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  • Characteristics of dialog box
  • Line break in the dialog box
  • Miscellaneous
  • Emulation
  • Application in the background: Android 10 specific case
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Stored procedures
Displays a custom message in a system warning window.
Example of warning
Remarks:
  • This is a blocking warning window. To continue running the application, the user must validate this window by clicking OK.
    Versions 25 and later
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use WarningAsynchronous.
    New in version 25
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use WarningAsynchronous.
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use WarningAsynchronous.
  • WINDEV WINDEV allows you to apply the skin template of your project to this dialog box. See Customizing dialog boxes for more details.
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 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 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
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.
Example
NextTitle("Caution")
Warning("This operation was not validated" + ...
CR + "Contact the application manager")
Syntax
Warning(<Text> [, <Line 2> [... [, <Line n>]]])
<Text>: Character string (with quotes)
Text that will be displayed on the first line.
<Line 2>: Optional character strings (with quotes)
Text that will be displayed on the second line.
<Line n>: Optional character strings (with quotes)
Text that will be displayed on the other lines.
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.
WINDEV To customize this dialog box (as well as all system dialog boxes of your application), check "Customize the system windows (Info, YesNo, Confirm, Dialog)" in the "Style" tab of the project description. See Customizing dialog boxes for more details.

Line break in the dialog box

The CR string (Carriage Return) can be used to force a break to the next line. For example:
Warning("The XXX form was modified" + CR + ...
"Any new modification must be validated.")
is equivalent to:
Warning("The XXX form was modified", ...
"Any new modification must be validated.")
You also have the ability to use the syntax of multiline strings. For example:
Warning(
[
This operation was not validated.

Contact the application provider
])

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.
  • WINDEV DelayBeforeClosing is used to limit the display duration of the message. The dialog box is automatically closed. For question or confirmation dialog boxes, the default button corresponds to the expected answer.
  • The caption of the button is displayed in the language used by Windows on the current computer.
WINDEV

Emulation

A warning message can be emulated by EmulateWarning.
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.
Warning 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.
Warning 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.
Warning 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.
Business / UI classification : UI Code
Component : wd250obj.dll
Minimum version required
  • Version 9
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Comments
Video Warning
https://youtu.be/Jy7ESrMuGi8

https://windevdesenvolvimento.blogspot.com/2019/04/dicas-2077-windev-e-mobile-comandos.html

// btn advertencia

NextTitle("Mensagem de Advertencia")
Warning("Aqui vai uma menagem de Advertencia"+CR+"Contate o Programador dos Pampas")
amarildo
17 Apr. 2019