Error (Function)

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Help / WLanguage / WLanguage functions / Standard functions / Windows functions / Dialog Box functions

Features of the dialog box
Line break in the dialog box
Displaying the last error message
Miscellaneous

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Error (Function)

In french: Erreur

Displays a custom error message in a system error window.

Remarks:

This is a modal warning window. To continue running the application, the user must click "OK".
In a web service, Error is used to define the error returned by the web service. If Error is called multiple times, the error messages are concatenated.

Example

NextTitle("Erreur: Client inconnu")
Error("Ce code client n'existe pas. Vous devez d'abord le créer")

Error("Vous devez indiquer votre nom.")

Syntax

Displaying a custom error message Hide the details

Error(<Text> [, <Line 2> [... [, <Line n>]]])

<Text>: Character string

Text to display.

<Line 2>: Optional character string

Text displayed on the second line.

<Line n>: Optional character string

Text displayed on the Nth line.

Displaying the error message of the last WLanguage function used

Error()

Remarks

Features of the dialog box

The title of the dialog box corresponds to the title of the current window (or page).
To modify or define the title of dialog box, use NextTitle.

The message is aligned to the left.
The button caption depends on the runtime language of Windows.
The maximum number of characters cannot exceed 4096. If a larger string is passed as parameter, it will be truncated.
The icon displayed (white cross) cannot be modified.

Line break in the dialog box

The CR string (Carriage Return) can be used to force a break to the next line. For example:

Error("Une erreur a été détectée lors de la saisie de l'adresse. " + CR + ...
	"Merci de modifier les données concernant le client.")

is equivalent to:

Error("Une erreur a été détectée lors de la saisie de l'adresse. ", ...
	"Merci de modifier les données concernant le client.")

You also have the ability to use the syntax of multiline strings. For example:

Error(
[
Une erreur a été détectée lors de la saisie de l'adresse. 

Merci de modifier les données concernant le client.
])

Displaying the last error message

Calling Error without any parameters (syntax 2) displays the error message of the last WLanguage function that triggered an error.

In this case, the following code:

Error()

is equivalent to:

Error(ErrorInfo())

Caution: The Error function must be used immediately after calling the failed function.. If a WLanguage function is called, it may reset and change the error report returned by Error.

Miscellaneous

Timers (TimerSys) are not stopped when this function is called.
This function must not be used in a thread.
The caption of the button is displayed in the language used by Windows on the current computer.

Business / UI classification: UI Code

Component: wd300obj.dll