GetMessage
PowerScript function
Description
Returns the error message from objects of type Throwable.
Syntax
|
1 |
throwableobject.GetMessage ( ) |
|
Argument |
Description |
|---|---|
|
throwableobject |
Object of type Throwable from which you want to retrieve |
Return value
String.
The error text for system error objects, such as RuntimeError, is
preset.
Usage
You can set the error message for an object of type Throwable using
the SetMessage function.
Examples
This example catches a system error message and displays that error
in a message box. Catching the system error prevents the application from
terminating when the arccosine argument, entered by the application user,
is not in the required range:
|
1 2 3 4 5 6 7 |
Double ld_num ld_num = Double (sle_1.text) TRY sle_2.text = string (acos (ld_num)) CATCH (runtimeerror er) MessageBox("Runtime Error", er.GetMessage()) END TRY |
This example catches and displays a user error message from the
Clicked event of a button that calls the user-defined function, wf_acos.
The user-defined function catches a runtime error — preventing the
application from terminating — and then sets the message for a user
object, uo_exception, that inherits from the Exception object type:
|
1 2 3 4 5 |
TRY wf_acos() CATCH (uo_exception u_ex) messageBox("Out of Range", u_ex.GetMessage()) END TRY |
Code for the wf_acos function is shown in the SetMessage
function.
See also