Error (Function)

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Characteristics of dialog box
Line break in the dialog box
Displaying the last error message
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.

To close the window, the user must click OK.

Versions 15 and later

This function is now available for Android applications.

New in version 15

This function is now available for Android applications.

Versions 16 and later

This function is now available for Windows Phone applications.

New in version 16

This function is now available for Windows Phone applications.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Versions 18 and later

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 22 and later

The syntax 2 is now available.

New in version 22

The syntax 2 is now available.

Example

NextTitle("Error: Unknown customer")
Error("This customer code does not exist. It must be created beforehand")

Syntax

Displaying a custom error message Hide the details

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

<Text>: Character string (with quotes)

Text to display.

<Line 2>: Optional character strings (with quotes)

Text displayed on the following lines.

<Line n>: Optional character strings (with quotes)

Text displayed on the following lines.

Displaying the error message of the last WLanguage function used

Error()

Displaying the error message of the last WLanguage function used

Error()

Remarks

Characteristics of dialog box

The title of the dialog box corresponds to the title of the current window (or page).
To comply with the system specifications, the title of dialog box is empty by default. To define this title, use NextTitle. To comply with the system specifications, the title of dialog box is empty by default. To define this title, use NextTitle.
To modify or define the title of dialog box, use NextTitle.

The message is aligned to 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 in 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("An error was detected while entering the address." + CR + ...
"Modify the personal details of the customer.")

is equivalent to:

Error("An error was detected while entering the address. ", ...
"Modify the personal details of the customer.")

Displaying the last error message

Error used with no parameter (syntax 2) displays the error message corresponding to the last WLanguage function that triggered an error.

In this case, the following code:

Error()

is equivalent to:

Error(ErrorInfo())

Caution: Error must be used immediately after the call to the function that failed. Indeed, the call to a WLanguage function can reinitialize and modify the error report returned by Error.

Displaying the last error message

Error used with no parameter (syntax 2) displays the error message corresponding to the last WLanguage function that triggered an error.

In this case, the following code:

Error()

is equivalent to:

Error(ErrorInfo())

Miscellaneous

Timers (TimerSys) are not stopped when this function is called.
DelayBeforeClosing is used to limit the display duration of all the dialog boxes. The dialog box is automatically closed. For the question or confirmation dialog boxes, the expected answer corresponds to the default button.
The caption of the button is displayed in the language used by Windows on the current computer.
This function must not be used:
- in the event "Resizing" of the window. Otherwise, the application will be locked.
- in the event "Changing of orientation" of the window.
- in the event "Placing in foreground" associated with the project.
  Remark: However, the function can be used in the event "Placing in foreground" of a window.
- in a thread.

Component : wd250obj.dll