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  • Features of the dialog box
  • Line break in the dialog box
  • Displaying the last error message
  • Miscellaneous
  • Application in the background: Specific case from Android 10
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Stored procedures
Displays a custom error message in a system error window for a set amount of time. After the timeout, the system window is automatically closed.
Remarks:
  • This warning window blocks the application until the time limit has elapsed. To continue running the application, the user must click "OK".
    WINDEVAndroid To avoid blocking the application, use ErrorWithTimeoutAsynchronous.
  • WINDEV WINDEV allows you to apply the skin template of your project to this dialog box. For more details, see Customizing dialog boxes.
New in version 28
Android This function is now available for Android applications.
Java This function is now available for Java applications.
Example
// Display "An error was detected" in an error window
// This error window will be automatically closed after 10 seconds.
ErrorWithTimeout(1000, "An error was detected")
// Display the last error in an error window
// This error window will be automatically closed after 5 seconds.
ErrorWithTimeout(500)
Syntax

Displaying a custom error message Hide the details

ErrorWithTimeout(<Timeout> , <Text> [, <Line 2> [... [, <Line n>]]])
<Timeout>: Integer ou Duration
Amount of time (expressed in hundredth of second) before automatically closing the error window. This parameter can be:
  • an integer corresponding to the number of hundredths of a second,
  • a Duration variable,
  • the duration in a readable format (e.g., 1 s or 10 ms).
<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 Hide the details

ErrorWithTimeout(<Timeout before closing>)
<Timeout before closing>: Integer ou Duration
Amount of time (expressed in hundredth of second) before automatically closing the error window. This parameter can be:
  • an integer corresponding to the number of hundredths of a second,
  • a Duration variable,
  • the duration in a readable format (e.g., 1 s or 10 ms).
Remarks

Features of the dialog box

  • The title of the dialog box is the title of the current window. To modify this title, 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.
To customize this dialog box (and all the system dialog boxes in your application), check "Customize system windows (Info, YesNo, Confirm, Dialog)" in the "Style" tab of the project description. For more details, see Customizing dialog boxes.

Line break in the dialog box

The CR string (Carriage Return) can be used to force a break to the next line. For example:
ErrorWithTimeout(500, "An error was detected while entering the address." + CR + ...
"Please modify the customer details.")

is equivalent to:
ErrorWithTimeout(500, "An error has been detected when entering the address." , ...
"Please modify the customer details.")
You also have the ability to use the syntax of multiline strings. For example:
ErrorWithTimeout(500,
[
An error was detected while entering the address.
 
Please modify the customer details.
])

Displaying the last error message

Calling ErrorWithTimeout by specifying only the timeout (syntax2), displays the error message of the last WLanguage function that triggered an error.
In this case, the following code:
ErrorWithTimeout(500)

is equivalent to:
ErrorWithTimeout(500, ErrorInfo())
Caution: ErrorWithTimeout must be used immediately after the call to the function that failed. Indeed, calling a WLanguage function may reinitialize and modify the status report of ErrorWithTimeout.

Miscellaneous

  • Timers (TimerSys) are not stopped when this function is called.
  • Windows events are not stopped when this function is called.
  • The caption of the button is displayed in the language used by Windows on the current computer.
  • Equivalence: ErrorWithTimeout is equivalent to Error used with DelayBeforeClosing:
    The following code:
    ErrorWithTimeout(1000, "An error was detected")

    is equivalent to:
    DelayBeforeClosing(1000)
    Error("An error occurred")
Android

Application in the background: Specific case from Android 10

From Android 10, it is no longer possible to open a window when the application is in the background.
ErrorWithTimeout can open a window. If this function is used while the application is in the background, a fatal error will occur.
Tips:
  • It is possible to determine if the application is in the background using InBackgroundMode.
  • If an application needs to interact with the user while it is in the background, the solution is to display a notification (via the Notification type). The application will be brought back to the foreground when the notification is clicked, if the ActivateApplication property is set to True. You can also open a window from the procedure passed to the ActionClick property.
Business / UI classification: UI Code
Component: wd280obj.dll
Minimum version required
  • Version 18
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