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  • Characteristics of dialog box
  • Line break in the dialog box
  • Displaying the last error message
  • Miscellaneous
  • Emulation
  • Application in the background: Specific case from Android 10
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
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WINDEV Mobile
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Others
Stored procedures
Displays a custom error message in a system error window.
Error message
Remarks:
  • This is a modal warning window. To continue running the application, the user must click "OK".
    Versions 25 and later
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use ErrorAsynchronous.
    New in version 25
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use ErrorAsynchronous.
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use ErrorAsynchronous.
  • WINDEV WINDEV allows you to apply the skin template of your project to this dialog box. For more details, see Customizing dialog boxes.
  • Versions 16 and later
    WINDEVWEBDEV - Server code In a Webservice, Error is used to define the error returned by the Webservice. If Error is called multiple times, the error messages are concatenated.
    New in version 16
    WINDEVWEBDEV - Server code In a Webservice, Error is used to define the error returned by the Webservice. If Error is called multiple times, the error messages are concatenated.
    WINDEVWEBDEV - Server code In a Webservice, Error is used to define the error returned by the Webservice. If Error is called multiple times, the error messages are concatenated.
Versions 15 and later
Android This function is now available for Android applications.
New in version 15
Android This function is now available for Android applications.
Android This function is now available for Android applications.
Versions 16 and later
Universal Windows 10 App This function is now available for Windows Phone applications.
New in version 16
Universal Windows 10 App This function is now available for Windows Phone applications.
Universal Windows 10 App This function is now available for Windows Phone applications.
Versions 17 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad applications.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Versions 22 and later
AndroidJava The syntax 2 is now available.
New in version 22
AndroidJava The syntax 2 is now available.
AndroidJava The syntax 2 is now available.
Example
Reports and QueriesWindowsLinuxAndroidiPhone/iPadJavaUser code (UMC)
NextTitle("Error: Unknown customer")
Error("This customer code does not exist. It must be created beforehand")
WEBDEV - Server codeWEBDEV - Browser codePHPAjax
Error("Enter your name.")
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.
WINDEVWEBDEV - Server codeReports and QueriesUniversal Windows 10 AppiPhone/iPadUser code (UMC)Ajax

Displaying the error message of the last WLanguage function used

Error()
WINDEVWEBDEV - Server codeReports and QueriesUniversal Windows 10 AppAndroidiPhone/iPadJavaUser code (UMC)Ajax

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).
    AndroidiPhone/iPad 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.
WINDEV 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.
Versions 16 and later
WEBDEV - Server code To customize this dialog box (and all the system dialog boxes in your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin" tab of the project description window.
New in version 16
WEBDEV - Server code To customize this dialog box (and all the system dialog boxes in your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin" tab of the project description window.
WEBDEV - Server code To customize this dialog box (and all the system dialog boxes in your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin" tab of the project description window.

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 + ...
"Please modify the customer details.")

is equivalent to:
Error("An error was detected while entering the address. ", ...
"Please modify the customer details.")
You also have the ability to use the syntax of multiline strings. For example:
Error(
[
An Error was detected WHILE entering the address.
 
Please modify the customer details.
])
WINDEVWEBDEV - Server codeReports and QueriesUniversal Windows 10 AppAndroidiPhone/iPadJavaUser code (UMC)Ajax

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: 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.

Miscellaneous

  • Timers (TimerSys) are not stopped when this function is called.
  • WINDEV Windows events are not stopped when this function is called.
  • WINDEV You can use the code wizard to enter the function in the code editor. Depending on the characteristics entered in the wizard, the function used can be different in the code that is automatically generated.
  • WINDEVJava DelayBeforeClosing limits the display time of all dialog boxes. The dialog box is automatically closed. For question or confirmation dialog boxes, the default button corresponds to the expected answer.
    Versions 18 and later
    WINDEV To limit the display duration of an Error dialog box only, use ErrorWithTimeout.
    New in version 18
    WINDEV To limit the display duration of an Error dialog box only, use ErrorWithTimeout.
    WINDEV To limit the display duration of an Error dialog box only, use ErrorWithTimeout.
  • The caption of the button is displayed in the language used by Windows on the current computer.
  • iPhone/iPad This function must not be used:
    • in the event "Resizing" of the window. Otherwise, the application will be locked.
    • in the event "Changing the orientation" of the window.
    • in the event "Move to the foreground" associated with the project.
      Remark: However, the function can be used in the event "Move to the foreground" of a window.
    • in a thread.
WINDEV

Emulation

An error message can be emulated by EmulateError.
Versions 25 and later
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.
Error 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.
New in version 25
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.
Error 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.
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.
Error 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: wd270obj.dll
Minimum version required
  • Version 9
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