ELSEIF (Delphi)

From RAD Studio
Jump to: navigation, search

Go Up to Delphi Compiler Directives (List) Index


Conditional compilation




The $ELSEIF directive allows multi-part conditional blocks where at most one of the conditional blocks will be taken. $ELSEIF is a combination of a $ELSE and a $IF.

For example:

{$IFDEF  foobar}
	{$ELSEIF  RTLVersion >= 14}
	{$ELSEIF  somestring = 'yes'}
	    last chance

Of these four cases, only one will be taken. If none of the first three conditions is true, then the $ELSE clause will be taken. $ELSEIF must be terminated by $IFEND. $ELSEIF cannot appear after $ELSE. Conditions are evaluated top to bottom like a normal "if ... else if ... else " sequence. In the example above, if foobar is not defined, RTLVersion is 15, and somestring = 'yes', only the "blah" block will be taken not the "beep" block, even though the conditions for both are true.

See Also