 0 1 Mode The
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GW-BASIC User's Guide VARPTR$ Funct
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GW-BASIC User's Guide The following
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GW-BASIC User's Guide WAIT Statemen
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GW-BASIC User's Guide WINDOW Statem
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GW-BASIC User's Guide WRITE Stateme
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