Command Reference D-F

Commands and Keywords

A-C D-F G-K L-M N-P R-S T-Z

DATA - adds data to a program that can be read with the READ statement
DATE$( ) - return string with today's date
DECHEX$( ) - return a decimal number converted to a hexadecimal string
DefaultDir$ - a variable containing the default directory
"delsegment" - graphics command to delete drawing segment
Dialog - window type
DIM array( )  - set the maximum size of a data array
DISABLE - make a control disabled and grayed-out
"discard" - graphics command to discard unflushed drawing
DisplayWidth - a variable containing the width of the display
DisplayHeight - a variable containing the height of the display
DLL - device open mode for calldll
"down" - graphics command to lower pen
"drawbmp" - graphics command to display a bitmap
"drawsprites" - sprite command to update animation
Drives$ - special variable, holds drive letters
DO LOOP - performs a looping action until/while a condition is met
Double - data type for CALLDLL
DUMP - force the LPRINT buffer to print
DWORD - data type for calldll and structs
"ellipse" - graphics command to draw an ellipse
"ellipsefilled" - graphics command to draw a filled ellipse
ELSE - used in block conditional statements with IF/THEN
ENABLE - make a control active
END - marks end of program execution
END FUNCTION - signifies the end of a function
END IF - used in block conditional statements with IF/THEN
END SELECT - signals end of SELECT CASE construct
END SUB - signifies the end of a subroutine
EOF( #h ) - returns the end-of-file status for #h
EVAL(code$) - evaluate an expression to a numeric value
EVAL$(code$)  - evaluate an expression to a string
EXIT FOR - terminate a for/next loop before it completes
EXIT WHILE - terminate a while/wend loop before it completes
EXP( n ) - returns e^n
FIELD #h, list... - sets random access fields for #h
FILEDIALOG - opens a file selection dialog box
FILES - returns file and subdirectory info
"fill" - graphics command to fill with color
"font" - set font as specified
FONTDIALOG - opens a font selection dialog box
ForegroundColor$ - sets or returns foreground color for window
FOR...NEXT  - performs looping action
FUNCTION - define a user function

A-C D-F G-K L-M N-P R-S T-Z