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New WINDEV, WINDEV Mobile 25 feature!
  • Characteristics of dialog box
  • Line break in the dialog box
  • Miscellaneous
  • Application in the background: Android 10 specific case
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Stored procedures
Displays a custom message in a non-blocking system warning window.
Example of a warning message
Remarks:
  • This is a non-blocking warning window. The WLanguage code that follows the call to WarningAsynchronous continues to run. To close the window, the user must click the OK button to validate. When the user clicks "OK", the code of a WLanguage procedure can be run.
  • In the WLanguage code following the call to the function, another modal window cannot be opened before closing the dialog box.
Example
DelayBeforeClosing(20s)
NextTitle("Caution")
WarningAsynchronous ("This action could not be validated" + ...
CR + "Contact the application manager", Procedure_ValidationOK)
 
INTERNAL PROCEDURE Procedure_ValidationOK()
ToastDisplay("Reminder: Action not validated")
END
 
ExecuteProcess(BTN_Next, trtClick)
Syntax
WarningAsynchronous(<Text> [, <WLanguage procedure>])
<Text>: Character string (with quotes)
Text to display.
<WLanguage procedure>: Name of procedure or lambda procedure, optional
Name of the WLangage procedure ("callback" procedure) called when the user clicks "OK" in the warning window.
This WLanguage procedure can correspond to:
  • a name of a global procedure,
  • a name of internal procedure,
  • a lambda procedure.
If this parameter is not specified, no procedure is run when the user clicks "OK" in the warning window.
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 (exclamation mark in yellow triangle) 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:
WarningAsynchronous("The XXX form was modified." + CR + ...
"Any new modification must be validated.")
You also have the ability to use the syntax of multiline strings. For example:
WarningAsynchronous(
[
This operation was not validated.
 
Contact the application provider.
])

Miscellaneous

  • Timers (TimerSys) 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.
Versions 25 and later
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
WarningAsynchronous 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). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
New in version 25
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
WarningAsynchronous 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). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
WarningAsynchronous 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). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
Component : wd250obj.dll
Minimum version required
  • Version 25
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