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  • Characteristics of dialog box
  • Line break in the dialog box
  • Displaying the dialog box
  • Miscellaneous
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WindowsLinuxPHPWEBDEV - Browser code
AndroidAndroid Widget iPhone/iPadApple WatchUniversal Windows 10 AppWindows Mobile
Stored procedures
Displays a custom message in a system warning window.
Example of warning
  • This is a blocking warning window. To continue running the application, the user must validate this window by clicking OK.
  • WEBDEV - Server code This function displays a blocking dialog box..
Warning("Cette manipulation n'a pas été validée" + ...
CR + "Contactez le responsable de l'application")
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.

Characteristics of dialog box

  • The title of the dialog box corresponds to the title of the current window (or page).
  • 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:
Warning("La fiche XXX a été modifiée." + CR + ...
"Toute nouvelle modification devra être validée.")
is equivalent to:
Warning("La fiche XXX a été modifiée.", ...
"Toute nouvelle modification devra être validée.")
You also have the ability to use the syntax of multiline strings. For example:
Cette manipulation n'À PAS été validée.
Contactez le responsable de l'application
WEBDEV - Server code

Displaying the dialog box

The display of the dialog box is blocked.. The dialog box is displayed in the center of the page, with a DDW effect (Dim Disabled Windows).
Warning uses the internal page "WEBDEVYesNo". To include this page in your project:
  1. Click on among the quick access buttons.
  2. The element creation window appears: click "Page" then "Page".
  3. In the "Internal Page" tab, select the internal page named "Yes/No".
  4. Validate. The "WEBDEVYesNo" page is displayed in the editor.
  5. Save the page by keeping its default name.


  • 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.
Business / UI classification: UI Code
Component: wd260obj.dll
Minimum version required
  • Version 9
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Video Warning


// btn advertencia

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