The name of a graphics software package.
Syntax
$graphics
Return Value
A character string. Can be reset by an application program.
Description
Set by the application program to the name of a graphics program.
$Graphics can be set to the name of a graphics program of your choosing. The name should include the full disk path. The special file path indicator characters can be used.
The GRAPH command automatically calls up the program named in the $Graphics system variable.
When running ZimTC, the following code will simply copy the “xxx.zzz” to the client side without executing any further actions:
let $graphics = ""
graph "xxx.zzz"
Example
let $graphics = "c:chartappchart.exe"
See Also
$ClipPath
$DBPath
$Editor
$ImagePath
$WorkPath
$ZimPath
About Character Literals
GRAPH
System Variables
Indicates the direction in which focus was moving when an event occurs.
Syntax
$direction
Return Value
A number (-1, 0, or +1.) Can be reset by an application program.
Description
The direction of travel of focus when an event occurred.
| Value | Meaning |
| -1 | “Backward” direction. The focus was moving backward (with respect to the current TABORDER) when an event occurred. |
| 0 | No direction. The focus is not moving. |
| +1 | “Forward” direction. The focus was moving forward (with respect to the current TABORDER) when an event occurred. |
See Also
FORM INPUT
MENU INPUT
System Variables
WINDOW SET
Multiplies one value by another.
Syntax
[expression1]*expression2
The asterisk (*) multiplies the expression on the left by the expression on the right.
Parameters
| expression1 | a number or expression that evaluates to a number |
| expression2 | a number or expression that evaluates to a number |
Comments
Arithmetic operators indicate the sign of a number or perform arithmetic operations (addition, subtraction, multiplication, division, exponentiation).
See Also
About Arithmetic Expressions
Rules of Precedence for Arithmetic Operators
Divides one value by another.
Syntax
[expression1]/expression2
The oblique (or slash, /) is the division operator. It divides the expression on the left by the expression on the right.
Parameters
| expression1 | a number or expression that evaluates to a number |
| expression2 | a number or expression that evaluates to a number |
Comments
Arithmetic operators indicate the sign of a number or perform arithmetic operations (addition, subtraction, multiplication, division, exponentiation).
See Also
About Arithmetic Expressions
Rules of Precedence for Arithmetic Operators
Indicates a positive value (unary +) or adds two values.
Syntax
[expression1]+expression2
The plus sign (+) adds the expression on the right to the expression on the left.
Parameters
| expression1 | a number or expression that evaluates to a number |
| expression2 | a number or expression that evaluates to a number |
Comments
Arithmetic operators indicate the sign of a number or perform arithmetic operations (addition, subtraction, multiplication, division, exponentiation).
See Also
About Arithmetic Expressions
Rules of Precedence for Arithmetic Operators
Raises one value to the power of another.
Syntax
expression1 ^ expression2
The circumflex (^) raises the expression on the left to the power of the expression on the right. If the circumflex is not available on your terminal, substitute two asterisks (**).
Parameters
| expression1 | a number or expression that evaluates to a number |
| expression2 | a number or expression that evaluates to a number |
Comments
Arithmetic operators indicate the sign of a number or perform arithmetic operations (addition, subtraction, multiplication, division, exponentiation).
See Also
About Arithmetic Expressions
In a template program, indicates that the next line is to be joined to the current line at the output destination.
Syntax
linestart «$
linecontinue »
where
| linestart | any portion, from the beginning, of an output line |
| linecontinue | the remaining portion(s) of the same output line |
Comments
In a template program, the dollar sign ($) indicates that the next line is to be joined to the current line at the output destination.
Normally, each physical line in a template is sent as a separate line to the current output destination. To cause successive physical lines in a template to be joined into one line in the output, end the appropriate lines in the template with the dollar sign ($).
If a line must end with a dollar sign for some other reason, ask the software to interpret the dollar sign by placing a backslash ( – Escape) preceding the dollar sign.
Marks a call to a macro in an application program.
Syntax
#<macroname>
where
| macroname | The name of a global or local macro. |
Return Value
A macro call returns the current value of the macro or the null string (”).
Comments
This command calls a particular macro in an application program.
A macro is a dynamically declared name that represents a character string. When a macro call is encountered in an application program, the macro call is replaced by the current character value of the macro.
A macro acquires values in one of two ways: implicitly, when the software encounters a call to a previously unknown global macro or unassigned local macro, or explicitly, in a LET or INPUT statement or a call to a local macro.
Programs with macro references cannot be compiled because the macros take the current references at the time of the compilation.
Example
Example of Using # (Macro call) and <> (Macro name delimiters)
let = "ENT"
Defines the global macro to represent the string ENT. Then the statement
list #s format #Name
is interpreted as
list ENTs format ENTName
Used with the LIKE operator to construct patterns for matching.
Comments
Used with the LIKE operator in logic expressions, the _ wildcard matches any single character when the pattern on the right is compared to expression.
Example
"_ob%"
Matches any character string whose second and third letters are ob, followed by zero or more characters (i.e., “Robert”, “Bob”, “Cobbler”, etc.).
compute Employees where LastName like "_a%n"
Processes all records whose LastName values are three characters or more, the second character being an a and the last character being an n.
Grade like "100\%"
Shows the per cent sign being used literally in a string. (The first backslash “escapes” the second backslash, which, in turn, “escapes” the per cent sign, turning it into a literal character.)
find Parts where PartDesc like "%\\%"
Finds PARTS whose part description contains a backslash.
FirstName like $concat("S_e%p",SuffixVariable)Assuming that SuffixVariable is “%”, then the above expression is logically true if FirstName matches the pattern “S_e%p%”.
DDEConnect
Sets up the access to the remote application.
Syntax
DDEConnect ( out tErrCode,
out tServ,
in dde_app,
in dde_topic)
Parameters
| tErrCode | A returned error code. It must be a longint. |
| tServ | The returned connection handle. It also must be a longint. |
| dde_app | A string containing the application name. |
| dde_topic | A string containing the topic name. |
Comments
The procedure is supplied with the application name and topic name (usually the document name). DDEConnect assigns a connect handle to the “tServ” variable to be used in subsequent commands. DDEConnect is compiled.
The filename is ddeconn.pgm.
Example
For example, given that DDE_Err and hServ are of type longint:
DDEConnect (DDE_Err, hServ, ‘excel’, ‘sheet1’)
starts a conversation with Microsoft EXCEL. The topic of the conversation is the spreadsheet ‘sheet1’. In this case, EXCEL must be started and ‘sheet1’ opened beforehand.
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