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Method called on error
| Method called on error {( scope )} -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| scope | Integer |
|
Scope of the error method | |||||
| Function result | String |
|
Name of method called on error | |||||
The Method called on error command returns the name of the method installed by the ON ERR CALL command for the current process or the defined scope.
In the scope parameter, pass the execution context for which you want to get the name of the error handler method. You can use one of the following constants:
| Constant | Value | Comment |
| ek errors from components | 2 | Errors that occurred in components |
| ek global | 1 | Errors that occurred in the global execution context of the project |
| ek local | 0 | Errors that occurred in the local execution context (default if scope parameter is omitted) |
If no method has been installed for the scope, an empty string ("") is returned.
This command is particularly useful in the context of components because it enables you to temporarily change and then restore the error-catching methods:
$methCurrent:=Method called on error
ON ERR CALL("NewMethod")
` If the document cannot be opened, an error is generated
$ref:=Open document("MyDocument")
` Reinstallation of previous method
ON ERR CALL($methCurrent)
Product: 4D
Theme: Interruptions
Number:
704
Created: 4D v6.8.1
Modified: 4D v19 R8
4D Language Reference ( 4D v20 R7)
