Mega Code Archive
$ifopt - tests for the state of a compiler directive
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1 {$IfOpt Switch-}
...
{$Else}
...
{$EndIf}
2 {$IfOpt Switch+}
...
{$Else}
...
{$EndIf}
Description
The $IfOpt compiler directive is a meta-directive - it tests for the + or - state of a single character compiler directive.
For example:
{$IfOpt H+}
ShowMessage('Longstrings are set on');
{$EndIf}
It is useful to report on directive settings at the start of a program, when testing.
Notes
$IfOpt can be used multiple times in your code.
Related commands
$Define Defines a compiler directive symbol - as used by IfDef
$Else Starts the alternate section of an IfDef or IfNDef
$EndIf Terminates conditional code compilation
$IfDef Executes code if a conditional symbol has been defined
$IfNDef Executes code if a conditional symbol has not been defined
$UnDef Undefines a compiler directive symbol - as used by IfDef
Example code : Show various default directive settings
begin
// Show the default settings of various compiler directives
{$IfOpt A+}
ShowMessage('Align is On');
{$Else}
ShowMessage('Align is Off');
{$EndIf}
{$IfOpt B+}
ShowMessage('BoolEval is On');
{$Else}
ShowMessage('BoolEval is Off');
{$EndIf}
{$IfOpt H+}
ShowMessage('LongStrings is On');
{$Else}
ShowMessage('LongStrings is Off');
{$EndIf}
end;
Show full unit code
Align is Off
BoolEval is Off
LongStrings is On
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