System Variables

Artículo
06/18/2008

The following system variables are available in Visual FoxPro.

A

Use	To
_ASCIICOLS System Variable	Specify the number of columns in an ASCII text file created with the ASCII keyword in the REPORT FORM command.
_ASCIIROWS System Variable	Specify the number of rows in an ASCII text file created with the ASCII keyword in the REPORT FORM command.

B

Use	To
_BEAUTIFY System Variable	Specify the beautification application for Visual FoxPro programs.
_BROWSER System Variable	Specify the name of the class browser application to use for browsing classes.
_BUILDER System Variable	Specify the name of the Visual FoxPro builder application.

C

Use	To
_CALCMEM System Variable	Specify the numeric value that Microsoft Visual FoxPro stores in the Calculator's memory.
_CALCVALUE System Variable	Specify the numeric value that the Calculator displays initially.
_CLIPTEXT System Variable	Specify the contents of the Clipboard.
_CODESENSE System Variable	Specify the name of the application that provides functionality for the IntelliSense Manager.
_CONVERTER System Variable	Specify the name of the Microsoft Visual FoxPro converter application.
_COVERAGE System Variable	Specify the name of the Visual FoxPro application that creates the Debugger coverage and profiler output.

D

Use	To
_DBLCLICK System Variable	Specify the time interval between double and triple mouse clicks.
_DIARYDATE System Variable	Specify the current date in the Calendar/Diary.
_DOS System Variable	Included for backward compatibility.

F

Use	To
_FOXCODE System Variable	Specify the name of the table file used for Visual FoxPro IntelliSense.
_FOXREF System Variable	Specify the name of the application that provides the Code References tool.
_FoxTask System Variable	Specify the name of the FOXTASK table that supports Visual FoxPro Task Manager.

G

Use	To
_GALLERY System Variable	Specify the program that is executed when you choose Component Gallery from the Tools menu.
_GENHTML System Variable	Specify an HTML (Hypertext Markup Language) generation program.
_GENMENU System Variable	Specify a menu generation program.
_GETEXPR System Variable	Specify the program that is executed when you issue the GETEXPR command or invoke the Expression Builder dialog box from within Visual FoxPro.

I

Use	To
_INCSEEK System Variable	Specify the time interval that is open for keystrokes within an incremental seek such as within a Listbox or ComboBox control.
_INCLUDE System Variable	Specify a default header file included with user-defined classes, forms, or form sets.

M

Use	To
_MAC System Variable	Included for backward compatibility.
_MLINE System Variable	Specify the memo field offset for the MLINE( ) function.

O

Use	To
_ObjectBrowser System Variable	Specify the name of the object browser application.

P

Use	To
_PAGENO System Variable	Specify the current page number.
_PAGETOTAL System Variable	Specify the total number of pages in a report.
_PRETEXT System Variable	Specify a character expression to preface text merge lines.

R

Use	To
_REPORTBUILDER System Variable	Set the Visual FoxPro handler application for Report Designer and Label Designer events.
_REPORTOUTPUT System Variable	Set the Visual FoxPro handler application for the OBJECT TYPE <n> clause of the REPORT FORM command, and maintain a registry of ReportListener classes for different output results.
_REPORTPREVIEW System Variable	Set the Visual FoxPro handler application providing a PreviewContainer reference to ReportListener objects.

S

Use	To
_SAMPLES System Variable	Specify the path of the directory in which the Microsoft Visual FoxPro samples are installed.
_SCCTEXT System Variable	Specify a Visual FoxPro conversion program that handles translating Visual FoxPro binary files into text equivalents and back.
_SCREEN System Variable	Specify properties and methods for the main Visual FoxPro window. You can use _SCREEN to manipulate the main Visual FoxPro window as an object. There are two versions of the syntax.
_SHELL System Variable	Specify a program shell.
_SPELLCHK System Variable	Specify a spelling checker program for the Visual FoxPro text editor.
_STARTUP System Variable	Specify the name of the application that runs when you start Visual FoxPro.

T

Use	To
_TASKLIST System Variable	Specify the name of the task list manager program.
_TASKPANE System Variable	Specify the path and file name for the Visual FoxPro Task Pane Manager.
_TALLY System Variable	Specify the number of records processed by the most recently executed table command.
_TEXT System Variable	Direct output from the \ \| \\ and TEXT ... ENDTEXT text merge commands to a low-level file.
_THROTTLE System Variable	Specify the execution speed of programs when the Trace window is open.
_TOOLBOX System Variable	Specify the path and file name for the Visual FoxPro Toolbox
_TRIGGERLEVEL System Variable	Read the value indicating the current trigger procedure nesting level.

U

Use	To
_UNIX System Variable	Included for backward compatibility.

V

Use	To
_VFP System Variable	Reference the Application object for the current instance of Visual FoxPro.

W

Use	To
_WINDOWS System Variable	Included for backward compatibility.
_WIZARD System Variable	Specify the name of the Visual FoxPro wizard application.

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