System Variables Overview
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System Variables Overview

Visual Studio .NET 2003

System variables are built-in variables that Visual FoxPro creates and maintains automatically. They are PUBLIC by default, but you can declare them PRIVATE.

Note   The functionality of many system variables has been replaced by new features in Visual FoxPro. For details, see the description for each system variable.

The following table lists the five types of Visual FoxPro system variables and their designation in expressions:

Variable type Description Expression
C Character cExpression
D Date dExpression
L Logical lExpression
N Numeric nExpression
O Object oExpression

The following table lists all system variables — their types and default values:

Variable Type Default value
_ALIGNMENT C LEFT
_ASCIICOLS N 80
_ASCIIROWS N 63
_ASSIST C Empty string
_BEAUTIFY C Empty string
_BOX L .T.
_BROWSER C Browser.app
_BUILDER C Builder.app
_CALCMEM N 0.0
_CALCVALUE N 0.0
_CLIPTEXT C Empty string
_CONVERTER C Convert.app
_COVERAGE C Coverage.app
_CUROBJ N -1
_DBLCLICK N 0.5
_DIARYDATE D Current date
_DOS L .T. in FoxPro for MS-DOS
_FOXDOC C Empty string
_GALLERY C Gallery.app
_GENGRAPH C Empty string
_GENHTML C Genhtml.prg
_GENMENU C Genmenu.prg
_GENPD C Empty string
_GENSCRN C Genscrn.prg
_GENXTAB C Empty string
_GETEXPR C Empty string
_INCLUDE C Empty string
_INDENT N 0
_LMARGIN N 0
_MAC L .T. in Visual FoxPro for Macintosh
_MLINE N 0
_PADVANCE C FORMFEED
_PAGENO N 1
_PBPAGE N 1
_PCOLNO N Current column
_PCOPIES N 1
_PDRIVER C Empty string
_PDSETUP C Empty string
_PECODE C Empty string
_PEJECT C NONE
_PEPAGE N 32767
_PLENGTH N 66
_PLINENO N 0
_PLOFFSET N 0
_PPITCH C DEFAULT
_PQUALITY L .F.
_PRETEXT C Empty string
_PSCODE C Empty string
_PSPACING N 1
_PWAIT L .F.
_RMARGIN N 80
_RUNACTIVEDOC C Runactd.prg
_SAMPLES C HOME() + "SAMPLES"
_SCCTEXT C Scctext.prg
_SCREEN O FORM
_SHELL C Empty string
_SPELLCHK C Spellchk.app
_STARTUP C Empty string
_TABS C Empty string
_TALLY N 0
_TEXT C –1
_THROTTLE N 0
_TRANSPORT C Empty string
_TRIGGERLEVEL N 0
_UNIX L .T. in FoxPro for UNIX
_VFP O Microsoft Visual FoxPro Application 7.0
_WINDOWS L .T. in Visual FoxPro for Windows
_WIZARD C Wizard.app
_WRAP L .F.

See Also

PUBLIC | PRIVATE | STORE

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