Difference between revisions of "Error"

Revision as of 00:32, 9 February 2016

Function Error(message)

Reports an evaluation-time error, displaying the indicated «message» to the end user in a dialog box and ending the current computation.

If the expression in a Check Attribute calls Error(), it displays the error message as a warning dialog, instead of the default failed-check message that otherwise appears when the Check Attribute evaluates to False (0).

Examples

If not IsNumber(x) Then Error("Something is wrong. x is not numeric.");

@@ Line 1: / Line 1: @@
-[[category:User-interface functions]]
+[[Category:User-interface functions]]
+[[Category: Error messages]]
 [[Category:Doc Status C]] <!-- For Lumina use, do not change -->
 [[category:Evaluation Functions]]
-= Function Error(message) =
+== Function Error(message) ==
 Reports an evaluation-time error, displaying the indicated «message» to the end user in a dialog box and ending the current computation.
-If the expression in a [[Check Attribute]] calls [[Error]](), it displays the error message as a warning dialog, instead of the default failed-check message that otherwise appears when the [[Check Attribute]] evaluates to False (0).
+If the expression in a [[Check Attribute]] calls [[Error]](), it displays the error message as a warning dialog, instead of the default failed-check message that otherwise appears when the [[Check Attribute]] evaluates to <code>False</code> (0).
-= Examples =
- [[If]] not [[IsNumber]](x) Then [[Error]]("Something is wrong.  x is not numeric.");
- ...
-= See Also =
+== Examples ==
+:<code>If not IsNumber(x) Then Error("Something is wrong.  x is not numeric.");</code>
+== See Also ==
+* [[Dialog_Functions#Error.28message.29|Error]]
 * [[Check Attribute]]
 * [[MsgBox]]